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Taxonomy and Systematics of Two New Species of Myxobolus (Cnidaria: Myxobolidae) Parasitizing the Gills of Mugil curema (Mugilidae) from the Brazilian Coast

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Abstract

Purpose

We describe two new species of Myxobolus (Myxobolidae) found parasitizing Mugil curema from two locations in Brazil: Myxobolus curemae n. sp. from gill arch and rays and Myxobolus maceioensis n. sp. from gill lamellae.

Methods

We based the descriptions on myxospore morphology, histology, and small-subunit ribosomal DNA sequences.

Results

Myxospores of the two new species had similar morphology and morphometry but differed in spore body width and length, and ssrDNA sequences differed by 10.5%. These data supported the diagnosis of the parasites as distinct and novel species. The phylogenetic analysis showed a subclade formed by species that parasitize Mugiliformes, with M. maceioensis n. sp. as a sister species of Myxobolus episquamalis and Myxobolus bizerti, while there is a group of six species that are sister related to M. curemae n. sp. Our analysis was consistent with previous studies suggesting that orders of the hosts are strongly correlated with phylogenetic signals in the Myxobolidae.

Conclusions

Myxobolus curemae n. sp. and M. maceioensis n. sp. are new species identified parasitizing M. curema.

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Data Availability

The data used in this study are included in the manuscript.

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Funding

This work was supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) [Grant numbers 2020/05412-9 and 2019/25223-9], Fundação de Amparo à Pesquisa do Estado de Alagoas (FAPEAL) [Grant number 60030.0000000464/2020] and Conselho Nacional de Desenvolvimento Científico e Tecnológico—CNPq [Grant number 309125/2017-0].

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Correspondence to Diego Henrique Mirandola Dias Vieira.

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During the present research work, all applicable international, national or institutional guidelines for the care and use of animals were followed. All the protocols used have been approved by Animal Ethical Committee.

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Vieira, D.H.M.D., Agostinho, B.N., Negrelli, D.C. et al. Taxonomy and Systematics of Two New Species of Myxobolus (Cnidaria: Myxobolidae) Parasitizing the Gills of Mugil curema (Mugilidae) from the Brazilian Coast. Acta Parasit. 67, 1206–1216 (2022). https://doi.org/10.1007/s11686-022-00569-7

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