Juvenile hormone favors sexually-selected traits but impairs fat reserves and abdomen mass in males and females
Juvenile hormone favors sexually-selected traits but impairs fat reserves and abdomen mass in males and females
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保幼激素有利于性选择特征，但会损害男性和女性的脂肪储备和腹部质量
DOI：
10.1007/s10682-010-9438-6
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发表时间：
2011
影响因子：
1.9
通讯作者：
A. Cordero‐Rivera
中科院分区：
文献类型：
--
作者：
J. Contreras‐Garduño;A. Córdoba‐Aguilar;Mónica Azpilicueta;A. Cordero‐Rivera
性选择研究中资源分配的生理机制很少被研究。一种候选者是激素，因为它们有利于将资源分配给生殖性状，但由于针对前性状的资源过度支出而损害了生存。我们研究了局部施用的保幼激素类似物（JHa，甲氧普林）是否参与了两种性别的痔疮蝽和处女座蝽的翅膀色素沉着（一种观赏性状）、脂肪储备和飞行肌肉质量的资源分配。我们还研究了这种实施对 C.haemorrhoidalis 和 C.splendens 成年雄性的腹部质量（产蛋量的间接测量）和田间生存可能产生的负面影响。我们发现，与对照组相比，接受 JHa 治疗的雄性和雌性翅膀色素沉着更高，脂肪储备减少，但肌肉质量没有变化。在雌性中，JHa 降低了腹部重量（繁殖力的指标），而在雄性中，只有芨芨草的存活率受到损害。这些结果支持这样的观点：JH 诱导资源分配给翅膀色素沉着，这是两性的性选择特征。因此，这项研究表明，JH 的作用可能是装饰品与男性和女性生理状况之间的机制联系。
The physiological mechanism underlying resource allocation in sexual selection studies has been little studied. One candidate is hormones as these favor resource allocation to reproductive traits but impair survival due to a resource over-expenditure directed to the former traits. We have investigated whether a juvenile hormone analog (JHa, methoprene) administrated topically is involved in the resource allocation to wing pigmentation (an ornamental trait), fat reserves and flight muscle mass in both sexes ofCalopteryx haemorrhoidalisandC.virgo. We also investigated the possible negative effect of such implementation on abdomen mass (an indirect measure of egg production) and field-based survival in adult males ofC.haemorrhoidalisandC.splendens. We found that males and females treated with JHa, against a control group, developed higher wing pigmentation and showed reduced fat reserves but had no change in muscle mass. In females, JHa decreased abdominal weight (an indicator of fecundity) and in males, survival was impaired only inC.splendens. These results support the idea that JH induces resource allocation to wing pigmentation, a sexually selected trait in both sexes. Thus, this study suggests that the action of JH could be a mechanistic link between ornaments and physiological condition in both males and females.
保幼激素是否参与沙漠蝗虫卵大小和后代特征的调节？
DOI：
--
发表时间：
2009
期刊：
Journal of Insect Physiology 55
影响因子：
--
作者：
Maeno;K.;Tanaka;S.
通讯作者：
S.