Host defense or parasite cue: Skin secretions mediate interactions between amphibians and their parasites,Ecology Letters

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Host defense or parasite cue: Skin secretions mediate interactions between amphibians and their parasites
Ecology Letters ( IF 7.6 ) Pub Date : 2021-06-26 , DOI: 10.1111/ele.13832
Martin Mayer ₁ , Lia Schlippe Justicia ₂ , Richard Shine ₃ , Gregory P Brown ₃

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Amphibian skin secretions (substances produced by the amphibian plus microbiota) plausibly act as a first line of defense against parasite/pathogen attack, but may also provide chemical cues for pathogens. To clarify the role of skin secretions in host–parasite interactions, we conducted experiments using cane toads (Rhinella marina) and their lungworms (Rhabdias pseudosphaerocephala) from the range-core and invasion-front of the introduced anurans’ range in Australia. Depending on the geographical area, toad skin secretions can reduce the longevity and infection success of parasite larvae, or attract lungworm larvae and enhance their infection success. These striking differences between the two regions were due both to differential responses of the larvae, and differential effects of the skin secretions. Our data suggest that skin secretions play an important role in host–parasite interactions in anurans, and that the arms race between a host and parasite can rapidly generate spatial variation in critical features of that interaction.

中文翻译：

宿主防御或寄生虫提示：皮肤分泌物介导两栖动物与其寄生虫之间的相互作用

两栖动物的皮肤分泌物（由两栖动物和微生物群产生的物质）似乎是抵御寄生虫/病原体攻击的第一道防线，但也可能为病原体提供化学线索。为了阐明皮肤分泌物在宿主-寄生虫相互作用中的作用，我们使用甘蔗蟾蜍（Rhinella marina）和它们的肺虫（Rhabdias pseudosphaerocephala）进行了实验。）来自澳大利亚引入的无尾目动物范围的范围核心和入侵前沿。根据地理区域，蟾蜍皮肤分泌物会降低寄生虫幼虫的寿命和感染成功率，或吸引肺虫幼虫并提高其感染成功率。两个区域之间的这些显着差异是由于幼虫的不同反应和皮肤分泌物的不同影响。我们的数据表明，皮肤分泌物在无尾猿的宿主-寄生虫相互作用中起着重要作用，宿主和寄生虫之间的军备竞赛可以迅速产生这种相互作用的关键特征的空间变化。

更新日期：2021-08-10

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