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Next up: we have talks from Illyana Mullins, Harish Kumar Gopalakrishnan & Adam Crease.
#oooarrcyber #bsidesexeter2026 -
Supreme Court to decide on the right to die with dignity for Harish Rana, a man in a vegetative state since 2013. https://english.mathrubhumi.com/news/india/supreme-court-ruling-right-to-die-with-dignity-harish-rana-jzjp8v17?utm_source=dlvr.it&utm_medium=mastodon #SupremeCourt #RightToDie #HarishRana #Euthanasia
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At the seventh edition of MBIFL, scholars Harish Trivedi and Vanamala Viswanatha examine translation as deep reading, cultural mediation, and a transformative literary act. https://english.mathrubhumi.com/features/mbifl-2026/mbifl-2026-wordy-pendulum-translation-session-kdsvrqf6?utm_source=dlvr.it&utm_medium=mastodon #MBIFL2026 #TranslationStudies #LiteraryTranslation #IndianLiterature
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Now playing on Radio Digital Malayali: Vizhigalil Vizhigalil (From "Thiruvilayadal Arambam") - Lofi Mix by Harish Raghavendra/Viveka/D. Imman/Ooratti!
Tune in now with 0 other listeners: https://radio.digitalmalayali.in
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Now playing on Radio Digital Malayali: Vizhigalil Vizhigalil (From "Thiruvilayadal Arambam") - Lofi Mix by Harish Raghavendra/Viveka/D. Imman/Ooratti!
Tune in now with 0 other listeners: https://radio.digitalmalayali.in
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#Unterwegsmusic
#music 🎧
... beim #SchritteMachen 🚶
Harish Raghavendra, Harini - Oru Poo Pookiradhu
https://song.link/s/0p1CSz9uxFDCgwflQQhMpZ -
Supreme Court to decide on the right to die with dignity for Harish Rana, a man in a vegetative state since 2013. https://english.mathrubhumi.com/news/india/supreme-court-ruling-right-to-die-with-dignity-harish-rana-jzjp8v17?utm_source=dlvr.it&utm_medium=mastodon #SupremeCourt #RightToDie #HarishRana #Euthanasia
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Supreme Court to decide on the right to die with dignity for Harish Rana, a man in a vegetative state since 2013. https://english.mathrubhumi.com/news/india/supreme-court-ruling-right-to-die-with-dignity-harish-rana-jzjp8v17?utm_source=dlvr.it&utm_medium=mastodon #SupremeCourt #RightToDie #HarishRana #Euthanasia
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Supreme Court to decide on the right to die with dignity for Harish Rana, a man in a vegetative state since 2013. https://english.mathrubhumi.com/news/india/supreme-court-ruling-right-to-die-with-dignity-harish-rana-jzjp8v17?utm_source=dlvr.it&utm_medium=mastodon #SupremeCourt #RightToDie #HarishRana #Euthanasia
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BRS leaders, including KT Rama Rao and T Harish Rao, placed under house arrest in Hyderabad ahead of protest against RTC bus fare hike https://english.mathrubhumi.com/news/india/brs-leader-react-after-being-placed-under-house-arrest-over-rtc-fare-hike-protest-qyajh0s0?utm_source=dlvr.it&utm_medium=mastodon #BRS #Hyderabad #KTR #HouseArrest #ChaloBusBhavan
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BRS leaders, including KT Rama Rao and T Harish Rao, placed under house arrest in Hyderabad ahead of protest against RTC bus fare hike https://english.mathrubhumi.com/news/india/brs-leader-react-after-being-placed-under-house-arrest-over-rtc-fare-hike-protest-qyajh0s0?utm_source=dlvr.it&utm_medium=mastodon #BRS #Hyderabad #KTR #HouseArrest #ChaloBusBhavan
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BRS leaders, including KT Rama Rao and T Harish Rao, placed under house arrest in Hyderabad ahead of protest against RTC bus fare hike https://english.mathrubhumi.com/news/india/brs-leader-react-after-being-placed-under-house-arrest-over-rtc-fare-hike-protest-qyajh0s0?utm_source=dlvr.it&utm_medium=mastodon #BRS #Hyderabad #KTR #HouseArrest #ChaloBusBhavan
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Segal #Law Firm Urges #NewYorkers to Know Their #Legal -
https://kensbookinfo.blogspot.com/p/24-7-pr.html#197Zyuganov urges #Moscow to stop hosting Pashinyan -
https://kensbookinfo.blogspot.com/p/world-capitals.html#Moscow#Congress' Harish Rawat on impact of West #Asia crisis -
https://kensbookinfo.blogspot.com/p/business.html#3How #Trump's Summit in #China Will Differ From His 2017 -
https://kensbookinfo.blogspot.com/p/politics.html#5#Law firm must pay DJ Tiësto €145m over #US tax advice -
https://kensbookinfo.blogspot.com/p/world-capitals.html#AmsterdamView all news from Cities in the World https://kensbookinfo.blogspot.com/2026/03/latest-news-from-countries-of-world_16.html
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Segal #Law Firm Urges #NewYorkers to Know Their #Legal -
https://kensbookinfo.blogspot.com/p/24-7-pr.html#197Zyuganov urges #Moscow to stop hosting Pashinyan -
https://kensbookinfo.blogspot.com/p/world-capitals.html#Moscow#Congress' Harish Rawat on impact of West #Asia crisis -
https://kensbookinfo.blogspot.com/p/business.html#3How #Trump's Summit in #China Will Differ From His 2017 -
https://kensbookinfo.blogspot.com/p/politics.html#5#Law firm must pay DJ Tiësto €145m over #US tax advice -
https://kensbookinfo.blogspot.com/p/world-capitals.html#AmsterdamView all news from Cities in the World https://kensbookinfo.blogspot.com/2026/03/latest-news-from-countries-of-world_16.html
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Segal #Law Firm Urges #NewYorkers to Know Their #Legal -
https://kensbookinfo.blogspot.com/p/24-7-pr.html#197Zyuganov urges #Moscow to stop hosting Pashinyan -
https://kensbookinfo.blogspot.com/p/world-capitals.html#Moscow#Congress' Harish Rawat on impact of West #Asia crisis -
https://kensbookinfo.blogspot.com/p/business.html#3How #Trump's Summit in #China Will Differ From His 2017 -
https://kensbookinfo.blogspot.com/p/politics.html#5#Law firm must pay DJ Tiësto €145m over #US tax advice -
https://kensbookinfo.blogspot.com/p/world-capitals.html#AmsterdamView all news from Cities in the World https://kensbookinfo.blogspot.com/2026/03/latest-news-from-countries-of-world_16.html
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Segal #Law Firm Urges #NewYorkers to Know Their #Legal -
https://kensbookinfo.blogspot.com/p/24-7-pr.html#197Zyuganov urges #Moscow to stop hosting Pashinyan -
https://kensbookinfo.blogspot.com/p/world-capitals.html#Moscow#Congress' Harish Rawat on impact of West #Asia crisis -
https://kensbookinfo.blogspot.com/p/business.html#3How #Trump's Summit in #China Will Differ From His 2017 -
https://kensbookinfo.blogspot.com/p/politics.html#5#Law firm must pay DJ Tiësto €145m over #US tax advice -
https://kensbookinfo.blogspot.com/p/world-capitals.html#AmsterdamView all news from Cities in the World https://kensbookinfo.blogspot.com/2026/03/latest-news-from-countries-of-world_16.html
