A new species of Versteria (Cestoda: Taeniidae) parasitizing Galictis cuja (Carnivora: Mustelidae) from Patagonia, Argentina: Morphological and molecular characterization

被引：3

作者：

Bagnato, Estefania ^{[1
]}

Gilardoni, Carmen ^{[2
]}

Martin, Gabriel Mario ^{[1
,3
]}

Digiani, Maria Celina ^{[4
]}

机构：

[1] Univ Nacl Patagonia San Juan Bosco, Fac Ciencias Nat & Ciencias Salud, Lab Invest Evoluc & Biodivers, Ruta Nacl N 259,16-4 Km, RA-9200 Chubut, Argentina

[2] Ctr Nacl Patagon CENPAT, Consejo Nacl Invest Cient & Tecn CONICET, Ctr Cientif Tecnol, Lab Parasitol LAPA,Inst Biol Organismos Marinos I, Blvd Almirante Brown 2915, RA-9120 Puerto Madryn, Chubut, Argentina

[3] Ctr Invest Esquel Montana & Estepa Patagon CIEMEP, CONICET, UNPSJB, Gen Roca 780, RA-9200 Esquel, Chubut, Argentina

[4] Univ Nacl La Plata, Fac Ciencias Nat & Museo, Div Zool Invertebrados, CONICET, Paseo Del Bosque S-N, RA-1900 La Plata, Buenos Aires, Argentina

来源：

INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE | 2022年 / 19卷

关键词：

Galictis cuja; Versteria; Phylogeny; cox1; Patagonia; Argentina; PHYLOGENY; IDENTIFICATION; INFECTION; LINNAEUS;

D O I：

10.1016/j.ijppaw.2022.07.007

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Via morphological and molecular analysis, we describe a new species of taeniid from Patagonia (Argentina): Versteria cuja n. sp., parasitizing the Lesser grison Galictis cuja (Molina) (Carnivora: Mustelidae). This is the first report of a species of Versteria in Argentina and for a native mustelid. The new species (the third in the genus Versteria) is proposed using an integrative taxonomic approach, based on traditional morphology (distinctive morphological and morphometric diagnostic characters), genetic distances and phylogeny based on molecular data, the distinct geographical distribution, and the different definitive host species. Versteria cuja n. sp. mainly differs from Versteria mustelae (Gmelin, 1790) (from Europe) in the number of testes (54-85 vs. 83-127 in V. mustelae), the rostellum size (39-75 vs. 85-180 mu m in V. mustelae), the genital atrium size (170-420 vs. 68-91 mu m in V. mustelae) and in the hooks' shape. It also differs from the African species Versteria brachyacantha (Baer and Fain, 1951) by having smaller measurements regarding the main diagnostic characters, i.e. size of scolex, rostellum and suckers, number, size and shape of rostellar hooks, number of testes, and by having smooth cirrus (vs. cirrus covered with hair-like bristles in V. brachyacantha). Phylogenetical analysis using cox1 showed our specimens clustering with North American isolates of Versteria sp. in a well-supported American Glade (mean genetic divergence 0.024), separated from another Glade composed of different isolates of V. mustelae (0.093). The close relationship between the new species and the North American species, known as "zoonotic" Versteria sp., and responsible for fatal infections by metacestodes in free-ranging wildlife (rodents), captive primates and immunosuppressed people, lead us to think that the zoonotic potential of Versteria cuja n. sp. should not be discarded.

引用

页码：68 / 77

页数：10

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[2]

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[3]

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