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谁吃了谁?谁吃了谁? 非本地牛Physa acuta,本地牛Digeneans,和一个共生小牛之间的相互作用

Anna Stanicka¹, Jarosław Kobak¹, Zuzanna Kowaleska¹

¹Department of Invertebrate Zoology and Parasitology, Nicolaus Copernicus University in Toruń, Toruń, Poland.

|November 10, 2025

概括

牛Physa acuta消耗了自由生活的寄生虫幼虫,破坏了传播. 然而,它也充当宿主,可能有助于寄生虫在新生态系统中传播.

科学领域:

生态生态学生态生态学
寄生虫学的寄生虫学
侵入性物种生物学生物学

背景情况:

寄生虫传播受到非宿主生物体消耗幼虫阶段的影响.
与牛一样,盆地虫在减少寄生虫负荷方面的作用尚不清楚.

研究的目的:

通过实验评估牛Physa acuta对自由生活的虫消费的情况.
确定牛的大小和其他生物的共同殖民如何影响幼虫的减少.
研究P. acuta作为寄生虫消费者和宿主的双重作用.

主要方法:

实验评估Physa acuta对寻虫 (Diplostomum sp., Trichobilharzia sp.) 的养情况和青少年类植物 (Notocotylus sp. ) 的情况.
评估影响幼虫消费的因素,包括牛体型和Chaetogaster limnaei limnaei的存在.
检查P. acuta的digenean metacercariae,以评估其作为中间宿主的作用.

主要成果:

敏体消耗了所有测试的幼虫阶段,Notocotylus sp.的消耗更高. 青少年由较大的牛.
幼虫的减少受到甲状腺菌感染的影响,根据寄生虫的身份产生不同的影响.
由Chaetogaster limnaei limnaei殖民增加了寻菌的摄入量,这表明了协同的食效应.
大多数牛都含有甲,这表明它们经常被用作第二个中间宿主.

结论:

敏体 (Physa acuta) 作为自由生活的寄生虫幼虫的捕食者,可能破坏传播.
牛还可以作为中间宿主,这可能有助于寄生虫的持久性和传播.
这种双重生态作用既影响了寄生虫的动态,也影响了这种侵入性牛的成功.

关键词:

在自由生活的幼虫阶段.非宿主效应的影响非本地物种的非本地物种.抑制寄生虫抑制抑制寄生虫寄生虫的传播寄生虫的传播捕食者寄生虫的相互作用

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