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Beautiful and Doomed: Saving Bangladesh’s Langurs From Extinction
A recent study has found hybridisation (interbreeding) between critically endangered Phayre’s #langurs and endangered capped langurs in #Bangladesh, raises serious concerns about their genetic health and future survival as distinct species. Hybridisation is a serious sign of ecological disruption, and researchers point to human-related threats such as #palmoil and #timber #deforestation, habitat fragmentation, and #hunting as key drivers for them interbreeding. These pressures not only push the species to hybridise but also threaten their long-term existence in the wild, highlighting the urgent need for conservation efforts to address habitat destruction and protect these seriously endangered primates. 🌿 Help them when you shop, go #vegan and #BoycottPalmOil #Boycott4WildlifeBeautiful Capped Langurs and Phayre’s #Langurs are interbreeding, risking both #species’ survival. Pressures of #palmoil #deforestation and #hunting are pushing the #monkeys to the edge in #Bangladesh #Boycottpalmoil #Boycott4Wildlife 🌴🚫 @palmoildetect https://wp.me/pcFhgU-9bY
Share to BlueSky Share to TwitterHybridisation/interbreeding of two beautiful #langur 🐵🐒species in #Bangladesh puts both #animals in serious peril finds #research study 😭. #Palmoil #deforestation is a major threat. Fight back and #Boycottpalmoil #Boycott4Wildlife 🌴🛢️⛔ @palmoildetect.bsky.social https://wp.me/pcFhgU-9bY
Share to BlueSky Share to TwitterThis article was originally published in Mongabay and was written by Mohammad Al-Masum Molla, read the original article. Republished under Creative Commons attribution licence. Research by Ahmed, T., Hasan, S., Nath, S., Biswas, S. … Roos, C. (2024). Mixed-Species Groups and Genetically Confirmed Hybridization Between Sympatric Phayre’s Langur (Trachypithecus phayrei) and Capped Langur (T. pileatus) in Northeast Bangladesh. International Journal of Primatology. doi:10.1007/s10764-024-00459-x
- Bangladesh is home to less than 500 Phayre’s langurs and 600 capped langurs in the rainforests in the country’s northeast.
- A recent study has unveiled a trend of hybridisation between Phayre’s langurs and capped langurs in Bangladesh, which are listed as critically endangered and endangered, respectively, by IUCN.
- Hybridisation is a vital indicator of ecological change, and researchers are raising serious concerns about the genetic health of the two species and their future existence in the wild.
- The study holds human activities such as deforestation, habitat fragmentation and hunting as some of the causes responsible for increasing the risk of hybridisation cases.
A recent study revealed a troubling trend among the wild monkey population in Bangladesh’s northeastern forests. The study, conducted by the German Primate Centre, unveiled a concerning tendency of hybridisation between Phayre’s langurs (Trachypithecus phayrei) and capped langurs (Trachypithecus pileatus), listed as critically endangered and endangered, respectively, within Bangladesh by IUCN.
This hybridisation of the endangered primates, which researchers of the study say is caused by habitat loss due to deforestation and other human interferences, could push them to extinction in a few generations.
“Bangladesh’s langur populations are small and isolated, limiting gene flow. This hybridisation in restricted populations heightens their extinction risk. Furthermore, our laws primarily protect pure langurs, leaving hybrids unprotected. If hybrids persist into future generations, we’ll face tough decisions about their role in our ecosystem,” Tanvir Ahmed, the study’s lead researcher, told Mongabay.
Monirul H. Khan, a professor at Jahangirnagar University’s Zoology Department, agreed with Tanvir and said that the significance of interbreeding is that these langurs don’t survive for a long time.
“They are usually born infertile. So the population of langur will gradually decrease,” he said.
The study, published in the International Journal of Primatology, recently found that out of 98 langur groups observed, eight comprised both Phayre’s and capped langurs.
“We analysed genetic samples of the species in the lab and confirmed one case of hybridisation. This langur had a capped langur mother and a Phayre’s langur father. Another female with a hybrid appearance showed signs of motherhood, indicating that at least female hybrids are fertile and give birth to young,” Tanvir said.
“The genetic characteristics of a distinct species tend to become most threatened when their hybrid females can reproduce. Fertile hybrid females threaten to bring the two species closer together as the offsprings begin to mix characteristics. That is exactly what could be happening to them,” he said.
The research shows that the ‘spectacled’ Phayre’s langurs and the capped langurs, with their distinctive shock of black fur on their heads, are under threat of losing their distinct genetic makeup to hybridisation.
Researchers conducted the study over five years, between 2018 and 2023, in six forests in northeastern Bangladesh — Lawachara National Park, Satchari National Park, Rema-Kalenga Wildlife Sanctuary, Rajkandi Reserve Forest, Patharia Hill Reserve Forest and Atora Hill Reserve Forest.
The study involved field surveys for 92 days between March 2018 and April 2019 and from July to December 2022, employing three trained local eco-guides to monitor the mixed-species groups until October 2023.
(Left) A mixed-species group of Phayre’s and capped langurs in Satchari National Park. (Right) A male hybrid of Phayre’s and capped langurs in Rema-Kalenga Wildlife Sanctuary. Image by Auritro Sattar. Images by Rasel Debbarma and Auritro Sattar.Why hybridisation is a concern
The study shows that, although it’s relatively rare, hybridisation among primates is an escalating concern worldwide, often driven by habitat loss and fragmentation. It serves as a stark reminder of the significant impacts of human activity on biodiversity. The situation in Bangladesh gradually becoming more common emphasizes the urgent need for strong conservation efforts.
The study mentions how hybridisation is a vital indicator of ecological change, raising serious concerns about species’ genetic health. Tanvir added that this study is groundbreaking, as it documents the first hybridisation incidents among these langurs in Bangladesh and their entire distribution range.
Hybrids being fertile could lead to the extinction of the parent species. “Additionally, mixing species can enable the spread of diseases between previously unconnected populations, posing risks to both wildlife and human health, since these animals are often hunted and traded,” said Sabit Hasan, a researcher of the study.
The study blamed human activities such as palm oil deforestation, habitat fragmentation, hunting and trapping of primates as some of the causes that can increase the risk of such hybridisation.
