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

Author(s)

Mirandola Dias Vieira, Diego Henrique ; Agostinho, Beatriz Narciso ; Negrelli, Debora Caroline ; da Silva, Reinaldo Jose ; de Azevedo, Rodney Kozlowiski ; Abdallah, Vanessa Doro

• Document type: Journal article
• Source: ACTA PARASITOLOGICA; v. 67, n. 3, p. 11-pg., 2022-05-20.

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 Myxoboluscuremae n. sp. and M. maceioensis n. sp. are new species identified parasitizing M. curema. (AU)

• FAPESP's process: 20/05412-9 - Diversity, taxonomy and systematic of fish parasites from Pardo River, Middle Paranapanema River, São Paulo State
• Grantee: Reinaldo José da Silva
• Support Opportunities: BIOTA-FAPESP Program - Regular Research Grants
• FAPESP's process: 19/25223-9 - Knowledge of fish parasitic fauna and its use in the water resource management and environmental impact process
• Grantee: Reinaldo José da Silva
• Support Opportunities: Regular Research Grants