Female condition-dependent allocation of nuptial gifts by males in the moth Ostrinia scapulalis.
Female condition-dependent allocation of nuptial gifts by males in the moth Ostrinia scapulalis.
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肩胛玉米螟中雄性对雌性视情况分配彩礼。
DOI：
10.1093/aesa/sav010
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发表时间：
2015
影响因子：
2.3
通讯作者：
and Y. Ishikawa
中科院分区：
文献类型：
--
作者：
Win;A.T.;W. Kojima;and Y. Ishikawa
许多昆虫的雄性在交配时将一个精囊，即含有精子的蛋白质壳转移给雌性，这也可能是一种结婚礼物。如果精荚的生产成本很高，而雌性的质量差异很大，雄性可能会根据配偶的质量战略性地分配他们的投资，以最大限度地提高自己的生殖成功。我们研究了转移到不同年龄和不同体型的雌性以及缺水和水分充足的雌性身上的受精器的大小和蛋白质含量。雄性将体积较小或蛋白质含量较少的精囊转移给年长的雌性、较小的雌性和缺水的雌性。这些结果表明，萨托。肩胛型雄性根据配偶的条件来操纵他们的生殖投资。我们还证明，与年轻男性相比，年长的男性在更大程度上改变了他们的资源分配，以应对女性的状况。因此，该物种雄性的资源分配既受雌性条件的影响，也受雄性年龄的影响。
The males of many insect species transfer a spermatophore, i.e., a proteinaceous capsule containing sperm, to females during copulation, and this may also function as a nuptial gift. If production of the spermatophore is costly and variations in the quality of females are large, males may strategically allocate their investment based on the quality of the mate to maximize their own reproductive success. We examined the size and protein content of spermatophores transferred to females of different ages and body sizes, and also to water-deprived and water-replete females in the mothOstrinia scapulalis(Walker). Males transferred a spermatophore of a smaller size or with less protein to older females, smaller females, and water-deprived females. These results indicated thatO. scapulalismales manipulated their reproductive investment based on the conditions of the mate. We also demonstrated that older males varied their resource allocation to a greater extent in response to female conditions than younger males. Thus, resource allocation by the males of this species is modulated by both female conditions and the age of the males.