Hairworm anti-predator strategy:: a study of causes and consequences
Hairworm anti-predator strategy:: a study of causes and consequences
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DOI：
10.1017/s0031182006000904
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发表时间：
2006-11-01
期刊：
影响因子：
2.4
通讯作者：
Biron, D. G.
中科院分区：
文献类型：
--
作者：
Ponton, F.;Lebarbenchon, C.;Biron, D. G.
寄生虫表现出的最迷人的反捕食反应之一是毛毛虫（线虫纲）。在鱼或青蛙摄入昆虫宿主后，寄生蠕虫能够主动离开其宿主和捕食者的肠道。作为一个模型的毛毛虫，Paragordius tricuspidatus，（寄生蟋蟀Nemobius sylvestris）和鱼类捕食者Micropterus salmoides，我们探索，与蛋白质组学工具，这种抗捕食者的反应的生理基础。通过研究寄生虫的蛋白质组，我们检测到27个蛋白质点的差异表达，这些蠕虫能够逃脱捕食者。候选蛋白质点的肽质量指纹表明逃逸蠕虫中存在强烈的肌肉活动，其功能与其独特的生物学平行。在第二步中，我们试图确定蠕虫为逃避捕食者而消耗的能量是否与其繁殖潜力相权衡。值得注意的是，与对照组相比，逃脱捕食者的蠕虫产生的后代数量并没有减少。
One of the most fascinating anti-predator responses displayed by parasites is that of hairworms (Nematomorpha). Following the ingestion of the insect host by fish or frogs, the parasitic worm is able to actively exit both its host and the gut of the predator. Using as a model the hairworm, Paragordius tricuspidatus, (parasitizing the cricket Nemobius sylvestris) and the fish predator Micropterus salmoides, we explored, with proteomics tools, the physiological basis of this anti-predator response. By examining the proteome of the parasitic worm, we detected a differential expression of 27 protein spots in those worms able to escape the predator. Peptide Mass Fingerprints of candidate protein spots suggest the existence of an intense muscular activity in escaping worms, which functions in parallel with their distinctive biology. In a second step, we attempted to determine whether the energy expended by worms to escape the predator is traded off against its reproductive potential. Remarkably, the number of offspring produced by worms having escaped a predator was not reduced compared with controls.