Acanthoatractis xinguensis n. gen., n. sp. (Nematoda: Cosmocercoidea: Atractidae) parasite of yellow-spotted Amazon river turtle, Podocnemis unifilis Troschel (Testudines: Podocnemididae) in Brazilian Amazon

IF 2 3区医学 Q3 ECOLOGY International Journal for Parasitology-Parasites and Wildlife Pub Date : 2024-07-02 DOI:10.1016/j.ijppaw.2024.100961

Ronald Ferreira Jesus, Bianca Nandyara, Jeannie Nascimento dos Santos, Francisco Tiago de Vasconcelos Melo

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Abstract

Nematodes collected from the stomach of the yellow-spotted turtle Podocnemis unifilis Troschel, 1848 (Testudinidae) in the Brazilian state of Pará are assigned to a new genus, allocated to the family Atractidae (Cosmocerdoidea). Acanthoatractis n. gen. differs from all other genera of Atractidae based on the combination of the following morphological characters: cephalic extremity surrounded by eight bifurcated, wrench-shaped sclerotized structures arranged in a circle; oral opening encircled by two sclerotized pieces with pointed ends and a median portion with a pair of hooks; in males the larger (left) spicule is narrower in the middle third and the gubernaculum is absent. The type species, Acanthoatractis xinguensis n. gen., n. sp., has nine pairs of caudal papillae and a single papilla anterior to the cloacal lip. The new species is the seventh record of an atractid genus parasitizing P. unifilis.

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Acanthoatractis xinguensis n. gen., n. sp. (Nematoda: Cosmocercoidea: Atractidae) parasite of yellow-spotted Amazon river turtle, Podocnemis unifilis Troschel (Testudines: Podocnemididae) in Brazilian Amazon

从巴西帕拉州的黄斑龟 Podocnemis unifilis Troschel, 1848（Testudinidae）胃中采集到的线虫被归入一个新属，隶属于苍术科（Cosmocerdoidea）。Acanthoatractis n. gen. 与其他所有苍术科属的不同之处在于它们具有以下形态特征：头极周围有 8 个分叉的扳手形硬质结构，呈圆形排列；口腔开口处有两个末端尖的硬质片，中间部分有一对钩；雄性较大的（左侧）棘刺在中间 1/3 部分较窄，且无钩突。模式种 Acanthoatractis xinguensis n. gen., n. sp. 有 9 对尾乳突，泄殖腔唇前部有一个乳突。该新种是第七个寄生于 P. unifilis 的苍术属记录。

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来源期刊

International Journal for Parasitology-Parasites and Wildlife Medicine-Infectious Diseases

CiteScore

3.80

自引率

5.60%

发文量

113

审稿时长

45 days

期刊介绍： The International Journal for Parasitology: Parasites and Wildlife (IJP-PAW) publishes the results of original research on parasites of all wildlife, invertebrate and vertebrate. This includes free-ranging, wild populations, as well as captive wildlife, semi-domesticated species (e.g. reindeer) and farmed populations of recently domesticated or wild-captured species (e.g. cultured fishes). Articles on all aspects of wildlife parasitology are welcomed including taxonomy, biodiversity and distribution, ecology and epidemiology, population biology and host-parasite relationships. The impact of parasites on the health and conservation of wildlife is seen as an important area covered by the journal especially the potential role of environmental factors, for example climate. Also important to the journal is ''one health'' and the nature of interactions between wildlife, people and domestic animals, including disease emergence and zoonoses.