Phylogenetic relationship between Contracaecum spp. (Nematoda, Anisakidae) parasitizing cormorants (Aves, Phalacrocoracidae) in Argentina.

Autor: Garbin LE; Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina. lgarbin@cepave.edu.ar., Servián A; Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina., Fuentes L; Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina., Morgenthaler A; Centro de Investigaciones Puerto Deseado, Universidad Nacional de la Patagonia Austral, Av. Prefectura Naval s/n, 9050, Puerto Deseado, Santa Cruz, Argentina., Millones A; Centro de Investigaciones Puerto Deseado, Universidad Nacional de la Patagonia Austral, Av. Prefectura Naval s/n, 9050, Puerto Deseado, Santa Cruz, Argentina., Fuchs D; Sección Ornitología, División Zoología Vertebrados (FCNyM-UNLP-CONICET), Paseo del Bosque s/n, B1900FWA, La Plata, Buenos Aires, Argentina., Diaz JI; Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina., Navone GT; Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina.
Jazyk: angličtina
Zdroj: Parasitology research [Parasitol Res] 2023 Dec 19; Vol. 123 (1), pp. 61. Date of Electronic Publication: 2023 Dec 19.
DOI: 10.1007/s00436-023-08070-4
Abstrakt: Species of the genus Contracaecum (Family Anisakidae) exhibit a broad host and geographical distribution, parasitizing aquatic organisms such as piscivorous birds and mammals as their definitive hosts. Several Contracaecum species have been reported parasitizing cormorants (Family: Phalacrocoracidae) in South America. The objective of this study was to highlight phylogenetic relationships between Contracaecum species parasitizing cormorants based on both molecular analyses and the papillae arrangement on the male tail. Some Contracaecum species parasitizing Red-legged cormorants from the Ría Deseado (RD), and other nematodes parasitizing eight Neotropic cormorants from San Miguel del Monte lagoon (SMML), Argentina, were collected and analyzed. Both morphological and phylogenetic analyses allowed us to recognize two species: Contracaecum chubutensis parasitizing Phalacrocorax gaimardi, and Contracaecum australe parasitic in Phalacrocorax brasilianus. According to the obtained sequences (mtDNA cox2, ITS1, ITS2, and SSrRNA), Contracaecum sp. parasitizing P. gaimardi exhibited concordance with the previously reported C. chubutensis parasitizing P. atriceps from Bahía Bustamante, Chubut province. Likewise, Contracaecum sp. isolates parasitizing P. brasilianus showed concordance with C. australe from Chile. Besides, the papillae arrangement on the male tail allowed us to understand the interspecific and genetic relationships between the Contracaecum species. The analyses confirm that C. chubutensis specimens parasitizing P. gaimardi from RD present a new host record for the species, whereas, those C. australe specimens parasitizing P. brasilianus from SMML provide a new geographical record for the species and the extension of its distribution range. Present results also confirm the inland and marine distribution of C. australe and C. chubutensis, respectively.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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