Selective predation on chemically defended chrysomelid larvae
Selective predation on chemically defended chrysomelid larvae
复制标题
对化学防御的叶幼虫的选择性捕食
DOI：
10.1007/bf00987355
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发表时间：
1984
影响因子：
2.3
通讯作者：
J. Grégoire
中科院分区：
文献类型：
--
作者：
J. Pasteels;J. Grégoire
实验室实验表明，雌性叶蜂捕食以前遇到过的昆虫，而不是未知的昆虫。这已被观察到时，比较两个自然猎物的叶蜂，幼虫ofPhratora vitellinae和那些ofPlagiodera versicolora。这两个物种分泌大量的防御分泌物，第一水杨醛，后者的环戊烷单萜的混合物。捕食者在遇到一个以前有过分泌物经验的物种时，似乎不那么不情愿。因此，可能存在有利于稀有分泌物的选择压力，这与同域昆虫中众所周知的防御化合物的多样性是一致的。
Laboratory experiments showed that femaleTenthredo olivaceaprefer to prey upon insects of a previously encountered species, instead of upon unknown ones. This has been observed when comparing two natural prey of the sawfly, the larvae ofPhratora vitellinaeand those ofPlagiodera versicolora. The two species secrete copious amounts of defensive secretion, the first salicylaldehyde, and the latter a mixture of cyclopentanic monoterpenes. The predator appears less reluctant when encountering a species whose secretion has been previously experienced. A selective pressure might thus exist favoring rare secretions, which is consistant with the well-known diversity of defensive compounds among sympatric insects.