“The existence of fertile hybrids is particularly alarming because it suggests that gene flow between these two endangered species could irreversibly affect their future genetic composition,” Tanvir said.
The genetically confirmed hybrid with its half-sibling feeding on fruits at Satchari National Park. Image by Harish Debbarma.The genetically confirmed juvenile hybrid with its capped langur mother and Phayre’s langur father at Satchari National Park. Image by Mahmudul Bari.Primates of Bangladesh
Ten of the 121 mammal species found in Bangladesh are primates. According to the hybridisation study, Bangladesh is home to less than 500 Phayre’s langurs and 600 capped langurs.
The Phayre’s langur has a brown to grey-brown back, white fur on its belly and face, and a “spectacled” appearance due to wide white rings around its eyes. Its face and extremities are black, and it has long hair on its head that points backward. Additionally, its tail is longer than its body and has a tuft of dark hair at the tip.
The capped langur is known for its distinctive crown of long, erect hairs on its head. It has a black face, grey to blackish-grey fur on top, and brownish-yellow or orange fur below, with the distal half of its tail being blackish.
The study suggested the government prioritize habitat preservation and create corridors to connect isolated primate populations, facilitating natural langur dispersal.
“If we don’t take action now, we risk losing not just two monkey species but also a vital part of Bangladesh’s biodiversity,” Tanvir said.
A juvenile hybrid with its Phayre’s langur father in Satchari National Park. Image by Rasel Debbarma.Banner image: The genetically confirmed hybrid (right) with its capped langur mother at Satchari National Park. Image by Harish Debbarma.
This article was originally published in Mongabay and was written by Mohammad Al-Masum Molla, read the original article. Republished under Creative Commons attribution licence. Research by Ahmed, T., Hasan, S., Nath, S., Biswas, S. … Roos, C. (2024). Mixed-Species Groups and Genetically Confirmed Hybridization Between Sympatric Phayre’s Langur (Trachypithecus phayrei) and Capped Langur (T. pileatus) in Northeast Bangladesh. International Journal of Primatology. doi:10.1007/s10764-024-00459-x
ENDS
Learn about other animals endangered by palm oil and other agriculture
Global South America S.E. Asia India Africa West Papua & PNGSunda Flying Lemur Galeopterus variegatus
Keep readingWestern Parotia Parotia sefilata
Keep readingCapped Langur Trachypithecus pileatus
Keep readingMountain Tapir Tapirus pinchaque
Keep reading Keep reading Keep readingLearn about “sustainable” palm oil greenwashing
Read more about RSPO greenwashing
Lying Fake labels Indigenous Land-grabbing Human rights abuses Deforestation Human health hazardsA 2019 World Health Organisation (WHO) report into the palm oil industry and RSPO finds extensive greenwashing of palm oil deforestation and the murder of endangered animals (i.e. biodiversity loss)
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Read more3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.
https://twitter.com/CuriousApe4/status/1526136783557529600?s=20
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Pledge your support #animalBehaviour #AnimalBiodiversityNews #animalExtinction #animalRights #animals #Bangladesh #biodiversity #Boycott4wildlife #BoycottPalmOil #CappedLangur #CappedLangurTrachypithecusPileatus #deforestation #hunting #India #langur #Langurs #monkey #monkeys #PalmOil #palmOilDeforestation #palmoil #PhayreSLeafMonkeyTrachypithecusPhayrei #Primate #research #species #timber #vegan -
Murder Over Inter-Caste Relationship In Hyderabad Peddled With Communal Claim
BOOM spoke to Petbasheerabad SHO Gouri Prashanth who ruled out any communal angle to the killing. The SHO confirmed that woman and her relatives belongs to the OBC community.
#hyderabad #HonourKilling #CasteViolence #caste #casteism #RightToLove #HumanRights #OBC #telangana #india
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His family donated his organs and asked people not to grieve, saying he is now in a “happy place" https://english.mathrubhumi.com/news/india/harish-rana-last-rites-organ-donation-passive-euthanasia-lp7lanha?utm_source=dlvr.it&utm_medium=mastodon #HarishRana #Euthanasia #India #SupremeCourt #Ghaziabad
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The Supreme Court rules that life support can be withdrawn for patients in a permanent vegetative state. Read the full details of this landmark judgment here. https://english.mathrubhumi.com/news/india/supreme-court-ruling-right-to-die-with-dignity-harish-rana-case-e16mpj9h?utm_source=dlvr.it&utm_medium=mastodon #SupremeCourt #RightToDie #HarishRana #Euthanasia
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Who gets to write about Ambedkar?
Six new reappraisals show the gulf between Dalit-Bahujan and anglophone writing on B R Ambedkar. Harish S Wankhede writes.
#BRAmbedkar #ambedkar #biography #history #dalits #bahujan #ambedkarites #SocialJustice #caste #SavitaAmbedkar #DhananjayKeer #ChristopheJaffrelot #GailOmvedt #ValerianRodrigues #buddhism #JohnDewey #ScottRStroud #WilliamGould #SantoshDass #ShashiTharoor #books #bookstodon #india #activism
https://www.himalmag.com/ambedkar-biography-caste-dalit-bahujan-savita-hindutva-gandhi-phule-buddha/
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One of the films shown at the #InternationalUraniumFilmFestival was "#Jadugoda: The Land of Magic"" by Satish Munda. Unfortunately, the Vimeo link to the full movie isn't working, so here's a YT link: https://www.youtube.com/watch?v=zjwwY3GdCAo
Movie description:
"Jadugoda - The Land of Magic
#India, 2023, Director SATISH MUNDA, Producer, RAJAT AGRAWAL, Key Cast, HARISH KHANNA, CHANDA MEHRA, Short fiction, 19 minutes 32 seconds, Hindi, English subtitles.
"In 1998, the town of Jadugoda also called the Land of Magic, is at India’s forefront for mining #Uranium. The economic boost in India is catalyzing the nation’s dream to establish its name in the list of the world’s most powerful nuclear forces. However, due to this, Jadugoda is being continuously poisoned by the #UraniumMining dump. Aloof from the desire for nuclear power and geo-political warfare, the innocent and poor tribals in the town who aim to live a simple livelihood are suffering from these radiations daily. Men are getting scarred and crippled while women are giving birth to stillborn and disabled children. Many women are suffering from infertility too. As a result of this, families from nearby towns and villages are not willing to get their kids married to any person in this village, especially that to women. In these unfortunate times, Dama, a 45-year-old farmer, who resides in the indigenous village Dungridih dreams of getting his only daughter, Rupni married. He is elated that he has received a marriage proposal from a prosperous family for his daughter but in the 24 hours prior to their visit to his house, his anxiousness increases with every passing minute as his biggest concern is to keep the condition of the village hidden from them."
