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首页> 外文期刊>Parasitology >Parasites of the shore crab Carcinus maenas (L.): implications for reproductive potential and invasion success.
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Parasites of the shore crab Carcinus maenas (L.): implications for reproductive potential and invasion success.

机译：岸蟹癌Maenas（L.）的寄生虫：对生殖潜力和入侵成功的影响。

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摘要

The European shore crab, Carcinus maenas, is one of the most successful marine invasive species. Its success has been in part attributed to the loss of parasites, rekindling an interest in host-parasite interactions and impacts on host fitness in this crab. In the present study, we investigated C. maenas populations from Europe, South Africa and Australia for parasites, and assessed their impact on the fitness of male crabs. For the shore crab, testes weight along with success in mating competition is traded off against other life-history traits. We therefore used this parameter as an indicator both for reproductive fitness and a possible resource trade-off in response to parasite infestation. In the native range, crabs infested with Sacculina carcini showed significantly lower testes weight than uninfected crabs. However, helminth parasites did not generally cause reduced testes weights. Crab populations from South Africa and Australia were either parasitized at very low prevalences, or were completely parasite free. However, no population level effect of this parasite release was reflected in testes weight. These findings do not support a severe fitness impact of helminth parasites on C. maenas, which questions the role of parasites on its population dynamics, both in the native area and for invasive success.
机译：欧洲岸蟹，Maenas，Maenas是最成功的海洋侵入性物种之一。其成功一直归因于寄生虫的丧失，重新征收对宿主寄生虫相互作用的兴趣，并对这一螃蟹的宿主健身的影响。在本研究中，我们研究了欧洲，南非和澳大利亚的C. Maenas人口，为寄生虫评估了对雄蟹的健身的影响。对于岸蟹来说，在交配竞争中的成功以及其他生命历史特征交易的睾丸重量。因此，我们使用此参数作为对寄生虫侵扰的生殖健康和可能的资源权衡的指标。在本地范围内，用骶骨内癌侵染的螃蟹表现出比未感染的螃蟹的睾丸重量显着降低。然而，Helminth Parasites通常不会导致减少的睾丸重量。来自南非和澳大利亚的螃蟹人群在非常低的患病症中寄生，或者完全寄生虫。然而，在睾丸重量中反映了这种寄生虫释放的人口水平效应。这些发现不支持Helminth Parasites对C. Maenas的严重健康影响，这对寄生虫在祖国和侵入性成功中询问了寄生虫对其人口动态的作用。

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