Benefit to male sailfin mollies of mating with heterospecific females.

Benefit to male sailfin mollies of mating with heterospecific females.
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与异种雌性交配对雄性帆鳍锦鲤有利。

DOI:
10.1126/science.8278809
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发表时间:
1994
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Ryan,MJ
Ryan,MJ
中科院分区:
--
文献类型:
--
作者:
Schlupp,I;Marler,C;Ryan,MJ

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雌性雌核细胞是无性繁殖的,但依靠异种雄性的精子来启动胚胎发生。人们一直认为,雄性从这种交配中得不到任何好处;因此,自然选择应该倾向于避开它们的雄性。这里的研究表明,在鱼类的无性-有性复合体中,雄性通过与雌性雌核细胞交配而获得利益。有性的雌性会增加它们对与雌性雌性交配的雄性的偏好。因此,雌性发生的物种可能会持续存在,因为选择倾向于雄性被性寄生。
Female gynogens reproduce clonally but rely on sperm from heterospecific males to initiate embryogenesis. It has been assumed that males gain no benefit from such matings; thus, selection should favor males that avoid them. Here it is shown that males gain a benefit by mating with female gynogens in an asexual-sexual complex of fish. The sexual females increase their preference for males whom they observe consorting with female gynogens. Thus, gynogenetic species might persist because selection favors males to be sexually parasitized.
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