Phylogenetics and host‐specificity of the mega‐diverse louse genus Myrsidea (Amblycera: Menoponidae)

Phylogenetics and host‐specificity of the mega‐diverse louse genus Myrsidea (Amblycera: Menoponidae)
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巨型多样化虱子属 Myrsidea 的系统发育和宿主特异性(Amblycera:Menoponidae)

DOI:
10.1111/syen.12536
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发表时间:
2022
影响因子:
4.8
通讯作者:
Weckstein, Jason D.
Weckstein, Jason D.
中科院分区:
农林科学1区
文献类型:
--
作者:
Kolencik, Stanislav;Cacioppo, Joseph A.;Johnson, Kevin P.;Allen, Julie M.;Sychra, Oldrich;Weckstein, Jason D.

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MyrsideaWaterston是最多样化的咀嚼虱属,主要寄生于鸟类目中种类最多的栖息鸟类(雀形目)。MyrsideaWaterston也寄生于非雀形目的几种宿主,包括巨嘴鸟,拟啄木鸟,啄木鸟和蜂鸟。为了研究寄主特异性、寄主转换和属的限制,我们利用来自23个鸟类寄主家庭的152只桃蚜蝇的线粒体COI基因片段和核EF-1α基因片段的DNA序列数据,重建了桃蚜蝇蝇属的系统发育。与其他高度多样化的虱属不同,只有一小部分桃金娘属寄生在一个以上的宿主物种中。我们发现,寄主家族在桃金娘的系统发育中具有显著的系统发育信号。这些结果表明Myrside通常具有高度的宿主特异性,但也有一些例外,其中宿主转换很重要。我们发现,有两个独立的群体ofMyrsidea寄生巨嘴鸟,都嵌套在Myrsideafound栖息的鸟类,这表明这些巨嘴鸟体外寄生虫可能已经产生了两个独立的主机切换事件。最后,代表属Rampasticola Carriker,这是最初被描述为一个独特的属,由于一套形态独特的字符,福尔斯落在一个强有力的支持分支MyrsideaparasitizingRampastostoucans,因此,我们明确地放置Rampasticola作为同义词Myrsidea。
MyrsideaWaterston is the most diverse genus of chewing lice, primarily parasitizing perching birds (Passeriformes), which is the most speciose avian order.Myrsideaalso parasitize several hosts from non‐passerine groups, including toucans, barbets, woodpeckers (Piciformes) and hummingbirds (Apodiformes). To examine host specificity, host switching and generic limits, we reconstructed a phylogeny of the avian feather louse genusMyrsideausing DNA sequence data from two fragments of the mitochondrial COI gene and a fragment of the nuclear EF‐1α gene for 152Myrsideaspecimens collected from 23 avian host families. Unlike other highly diverse louse genera, only a small proportion ofMyrsideaspecies parasitize more than one host species. We found that host family has significant phylogenetic signal on theMyrsideaphylogeny. These results suggest thatMyrsideais generally highly host‐specific, with some exceptions where host switching is important. We found that there are two separate groups ofMyrsideathat parasitize toucans, and that both are nested withinMyrsideafound on perching birds, suggesting that these toucan ectoparasites may have arisen from two independent host switching events. Lastly, representatives of the genusRamphasticolaCarriker, which was originally described as a distinct genus due to a suite of morphologically unique characters, falls in with a strongly supported clade ofMyrsideaparasitizingRamphastostoucans, and therefore we definitively placeRamphasticolaas a synonym ofMyrsidea.
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