营养摄取决定一种圆网蜘蛛斑络新妇成熟后蜕皮现象

While molting occurs in the development of many animals, especially arthropods, post-maturity molting (PMM, organisms continue to molt after sexual maturity) has received little attention. The mechanism of molting has been studied intensively; however, the mechanism of PMM remains unknown although it is suggested to be crucial for the development of body size. In this study, we investigated factors that potentially induce PMM in the golden orb-web spider Nephila pilipes, which has the greatest degree of sexual dimorphism among terrestrial animals. We manipulated the mating history and the nutrient consumption of the females to examine whether they affect PMM. The results showed that female spiders under low nutrition were more likely to molt as adults, and mating had no significant influence on the occurrence of PMM. Moreover, spiders that underwent PMM lived longer than those that did not and their body sizes were significantly increased. Therefore, we concluded that nutritional condition rather than mating history affect PMM.

虽然在许多动物，特别是节肢动物的发育过程中都会发生蜕皮，但成熟后蜕皮(PMM，生物在性成熟后继续蜕皮)几乎没有受到关注。蜕皮的机理已经被深入研究，但是，尽管PMM被认为对体型的发育至关重要，但是它的机制仍然不清楚。在这项研究中，我们调查了在陆地动物中具有最大程度性别二型性（雄蛛大小远远小于雌蛛）的金色圆网蜘蛛斑络新妇Nephila pilipes中潜在诱导PMM的因素。我们操纵雌性的交配史和营养消耗来检查它们是否影响PMM。结果表明，低营养条件下的雌性蜘蛛更容易成熟后蜕皮，交配对PMM的发生没有显著影响。此外，接受PMM的蜘蛛比没有接受PMM的蜘蛛寿命更长，它们的身体尺寸也明显增加。因此，我们得出结论，营养状况而不是交配史影响PMM

Cheng, R. C., et al. (2017). "Nutrient intake determines post-maturity molting in the golden orb-web spider Nephila pilipes (Araneae: Araneidae)." J Exp Biol 220(Pt 12): 2260-2264.

参考文献格式是endnote Annotated 格式

https://spiderid.com/picture/12538/  斑络新妇Nephila pilipes 图片来源于spiderid，蜘蛛采集地中国台湾台北，中国大陆蜘蛛的网站只有百度贴吧，目前无综合网站。所以图片来源往往是国外网站，有兴趣的同仁可考虑创第一个以蜘蛛为主题的综合网站！