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Morphology and molecular characterization of a new species of Tereancistrum parasite from the gills of Brycon nattereri

Published online by Cambridge University Press:  18 February 2025

W.T. Hasuike Open the ORCID record for W.T. Hasuike [Opens in a new window] ,
B. Scorsim Open the ORCID record for B. Scorsim [Opens in a new window] ,
I.S. Arjona Open the ORCID record for I.S. Arjona [Opens in a new window] ,
R.B. Amaral Open the ORCID record for R.B. Amaral [Opens in a new window] ,
L. Damacena-Silva Open the ORCID record for L. Damacena-Silva [Opens in a new window] ,
G.A. Araújo Open the ORCID record for G.A. Araújo [Opens in a new window] ,
S. Bellay Open the ORCID record for S. Bellay [Opens in a new window] ,
A.V. de Oliveira Open the ORCID record for A.V. de Oliveira [Opens in a new window]  and
R.M. Takemoto Open the ORCID record for R.M. Takemoto [Opens in a new window]
W.T. Hasuike*
Affiliation:
Programa de Pós-graduação em Biologia Comparada, Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura - NUPÉLIA, Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil
B. Scorsim
Affiliation:
Programa de Pós Graduação em Ecologia de Ambientes Aquáticos Continentais (PEA), Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil
I.S. Arjona
Affiliation:
Programa de Pós Graduação em Ecologia de Ambientes Aquáticos Continentais (PEA), Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil
R.B. Amaral
Affiliation:
Laboratório de Teoria, Metacomunidades e Ecologia da Paisagem, Universidade Federal Goiás, Av. Esperança, s/n, Campus Samambaia, Goiânia, Goiás, Brasil
L. Damacena-Silva
Affiliation:
Laboratório de Pesquisa da Interação Parasito-Hospedeiro, Universidade Estadual de Goiás, BR 153, 3105, 75132-400 Anápolis, Goiás, Brazil
G.A. Araújo
Affiliation:
Laboratório de Teoria, Metacomunidades e Ecologia da Paisagem, Universidade Federal Goiás, Av. Esperança, s/n, Campus Samambaia, Goiânia, Goiás, Brasil Programa de Pós-Graduação em Biodiversidade Animal, Universidade Federal de Goiás, Av. Esperança, s/n, Campus Samambaia, 74690-900 Goiânia, Goiás, Brazil
S. Bellay
Affiliation:
Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura - NUPÉLIA, Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil
A.V. de Oliveira
Affiliation:
Programa de Pós Graduação em Ecologia de Ambientes Aquáticos Continentais (PEA), Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil Departamento de Biotecnologia, Genética e Biologia Celular (DBC), Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil
R.M. Takemoto
Affiliation:
Programa de Pós-graduação em Biologia Comparada, Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil Programa de Pós Graduação em Ecologia de Ambientes Aquáticos Continentais (PEA), Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura - NUPÉLIA, Centro de Ciências Biológicas, Universidade Estadual de Maringá (UEM), