Morphology and small subunit rDNA-based phylogeny of Ceratomyxa amazonensis n. sp parasite of Symphysodon discus, an ornamental freshwater fish from Amazon

Autor(es)

Mathews, Patrick D. ; Naldoni, Juliana ; Maia, Antonio A. ; Adriano, Edson A.

• Tipo de documento: Artigo Científico
• Fonte: Parasitology Research; v. 115, n. 10, p. 5-pg., 2016-10-01.

Resumo

The specious genus Ceratomyxa Thelodan, 1892, infect mainly gallbladder of marine fishes, with only five species reported infecting species from freshwater environment. This study performed morphological and phylogenetic analyses involving a new Ceratomyxa species (Ceratomyxa amazonensis n. sp.) found in gallbladder of Symphysodon discus Heckel, 1840 (Perciformes: Cichlidae), an important ornamental fish endemic to Amazon basin. Mature spores were strongly arcuate shaped and measured 7.0 +/- 0.3 (6.27.6) mu m in length, 15.8 +/- 0.4 (15.0-16.7) mu m in thickness, and polar capsules 3.22 +/- 0.34 (2.4-3.6) mu m in length and 2.63 +/- 0.17 (2.4-2.9) mu m in width. This was the first small subunit ribosomal DNA (SS rDNA) sequencing performed to Ceratomyxa species parasite of freshwater fish, and the phylogenetic analysis showed C. amazonensis n. sp. clustering in the early diverging subclade of the ceratomyxids, together with species of parasites of amphidromous/estuaries fishes, suggesting some role of the transition of the fishes between marine/freshwater environments in the evolutionary history of these parasites. (AU)

• Processo FAPESP: 13/14656-5 - Sistemática e interação parasito-hospedeiro de mixosporídeos parasitos de peixes ornamentais da Bacia Amazônica
• Beneficiário: Patrick Mathews Delgado
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/22700-7 - Sistemática e interação parasito-hospedeiro de mixosporídeos parasitos de peixes da família Pimelodidae da Bacia Amazônica
• Beneficiário: Juliana Naldoni
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/21374-6 - Sistemática e interação parasito-hospedeiro de parasitos do filo Myxozoa em peixes de importância econômica da Bacia Amazônica
• Beneficiário: Edson Aparecido Adriano
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular