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首页> 外文期刊>International Journal of Zoology >Anurans as Intermediate and Paratenic Hosts of Helminth Infections in the Rainforest and Derived Savanna Biotopes of Southern Nigeria
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Anurans as Intermediate and Paratenic Hosts of Helminth Infections in the Rainforest and Derived Savanna Biotopes of Southern Nigeria

机译：在热带雨林和尼日利亚南部衍生的热带稀树草原生物群落中蠕虫感染的中间和寄生虫寄主

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摘要

Anurans from the rainforest (Okomu National Park) and derived savanna (Agbede) locations in Nigeria were investigated for their role either as intermediate or paratenic hosts of helminth infections. A total of 269 anuran specimens (157 from the OkomuNational Park and 112 from Agbede) were examined. Metacercariae of a strigeoid trematode, two nematode species, a proteocephalid cestode, and an acanthocephalan were recovered from infected hosts. Except for the strigeoid trematode, which was only recorded in the rainforest, there was no ecological dichotomy in the distribution of the larval parasites recorded. Tree frogs from the rainforest only served as second intermediate hosts for the strigeoid trematode. The two nematode larvae (type I and type II) found in the body cavity of the infected host are believed to use them as paratenic hosts. Tree frogs were the predominant intermediate hosts of the proteocephalid cestode larvae in the rainforest, while Ptychadena and Phrynobatrachus spp. served thisfunction in the derived savanna. The occurrence of cystacanths in the anurans from both biotopes confirms their known role as paratenic host for acanthocephalans. Afrixalus dorsalis is a new host record for the ascaridoid nematode while the finding of the strigeoid trematode, the proteocephalid cestode larvae and acanthocephalan cystacanths in the anurans investigated represents new geographical records.
机译：研究了来自雨林（奥科姆国家公园）和衍生的热带稀树草原（阿格德德）在尼日利亚的无头乌龙作为蠕虫感染的中间宿主或寄生虫宿主的作用。总共检查了269个无核动物标本（来自OkomuNational Park的157个和来自阿格德的112个）。从感染的宿主中回收了星状类吸虫的ne尾虫，两种线虫，一种头脑虫的甲虫和一种头脑虫的甲虫。除了仅在雨林中记录的星状吸虫外，在幼虫的分布中没有生态二分法。来自雨林的树蛙只作为类星状吸虫的第二中间宿主。据信在被感染宿主的体腔中发现的两个线虫幼虫（I型和II型）被用作寄生虫宿主。树蛙是热带雨林中头型头目小尾虫幼虫的主要中间宿主，而Ptychadena和Phrynobatrachus spp是其中的主要宿主。在衍生的稀树草原中发挥了这一作用。两种生物群落在无核动物中都出现了囊藻类，这证实了它们作为棘脑动物的腹膜宿主的作用。南非黑线虫（Afrixalus dorsalis）是类scar虫线虫的新宿主记录，而在所研究的无核动物中发现星状类线虫，线头类c虫幼虫和棘头类囊尾藻是新的地理记录。

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