Behavioral Ecology and Sociobiology, Journal Year: 2023, Volume and Issue: 77(12)
Published: Dec. 1, 2023
Language: Английский
PLoS Biology, Journal Year: 2024, Volume and Issue: 22(11), P. e3002856 - e3002856
Published: Nov. 4, 2024
Sexual selection, one of the central pillars evolutionary theory, has powerful effects on organismal morphology, behaviour, and population dynamics. However, current knowledge about geographical variation in this mechanism its underlying drivers remains highly incomplete, part because standardised data strength sexual selection is sparse even for well-studied organisms. Here, we use information mating systems—including incidence polygamy extra-pair paternity—to estimate intensity 10,671 (>99.9%) bird species distributed worldwide. We show that avian varies latitudinally, peaking at higher latitudes, although gradient reversed world’s most sexually selected birds—specialist frugivores—which are strongly associated with tropical forests. Phylogenetic models further reveal explained by temperature seasonality coupled a suite climate-associated factors, including migration, diet, territoriality. Overall, these analyses suggest climatic conditions leading to short, intense breeding seasons, or abundant patchy food resources, increase potential birds, driving latitudinal gradients selection. Our findings help resolve longstanding debates spatial mechanisms linked reproductive biology also provide comprehensive species-level set studies phenotypic evolution context global change.
Language: Английский
Citations
1
Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2034)
Published: Nov. 1, 2024
The Bateman gradient is a central concept in sexual selection theory that relates reproductive success to mate number, with important consequences for sex-specific selection. conventional expectation gradients are steeper males than females, implying benefit more from multiple mating females do. This claim supported by much empirical evidence as well mathematical modelling. However, under some systems, reversed observed, perhaps most notably syngnathid fishes male pregnancy. Unlike gradients, the causal basis of such has never been modelled mathematically. Here, we present sex-neutral model demonstrating how restrictions capacity carrying or incubating gametes and embryos (brooding) interact anisogamy, generating both single model. results clearly demonstrate anisogamy tends cause but diminishing brooding pregnancy nesting causes gradual reversal fully ‘reversed’ gradients.
Language: Английский
Citations
1
Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(2002)
Published: July 12, 2023
Bateman's principles heavily influence the understanding of human reproductive behaviour. Yet, few rigorous studies on in contemporary industrialized populations exist. Most use small samples, exclude non-marital unions, and disregard recent insights within-population heterogeneity mating strategies. We assess success using population-wide Finnish register data marital cohabitations fertility. examine variability across social strata Bateman analyse mate count, cumulated duration with a mate, association success. Results support first second principles. Regarding third principle, number mates is more positively associated for men than women, but this driven by ever having mate. Having one average lower However, lowest income quartile, predicts Longer union higher success, so men. note that sex differences relationship between differ strata, argue may be an important component alongside count.
Language: Английский
Citations
3
Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 196, P. 115675 - 115675
Published: Oct. 19, 2023
Understanding the effects of pollution on reproductive performance and sexual selection is crucial for conservation biodiversity in an increasingly polluted world. The present study focused effect environmental heavy metal sexually selected traits, including morphological characteristics acoustic parameters, as well mate choice Strauchbufo raddei, anuran species widely distributed Northern China. results showed that male courtship signals, forelimb length, force, advertisement calls, have evolved under pressure young S. raddei. In addition, breeding age was lower areas, younger individuals had more mating opportunities. However, males with heightened did not show expected higher individual quality. current suggests exposure to can induce stress males, altering further disrupting choice.
Language: Английский
Citations
3
Behavioral Ecology and Sociobiology, Journal Year: 2023, Volume and Issue: 77(12)
Published: Dec. 1, 2023
Language: Английский
Citations
3