Sex investment ratios in eusocial Hymenoptera support inclusive fitness theory [PDF]
, 2015 Inclusive fitness theory predicts that sex investment ratios in eusocial Hymenoptera are a function of the relatedness asymmetry (relative relatedness to females and males) of the individuals controlling sex allocation. In monogynous ants (with one queen
Bourke, Andrew F. G.
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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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Polyunsaturated fatty acids influence offspring sex ratio in cows [PDF]
, 2018 Dietary polyunsaturated fatty acids (PUFAs) can influence fertility in farm animals. Some evidence in mice and sheep have suggested that PUFAs may influence offspring sex ratio, which may have significant value for cattle production.
Abo El-Atta, A M A +6 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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Sex-ratio of Miridae (Hemiptera) taken via UV light-traps in Arkansas, USA. [PDF]
, 2017 We determined the sex-ratio of 1,095 plant bugs (Hemiptera: Miridae) taken from 60 individual UV light-trap samples in Clark County, Arkansas over a two year period.
Chordas, Stephen W., III, Tumlison, Renn
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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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Sex Ratio and Sexual Dimorphism in \u3ci\u3eFormica Exsectoides\u3c/i\u3e, the Allegheny Mound Ant (Hymenoptera: Formicidae) [PDF]
, 2018 We excavated 66 mounds from 6 populations of Formica exsectoides in Michigan jack pine, collecting sexual caste pupae for sex ratio estimates and measurement of dimorphism.
Bristow, C. M, Rowe, H. C
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Observable variations in human sex ratio at birth.
PLoS Computational Biology, 2021 The human sex ratio at birth (SRB), defined as the ratio between the number of newborn boys to the total number of newborns, is typically slightly greater than 1/2 (more boys than girls) and tends to vary across different geographical regions and time ...
Yanan Long +3 more
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Age Structure and Sex Ratio of Thrips Scirtothrips Dorsalis Hood (Thysanoptera : Thripidae) Associate with Mango Agroecosystem in East Java, Indonesia [PDF]
, 2013 A research aimed to investigate the age structure and sex ratio of S. dorsalis Hood in mango agroecosystem was conducted at PT. Trigatra Rajasa farm, Situbondo, East Java, Indonesia. The research was started from April to May 2013.
Affandi, A. (Affandi) +1 more
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Horizontal transfer of parasitic sex ratio distorters between crustacean hosts [PDF]
, 1998 Parasitic sex ratio distorters were artificially transferred within and between crustacean host species in order to study the effects of parasitism on host fitness and sex determination and to investigate parasite–host specificity. Implantation of Nosema
Dunn, A.M., Rigaud, T.
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