Heritability of body mass, a sexually selected trait, in an arctiid moth (Utetheisa ornatrix)
Heritability of body mass, a sexually selected trait, in an arctiid moth (Utetheisa ornatrix)
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DOI：
10.1073/pnas.96.16.9169
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发表时间：
1999-08-03
影响因子：
11.1
通讯作者：
Eisner, T
中科院分区：
文献类型：
--
作者：
Iyengar, VK;Eisner, T
在灰蛾中（鳞翅目：针叶蛾科），雌性偏爱与体型较大的雄性交配。体型大对两性都有利：体型大的雄性比体型小的雄性繁殖更多的后代，体型大的雌性比体型小的雌性繁殖能力强。在我的报告中，体重在两性中都是可遗传的，这表明通过选择体型较大的雄性，雌性可以为后代获得遗传上的好处。挑剔的雌性也会通过伴侣的精囊获得额外的营养和防御性生物碱，但这些礼物不会影响体重的遗传性。这些结果表明，通过行使配偶选择，雌性乌特泰萨获得了直接的表型和间接的遗传利益。
In the moth Utetheisa ornatrix (Lepidoptera: Arctiidae), females mate preferentially with larger males. Large body mass is advantageous to both sexes: large males sire more young than small males, and large females have higher fecundity than small females. Were me report that body mass is heritable in both sexes, indicating that by choosing larger males females obtain genetic benefits for their offspring. Choosy females also receive extra nutrient and defensive alkaloid by way of their partner's spermatophores, but these gifts do not affect the heritability of body mass. These results indicate that by exercising mate choice female Utetheisa receive both direct phenotypic and indirect genetic benefits.