Movie trailer: https://vimeo.com/920385345
A documentary about the situation at Jadugoda can be found here:
https://www.youtube.com/watch?v=-VGEt_Uy1NUArticle from the Hindustani Times:
Jadugoda: The Nuclear Graveyard
By Chinky Shukla"By 2032, India hopes to generate 63 gigawatts of nuclear power that would cut its dependence for energy and put it on the path to progress. But progress, they say, comes at a price. Jadugoda, in the eastern state of Jharkhand, is that price.
"This small township is home to the world's finest uranium ore, magnesium diuranate, the fodder for India's nuclear dream and Jadugoda's nightmare. This lethal feed for the country's reactors is slowly finishing an entire generation of tribals living in the area. The photo essay documents this dark legacy of Jadugoda, the horrifying expense of unchecked progress through the eyes of its people.
"A native of Jadugoda, Laxmi Das has had three miscarriages and lost five children within a week of their births. When her ninth child, Gudia, survived, she considered herself fortunate until she discovered that her baby has cerebral palsy and would be bed ridden for life. Gudia passed away in 2012, leaving the scars of her memory. In Jadugoda, a uranium-rich district in the eastern Indian state of Jharkhand, there are many women who share Laxmi's fate.
The people of Jadugoda are exposed to radioactivity in several ways: uranium mining and milling operations produce dust and release radon gas, both of which are inhaled by miners and cause internal irradiation. Uranium ore is transported in uncovered trucks on bumpy roads, causing radioactive debris to fall off and land on the side of the road. The mine's tailings retain high percentage of the original radiation and are dumped in unlined and uncovered ponds, which emit radon gas and gamma radiation."
https://www.hindustantimes.com/static/groundglass/jadugoda-the-nuclear-graveyard.html#Downwinders #UraniumFilmFestival #InternationalUraniumFilmFestival #WaterIsLife #NoNukes #NoWar #UraniumMining #NoUraniumMining #EnvironmentalRacism #UraniumPollution
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🔍 What's next for #OpenSource?
Watch Tony Wasserman and Harish Pillay as they dive into the evolving landscape of open source—from new licensing trends and commercialization challenges to the rise of #AI and the role of #OSPOs at #FOSSASIASummit2025
With decades of experience, the panelists unpack how companies, governments, and communities are adapting, and what the future might hold for developers and the open source ecosystem.
🎥 Click here https://youtu.be/4LLPYsNKXcY
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🔍 What's next for #OpenSource?
Watch Tony Wasserman and Harish Pillay as they dive into the evolving landscape of open source—from new licensing trends and commercialization challenges to the rise of #AI and the role of #OSPOs at #FOSSASIASummit2025
With decades of experience, the panelists unpack how companies, governments, and communities are adapting, and what the future might hold for developers and the open source ecosystem.
🎥 Click here https://youtu.be/4LLPYsNKXcY
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🔍 What's next for #OpenSource?
Watch Tony Wasserman and Harish Pillay as they dive into the evolving landscape of open source—from new licensing trends and commercialization challenges to the rise of #AI and the role of #OSPOs at #FOSSASIASummit2025
With decades of experience, the panelists unpack how companies, governments, and communities are adapting, and what the future might hold for developers and the open source ecosystem.
🎥 Click here https://youtu.be/4LLPYsNKXcY
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🔍 What's next for #OpenSource?
Watch Tony Wasserman and Harish Pillay as they dive into the evolving landscape of open source—from new licensing trends and commercialization challenges to the rise of #AI and the role of #OSPOs at #FOSSASIASummit2025
With decades of experience, the panelists unpack how companies, governments, and communities are adapting, and what the future might hold for developers and the open source ecosystem.
🎥 Click here https://youtu.be/4LLPYsNKXcY
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🔍 What's next for #OpenSource?
Watch Tony Wasserman and Harish Pillay as they dive into the evolving landscape of open source—from new licensing trends and commercialization challenges to the rise of #AI and the role of #OSPOs at #FOSSASIASummit2025
With decades of experience, the panelists unpack how companies, governments, and communities are adapting, and what the future might hold for developers and the open source ecosystem.
🎥 Click here https://youtu.be/4LLPYsNKXcY
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Beautiful and Doomed: Saving Bangladesh’s Langurs From Extinction
A recent study has found hybridisation (interbreeding) between critically endangered Phayre’s #langurs and endangered capped langurs in #Bangladesh, raises serious concerns about their genetic health and future survival as distinct species. Hybridisation is a serious sign of ecological disruption, and researchers point to human-related threats such as #palmoil and #timber #deforestation, habitat fragmentation, and #hunting as key drivers for them interbreeding. These pressures not only push the species to hybridise but also threaten their long-term existence in the wild, highlighting the urgent need for conservation efforts to address habitat destruction and protect these seriously endangered primates. 🌿 Help them when you shop, go #vegan and #BoycottPalmOil #Boycott4WildlifeBeautiful Capped Langurs and Phayre’s #Langurs are interbreeding, risking both #species’ survival. Pressures of #palmoil #deforestation and #hunting are pushing the #monkeys to the edge in #Bangladesh #Boycottpalmoil #Boycott4Wildlife 🌴🚫 @palmoildetect https://wp.me/pcFhgU-9bY
Share to BlueSky Share to TwitterHybridisation/interbreeding of two beautiful #langur 🐵🐒species in #Bangladesh puts both #animals in serious peril finds #research study 😭. #Palmoil #deforestation is a major threat. Fight back and #Boycottpalmoil #Boycott4Wildlife 🌴🛢️⛔ @palmoildetect.bsky.social https://wp.me/pcFhgU-9bY
Share to BlueSky Share to TwitterThis article was originally published in Mongabay and was written by Mohammad Al-Masum Molla, read the original article. Republished under Creative Commons attribution licence. Research by Ahmed, T., Hasan, S., Nath, S., Biswas, S. … Roos, C. (2024). Mixed-Species Groups and Genetically Confirmed Hybridization Between Sympatric Phayre’s Langur (Trachypithecus phayrei) and Capped Langur (T. pileatus) in Northeast Bangladesh. International Journal of Primatology. doi:10.1007/s10764-024-00459-x
- Bangladesh is home to less than 500 Phayre’s langurs and 600 capped langurs in the rainforests in the country’s northeast.
- A recent study has unveiled a trend of hybridisation between Phayre’s langurs and capped langurs in Bangladesh, which are listed as critically endangered and endangered, respectively, by IUCN.
- Hybridisation is a vital indicator of ecological change, and researchers are raising serious concerns about the genetic health of the two species and their future existence in the wild.
- The study holds human activities such as deforestation, habitat fragmentation and hunting as some of the causes responsible for increasing the risk of hybridisation cases.
