Male responses to sperm competition risk associated with increased macronutrient intake and reduced lifespan

Biology Letters, Journal Year: 2023, Volume and Issue: 19(10)

Published: Oct. 1, 2023

Increased expenditure on the ejaculate is a taxonomically widespread male response to sperm competition. assumed come at cost future reproduction, otherwise males should always invest maximally. However, life-history costs of strategic ejaculation are not well documented. Macronutrient intake known affect trade-off between reproduction and lifespan. Intakes protein carbohydrate that maximize often differ from those Here, we asked whether by crickets, Teleogryllus oceanicus , mediated macronutrient intake, it comes reduced Males were exposed rival song throughout their lifespan or held in silent non-competitive environment. had higher both carbohydrate, they reached adulthood sooner, produced ejaculates quality, died sooner than living Our findings provide rare example mechanisms associated with ejaculation.

Language: Английский

Diet choice is insensitive to mating in male fruit flies

Animal Behaviour, Journal Year: 2024, Volume and Issue: 214, P. 73 - 86

Published: June 27, 2024

Language: Английский