Sex Differences in Mate Choice in a Monogamous Biparental Fish, the Midas Cichlid (Cichlasoma citrinellum)
Sex Differences in Mate Choice in a Monogamous Biparental Fish, the Midas Cichlid (Cichlasoma citrinellum)
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一夫一妻制双亲鱼——迈达斯丽鱼科鱼（Cichlasoma citrinellum）的择偶性别差异
DOI：
10.1111/j.1439-0310.1991.tb00250.x
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发表时间：
2010
期刊：
影响因子：
1.7
通讯作者：
G. Barlow
中科院分区：
文献类型：
--
作者：
William Rogers;G. Barlow
迈达斯慈鲷实行一夫一妻制，在野外需要双亲照顾才能抚养幼崽独立。我们预测雄性和雌性迈达斯丽鱼会选择与良好的亲代照顾能力相关的品质的配偶。成年人对未来伴侣的选择在以下三种品质之一上系统性地变化：体型、攻击性和繁殖经验。受试者通过对各种替代方案表现出的求爱程度来表达其选择（如果有的话）。雌性选择体型较大的雄性而不是体型较小的雄性，选择攻击性强的雄性而不是不具有攻击性的雄性，选择经验丰富的雄性而不是缺乏经验的雄性。体型大、攻击性强、经验丰富的雄性应该会提高幼崽存活的可能性。相比之下，男性在女性中对这三个变量的任何水平都没有表现出一致的选择。雄性缺乏一致的选择，加上早期发现雌性亲本投入更大，表明慈鲷的繁殖系统是由雌性选择驱动的，而雄性可能没有选择性的选择，或者可能无法从选择中受益。
The Midas cichlid is strongly monogamous and requires biparental care in the wild to raise any young to independence. We predicted that male and female Midas cichlids would select mates with qualities correlating with good parental caretaking ability. Adults were given choices of prospective mates varying systematically in one of three qualities: size, aggressiveness and reproductive experience. The subject expressed its choice, if any, by the amount of courtship shown to the various alternatives. Females selected large males over small ones, aggressive males over unaggressive ones and experienced males over inexperienced ones. Large, aggressive and experienced males should enhance the likelihood of brood survival. In contrast, males showed no consistent choice among females of any level of the three variables. This lack of consistent choice by the males, coupled with earlier findings of greater overall parental investment by females, indicates that the breeding system in the Midas cichlid is driven by female choice and that males either may not have the option of being selective or may not benefit from choosing.