Alobophora sandrae n. gen. n. sp. (Digenea: Caballerotrematidae) infecting Arapaima gigas sensu lato (Osteoglossiformes: Arapaimidae) with a revision of Caballerotrema, key to Caballerotrematidae, and updated phylogeny.

IF 2.3 2区医学 Q2 PARASITOLOGY

Parasite Pub Date : 2024-01-01 Epub Date: 2024-09-23 DOI:10.1051/parasite/2024054

Kamila Cajiao-Mora, John H Brule, Micah B Warren, Steven P Ksepka, Haley R Dutton, Stephen A Bullard

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引用次数: 0

摘要

我们提出并描述了 Alobophora sandrae Cajiao-Mora & Bullard n. gen., n. sp. (Digenea: Caballerotrematidae)，其标本是我们在哥伦比亚 Leticia 附近的亚马逊河从 Arapaima, Arapaima gigas sensu lato (Osteoglossiformes: Arapaimidae) 采集的。Alobophora 与 Caballerotrema Prudhoe（1960 年）的不同之处在于，Alobophora 头领没有突起，角刺成群，头领狭窄（比咽部宽 4-5 倍），而 Caballerotrema 头领有突起，角刺成群，头领宽大（比咽部宽 7-8 倍）。我们将 Caballerotrema annulatum (Diesing, 1850) Ostrowski de Núñez & Sattmann, 2002 重新归入新属，命名为 Alobophora annulata (Diesing, 1850) Cajiao-Mora and Bullard n. comb.，并根据从 arapaima 采集的标本对 Caballerotrema brasiliense Prudhoe, 1960 进行了补充描述。我们还考察了 Caballerotrema piscicola (Stunkard, 1960) 的主模式和副模式 Kostadinova & Gibson, 2001，并得出结论：C. piscicola 是 C. brasiliense 的初级主观异名。我们的 28S 系统发生发现，A. sandrae 与 A. annulata 是姐妹群，该支系与由 C. brasiliense 和 Caballerotrema 的一个无名种组成的支系是姐妹群。Caballerotrematidae是棘鱼科的姊妹科。我们还根据头领突起、角棘排列、咽部与头领宽度比例、睾丸形状与排列、体表棘形状与分布、玻璃体分布以及前列腺细胞的丰富程度，提供了Caballerotrematids的二分检索表。

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Alobophora sandrae n. gen. n. sp. (Digenea: Caballerotrematidae) infecting Arapaima gigas sensu lato (Osteoglossiformes: Arapaimidae) with a revision of Caballerotrema, key to Caballerotrematidae, and updated phylogeny.

We propose and describe Alobophora sandrae Cajiao-Mora & Bullard n. gen., n. sp. (Digenea: Caballerotrematidae) for specimens we collected from arapaima, Arapaima gigas sensu lato (Osteoglossiformes: Arapaimidae) in the Amazon River near Leticia, Colombia. Alobophora differs from Caballerotrema Prudhoe, 1960 by lacking head collar projections and by having clustered corner spines and a narrow head collar (4-5× wider than pharynx), whereas Caballerotrema has head collar projections, lacks clustered corner spines, and has a broad head collar (7-8× wider than pharynx). We reassign Caballerotrema annulatum (Diesing, 1850) Ostrowski de Núñez & Sattmann, 2002 to the new genus, as Alobophora annulata (Diesing, 1850) Cajiao-Mora and Bullard n. comb., and provide a supplemental description of Caballerotrema brasiliense Prudhoe, 1960 based on specimens we collected from arapaima. We also examined the holotype and a paratype of Caballerotrema piscicola (Stunkard, 1960) Kostadinova & Gibson, 2001 and concluded that C. piscicola is a junior subjective synonym of C. brasiliense. Our 28S phylogeny recovered A. sandrae sister to A. annulata, with that clade sister to a clade comprising C. brasiliense and an innominate species of Caballerotrema. Caballerotrematidae was recovered sister to Echinostomatidae. We also provide a dichotomous key to caballerotrematids based on head collar projections, corner spine arrangement, proportional pharynx and head collar breadth, testes shape and arrangement, body surface spine shape and distribution, vitellarium distribution, and abundance of prostatic cells.

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来源期刊

Parasite 医学-寄生虫学

CiteScore

5.50

自引率

6.90%

发文量

审稿时长

3 months

期刊介绍： Parasite is an international open-access, peer-reviewed, online journal publishing high quality papers on all aspects of human and animal parasitology. Reviews, articles and short notes may be submitted. Fields include, but are not limited to: general, medical and veterinary parasitology; morphology, including ultrastructure; parasite systematics, including entomology, acarology, helminthology and protistology, and molecular analyses; molecular biology and biochemistry; immunology of parasitic diseases; host-parasite relationships; ecology and life history of parasites; epidemiology; therapeutics; new diagnostic tools. All papers in Parasite are published in English. Manuscripts should have a broad interest and must not have been published or submitted elsewhere. No limit is imposed on the length of manuscripts, but they should be concisely written. Papers of limited interest such as case reports, epidemiological studies in punctual areas, isolated new geographical records, and systematic descriptions of single species will generally not be accepted, but might be considered if the authors succeed in demonstrating their interest.