Description of Cystodiscus elachistocleis sp. nov. (Cnidaria: Myxosporea) parasitizing the gallbladder of Elachistocleis cesarii from Brazil, based on morphological and molecular analyses
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Published:2021-10-21
Issue:
Volume:775
Page:107-118
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ISSN:2118-9773
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Container-title:European Journal of Taxonomy
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language:
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Short-container-title:EJT
Author:
Vieira Diego Henrique Mirandola DiasORCID,
Pereira Úngari LetíciaORCID,
De Alcantara Edna PaulinoORCID,
Emmerich Enzo,
Quagliatto Santos André LuizORCID,
O´Dwyer Lucia HelenaORCID,
Da Silva Reinaldo JoséORCID
Abstract
Numerous pseudoplasmodia containing myxospores belonging to the genus Cystodiscus were found in the gallbladder of Elachistocleis cesarii from Mato Grosso State, Brazil. Herein, we describe Cystodiscus elachistocleis sp. nov., using morphological and small subunit ribosomal DNA sequences. The mature myxospores were ellipsoid to ovoid, measuring in average 10.6 (9.8–11.2) μm in length and 6.2 (5.6–6.6) μm in width. Polar capsules were pyriform and equal in size measuring in average 3.6 (2.8–4.3) μm in length and 2.6 (2.2–3.1) μm in width. Polar filaments had 2–4 coils. The myxospores had 3–5 transverse ridges. The phylogenetic analysis showed Cystodiscus elachistocleis sp. nov. as a sister species of Cystodiscus cf. immersus 1, in a subclade formed by species that parasitize the amphibians gallbladder. This is the first species of Cystodiscus described parasitizing a species of Elachistocleis and the third species of Cystodiscus described in Brazil.
Publisher
Museum National D'Histoire Naturelle
Subject
Ecology, Evolution, Behavior and Systematics