Karlsson Bengt
Department of Zoology, University of Stockholm, S-106 91, Stockholm, Sweden.
Evolution. 1995 Oct;49(5):955-961. doi: 10.1111/j.1558-5646.1995.tb02330.x.
A cross-taxonomic comparison of resources allocated to reproductive reserves at adult eclosion reveals that females belonging to polyandrous species receive more ejaculate material and allocate proportionally less of their total reserves to potential reproduction compared to females belonging to monandrous species. These results suggest that adult females of polyandrous species have a higher expected nutrient income and are consistent with the idea that females can benefit from male nutrient donations transferred during mating. Males show the opposite pattern: males of polyandrous species allocate proportionally more to reproduction. This is expected since males in polyandrous species have both proportionally heavier ejaculates and have a higher ejaculative production capacity than do males in monandrous species. Interestingly, adults of the genus Heliconius which can obtain nutrients crucial to reproduction by pollen feeding do not seem to follow these patterns as strong as only nectar-feeding butterflies. Instead, the association between degree of polyandry and resources allocated to reproduction is relaxed.
对羽化时分配给生殖储备的资源进行的跨分类比较表明，与单配偶制物种的雌性相比，多配偶制物种的雌性获得更多的射精物质，并且将其总储备中相对较少的部分分配给潜在繁殖。这些结果表明，多配偶制物种的成年雌性具有更高的预期营养收入，这与雌性可以从交配过程中转移的雄性营养捐赠中受益的观点一致。雄性表现出相反的模式：多配偶制物种的雄性在繁殖方面的分配比例更高。这是可以预料的，因为多配偶制物种中的雄性射精比例更大，并且射精生产能力比单配偶制物种中的雄性更高。有趣的是，通过吸食花粉可以获得对繁殖至关重要的营养的光明女神闪蝶属成虫，似乎不像只吸食花蜜的蝴蝶那样严格遵循这些模式。相反，多配偶程度与分配给繁殖的资源之间的关联较为松散。
