Myxobolus imparfinis n. sp (Myxozoa: Myxosporea), a new gill parasite of Imparfinis mirini Haseman (Siluriformes: Heptapteridae) in Brazil

Autor(es)

Mirandola Dias Vieira, Diego Henrique ; Tagliavini, Vinicius Panciera ; Abdallah, Vanessa Doro ; de Azevedo, Rodney Kozlowiski

• Tipo de documento: Artigo Científico
• Fonte: Systematic Parasitology; v. 95, n. 2-3, p. 10-pg., 2018-03-01.

Resumo

A new species of myxozoan, Myxobolus imparfinis n. sp. is described based on material from the gills of Imparfinis mirini (Haseman) (Heptapteridae). Mature myxospores are round, measuring 7.1-8.4 (7.9 +/- 0.3) mu m in length, 4.5-6.2 (5.5 +/- 0.5) mu m in width and 3.1-4.2 (3.7 +/- 0.3) mu m in thickness. The polar capsules are of unequal size, the larger polar capsule measuring 3.4-4.5 (3.9 +/- 0.3) mu m in length and 1.4-2.0 (1.7 +/- 0.1) mu m in width and the smaller capsule measuring 3.1-3.8 (3.4 +/- 0.2) mu m in length and 1.2-1.8 (1.5 +/- 0.2) mu m in width. The polar filament presents 6-7 coils. Spores had a prevalence of infection of 75% (6/8). In histological analyses we detected the development site of spores in primary filaments, in afferent branchial artery, thus classifying the type of infection to the filamental type and vascular subtype. The phylogenetic analyses of a dataset including species Myxobolus Butschli, 1882 and Henneguya Th,lohan, 1892 from South America recovered M. imparfinis n. sp. as a sister species of Myxobolus flavus Carriero, Adriano, Silva, Ceccarelli & Maia, 2013. To our knowledge, this is the first record of a myxozoan species parasitising I. mirini. (AU)

• Processo FAPESP: 15/24901-2 - Filogenia e taxonomia de mixozoários parasitos de peixes provenientes de rios interiores do estado de São Paulo
• Beneficiário: Diego Henrique Mirandola Dias Vieira
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/12862-0 - Análise da biodiversidade dos mixozoários (Myxozoa: Myxosporea) parasitos das espécies de peixes dominantes do Rio Batalha, médio Rio Tietê, SP, Brasil através da caracterização morfológica, histológica, ultraestrutural e molecular
• Beneficiário: Rodney Kozlowiski de Azevedo
• Modalidade de apoio: Auxílio à Pesquisa - Regular