A recent study revealed a troubling trend among the wild monkey population in Bangladesh’s northeastern forests. The study, conducted by the German Primate Centre, unveiled a concerning tendency of hybridisation between Phayre’s langurs (Trachypithecus phayrei) and capped langurs (Trachypithecus pileatus), listed as critically endangered and endangered, respectively, within Bangladesh by IUCN.
This hybridisation of the endangered primates, which researchers of the study say is caused by habitat loss due to deforestation and other human interferences, could push them to extinction in a few generations.
“Bangladesh’s langur populations are small and isolated, limiting gene flow. This hybridisation in restricted populations heightens their extinction risk. Furthermore, our laws primarily protect pure langurs, leaving hybrids unprotected. If hybrids persist into future generations, we’ll face tough decisions about their role in our ecosystem,” Tanvir Ahmed, the study’s lead researcher, told Mongabay.
Monirul H. Khan, a professor at Jahangirnagar University’s Zoology Department, agreed with Tanvir and said that the significance of interbreeding is that these langurs don’t survive for a long time.
“They are usually born infertile. So the population of langur will gradually decrease,” he said.
The study, published in the International Journal of Primatology, recently found that out of 98 langur groups observed, eight comprised both Phayre’s and capped langurs.
“We analysed genetic samples of the species in the lab and confirmed one case of hybridisation. This langur had a capped langur mother and a Phayre’s langur father. Another female with a hybrid appearance showed signs of motherhood, indicating that at least female hybrids are fertile and give birth to young,” Tanvir said.
“The genetic characteristics of a distinct species tend to become most threatened when their hybrid females can reproduce. Fertile hybrid females threaten to bring the two species closer together as the offsprings begin to mix characteristics. That is exactly what could be happening to them,” he said.
The research shows that the ‘spectacled’ Phayre’s langurs and the capped langurs, with their distinctive shock of black fur on their heads, are under threat of losing their distinct genetic makeup to hybridisation.
Researchers conducted the study over five years, between 2018 and 2023, in six forests in northeastern Bangladesh — Lawachara National Park, Satchari National Park, Rema-Kalenga Wildlife Sanctuary, Rajkandi Reserve Forest, Patharia Hill Reserve Forest and Atora Hill Reserve Forest.
The study involved field surveys for 92 days between March 2018 and April 2019 and from July to December 2022, employing three trained local eco-guides to monitor the mixed-species groups until October 2023.
(Left) A mixed-species group of Phayre’s and capped langurs in Satchari National Park. (Right) A male hybrid of Phayre’s and capped langurs in Rema-Kalenga Wildlife Sanctuary. Image by Auritro Sattar. Images by Rasel Debbarma and Auritro Sattar.Why hybridisation is a concern
The study shows that, although it’s relatively rare, hybridisation among primates is an escalating concern worldwide, often driven by habitat loss and fragmentation. It serves as a stark reminder of the significant impacts of human activity on biodiversity. The situation in Bangladesh gradually becoming more common emphasizes the urgent need for strong conservation efforts.
The study mentions how hybridisation is a vital indicator of ecological change, raising serious concerns about species’ genetic health. Tanvir added that this study is groundbreaking, as it documents the first hybridisation incidents among these langurs in Bangladesh and their entire distribution range.
Hybrids being fertile could lead to the extinction of the parent species. “Additionally, mixing species can enable the spread of diseases between previously unconnected populations, posing risks to both wildlife and human health, since these animals are often hunted and traded,” said Sabit Hasan, a researcher of the study.
The study blamed human activities such as palm oil deforestation, habitat fragmentation, hunting and trapping of primates as some of the causes that can increase the risk of such hybridisation.
“The existence of fertile hybrids is particularly alarming because it suggests that gene flow between these two endangered species could irreversibly affect their future genetic composition,” Tanvir said.
The genetically confirmed hybrid with its half-sibling feeding on fruits at Satchari National Park. Image by Harish Debbarma.The genetically confirmed juvenile hybrid with its capped langur mother and Phayre’s langur father at Satchari National Park. Image by Mahmudul Bari.Primates of Bangladesh
Ten of the 121 mammal species found in Bangladesh are primates. According to the hybridisation study, Bangladesh is home to less than 500 Phayre’s langurs and 600 capped langurs.
The Phayre’s langur has a brown to grey-brown back, white fur on its belly and face, and a “spectacled” appearance due to wide white rings around its eyes. Its face and extremities are black, and it has long hair on its head that points backward. Additionally, its tail is longer than its body and has a tuft of dark hair at the tip.
The capped langur is known for its distinctive crown of long, erect hairs on its head. It has a black face, grey to blackish-grey fur on top, and brownish-yellow or orange fur below, with the distal half of its tail being blackish.
The study suggested the government prioritize habitat preservation and create corridors to connect isolated primate populations, facilitating natural langur dispersal.
“If we don’t take action now, we risk losing not just two monkey species but also a vital part of Bangladesh’s biodiversity,” Tanvir said.
A juvenile hybrid with its Phayre’s langur father in Satchari National Park. Image by Rasel Debbarma.Banner image: The genetically confirmed hybrid (right) with its capped langur mother at Satchari National Park. Image by Harish Debbarma.
This article was originally published in Mongabay and was written by Mohammad Al-Masum Molla, read the original article. Republished under Creative Commons attribution licence. Research by Ahmed, T., Hasan, S., Nath, S., Biswas, S. … Roos, C. (2024). Mixed-Species Groups and Genetically Confirmed Hybridization Between Sympatric Phayre’s Langur (Trachypithecus phayrei) and Capped Langur (T. pileatus) in Northeast Bangladesh. International Journal of Primatology. doi:10.1007/s10764-024-00459-x
ENDS
Learn about other animals endangered by palm oil and other agriculture
Global South America S.E. Asia India Africa West Papua & PNGSunda Flying Lemur Galeopterus variegatus
Keep readingWestern Parotia Parotia sefilata
Keep readingCapped Langur Trachypithecus pileatus
Keep readingMountain Tapir Tapirus pinchaque
Keep reading Keep reading Keep readingLearn about “sustainable” palm oil greenwashing
Read more about RSPO greenwashing
Lying Fake labels Indigenous Land-grabbing Human rights abuses Deforestation Human health hazardsA 2019 World Health Organisation (WHO) report into the palm oil industry and RSPO finds extensive greenwashing of palm oil deforestation and the murder of endangered animals (i.e. biodiversity loss)
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https://twitter.com/CuriousApe4/status/1526136783557529600?s=20
https://twitter.com/PhillDixon1/status/1749010345555788144?s=20
https://twitter.com/mugabe139/status/1678027567977078784?s=20
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Pledge your support #animalBehaviour #AnimalBiodiversityNews #animalExtinction #animalRights #animals #Bangladesh #biodiversity #Boycott4wildlife #BoycottPalmOil #CappedLangur #CappedLangurTrachypithecusPileatus #deforestation #hunting #India #langur #Langurs #monkey #monkeys #PalmOil #palmOilDeforestation #palmoil #PhayreSLeafMonkeyTrachypithecusPhayrei #Primate #research #species #timber #vegan -
Beautiful and Doomed: Saving Bangladesh’s Langurs From Extinction
A recent study has found hybridisation (interbreeding) between critically endangered Phayre’s #langurs and endangered capped langurs in #Bangladesh, raises serious concerns about their genetic health and future survival as distinct species. Hybridisation is a serious sign of ecological disruption, and researchers point to human-related threats such as #palmoil and #timber #deforestation, habitat fragmentation, and #hunting as key drivers for them interbreeding. These pressures not only push the species to hybridise but also threaten their long-term existence in the wild, highlighting the urgent need for conservation efforts to address habitat destruction and protect these seriously endangered primates. 🌿 Help them when you shop, go #vegan and #BoycottPalmOil #Boycott4WildlifeBeautiful Capped Langurs and Phayre’s #Langurs are interbreeding, risking both #species’ survival. Pressures of #palmoil #deforestation and #hunting are pushing the #monkeys to the edge in #Bangladesh #Boycottpalmoil #Boycott4Wildlife 🌴🚫 @palmoildetect https://wp.me/pcFhgU-9bY
Share to BlueSky Share to TwitterHybridisation/interbreeding of two beautiful #langur 🐵🐒species in #Bangladesh puts both #animals in serious peril finds #research study 😭. #Palmoil #deforestation is a major threat. Fight back and #Boycottpalmoil #Boycott4Wildlife 🌴🛢️⛔ @palmoildetect.bsky.social https://wp.me/pcFhgU-9bY
Share to BlueSky Share to TwitterThis article was originally published in Mongabay and was written by Mohammad Al-Masum Molla, read the original article. Republished under Creative Commons attribution licence. Research by Ahmed, T., Hasan, S., Nath, S., Biswas, S. … Roos, C. (2024). Mixed-Species Groups and Genetically Confirmed Hybridization Between Sympatric Phayre’s Langur (Trachypithecus phayrei) and Capped Langur (T. pileatus) in Northeast Bangladesh. International Journal of Primatology. doi:10.1007/s10764-024-00459-x
- Bangladesh is home to less than 500 Phayre’s langurs and 600 capped langurs in the rainforests in the country’s northeast.
- A recent study has unveiled a trend of hybridisation between Phayre’s langurs and capped langurs in Bangladesh, which are listed as critically endangered and endangered, respectively, by IUCN.
- Hybridisation is a vital indicator of ecological change, and researchers are raising serious concerns about the genetic health of the two species and their future existence in the wild.
- The study holds human activities such as deforestation, habitat fragmentation and hunting as some of the causes responsible for increasing the risk of hybridisation cases.
A recent study revealed a troubling trend among the wild monkey population in Bangladesh’s northeastern forests. The study, conducted by the German Primate Centre, unveiled a concerning tendency of hybridisation between Phayre’s langurs (Trachypithecus phayrei) and capped langurs (Trachypithecus pileatus), listed as critically endangered and endangered, respectively, within Bangladesh by IUCN.
This hybridisation of the endangered primates, which researchers of the study say is caused by habitat loss due to deforestation and other human interferences, could push them to extinction in a few generations.
“Bangladesh’s langur populations are small and isolated, limiting gene flow. This hybridisation in restricted populations heightens their extinction risk. Furthermore, our laws primarily protect pure langurs, leaving hybrids unprotected. If hybrids persist into future generations, we’ll face tough decisions about their role in our ecosystem,” Tanvir Ahmed, the study’s lead researcher, told Mongabay.
Monirul H. Khan, a professor at Jahangirnagar University’s Zoology Department, agreed with Tanvir and said that the significance of interbreeding is that these langurs don’t survive for a long time.
“They are usually born infertile. So the population of langur will gradually decrease,” he said.
The study, published in the International Journal of Primatology, recently found that out of 98 langur groups observed, eight comprised both Phayre’s and capped langurs.
“We analysed genetic samples of the species in the lab and confirmed one case of hybridisation. This langur had a capped langur mother and a Phayre’s langur father. Another female with a hybrid appearance showed signs of motherhood, indicating that at least female hybrids are fertile and give birth to young,” Tanvir said.
“The genetic characteristics of a distinct species tend to become most threatened when their hybrid females can reproduce. Fertile hybrid females threaten to bring the two species closer together as the offsprings begin to mix characteristics. That is exactly what could be happening to them,” he said.
The research shows that the ‘spectacled’ Phayre’s langurs and the capped langurs, with their distinctive shock of black fur on their heads, are under threat of losing their distinct genetic makeup to hybridisation.
Researchers conducted the study over five years, between 2018 and 2023, in six forests in northeastern Bangladesh — Lawachara National Park, Satchari National Park, Rema-Kalenga Wildlife Sanctuary, Rajkandi Reserve Forest, Patharia Hill Reserve Forest and Atora Hill Reserve Forest.
The study involved field surveys for 92 days between March 2018 and April 2019 and from July to December 2022, employing three trained local eco-guides to monitor the mixed-species groups until October 2023.
(Left) A mixed-species group of Phayre’s and capped langurs in Satchari National Park. (Right) A male hybrid of Phayre’s and capped langurs in Rema-Kalenga Wildlife Sanctuary. Image by Auritro Sattar. Images by Rasel Debbarma and Auritro Sattar.Why hybridisation is a concern
The study shows that, although it’s relatively rare, hybridisation among primates is an escalating concern worldwide, often driven by habitat loss and fragmentation. It serves as a stark reminder of the significant impacts of human activity on biodiversity. The situation in Bangladesh gradually becoming more common emphasizes the urgent need for strong conservation efforts.
The study mentions how hybridisation is a vital indicator of ecological change, raising serious concerns about species’ genetic health. Tanvir added that this study is groundbreaking, as it documents the first hybridisation incidents among these langurs in Bangladesh and their entire distribution range.
Hybrids being fertile could lead to the extinction of the parent species. “Additionally, mixing species can enable the spread of diseases between previously unconnected populations, posing risks to both wildlife and human health, since these animals are often hunted and traded,” said Sabit Hasan, a researcher of the study.
The study blamed human activities such as palm oil deforestation, habitat fragmentation, hunting and trapping of primates as some of the causes that can increase the risk of such hybridisation.
“The existence of fertile hybrids is particularly alarming because it suggests that gene flow between these two endangered species could irreversibly affect their future genetic composition,” Tanvir said.
The genetically confirmed hybrid with its half-sibling feeding on fruits at Satchari National Park. Image by Harish Debbarma.The genetically confirmed juvenile hybrid with its capped langur mother and Phayre’s langur father at Satchari National Park. Image by Mahmudul Bari.Primates of Bangladesh
Ten of the 121 mammal species found in Bangladesh are primates. According to the hybridisation study, Bangladesh is home to less than 500 Phayre’s langurs and 600 capped langurs.
