#sexratio — Public Fediverse posts

Operational sex ratio (Ecology 🏞️)

In the evolutionary biology of sexual reproduction, operational sex ratio is the ratio of sexually competing males that are ready to mate to sexually competing females that are ready to mate, or alternatively the local ratio of fertilizable females to sexually active males at any given time. This differs from physical ...

https://en.wikipedia.org/wiki/Operational_sex_ratio

#OperationalSexRatio #Ecology #SexRatio #Reproduction #MatingSystems #SexualSelection

Operational sex ratio (Ecology 🏞️)

In the evolutionary biology of sexual reproduction, operational sex ratio is the ratio of sexually competing males that are ready to mate to sexually competing females that are ready to mate, or alternatively the local ratio of fertilizable females to sexually active males at any given time. This differs from physical ...

https://en.wikipedia.org/wiki/Operational_sex_ratio

#OperationalSexRatio #Ecology #SexRatio #Reproduction #MatingSystems #SexualSelection

Operational sex ratio (Ecology 🏞️)

In the evolutionary biology of sexual reproduction, operational sex ratio is the ratio of sexually competing males that are ready to mate to sexually competing females that are ready to mate, or alternatively the local ratio of fertilizable females to sexually active males at any given time. This differs from physical ...

https://en.wikipedia.org/wiki/Operational_sex_ratio

#OperationalSexRatio #Ecology #SexRatio #Reproduction #MatingSystems #SexualSelection

Operational sex ratio (Ecology 🏞️)

In the evolutionary biology of sexual reproduction, operational sex ratio is the ratio of sexually competing males that are ready to mate to sexually competing females that are ready to mate, or alternatively the local ratio of fertilizable females to sexually active males at any given time. This differs from physical ...

https://en.wikipedia.org/wiki/Operational_sex_ratio

#OperationalSexRatio #Ecology #SexRatio #Reproduction #MatingSystems #SexualSelection

Why are tetrapods with ZZ/ZW sex-determination systems more male-skewed than XY/XX?. Phylogenetic analyses of a large dataset of wild #tetrapod species reveal that #SexDetermination systems influence adult #SexRatio via sex-biased adult mortality @PLOSBiology https://plos.io/43qTysJ

Atkins Coleman et al. investigate effects of parental care on offspring fitness and the extent to which adult offspring resemble their genetic parents in parental investment, revealing complex selective pressures favoring offspring sex-ratio adjustment.
https://www.journals.uchicago.edu/doi/10.1086/733104

#parentalCare #fitness #selectivePressures #sexRatio

New paper: "R.A. Fisher on J.A. Cobb's The Problem of the Sex-Ratio" (#OA)

http://hdl.handle.net/10023/28453

"Fisher's principle" of the sex ratio was first given by Cobb in 1914. Here I show that Fisher was aware of Cobb's paper.

#RonaldAylmerFisher #JohnAustinCobb #SexRatio #SexAllocation

New paper: "W. D. Hamilton and the golden sex ratio" (#OpenAccess)

https://doi.org/10.1016/j.jtbi.2023.111599

#GoldenRatio #SexRatio #SexAllocation #Haplodiploidy #MaleHaploidy#Image https://hotpot.ai/art-generator #OA

New paper: "The rarer-sex effect" (#OpenAccess)

https://royalsocietypublishing.org/doi/10.1098/rstb.2021.0500

Part of a #PhilTransB theme issue on "Half a century of evolutionary games"

https://royalsocietypublishing.org/toc/rstb/2023/378/1876 #SexRatio #SexAllocation #Evolution #GameTheory #UnbeatableStrategy @rsocpublishing #OA

The autism sex ratio

https://embrace-autism.com/the-autism-sex-ratio/

#Neurotransmitters #SimonBaron-Cohen #Autismdiagnosis #Sexdifferences #Underdiagnosis #Camouflaging #RachelLoomes #WilliamMandy #Acloserlook #Environment #Epigenetics #TonyAttwood #Prevalence #LauraHull #Genetics #Sexratio