期刊
ANIMAL BEHAVIOUR
卷 75, 期 -, 页码 1431-1439出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.anbehav.2007.09.017
关键词
asymmetrical divergence; Calopteryx splendens; Calopteryx virgo; F-1 hybrid; hybrid index; mitochondrial DNA; RAPD; reinforcement; reproductive isolation; sympatry; 16S
Females are often considered responsible for hybridization between two species because usually they are the choosier sex and their cooperation is needed for successful copulation. However, males can also be responsible for hybridization, for example in species in which males are able to force copulation. We studied the pattern of hybridization in two congeneric damselfy species, Calopteryx splendens and Calopteryx virgo, and provide evidence that F-1 hybrids between the two damselfly species occur in the wild. According to mitochondrial DNA analysis, hybridization is reciprocal: five of seven hybrids were sired by C. splendens and two by C. virgo males. We conducted an experiment that revealed that males of both species have surprisingly poor premating reproductive isolation in that they accept heterospecific females, but C. splendens males were less discriminating against con- and heterospecific females than were C. virgo males. Moreover, our data on the number of hybrids sired by either species in the wild are congruent with the results of the discrimination experiment, supporting the conclusion that males may be responsible for the hybridization. Our results suggest that the males' role in hybridization studies should no longer be neglected. (C) 2007 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.
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