Morphology and 18S rDNA sequencing of Henneguya peruviensis n. sp. (Cnidaria: Myxosporea), a parasite of the Amazonian ornamental fish Hyphessobrycon loretoensis from Peru: A myxosporean dispersal approach.

Autor: Mathews PD; Department of Animal Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, SP, Brazil. Electronic address: patrickmathews83@gmail.com., Mertins O; Department of Biophysics, Paulista School of Medicine, Federal University of São Paulo, 04023-062 São Paulo, SP, Brazil., Pereira JOL; Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, 13635-900 Pirassununga, SP, Brazil., Maia AAM; Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, 13635-900 Pirassununga, SP, Brazil., Adriano EA; Department of Animal Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, SP, Brazil; Department of Biological Sciences, Federal University of São Paulo, 09972-270 Diadema, SP, Brazil. Electronic address: edapadriano@gmail.com.
Jazyk: angličtina
Zdroj: Acta tropica [Acta Trop] 2018 Nov; Vol. 187, pp. 207-213. Date of Electronic Publication: 2018 Aug 11.
DOI: 10.1016/j.actatropica.2018.08.012
Abstrakt: Myxosporean are endoparasitic cnidarians of wide distribution and responsible for important economic losses in fisheries and aquaculture. A new myxosporean species, Henneguya peruviensis n. sp., is herein described as obtained from the gill filaments of Hyphessobrycon loretoensis caught in the Nanay River, Department of Loreto, Peru. The parasite was found in 37 of 45 (82.2%) examined H. loretoensis. The new species was characterized based on morphological features and 18S rDNA gene sequence data. The sequencing of the 18S rDNA gene from the spores of H. peruviensis n. sp. resulted in 1632 nucleotides and this sequence did not match any of the myxozoan available in the GenBank. Phylogenetic analysis showed that H. peruviensis n. sp. closed together with H. leporinicola. Nonetheless, the 18S rDNA sequences of H. peruviensis n. sp. and H. leporinicola have only 82% similarity. This is the first description and molecular study of a Myxozoa parasitizing fish of the genus Hyphessobrycon in the Amazon basin. Given the importance of the ornamental fish industry in translocation of aquatic organisms worldwide, the international movement of myxosporeans in infected fish is discussed in terms of disease outbreaks and the need for preventative action.
(Copyright © 2018 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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