The Phayre’s langur has a brown to grey-brown back, white fur on its belly and face, and a “spectacled” appearance due to wide white rings around its eyes. Its face and extremities are black, and it has long hair on its head that points backward. Additionally, its tail is longer than its body and has a tuft of dark hair at the tip.
The capped langur is known for its distinctive crown of long, erect hairs on its head. It has a black face, grey to blackish-grey fur on top, and brownish-yellow or orange fur below, with the distal half of its tail being blackish.
The study suggested the government prioritize habitat preservation and create corridors to connect isolated primate populations, facilitating natural langur dispersal.
“If we don’t take action now, we risk losing not just two monkey species but also a vital part of Bangladesh’s biodiversity,” Tanvir said.
A juvenile hybrid with its Phayre’s langur father in Satchari National Park. Image by Rasel Debbarma.Banner image: The genetically confirmed hybrid (right) with its capped langur mother at Satchari National Park. Image by Harish Debbarma.
This article was originally published in Mongabay and was written by Mohammad Al-Masum Molla, read the original article. Republished under Creative Commons attribution licence. Research by Ahmed, T., Hasan, S., Nath, S., Biswas, S. … Roos, C. (2024). Mixed-Species Groups and Genetically Confirmed Hybridization Between Sympatric Phayre’s Langur (Trachypithecus phayrei) and Capped Langur (T. pileatus) in Northeast Bangladesh. International Journal of Primatology. doi:10.1007/s10764-024-00459-x
ENDS
Learn about other animals endangered by palm oil and other agriculture
Global South America S.E. Asia India Africa West Papua & PNGSunda Flying Lemur Galeopterus variegatus
Keep readingWestern Parotia Parotia sefilata
Keep readingCapped Langur Trachypithecus pileatus
Keep readingMountain Tapir Tapirus pinchaque
Keep reading Keep reading Keep readingLearn about “sustainable” palm oil greenwashing
Read more about RSPO greenwashing
Lying Fake labels Indigenous Land-grabbing Human rights abuses Deforestation Human health hazardsA 2019 World Health Organisation (WHO) report into the palm oil industry and RSPO finds extensive greenwashing of palm oil deforestation and the murder of endangered animals (i.e. biodiversity loss)
Read moreTake Action in Five Ways
1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.
Enter your email address
Sign Up
Join 3,177 other subscribers2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.
Read moreMel Lumby: Dedicated Devotee to Borneo’s Living Beings
Read moreAnthropologist and Author Dr Sophie Chao
Read moreHealth Physician Dr Evan Allen
Read moreThe World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert
Read moreHow do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy
Read more3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.
https://twitter.com/CuriousApe4/status/1526136783557529600?s=20
https://twitter.com/PhillDixon1/status/1749010345555788144?s=20
https://twitter.com/mugabe139/status/1678027567977078784?s=20
4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.
5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here
Pledge your support #animalBehaviour #AnimalBiodiversityNews #animalExtinction #animalRights #animals #Bangladesh #biodiversity #Boycott4wildlife #BoycottPalmOil #CappedLangur #CappedLangurTrachypithecusPileatus #deforestation #hunting #India #langur #Langurs #monkey #monkeys #PalmOil #palmOilDeforestation #palmoil #PhayreSLeafMonkeyTrachypithecusPhayrei #Primate #research #species #timber #vegan -
Beautiful and Doomed: Saving Bangladesh’s Langurs From Extinction
A recent study has found hybridisation (interbreeding) between critically endangered Phayre’s #langurs and endangered capped langurs in #Bangladesh, raises serious concerns about their genetic health and future survival as distinct species. Hybridisation is a serious sign of ecological disruption, and researchers point to human-related threats such as #palmoil and #timber #deforestation, habitat fragmentation, and #hunting as key drivers for them interbreeding. These pressures not only push the species to hybridise but also threaten their long-term existence in the wild, highlighting the urgent need for conservation efforts to address habitat destruction and protect these seriously endangered primates. 🌿 Help them when you shop, go #vegan and #BoycottPalmOil #Boycott4WildlifeBeautiful Capped Langurs and Phayre’s #Langurs are interbreeding, risking both #species’ survival. Pressures of #palmoil #deforestation and #hunting are pushing the #monkeys to the edge in #Bangladesh #Boycottpalmoil #Boycott4Wildlife 🌴🚫 @palmoildetect https://wp.me/pcFhgU-9bY
Share to BlueSky Share to TwitterHybridisation/interbreeding of two beautiful #langur 🐵🐒species in #Bangladesh puts both #animals in serious peril finds #research study 😭. #Palmoil #deforestation is a major threat. Fight back and #Boycottpalmoil #Boycott4Wildlife 🌴🛢️⛔ @palmoildetect.bsky.social https://wp.me/pcFhgU-9bY
Share to BlueSky Share to TwitterThis article was originally published in Mongabay and was written by Mohammad Al-Masum Molla, read the original article. Republished under Creative Commons attribution licence. Research by Ahmed, T., Hasan, S., Nath, S., Biswas, S. … Roos, C. (2024). Mixed-Species Groups and Genetically Confirmed Hybridization Between Sympatric Phayre’s Langur (Trachypithecus phayrei) and Capped Langur (T. pileatus) in Northeast Bangladesh. International Journal of Primatology. doi:10.1007/s10764-024-00459-x
- Bangladesh is home to less than 500 Phayre’s langurs and 600 capped langurs in the rainforests in the country’s northeast.
- A recent study has unveiled a trend of hybridisation between Phayre’s langurs and capped langurs in Bangladesh, which are listed as critically endangered and endangered, respectively, by IUCN.
- Hybridisation is a vital indicator of ecological change, and researchers are raising serious concerns about the genetic health of the two species and their future existence in the wild.
- The study holds human activities such as deforestation, habitat fragmentation and hunting as some of the causes responsible for increasing the risk of hybridisation cases.
A recent study revealed a troubling trend among the wild monkey population in Bangladesh’s northeastern forests. The study, conducted by the German Primate Centre, unveiled a concerning tendency of hybridisation between Phayre’s langurs (Trachypithecus phayrei) and capped langurs (Trachypithecus pileatus), listed as critically endangered and endangered, respectively, within Bangladesh by IUCN.
This hybridisation of the endangered primates, which researchers of the study say is caused by habitat loss due to deforestation and other human interferences, could push them to extinction in a few generations.
“Bangladesh’s langur populations are small and isolated, limiting gene flow. This hybridisation in restricted populations heightens their extinction risk. Furthermore, our laws primarily protect pure langurs, leaving hybrids unprotected. If hybrids persist into future generations, we’ll face tough decisions about their role in our ecosystem,” Tanvir Ahmed, the study’s lead researcher, told Mongabay.
