Mate Quality Affects Reproductive Effort in a Paternally Investing Species
Mate Quality Affects Reproductive Effort in a Paternally Investing Species
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DOI：
10.1086/285972
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发表时间：
1996-12
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影响因子：
--
通讯作者：
N. Wedell
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文献类型：
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作者：
N. Wedell
许多物种的雌性在交配后通过增加与首选雄性交配后投入生殖的资源量来进行交配后的择偶。这种现象被称为昆虫中的隐性雌性选择和鸟类中的差异分配。在这项研究中，我调查的可能性，男性和女性不同的生殖努力取决于他们的伴侣的质量。雌性的逗号蝴蝶，Polygonia c-album（Nymphalidae）在一系列宿主植物上产卵，包括刺荨麻（Urtica dioica）和灰柳（Salix caprea）。以前的研究表明，女性饲养的蜡黄比女性饲养的刺荨麻更肥沃，而男性饲养的刺荨麻产生的精囊蛋白质含量高于蜡黄饲养的男性。放射性标记实验表明，雌性利用雄性捐赠的卵子生产。当雌性与提供更多捐赠的雄性交配时，它们会按比例使用更多的这些蛋白质来产卵，但也会增加自己的繁殖努力。女性一生的生殖输出没有发现不同的幼虫饮食的配偶，但女性交配的高品质的男性比女性交配的男性为他们提供更小的捐赠，这表明女性可以使用男性的营养物质也为体细胞的维护显着更长的时间。这些结果进行了讨论，女性的神秘选择和差异分配假说。
Females of many species exercise postcopulatory mate choice by increasing the amount of resources put into reproduction after mating with a preferred male. This phenomenon is termed cryptic female choice in insects and differential allocation in birds. In this study I investigate the possibility that males and females vary their reproductive effort depending on the quality of their mate. Females of the comma butterfly, Polygonia c-album (Nymphalidae) lay their eggs on a range of host plants, including stinging nettle (Urtica dioica) and sallow (Salix caprea). Previous studies have shown that females reared on sallow are more fecund than females reared on stinging nettle, whereas males reared on stinging nettle produce spermatophores with higher protein content than sallow-reared males. Radioactive label experiments showed that females use male donations for egg production. When females mated males that provided larger donations, they used proportionally more of these proteins for egg production but also increased their own reproductive effort. Female lifetime reproductive output was not found to differ with respect to the larval diet of their mate, but females mated to high-quality males lived significantly longer than females mated to males providing them with smaller donations, which suggests that females can use male nutrients also for somatic maintenance. These results are discussed in relation to female cryptic choice and differential allocation hypotheses.