Male sexual signaling and expected effects of hatchery-induced sperm competition vary with water depth at which whitefish are caught  

作　　者：Giulia Perroud David Nusbaumer Christian de Guttry Claus Wedekind 

机构地区：[1]Department of Ecology and Evolution,University of Lausanne,1015 Lausanne,Switzerland

出　　处：《Current Zoology》2021年第3期337-340,共4页动物学报（英文版）

基　　金：This work was supported by the Swiss National Science Foundation[31003A.182265].

摘　　要：Salmonids like whitefish(Coregonus spp.)are often propagated in supportive breeding.Spawners are caught from their spawning locations,their gametes mixed,and the resulting offspring reared in a protected environment before being released into the wild.This procedure can affect sexual selection,for example,by enhancing the importance of sperm competition or by reducing the relevance of sexual signals.While it is often unclear how sperm competitiveness is affected by a male's overall genetic quality,there is accumulating evidence that sexual signals reveal good genes and that mate choice based on such signals can increase offspring viability(Auld et al.2019).Therefore,supportive breeding may affect the genetic variance and the mean genetic quality of next generations.

关 键 词：sexual signaling sperm competition WHITEFISH 

分 类 号：Q95[生物学—动物学]