ArticleNature2015
Sex-specific demography and generalization of the Trivers-Willard theory.
Article in Nature, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
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Who cites it
31 citing papers in PubMed.
- Socioeconomic status and sex ratio in the contemporary Hungarian population.Evolutionary human sciences · 2024Article
- Isolating a culture of son preference among Armenian, Georgian and Azeri Parents in Soviet-era Russia.Evolutionary human sciences · 2024Article
- Reproductive biology ofCurrent zoology · 2023Article
- Variance in offspring sex ratio and maternal allocation in a highly invasive mammal.Ecology and evolution · 2023Article
- Reformulation of Trivers-Willard hypothesis for parental investment.Communications biology · 2022Article
- Matrilateral bias of grandparental investment in grandchildren persists despite the grandchildren's adverse early life experiences.Proceedings. Biological sciences · 2022Article
- Predicting evolution over multiple generations in deteriorating environments using evolutionarily explicit Integral Projection Models.Evolutionary applications · 2021Article
- Evolutionary dynamics of the Trivers-Willard effect: A nonparametric approach.Ecology and evolution · 2021Article
- Can an introduced predator select for adaptive sex allocation?Proceedings. Biological sciences · 2021Article
- Are human natal sex ratio differences across the world adaptive? A test of Fisher's principle.Biology letters · 2021Article
- Parasite intensity drives fetal development and sex allocation in a wild ungulate.Scientific reports · 2020Article
- Sexual dimorphism in chimpanzee (Pan troglodytes schweinfurthii) and human age-specific fertility.Journal of human evolution · 2020Article
- Exposure to high male density causes maternal stress and female-biased sex ratios in a mammal.Proceedings. Biological sciences · 2020Article
- Sibling quality and the haplodiploidy hypothesis.Biology letters · 2020Article
- Article
- A hierarchical Bayesian approach for handling missing classification data.Ecology and evolution · 2019Article
- Predictions of children's emotionality from evolutionary and epigenetic hypotheses.Scientific reports · 2019Article
- Demographic causes of adult sex ratio variation and their consequences for parental cooperation.Nature communications · 2018Article
- Revisiting the Trivers-Willard theory on birth sex ratio bias: Role of paternal condition in a Malagasy primate.PloS one · 2018Article
- Sex roles and adult sex ratios: insights from mammalian biology and consequences for primate behaviour.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017Review
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Trivers-Willard theory proposes that the sex ratio of offspring should vary with maternal condition when it has sex-specific influences on offspring fitness. In particular, mothers in good condition in polygynous and dimorphic species are predicted to produce an excess of sons, whereas mothers in poor condition should do the opposite. Despite the elegance of the theory, support for it has been limited. Here we extend and generalize the Trivers-Willard theory to explain the disparity between predictions and observations of offspring sex ratio. In polygynous species, males typically have higher mortality rates, different age-specific reproductive schedules and more risk-prone life history tactics than females; however, these differences are not currently incorporated into the Trivers-Willard theory. Using two-sex models parameterized with data from free-living mammal populations with contrasting levels of sex differences in demography, we demonstrate how sex differences in life history traits over the entire lifespan can lead to a wide range of sex allocation tactics, and show that correlations between maternal condition and offspring sex ratio alone are insufficient to conclude that mothers adaptively adjust offspring sex ratio.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.