Reproductive tradeoffs of learning in a butterfly
Reproductive tradeoffs of learning in a butterfly
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蝴蝶学习的繁殖权衡
DOI：
10.1093/beheco/arq169
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发表时间：
2011
影响因子：
2.4
通讯作者：
D. Papaj
中科院分区：
文献类型：
--
作者：
Emilie C. Snell‐Rood;G. Davidowitz;D. Papaj
长期以来，人们一直假设学习的进化受到适应性权衡（例如繁殖延迟）的限制。我们探索了菜粉蝶（Pieris rapae）宿主学习与繁殖之间的关系。卷心菜白色雌性天生偏向于寻找常见的绿色寄主，但可以学会寻找稀有的红色寄主。先前的研究表明，寄主学习在全兄弟姐妹家庭之间存在差异，并且会在寄主搜索效率和大脑大小方面产生成本。在本研究中，我们表明，来自全同胞家庭的蝴蝶在红色宿主上的学习表现相对较好，在成年后往往拥有相对较少且发育不良的卵。我们还使用了甲氧普林（一种保幼激素模拟物）来促进雌性甘蓝的繁殖。我们发现，与对照相比，经过甲虫橡胶处理的蝴蝶寻找宿主的能力在经验上的提高较少，这为学习和繁殖时间之间的联系提供了独立的证据。最后，我们表明学习经历本身与终生生育力的进一步下降有关。这些结果支持了一系列理论和比较研究，强调了适应性权衡在学习和认知进化中的重要性。版权所有 2011，牛津大学出版社。
The evolution of learning has long been hypothesized to be limited by fitness trade-offs such as delays in reproduction. We explored the relationship between host learning and reproduction in the cabbage white butterfly, Pieris rapae. The cabbage white female is innately biased to search for common green hosts but can learn to search for rare red hosts. Host learning was shown previously to vary among full-sibling families and to incur costs in terms of host search efficiency and brain size. In the present study, we show that butterflies from full-sib families with relatively better learning performance on red hosts tend to emerge as adults with relatively fewer and less-developed eggs. We also used methoprene, a juvenile hormone mimic, to advance reproduction in female cabbage whites. We found that methoprene-treated butterflies improved host-finding ability less with experience, relative to controls, providing independent evidence of a link between learning and timing of reproduction. Finally, we show that the learning experience itself is associated with additional decreases in lifetime fecundity. These results support a range of theoretical and comparative studies highlighting the importance of fitness tradeoffs in the evolution of learning and cognition. Copyright 2011, Oxford University Press.
影响因子：
1.4
作者：
OLSON, DJ;KAMIL, AC;NIMS, PJ
通讯作者：
NIMS, PJ