Sex roles and sex ratios in animals

PM Kappeler, S Benhaiem, C Fichtel… - Biological …, 2023 - Wiley Online Library
In species with separate sexes, females and males often differ in their morphology,
physiology and behaviour. Such sex‐specific traits are functionally linked to variation in …

Sex Role Reversal and High Frequency of Social Polyandry in the Pheasant-Tailed Jacana (Hydrophasianus chirurgus)

N Fresneau, YF Lee, WC Lee, A Kosztolányi… - Frontiers in Ecology …, 2021 - frontiersin.org
In a few species, males invest more than females in parental care while the females invest in
mating competition and producing multiple broods for several mates. Species in the family …

[HTML][HTML] A novel function of egg burial: burying material prevents eggs rolling out of wind-swayed nests

J Zheng, E Zuidema, Z Zhang, M Guo, T Székely… - Animal Behaviour, 2022 - Elsevier
Egg burial behaviour, that is, when parents bury the eggs with a layer of nest material during
the egg-laying stage, has been described in various egg-laying animals. Several functions …

May brood desertion be ruled by partner parenting capability in a polygamous songbird? An experimental study

J Zheng, H Wang, J Jiang, MA Versteegh… - Ecology and …, 2024 - Wiley Online Library
Parents confront multiple aspects of offspring demands and need to coordinate different
parental care tasks. Biparental care is considered to evolve under circumstances where one …

[HTML][HTML] Implications of adult sex ratios for natal dispersal in a cooperative breeder

FJD Speelman, MJ Borger, M Hammers… - Animal Behaviour, 2024 - Elsevier
Highlights•Natal dispersal is associated with ASR in a facultative cooperative breeder.•Male
but not female yearlings disperse in response to population ASR and density.•Population …

Effects of season length and uniparental care efficacy on the evolution of parental care

J Zheng, J Komdeur, FJ Weissing - Journal of Animal Ecology, 2023 - Wiley Online Library
Parental care patterns differ enormously among and even within species. This is exemplified
by Chinese penduline tits Remiz consobrinus, where biparental care, female‐only care …

Evolutionary ecology of the variable breeding system of Chinese penduline tits

J Zheng - 2022 - research.rug.nl
Although biparental care is the most commonly observed pattern in bird species, the
evolutionary causations of variable parental care patterns demand more scientific attention. I …

Detection of reproductive trade-offs is influenced by resource availability and maintenance: an experimental study in the burying beetle (Nicrophorus vespilloides)

W Wang, L Ma, MA Versteegh, H Wu… - Behavioral Ecology and …, 2022 - Springer
Life-history theory predicts trade-offs between investment in current versus future
reproduction. However, many studies find no or even positive correlations among these …