Predator‐specific changes in the morphology and swimming performance of larval Rana lessonae
Predator‐specific changes in the morphology and swimming performance of larval Rana lessonae
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林蛙幼虫形态和游泳性能的捕食者特异性变化
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
R. Damme
中科院分区：
文献类型：
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作者：
R. Wilson;P. Kraft;R. Damme
1.我们调查了幼蛙lessonae的形态反应的存在下，两个捕食者有很大的不同的猎物检测和捕获技术;幼虫蜻蜓（Aeshna cyanea）和南瓜太阳鱼（Lepomis gibossus）。2.我们还研究了任何捕食者引起的形态变化对他们的游泳能力的功能影响，通过评估性能在惊吓反应的初始阶段。3.我们发现了幼虫的形态反应。lessonae依赖于具体的捕食者存在。蝌蚪提出的存在下捕食同种蝌蚪的幼虫的总尾巴高度5.4%深，尾肌4.7%浅比在非捕食者环境中提出的蝌蚪，而与太阳鱼提出的蝌蚪拥有的尾巴2%浅，尾肌2.5%高于非捕食者暴露的蝌蚪。4.捕食者引起的形态变化也显着影响游泳性能。太阳鱼饲养的蝌蚪游泳速度分别比无捕食者组和无捕食者组高9.5%和14.6%。5.因此，这些替代捕食者变体的表达导致不同环境之间的性能的功能权衡。
1. We investigated the morphological responses of larval Rana lessonae to the presence of two predators with substantially different prey-detection and capture techniques; larval dragonflies (Aeshna cyanea) and the Pumpkinseed Sunfish (Lepomis gibossus). 2. We also examined the functional implications of any predator-induced morphological variation on their swimming ability by assessing performance during the initial stages of a startle response. 3. We found the morphological responses of larval R. lessonae were dependent on the specific predator present. Tadpoles raised in the presence of dragonfly larvae preying upon conspecific tadpoles developed total tail heights 5.4% deeper and tail muscles 4.7% shallower than tadpoles raised in a non-predator environment, while tadpoles raised with sunfish possessed tails 2% shallower and tail muscles 2.5% higher than non-predator-exposed tadpoles. 4. Predator-induced morphological variation also significantly influenced swimming performance. Tadpoles raised with sunfish possessed swimming speeds 9.5 and 14.6% higher than non- and dragonfly predator groups, respectively. 5. Thus, the expression of these alternative predator-morphs leads to a functional trade-off in performance between the different environments.
影响因子：
3
作者：
BROWN, MS;GOLDSTEIN, JL
通讯作者：
GOLDSTEIN, JL