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
• 来源期刊: 动物学报（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Special Column: Sexual Selection and Environmental Change
• 页码范围: 337-340
• 页数: 4页
• 语种: 英文
• DOI: 10.1093/cz/zoab007

摘要

Salmonids like whitefish(Coregonus spp.)are often propagated in supportive breeding.Spawners are caught from their spawning loca-tions,their gametes mixed,and the resulting offspring reared in a protected environment before being released into the wild.This pro-cedure can affect sexual selection,for example,by enhancing the im-portance 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 vari-ance and the mean genetic quality of next generations.