Behavioural impacts of trematodes on their snail host: Species‐specific effects or generalised response?
Behavioural impacts of trematodes on their snail host: Species‐specific effects or generalised response?
复制标题
吸虫对其蜗牛宿主的行为影响：物种特异性影响还是普遍反应？
作者：
Rosenkranz;Poulin;Selbach
寄生虫引起的行为变化极为常见，但其最终原因往往难以确定：它们可能代表寄生虫的适应性操纵、宿主的适应性反应或感染的非适应性副作用。比较不同寄生虫对同一宿主物种的影响提供了测试宿主行为的物种特异性变化的机会，这些变化不太可能是一般的副作用。在这里，我们测试了三种吸虫物种（Apatemonsp. I、Plagiorchioid sp. I 和 Maritrema poulini）对其共同中间宿主淡水蜗牛 Potamopyrgus antipodarum 的运动、微生境选择和捕食者线索的反应的影响。所有三种吸虫都会导致宿主被阉割，因此可以排除宿主对感染的适应性反应。在实验室试验中，蜗牛感染了Apatemonsp。在实验期间，我移动的总距离比未感染的对照蜗牛短。然而，所有三种吸虫物种都类似地抵消了未感染蜗牛对光照区域的吸引力，并且没有一种吸虫影响其宿主移动的时间或其对捕食者线索的反应。总体而言，几乎没有证据表明同一蜗牛宿主中的三种不同吸虫物种对宿主行为产生物种特异性影响。涉及一种吸虫种类和一种特定行为测量的诱导行为变化的单一差异不足以否定这样的假设：对蜗牛宿主的行为影响是吸虫感染的一般性和非适应性副产品。
Behavioural changes induced by parasites are extremely common, but their ultimate causes are often difficult to determine: they may represent adaptive manipulation by the parasite, adaptive responses by the host, or non‐adaptive side‐effects of infection. Contrasting the impacts of different parasites on the same host species offers an opportunity to test for species‐specific changes in host behaviour, which are less likely to be general side‐effects. Here, we tested the impacts of three trematode species (Apatemonsp. I, Plagiorchioid sp. I, andMaritrema poulini) on movement, microhabitat choice and responses to predator cues of their common intermediate host, the freshwater snailPotamopyrgus antipodarum. All three trematodes cause the castration of their host, and thus adaptive host responses to infection can be ruled out. In laboratory trials, snails infected withApatemonsp. I moved a shorter total distance during the experimental period than uninfected control snails. However, all three trematode species similarly neutralised the attraction to lighted areas shown by uninfected snails, and none of the trematodes affected the time spent moving by their host or its responses to predator cues. Overall, there was little evidence for species‐specific effects on host behaviour by the three different trematode species in the same snail host. The single difference in induced behavioural change, involving one trematode species and one specific behavioural measure, is insufficient to reject the hypothesis that the behavioural impacts on the snail host are general and non‐adaptive by‐products of trematode infection.
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影响因子：
2.4
作者：
Levri, EP
通讯作者：
Levri, EP
影响因子：
2.1
作者：
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通讯作者：
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影响因子：
1.4
作者：
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通讯作者：
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DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
R. Hechinger
通讯作者：
R. Hechinger
DOI：
10.1017/s0025315405012002
发表时间：
2005-08-01
影响因子：
1.2
作者：
Hay, KB;Fredensborg, BL;Poulin, R
通讯作者：
Poulin, R