Size-dependent mate preference in the stalk-eyed fly Cyrtodiopsis dalmanni
Size-dependent mate preference in the stalk-eyed fly Cyrtodiopsis dalmanni
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DOI：
10.1006/anbe.2000.1613
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发表时间：
2001-03-01
期刊：
影响因子：
2.5
通讯作者：
Pomiankowski, A
中科院分区：
文献类型：
--
作者：
Hingle, A;Fowler, K;Pomiankowski, A
我们调查了大小依赖的交配选择的柄眼蝇Cyrtoniopsis dalmanni。在这个物种中，雌性更喜欢与眼睛更大的雄性交配。通过不同密度的幼虫饲养，对雌虫的眼距进行了实验性调控。交配偏好的女性与小，大的眼的选择室包含两个男性，不同的眼。这两种类型的女性区分男性之间的小差异的眼跨度（（X）在酒吧=1.45毫米），但都喜欢男性与更广泛的眼跨度时，男性之间的差异大（（X）在酒吧=3.17毫米）。当呈现中等差异的男性eyespan（（X）在酒吧=2.40毫米），大eyespan女性表现出显着更强的偏好比小eyespan女性的男性与更广泛的eyespan。大小依赖性的配偶选择在柄眼苍蝇可能是由小eyespan女性不太能够区分男性之间的差异。它也可能反映女性的状况，因为眼距与身体大小高度相关，这是发育状况的强有力预测因素。(C)2001年，动物行为研究协会。
We investigated size-dependent mate choice in the stalk-eyed fly Cyrtoniopsis dalmanni. In this species, females prefer to mate with males with larger eyespans. We experimentally manipulated female eyespan by rearing larvae at different densities. The mating preferences of females with small and large eyespans were compared in choice chambers containing two males that differed in eyespan. Neither type of female distinguished between males with small differences in eyespan ((X) over bar =1.45 mm), but both preferred the male with the wider eyespan when the difference between males was large ((X) over bar =3.17 mm). When presented with an intermediate difference in male eyespan ((X) over bar =2.40 mm), large-eyespan females showed a significantly stronger preference than small-eyespan females for the male with the wider eyespan. Size-dependent mate choice in stalk-eyed flies is probably caused by small-eyespan females being less able to discriminate differences between males. It may also reflect female condition, as eyespan is highly correlated with body size, which is a strong predictor of developmental conditions. (C) 2001 The Association for the Study of Animal Behaviour.