Historical museum collections help detect parasite species jumps after tilapia introductions in the Congo Basin
Historical museum collections help detect parasite species jumps after tilapia introductions in the Congo Basin
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DOI：
10.1007/s10530-020-02288-4
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发表时间：
2020-06-03
影响因子：
2.9
通讯作者：
Vanhove, M. P. M.
中科院分区：
文献类型：
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作者：
Jorissen, M. W. P.;Huyse, T.;Vanhove, M. P. M.
这项研究强调了博物馆藏品在入侵生物学方面的价值。它重点关注刚果盆地引进的罗非鱼、Oreochromis niloticus 和 Coptodon rendalli 及其单殖纲（扁形动物）鳃寄生动物群。 O. niloticus 被引入整个刚果盆地，而 C.rendalli 则被引入下刚果，但原产于中刚果和上刚果。为了研究这些放养事件对本地寄生虫群落的影响，我们研究了寄生虫的共同引入和宿主转换。将引进后的材料与来自刚果盆地博物馆收藏的 5 种本地罗非鱼的引进前样品进行比较。已知的尼罗罗非鱼寄生虫中有 9 种是共同引入的，而一种 Cichlidogyrus rognoni 却失踪了，而且可能尚未建立。相比之下，没有发现任何寄生虫物种与 C.rendalli 共同引入下刚果。斯帕罗罗非鱼的寄生动物群与尼罗罗非鱼不属于同一物种。 Oreochromis mweruensis 与 O. niloticus 共有五个物种，但这些也在引入前的样本中发现，并且被认为是两个宿主的原生物种。我们报告了三种假定的宿主转换：刚果盆地下部的Cichlidogyrus sclerosus和Cichlidogyrus tilapiae到Coptodon tholloni，以及刚果上部的Gyrodactylus nyanzae到C.rendalli。
This study highlights the value of museum collections in invasion biology. It focuses on introduced tilapias, Oreochromis niloticus and Coptodon rendalli in the Congo Basin and their monogenean (Platyhelminthes) gill parasite fauna. O. niloticus was introduced throughout the Congo Basin while C. rendalli was introduced into the Lower Congo, but is native to the Middle and Upper Congo. In order to study the impact of these stocking events on the native parasite community we investigate the co-introduction and host switching of their parasites. Post-introduction material is compared with pre-introduction samples from museum collections of 5 native tilapias in the Congo Basin. Nine of the known parasites of O. niloticus were co-introduced, while one, Cichlidogyrus rognoni, is missing and possibly not established. In contrast, no parasite species were found co-introduced with C. rendalli into the Lower Congo. The parasite fauna of Tilapia sparrmanii shared no species with O. niloticus. Oreochromis mweruensis shared five species with O. niloticus, but these were also found on the pre-introduction samples, and are considered native to both hosts. We report three putative host switches: Cichlidogyrus sclerosus and Cichlidogyrus tilapiae to Coptodon tholloni in the Lower Congo Basin and Gyrodactylus nyanzae to C. rendalli in the Upper Congo.