The regulation of phenotypic plasticity of eyespots in the butterfly Bicyclus anynana
The regulation of phenotypic plasticity of eyespots in the butterfly Bicyclus anynana
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DOI：
10.1086/286213
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发表时间：
1998-12-01
影响因子：
2.9
通讯作者：
Koch, PB
中科院分区：
文献类型：
--
作者：
Brakefield, PM;Kesbeke, F;Koch, PB
我们使用一个异交的股票和选择线的Bi-cydus anynana结合测量和操作的蜕皮激素在早期pupelies检查成年蝴蝶的眼斑大小的调节。翅腹表面的眼斑对季节性干湿环境的适应表现出可塑性。在低温或高温下饲养的幼虫分别产生具有小或大腹侧眼斑的成虫。我们的实验研究蜕皮激素在介导这种表型可塑性的作用。较高滴度的蜕皮激素后不久化蛹产量较大的腹翅眼斑。腹侧眼点和背侧前翅上的眼点是分开的。后者没有表现出表型可塑性。它们对饲养温度的反应很小，它们的大小变化与蜕皮激素在早期蛹中的动态差异无关。一个可检验的假设激素受体的分布在发展的“组织者”或焦点的眼点，提出了如何解释一些眼点表达可塑性，而其他人没有。
We use an outcrossed stock and selected lines of Bi-cydus anynana in combination with measurements and manipulations of ecdysteroid hormones in early pupae to examine the regulation of eyespot size in adult butterflies. The eyespots on the ventral wing surfaces express adaptive phenotypic plasticity in response to the dry-wet seasonal environments of the butterflies. Larvae reared at low or high temperatures produce adults with small or large ventral eyespots, respectively. Our experiments examine the role of ecdysteroids in mediating this phenotypic plasticity. Higher titers of ecdysteroids shortly after pupation yield larger ventral wing eyespots. There is an uncoupling of the ventral eyespots and those on the dorsal forewing.;The latter do not show phenotypic plasticity. They show very little response to rearing temperature, and variation in their size is not associated with differences in the dynamics of ecdysteroids in early pupae. A testable hypothesis in terms of the distribution of hormone receptors in the developmental "organizers" or foci of the eyespots is proposed to account for how some eyespots express plasticity while others do not.