Morphological and molecular analysis of Henneguya lagunensis n. sp. (Cnidaria, Myxosporea) parasitizing the gills of Eugerres brasilianus from Brazil

Azevedo, Rodney Kozlowiski de; Negrelli, Débora Caroline; Oliveira, Cristiano Pinto de; Abdallah, Vanessa Doro; Camara, Juliana Pereira Sarmento; Matos, Edílson; Vieira, Diego Henrique Mirandola Dias

doi:10.1016/j.parint.2020.102184

Cited by 6 publications

(2 citation statements)

References 35 publications

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“…These results reinforce the hypothesis that host affinity is a strong evolutionary signal for myxobolids (Moreira et al, 2014;Vieira et al, 2018) and that the origin and irradiation of these parasites reflect the evolution of their hosts (Azevedo et al, 2021). The phylogeny presented here reinforces this finding, since the sequences analyzed were grouped according to the order and family of the hosts.…”

Section: Discussionsupporting

confidence: 88%

“…Polyphyletism is a striking feature in most myxozoan genera ( Kent et al, 2001 ; Azevedo et al, 2021 ). In addition to the combination of morphological and molecular analyses, factors related to the environment and tropism in relation to the host have been shown to be important in establishing the evolutionary relationships of this group ( Fiala, 2006 ; Rocha et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

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Phylogeny and ultrastructure of Myxobolus rangeli n. sp. (Myxozoa, Bivalvulida), a histozoic parasite in Siluriformes fish from the Amazon region

Silva

Giese

et al. 2023

Rev. Bras. Parasitol. Vet.

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A new species of Myxobolus parasitizing the arterial bulb and cardiac musculature of the freshwater fish Pimelodus ornatus Kner, 1858, from the Arari river in the municipality of Cachoeira do Arari, island of Marajó, Pará, Brazil, was described. In the present study, the observed prevalence of myxozoan parasites in the heart tissue of the hosts was 20% (6/30). The myxozoans observed had mature biconvex spores, slightly rounded, an anterior end with two pyriform polar capsules and a posterior end with very evident sporoplasm, measuring 8 ± 0.2 μmin length. The spore width was 5.8 ± 0.4 μm, with a thickness of 3.4 ± 0.2μm. The length of the polar capsules was 3.6 ± 0.3 μm and the width was 1.2 ± 0.2μm, with 6 to 7 turns of the polar filament. The divergences observed, regarding the morphometric and genetic structure of SSU rDNA, in relation to other Myxobolidae already described in the literature, confirm the description of the new species Myxobolus rangeli n. sp.

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Section: Discussionsupporting

confidence: 88%