Factors Determining Decline in Sex Ratio in Kuwaiti Population [PDF]
المجلة المصرية للسکـان وتنظيم الأسرة, 1985 Census data of kuwait show that the sex ratio among kuwaiti nationals has been declining. This paper examines the influence of varimus factors on sex ratio.
Mostafa El-Shalakani
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Temperature-dependent sex determination in fish revisited: Prevalence a single sex ratio response pattern, and possible effects of climate change. [PDF]
, 2008 Ospina-Álvarez N, Piferrer F (2008) Temperature-Dependent Sex Determination in Fish Revisited: Prevalence, a Single Sex Ratio Response Pattern, and Possible Effects of Climate Change. PLoS ONE 3(7): e2837.
Piferrer, Francesc +7 more
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EVALUATION OF SEMEN SEX RATIO IN COOLED AND FROZEN SEMEN STRAWS BY REAL-TIME PCR [PDF]
Basrah Journal of Veterinary Research, 2016 The study was demonstrated on quantitative evaluation of SRY and ZFX gene of (120) semenstraws from 10 Holliston bull (60) straws in cooling state 5C° and 60 straws after deep freezingin liquid nitrogen) .
Baqer Ja’fer. Hassan +2 more
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Digit Ratio (2D:4D): A Biomarker for Prenatal Sex Steroids and Adult Sex Steroids in Challenge Situations [PDF]
, 2014 Digit ratio (2D:4D) denotes the relative length of the second and fourth digits. This ratio is considered to be a biomarker of the balance between fetal testosterone (T) and estrogen (E) in a narrow window of early ontogeny.
Liam Kilduff +20 more
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Reproduction, 1968 Summary. The proportion of 119 male to 100 female live births in the chinchilla is considerably higher than the values reported for most other mammals. This excess of male births might be connected with the unusually pronounced difference in size of the X- and Y-chromosomes.
openaire +2 more sources
Conflict over condition-dependent sex allocation can lead to mixed sex-determination systems [PDF]
, 2014 Theory suggests that genetic conflicts drive turnovers between sex-determining mechanisms, yet these studies only apply to cases where sex allocation is independent of environment or condition.
Kuijper, B +3 more
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Haploid selection, sex ratio bias, and transitions between sex-determining systems.
PLoS Biology, 2018 Sex determination is remarkably dynamic; many taxa display shifts in the location of sex-determining loci or the evolution of entirely new sex-determining systems. Predominant theories for why we observe such transitions generally conclude that novel sex-
Michael Francis Scott +2 more
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Do mothers prefer helpers or smaller litters? Birth sex ratio and litter size adjustment in cotton-top tamarins (Saguinus oedipus) [PDF]
, 2015 Sex allocation theory has been a remarkably productive field in behavioral ecology with empirical evidence regularly supporting quantitative theoretical predictions.
Fletcher, A.W. +5 more
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Modeling and forecasting sex differences in mortality: a sex-ratio approach
Genus, 2018 Female and male life expectancies have converged in most industrialized societies in recent decades. To achieve coherent forecasts between females and males, this convergence needs to be considered when forecasting sex-specific mortality.
Marie-Pier Bergeron-Boucher +3 more
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Natural and Engineered Sex Ratio Distortion in Insects
Frontiers in Ecology and Evolution, 2022 Insects have evolved highly diverse genetic sex-determination mechanisms and a relatively balanced male to female sex ratio is generally expected. However, selection may shift the optimal sex ratio while meiotic drive and endosymbiont manipulation can ...
Austin Compton +3 more
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