Ontogenetic habitat shift and risk of cannibalism in the common chameleon (Chamaeleo chamaeleon)
Ontogenetic habitat shift and risk of cannibalism in the common chameleon (Chamaeleo chamaeleon)
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普通变色龙（Chamaeleo chamaeleon）的个体发生栖息地转变和同类相食的风险
DOI：
10.1007/s00265-005-0102-z
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发表时间：
2006
影响因子：
2.3
通讯作者：
E. Geffen
中科院分区：
文献类型：
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作者：
Tammy Keren;Amos Bouskila;E. Geffen
个体发生的栖息地的变化已被记录在许多鱼类和两栖动物和一些爬行动物。种内竞争与差异捕食，猎物的大小，社会相互作用，大小相关的热量需求，和运动的形态限制往往牵连在这种个体发育栖息地分离。在目前的研究中，我们结合实地观察与实验在自然竞技场，以测试各种假设的个体发育栖息地的转变，我们已经记录在常见的变色龙。幼虫（平均，1克）占据低草和成人（平均，35克）被发现在灌木丛和树木。这两个年龄组之间的栖息地使用重叠是最小的。我们的野外实验表明，青少年通过隐藏或逃跑来主动避免成年人的存在。成年人很容易攻击和消费青少年，无论他们自己的质量。这些结果表明，对青少年的同类相食的风险是一个重要的选择性力量背后的个体发育栖息地的转变，观察到在常见的变色龙，并可能是重要的其他物种。
Ontogenetic habitat shifts have been documented in numerous fish and amphibians and in some reptiles. Intraspecific competition together with differential predation, prey size, social interactions, size-related thermal requirements, and morphological constraints on movement are often implicated in this ontogenetic habitat separation. In the current study, we combined field observation with experiments in seminatural arenas to test various hypotheses regarding the ontogenetic habitat shift that we have documented in the common chameleon. Juveniles (mean, 1 g) occupied low grasses and the adults (mean, 35 g) were found on bushes and trees. Overlap in habitat use between these two age classes was minimal. Our field experiments showed that juveniles actively avoid the presence of adults by concealment or flight. Adults readily attacked and consumed juveniles, regardless of their own mass. These results suggest that the risk of cannibalism towards juveniles is an important selective force behind the ontogenetic habitat shift observed in the common chameleon and may be important in other species too.
DOI：
--
发表时间：
2001-11
期刊：
The Journal of experimental biology
影响因子：
--
作者：
Anthony Herrel;J. Meyers;Peter Aerts;K. Nishikawa
通讯作者：
Anthony Herrel;J. Meyers;Peter Aerts;K. Nishikawa
影响因子：
6
作者：
Al-Betar, Mohammed Azmi;Alyasseri, Zaid Abdi Alkareem;Abu Doush, Iyad
通讯作者：
Abu Doush, Iyad