Persistent courtship reduces male and female longevity in captive tsetse flies Glossina morsitans morsitans Westwood (Diptera: Glossinidae)

被引:94
作者
CluttonBrock, T
Langley, P
机构
[1] Large Animal Research Group, Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, Downing Street
[2] School of Pure and Applied Biology, University of Wales, Cardiff, Cardiff CF1 3TL
关键词
copulation; Glossina morsitans morsitans; longevity reproductive costs; sex ratio; sexual harassment; tsetse flies; viviparity;
D O I
10.1093/beheco/8.4.392
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Where males can increase their mating success by harassing females until they accept copulation, harassing tactics can be expected to evolve to a point where they have costs to the longevity of both sexes. By experimentally manipulating the sex ratio in captive groups of tsetse flies Glossina morsitans morsitans, we demonstrated that the longevity of females declines where sex ratios are biased toward males, while the longevity of males declines where the sex ratio is biased toward females, Neither irradiation of males nor prevention of copulation by blocking or damaging the external male genitalia increased the longevity of females caged with them, suggesting that female longevity was reduced by the physical aspects of male harassment rather than by components of the ejaculate.
引用
收藏
页码:392 / 395
页数:4
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