Parasitism does not reduce thermal limits in the intermediate host of a bopyrid isopod

Parasitism does not reduce thermal limits in the intermediate host of a bopyrid isopod
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寄生不会降低吡啶等足类动物中间宿主的热极限

DOI:
10.1016/j.jtherbio.2023.103712
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发表时间:
2023
影响因子:
2.7
通讯作者:
Dam, Hans G.
Dam, Hans G.
中科院分区:
生物学3区
文献类型:
--
作者:
Sasaki, Matthew;Woods, Charles;Dam, Hans G.

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寄生对群落动态有很强的影响。鉴于寄生虫对宿主健康的有害影响,感染或侵染可能会降低温度上限,增加宿主物种对未来气候变化的脆弱性。桡足类是水生食物网和生态地球化学循环的组成部分。它们也是Bopyridae家族中寄生等足类动物生命周期的中间宿主。由于桡足类和等足类寄生虫在水生群落中发挥着重要作用,因此了解寄生虫和宿主之间的相互作用如何影响温度限制以更好地预测群落动态在气候变暖中如何变化是很重要的。在这里,我们研究的影响,由幼虫的bopyrid等足类动物的世界性桡足类Acartia tonsato测试的假设,即侵染降低热极限。为了帮助这项工作,我们开发了一个负担得起的,高度便携式系统测量临界热最大值的小外温。我们还使用荟萃分析来总结寄生在更广泛的分类群中对临界热最大值的影响,以帮助我们的研究结果。与我们的假设和以前的研究结果相反,我们观察到寄生在A中没有降低热极限。汤萨这些结果表明,宿主和寄生虫的生活史可能相互作用,以确定寄生虫感染如何影响环境的敏感性。
Parasitism has strong effects on community dynamics. Given the detrimental effects parasites have on host health, infection or infestation might be expected to reduce upper thermal limits, increasing the vulnerability of host species to future climate change. Copepods are integral components of aquatic food webs and biogeochemical cycles. They also serve as intermediate hosts in the life cycle of parasitic isopods in the family Bopyridae. As both copepods and isopod parasites play important roles in aquatic communities, it is important to understand how the interaction between parasite and host affects thermal limits in order to better predict how community dynamics may change in a warming climate. Here we examined the effect of infestation by larvae of a bopyrid isopod on the cosmopolitan copepodAcartia tonsato test the hypothesis that infestation reduces thermal limits. To aid with this work, we developed an affordable, highly portable system for measuring critical thermal maxima of small ectotherms. We also used meta-analysis to summarize the effects of parasitism on critical thermal maxima in a wider range of taxa to help contextualize our findings. Contrary to both our hypothesis and the results of previous studies, we observed no reduction of thermal limits by parasitism inA. tonsa. These results suggest that life history of the host and parasite may interact to determine how parasite infestation affects environmental sensitivity.
外皮等足类寄生虫Probopyrus pandalicola的幼虫代谢以及P. pandalicola对其桡足类中间宿主Acaria tonsa的代谢影响。
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