期刊
BEHAVIORAL ECOLOGY
卷 32, 期 6, 页码 1276-1284出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/beheco/arab094
关键词
DNA microsatellites; lizards; mating behavior; paternity; reproduction-survival trade-off; reproductive success; vitamin D
资金
- Spanish Ministerio de Economia y Competitividad [MINECO CGL2014-53523-P]
The study found that male rock lizards with improved nutritional status adopted a more cautious and less costly mating strategy, resulting in siring fewer offspring, but potentially increasing longevity and expected total reproductive success in the future.
Investing in the current reproduction requires diverting energy resources from other metabolic functions, which may compromise future reproduction and lifespan. To solve this trade-off, an individual may consider its labile state to decide how much to invest in current reproduction. We tested experimentally whether the state quality of male rock lizards influences their reproductive strategies. To improve the nutritional status of males before the mating season, we captured and supplemented experimental males (N = 20) with dietary vitamin D-3 (an essential nutrient for lizards) and had a control group of males (N = 20). Then, we released all these males and females (N = 31) in a large semi-natural outdoor enclosure where lizards could interact and mate freely during the mating period. Activity levels of males did not vary between treatments, but supplemented males started fewer intrasexual agonistic interactions and made fewer mating advances to females. When the mating season ended, we incubated eggs laid by females to obtain the offspring and estimated the paternity of males using DNA microsatellites. Supplemented males sired fewer offspring than control males. These results suggest that vitamin D-3 supplemented males used a low risk/less costly mating strategy to protect their assets (i.e., vitamin D reserves), but that still resulted in some current reproductive success, while likely increasing longevity and the expected future total reproductive success.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据