The logic of conventional and reversed Bateman gradients DOI Creative Commons
Jussi Lehtonen, George A. Parker, Camilla M. Whittington

et al.

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

The logic of conventional and reversed Bateman gradients DOI Creative Commons
Jussi Lehtonen, George A. Parker, Camilla M. Whittington

et al.

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