When males live longer: Resource-driven territorial behavior drives sex-specific survival in snakes

Chi Ying Lee, David A. Pike, Hui Yun Tseng, Jung Ya Hsu, Shiang Lin Huang, Pei Jen L. Shaner, Chen Pan Liao, Andrea Manica, Wen San Huang*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

4 引文 斯高帕斯(Scopus)

摘要

Phylogenetic analysis has shown that males’ propensity to engage in aggressive encounters is associated with females having greater longevity. Here, we confirm the causal link between aggression and reduced longevity by looking at an egg-eating snake (Oligodon formosanus) in which females defend territories in the presence of sea turtle eggs. We monitored aggressiveness and survival at two sites: a control site with a stable supply of turtle eggs, and a second site where we collected data before and after a storm that eroded the beach on which turtles nested, thus leading to a loss of territoriality. We show that territoriality was the driver behind higher injury rates in females. Territorial females also had lower survival and decreased longevity compared with the nonterritorial males, but these differences disappeared when females were not territorial. Our study demonstrates how resource availability can influence the evolution of sex-specific patterns of survival across vertebrates.

原文英語
文章編號eaar5478
期刊Science Advances
5
發行號4
DOIs
出版狀態已發佈 - 2019 四月 24

ASJC Scopus subject areas

  • 多學科
  • 物理與天文學(雜項)

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