Effects of maternal age on reproductive traits and fitness components of the offspring in the bruchid beetle, Callosobruchus chinensis (Coleoptera: Bruchidae)
Effects of maternal age on reproductive traits and fitness components of the offspring in the bruchid beetle, Callosobruchus chinensis (Coleoptera: Bruchidae)
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母体年龄对豆象甲虫 Callosobchus chinensis（鞘翅目：豆象科）后代生殖性状和健康成分的影响
DOI：
10.1046/j.1365-3032.2002.00294.x
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发表时间：
2002
影响因子：
1.5
通讯作者：
T. Miyatake
中科院分区：
文献类型：
--
作者：
Shin‐ichi Yanagi;T. Miyatake
在许多昆虫物种中，卵的大小和数量随着母体年龄的增加而减少。因此，必须考虑卵子的大小和数量，才能知道随着母亲年龄的确切生殖成本。以豆象Callosobruchus chinensis为研究对象，对资源耗竭假说进行了检验。这一假说解释了为什么卵子的大小随着母体年龄的增长而减小，其基础是雌性生殖能力的下降。随着母体年龄的增长，繁殖努力（=卵大小×卵数）和后代的适应性成分减少。 还研究了女性营养状况对母亲年龄与有和无食物和水的女性生殖努力之间关系的影响。结果表明，卵的大小和数量随母体年龄的增加而减少，这可以用C.中国。
In many insect species, the size and number of eggs decrease with maternal age. Thus, both the size and number of eggs must be considered to know the exact cost of reproduction with maternal age. The resource depletion hypothesis was examined in the bruchid beetle Callosobruchus chinensis. The hypothesis explains why the egg size decreases with maternal age based on the decline of the female's reproductive capacity. A decrease was found in reproductive effort (= egg size × the number of eggs) and the fitness component of offspring with maternal age. The effects of the female's nutritional status on the relationship between maternal age and the reproductive effort of females with and without food and water were also examined. The results indicate that the decrease in size and number of eggs with maternal age can be explained by the resource depletion hypothesis in C. chinensis.
影响因子：
2.7
作者：
FOX, CW
通讯作者：
FOX, CW