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Justo MCN, de Oliveira Martins WM, Cohen SC. A New Species of Unibarra (Monogenoidea, Dactylogyridae) Parasite of Oxydoras niger From Juruá River, State of Acre, Brazil and New Data for U. paranoplatensis. Acta Parasitol 2023:10.1007/s11686-023-00681-2. [PMID: 37191736 DOI: 10.1007/s11686-023-00681-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 04/24/2023] [Indexed: 05/17/2023]
Abstract
Monogenoids are ectoparasites that have a simple one-host lifecycle, high species diversity, and a relatively high host specificity. During studies on the helminth fauna of fishes from the Jurua River, in Acre State, Brazil, a new species of the monotypic genus Unibarra Suriano & Incorvaia, 1995 was found parasitizing Oxydoras niger Valenciennes, 1821. Unibarra juruaensis n. sp. is allocated in the genus based on the presence of a single haptoral bar, marginal hooks similar in shape and size, gonads partially overlapping, and a conspicuous filament which connects the base of the male copulatory organ with the accessory piece. The new species differs from the only species of the genus by the smaller size of the body and of the structures, by the morphology of copulatory complex, with an accessory piece thinner than that of U. paranoplatensis Suriano & Incorvaia, 1995 and by the presence of two eyespots. The type species, U. paranoplatensis, is referred in a new host, Pimelodus blochii Valenciennes, 1840, with new morphological data. A table of measurements of the new species and previous and the present reports of U. paranoplatensis is presented.
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Affiliation(s)
- Marcia Cristina Nascimento Justo
- Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Avenida Brasil, 4365, Rio de Janeiro, RJ, 21040-900, Brasil
| | - Williane Maria de Oliveira Martins
- Laboratório de Biologia Geral do Instituto Federal de Acre (IFAC), Campus Cruzeiro do Sul, Estrada da Apadec nº1192, Bairro Nova Olinda, CEP: 69980-000, Cruzeiro do Sul, Acre, Brazil
| | - Simone Chinicz Cohen
- Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Avenida Brasil, 4365, Rio de Janeiro, RJ, 21040-900, Brasil.
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Negrelli DC, Iannacone J, Abdallah VD, Azevedo RKDE. Qualitative and quantitative study of parasites of Pimelodus maculatus and Rhamdia quelen from the Jacaré-Pepira River, state of São Paulo, Brazil. AN ACAD BRAS CIENC 2021; 93:e20190571. [PMID: 34133531 DOI: 10.1590/0001-3765202120190571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 03/16/2020] [Indexed: 11/22/2022] Open
Abstract
In the freshwater ecosystems of Brazil can be found high biodiversity of fish, about 5160 species. However, the Jacaré-Pepira River, located in the state of São Paulo, Brazil, presents a diversity of fish still to be explored in ichthyological studies. Metazoan parasites of Pimelodus maculatus and Rhamdia quelen were qualitatively and quantitatively diagnosed. Ten species of parasites (Demidospermus sp., D. majusculus, D. bidiverticulatum, D. paravalenciennesi, Ameloblastella paranaensis, Scleroductus sp., Riggia sp., Austrodiplostomum compactum, Helobdella sp. and Neochinorhynchus pimelodi) were collected in P. maculatus and eight species of parasites (Aphanoblastella robustus, A. mastigatus, Phyllodistomum rhamdiae, Crocodilicola pseudostoma, Henneguya jundiai, Contracaecum sp., Rhabdochona sp. and Capillariidae gen. sp.) were collected in R. quelen. All parasites presented aggregate distribution. A significant correlation was observed in P. maculatus concerning the weight with the prevalence of ectoparasite D. majusculus; however, R. quelen showed a relation to the length and weight with the abundance of ectoparasite A. mastigatus and endoparasites. The parasitic community of P. maculatus and R. quelen was characterized by high diversity, high richness, and low uniformity.
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Affiliation(s)
- Débora C Negrelli
- Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Instituto de Biociências, Departamento de Bioestatística, Biologia Vegetal, Parasitologia e Zoologia, Setor Parasitologia, Rua Professor Doutor Antônio Celso Wagner Zanin, 250, 18618-689 Botucatu, SP, Brazil
| | - José Iannacone
- Universidad Nacional Federico Villarreal (UNFV), Laboratorio de Ecología y Biodiversidad Animal (LEBA), Facultad de Ciencias Naturales y Matemática, Grupo de Investigación en Sostenibilidad Ambiental, Escuela Universitaria de Posgrado, Jr. Río Chepén, 290, 15007 El Agustino, Lima, Peru.,Universidad Cientifica del Sur, Carr, Laboratorio de Ingeniería Ambiental, Carrera de Ingeniería Ambiental, Panamericana Sur, Km 19, 15067 Villa El Salvador, Lima, Peru
| | - Vanessa D Abdallah
- Programa de Pós-Graduação em Análise de Sistemas Ambientais, Centro Universitário CESMAC, Rua Professor Ângelo Neto, 50, 57051-530 Maceió, AL, Brazil
| | - Rodney K DE Azevedo
- Programa de Pós-Graduação em Análise de Sistemas Ambientais, Centro Universitário CESMAC, Rua Professor Ângelo Neto, 50, 57051-530 Maceió, AL, Brazil
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