Issue |
Parasite
Volume 31, 2024
|
|
---|---|---|
Article Number | 22 | |
Number of page(s) | 14 | |
DOI | https://doi.org/10.1051/parasite/2024021 | |
Published online | 10 April 2024 |
Research Article
Parasites (Monogenea) of tilapias Oreochromis niloticus and Coptodon rendalli (Cichlidae) in a river spring in Brazil
Parasites (Monogenea) des tilapias Oreochromis niloticus et Coptodon rendalli (Cichlidae) dans une source au Brésil
1
São Paulo State University (UNESP), Institute of Biosciences, Department of Biodiversity and Biostatistics, Section of Parasitology, Botucatu, SP, Brazil
2
Escuela Nacional de Estudios Superiores, Unidad Mérida, Universidad Nacional Autónoma de México, 97357 Ucú, Yucatán, Mexico
* Corresponding author: mbe.bio@gmail.com
Received:
30
July
2023
Accepted:
13
March
2024
In the present study, we examined 30 individuals of introduced African cichlids, Oreochromis niloticus and Coptodon rendalli, collected in a river spring of the Pardo River, Paranapanema River basin, southeastern Brazil. Based on morphological and molecular analyses of the partial LSU rDNA gene, we identified four species of monogeneans, Cichlidogyrus tilapiae, C. thurstonae, C. mbirizei, and Scutogyrus longicornis on the gills of O. niloticus, whereas individuals of C. rendalli were infested only with C. papernastrema. This is the first record of C. mbirizei and C. papernastrema in tilapias from Brazil. The ecological consequences of the introduction of exotic species of tilapia such as O. niloticus and C. rendalli along with their monogenean parasites in a wild environment represented by a river spring are discussed. Our new molecular data on Cichlidogyrus and Scutogyrus contribute to the investigation of the phylogenetic interrelationships of these widely distributed genera of monogeneans since their species composition is still unsettled.
Résumé
Dans la présente étude, nous avons examiné 30 individus de cichlidés africains introduits, Oreochromis niloticus et Coptodon rendalli, collectés dans une source fluviale du fleuve Pardo, bassin du fleuve Paranapanema, dans le sud-est du Brésil. Sur la base d’analyses morphologiques et moléculaires du gène partiel de l’ADNr LSU, nous avons identifié quatre espèces de monogènes, Cichlidogyrus tilapiae, C. thurstonae, C. mbirizei et Scutogyrus longicornis sur les branchies d’O. niloticus, alors que les individus de C. rendalli étaient infestés uniquement par C. papernastrema. Il s’agit du premier signalement de C. mbirizei et C. papernastrema chez des tilapias du Brésil. Les conséquences écologiques de l’introduction d’espèces exotiques de tilapia telles que O. niloticus et C. rendalli ainsi que leurs monogènes parasites dans un environnement sauvage représenté par une source fluviale sont discutées. Nos nouvelles données moléculaires sur Cichlidogyrus et Scutogyrus contribuent à l’étude des interrelations phylogénétiques de ces genres de monogènes largement distribués puisque leur composition spécifique est encore incertaine.
Key words: Monogenea / Cichlidogyrus / Scutogyrus / Neotropical region / LSU rDNA / Exotic fishes
Note to the reader: The author's firstname was incorrectly spelled. It has been corrected to "Diego Henrique Mirandola Dias Vieira" on 8 May 2024.
© M.B. Ebert et al., published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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