Morphological and Molecular Data Reveal Two New Species of Viannaia (Nematoda: Viannaiidae), Parasitizing Opossums (Mammalia: Didelphidae) in Mexico

Ramírez-Cañas, Sara Angélica; López-Caballero, Jorge; Mata-López, Rosario

doi:10.1645/18-199

Cited by 3 publications

(3 citation statements)

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“…Viannaia arriaguensis was described based on specimens found in P. vossi (originally reported as P. opossum) from Chiapas, Mexico (Ramírez-Cañas et al 2021). This is the first record of V. arriaguensis in D. virginiana as well as the first report in the Yucatán Peninsula.…”

Section: Viannaia Arriaguensismentioning

confidence: 92%

“…In the last two decades, the use of molecular markers has significantly enhanced our knowledge of the helminths of mammals by distinguishing closely related species, especially in helminths where morphological identification is often challenging (López-Caballero et al 2019;Ramírez-Cañas et al 2021). Unfortunately, the application of molecular methods in parasitological studies of terrestrial mammals remains limited, especially in some megadiverse developing countries (Poulin et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, the application of molecular methods in parasitological studies of terrestrial mammals remains limited, especially in some megadiverse developing countries (Poulin et al 2019). In Mexico, most helminth records in opossums have been reported in D. virginiana, D. marsupialis, and P. vossi using morphological methods of adults and egg stages, which, in many cases, do not allow the identification of certain taxa at the species level (Aragón-Pech et al 2018;López-Caballero et al 2019;Ramírez-Cañas et al 2021). This study addresses the application of an integrative taxonomic approach to explore the diversity of helminths in D. virginiana and P. vossi in the Yucatán Peninsula.…”

Section: Introductionmentioning

confidence: 99%

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Morphological and molecular data on helminths of Didelphis virginiana and Philander vossi (Mammalia: Didelphidae) from the Yucatán Peninsula, southeast Mexico

PANTI-MAY,

CHAN-CASANOVA,

CANCHE-POOL

et al. 2024

Zootaxa

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In the present study, helminths from six Didelphis virginiana and one Philander vossi are reported using morphological techniques (clearing, staining, and scanning electron microscopy). Additionally, the 28S rRNA sequences of individuals from nine helminth taxa are provided. Phylogenetic analyses were performed with the new 28S rRNA sequences to confirm the identification and the genealogical relationships of the parasites. Thirteen helminth taxa were identified, comprising the trematodes Brachylaima sp. and Platynosomum illiciens, the cestode Mathevotaenia sp., the nematodes Cruzia americana, Cruzia tentaculata, Viannaia arriaguensis, Viannaia sp., Travassostrongylus sp., Strongyloides sp., Turgida turgida, Trichuris minuta, and Trichuris sp., and the acanthocephalan Oligacanthorhynchus microcephalus. All opossums were infected with at least four helminth taxa. In total, 17 new 28S rRNA sequences from nine helminth taxa were provided. These data, combined with previous records in Mexico, increase the number of helminth taxa parasitizing D. virginiana and P. vossi to 41 and 29, respectively. However, these reports are incompletes and concentered in localities of some states. It is possible that new surveys in the Nearctic and even Neotropical regions will reveal a higher helminth diversity in these mammals in the country.

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Section: Viannaia Arriaguensismentioning

confidence: 92%