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首页> 美国卫生研究院文献>Proceedings of the Royal Society B: Biological Sciences >Male and female mate choice affects offspring quality in a sex-role-reversed pipefish.
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Male and female mate choice affects offspring quality in a sex-role-reversed pipefish.

机译：雄性和雌性伴侣的选择会影响性角色颠倒的pipe鱼的后代质量。

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摘要

Where both sexes invest substantially in offspring, both females and males should discriminate between potential partners when choosing mates. The degree of choosiness should relate to the costs of choice and to the potential benefits to be gained. We measured offspring quality from experimentally staged matings with preferred and non-preferred partners in a sex-role-reversed pipefish, Syngnathus typhle L. Here, a substantial male investment in offspring results in a lower potential reproductive rate in males than in females, and access to males limits female reproductive success rather than vice versa. Thus, males are choosier than females and females compete more intensely over mates than do males. Broods from preferred matings were superior at escaping predation, when either males or females were allowed to choose a partner. However, only 'choosing' females benefited in terms of faster-growing offspring. Our results have important implications for mate-choice research: here we show that even the more competitive and less choosy sex may contribute significantly to sexual selection through mate choice.
机译：在两性都大量投资后代的情况下，雌性和雄性在选择配偶时都应在潜在配偶之间进行区分。选择的程度应与选择的成本以及可能获得的利益有关。我们在性角色颠倒的pipe鱼Syngnathus typhle L中，通过实验性分阶段与首选和非首选伴侣进行交配来测量后代质量。在此，雄性对后代的大量投资导致雄性的潜在繁殖率低于雌性，并且与男性的接触限制了女性的生殖成功，反之亦然。因此，男性比女性更挑剔，女性比男性更激烈地竞争伴侣。当允许雄性或雌性选择配偶时，首选交配的亲代在逃避捕食时具有优势。但是，只有“选拔”的雌性才受益于后代生长更快。我们的研究结果对伴侣选择研究具有重要意义：在这里，我们表明，即使竞争激烈且选择较少的性爱，也可能通过伴侣选择对性爱选择产生重大影响。

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