Monirul H. Khan, a professor at Jahangirnagar University’s Zoology Department, agreed with Tanvir and said that the significance of interbreeding is that these langurs don’t survive for a long time.
“They are usually born infertile. So the population of langur will gradually decrease,” he said.
The study, published in the International Journal of Primatology, recently found that out of 98 langur groups observed, eight comprised both Phayre’s and capped langurs.
“We analysed genetic samples of the species in the lab and confirmed one case of hybridisation. This langur had a capped langur mother and a Phayre’s langur father. Another female with a hybrid appearance showed signs of motherhood, indicating that at least female hybrids are fertile and give birth to young,” Tanvir said.
“The genetic characteristics of a distinct species tend to become most threatened when their hybrid females can reproduce. Fertile hybrid females threaten to bring the two species closer together as the offsprings begin to mix characteristics. That is exactly what could be happening to them,” he said.
The research shows that the ‘spectacled’ Phayre’s langurs and the capped langurs, with their distinctive shock of black fur on their heads, are under threat of losing their distinct genetic makeup to hybridisation.
Researchers conducted the study over five years, between 2018 and 2023, in six forests in northeastern Bangladesh — Lawachara National Park, Satchari National Park, Rema-Kalenga Wildlife Sanctuary, Rajkandi Reserve Forest, Patharia Hill Reserve Forest and Atora Hill Reserve Forest.
The study involved field surveys for 92 days between March 2018 and April 2019 and from July to December 2022, employing three trained local eco-guides to monitor the mixed-species groups until October 2023.
(Left) A mixed-species group of Phayre’s and capped langurs in Satchari National Park. (Right) A male hybrid of Phayre’s and capped langurs in Rema-Kalenga Wildlife Sanctuary. Image by Auritro Sattar. Images by Rasel Debbarma and Auritro Sattar.Why hybridisation is a concern
The study shows that, although it’s relatively rare, hybridisation among primates is an escalating concern worldwide, often driven by habitat loss and fragmentation. It serves as a stark reminder of the significant impacts of human activity on biodiversity. The situation in Bangladesh gradually becoming more common emphasizes the urgent need for strong conservation efforts.
The study mentions how hybridisation is a vital indicator of ecological change, raising serious concerns about species’ genetic health. Tanvir added that this study is groundbreaking, as it documents the first hybridisation incidents among these langurs in Bangladesh and their entire distribution range.
Hybrids being fertile could lead to the extinction of the parent species. “Additionally, mixing species can enable the spread of diseases between previously unconnected populations, posing risks to both wildlife and human health, since these animals are often hunted and traded,” said Sabit Hasan, a researcher of the study.
The study blamed human activities such as palm oil deforestation, habitat fragmentation, hunting and trapping of primates as some of the causes that can increase the risk of such hybridisation.
“The existence of fertile hybrids is particularly alarming because it suggests that gene flow between these two endangered species could irreversibly affect their future genetic composition,” Tanvir said.
The genetically confirmed hybrid with its half-sibling feeding on fruits at Satchari National Park. Image by Harish Debbarma.The genetically confirmed juvenile hybrid with its capped langur mother and Phayre’s langur father at Satchari National Park. Image by Mahmudul Bari.Primates of Bangladesh
Ten of the 121 mammal species found in Bangladesh are primates. According to the hybridisation study, Bangladesh is home to less than 500 Phayre’s langurs and 600 capped langurs.
The Phayre’s langur has a brown to grey-brown back, white fur on its belly and face, and a “spectacled” appearance due to wide white rings around its eyes. Its face and extremities are black, and it has long hair on its head that points backward. Additionally, its tail is longer than its body and has a tuft of dark hair at the tip.
The capped langur is known for its distinctive crown of long, erect hairs on its head. It has a black face, grey to blackish-grey fur on top, and brownish-yellow or orange fur below, with the distal half of its tail being blackish.
The study suggested the government prioritize habitat preservation and create corridors to connect isolated primate populations, facilitating natural langur dispersal.
“If we don’t take action now, we risk losing not just two monkey species but also a vital part of Bangladesh’s biodiversity,” Tanvir said.
A juvenile hybrid with its Phayre’s langur father in Satchari National Park. Image by Rasel Debbarma.Banner image: The genetically confirmed hybrid (right) with its capped langur mother at Satchari National Park. Image by Harish Debbarma.
This article was originally published in Mongabay and was written by Mohammad Al-Masum Molla, read the original article. Republished under Creative Commons attribution licence. Research by Ahmed, T., Hasan, S., Nath, S., Biswas, S. … Roos, C. (2024). Mixed-Species Groups and Genetically Confirmed Hybridization Between Sympatric Phayre’s Langur (Trachypithecus phayrei) and Capped Langur (T. pileatus) in Northeast Bangladesh. International Journal of Primatology. doi:10.1007/s10764-024-00459-x
ENDS
Learn about other animals endangered by palm oil and other agriculture
Global South America S.E. Asia India Africa West Papua & PNGSunda Flying Lemur Galeopterus variegatus
Keep readingWestern Parotia Parotia sefilata
Keep readingCapped Langur Trachypithecus pileatus
Keep readingMountain Tapir Tapirus pinchaque
Keep reading Keep reading Keep readingLearn about “sustainable” palm oil greenwashing
Read more about RSPO greenwashing
Lying Fake labels Indigenous Land-grabbing Human rights abuses Deforestation Human health hazardsA 2019 World Health Organisation (WHO) report into the palm oil industry and RSPO finds extensive greenwashing of palm oil deforestation and the murder of endangered animals (i.e. biodiversity loss)
Read moreTake Action in Five Ways
1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.
Enter your email address
Sign Up
Join 3,177 other subscribers2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.
Read moreMel Lumby: Dedicated Devotee to Borneo’s Living Beings
Read moreAnthropologist and Author Dr Sophie Chao
Read moreHealth Physician Dr Evan Allen
Read moreThe World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert
Read moreHow do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy
Read more3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.
https://twitter.com/CuriousApe4/status/1526136783557529600?s=20
https://twitter.com/PhillDixon1/status/1749010345555788144?s=20
https://twitter.com/mugabe139/status/1678027567977078784?s=20
4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.
5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here
Pledge your support #animalBehaviour #AnimalBiodiversityNews #animalExtinction #animalRights #animals #Bangladesh #biodiversity #Boycott4wildlife #BoycottPalmOil #CappedLangur #CappedLangurTrachypithecusPileatus #deforestation #hunting #India #langur #Langurs #monkey #monkeys #PalmOil #palmOilDeforestation #palmoil #PhayreSLeafMonkeyTrachypithecusPhayrei #Primate #research #species #timber #vegan