Effects of female and male size on female mating and remating decisions in a bean beetle
Effects of female and male size on female mating and remating decisions in a bean beetle
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DOI：
10.1007/s10164-012-0331-3
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发表时间：
2012-09-01
影响因子：
0.9
通讯作者：
Miyatake, Takahisa
中科院分区：
文献类型：
--
作者：
Harano, Tomohiro;Sato, Noriaki;Miyatake, Takahisa
个体在择偶中选择的性别和个体的体型大小可能会影响雌性的连续交配。研究了赤豆天牛（Callosobruchus chinensis）雌性个体及其配偶体大小对首次交配行为的影响，以及雌性个体及其先前和潜在配偶体大小对雌性再交配行为的影响。大型和小型的成人来自幼虫饲养在低和高密度的条件下，在一个豆，分别。大的女性的第一次交配的速度不受求爱男性的大小，而小的女性开始交配时，更迅速地追求小的男性。大的女性的再交配概率不受第一个男性的大小，而小的女性，交配第一次与较小的男性更容易再交配。这些数据表明，交配前和交配后的女性对男性大小的选择取决于女性的大小，小的女性可能更愿意与较小的男性交配，但更喜欢较大的男性交配后繁殖后代。对这种偏好的一个可能的解释是，小的雌性可能会在与大的雄性交配时遭受更大的伤害。
The body sizes of individuals of the choosing and chosen sexes in a mate choice may affect sequential mating of females. We examined the effects of the body sizes of females and their mates on attributes of female first mating, and the effects of body sizes of females and their previous and potential future mates on female remating in the adzuki bean beetle, Callosobruchus chinensis. Large- and small-sized adults were derived from larvae reared under conditions of low and high density in a bean, respectively. The speed of first mating of large females was not affected by the size of courting males, whereas small females initiated mating more rapidly when courted by small males. The remating probability of large females was not affected by first male size, whereas small females that mated first with smaller males were more likely to remate. These data suggest that pre- and post-copulatory female choices for male size depend on the female's size, and the small females might be more willing to copulate with smaller males but prefer larger males to sire their offspring after copulation. A possible explanation for this preference is that small females may suffer greater harm from copulating with larger males.