Morphological and molecular characterization of Udonella brasiliensis n. sp. (Monogenoidea), an epibiont on Caligus sp. parasite of Ariidae from the southeastern coast of Brazil

Author(s)

Soares, Geusivam B. ^[1] ; Domingues, Marcus V. ^[2] ; Adriano, Edson A. ^{[3, 1]}

Affiliation

^[1] Univ Estadual Campinas UNICAMP, Inst Biol, Dept Biol Anim, Rua Monteiro Lobato 255, BR-13083862 Campinas, SP - Brazil

^[2] Univ Fed Para UFPA, Inst Estudos Costeiros, Travessa Leandro Ribeiro S-N, BR-68600000 Braganca, Para - Brazil

^[3] Univ Fed Sao Paulo UNIFESP, Dept Ecol & Biol Evolut, Rua Prof Arthur Riedel 275, BR-09972270 Diadema, SP - Brazil

• Document type: Journal article
• Source: Parasitology International; v. 83, AUG 2021.
• Web of Science Citations: 0

Abstract

The present study describes Udonella brasiliensis n. sp., an epibiont found on Caligus sp., a parasite the ariids Genidens barbus (Lacepe`de) and Aspistor luniscutis (Valenciennes), caught on the coast of the state of Sa similar to o Paulo, Brazil. Morphological and molecular analyses (partial 18S rDNA) were carried out. The morphological data showed that U. brasiliensis n. sp. can be distinguished from current valid species by its morphometric attributes (e. g., body, pharynx, ovary and testis), while the molecular information supports the proposal of a new species. The 18S rDNA phylogenetic analysis shows a close relationship between the new species and Udonella australis Carvajal \& Sepulveda, in a subclade formed of species that parasitize South American fish. Finally, this study also discusses a scenario of initial irradiation for udonellids. (AU)

• FAPESP's process: 17/17531-0 - Integrative taxonomy, phylogeny and coevolution of monogenoids (Platyhelminthes: Cercomeromorpha) parasites of Ariidae (Osteichthyes: Siluriformes) from Brazilian Coast
• Grantee: Geusivam Barbosa Soares
• Support Opportunities: Scholarships in Brazil - Doctorate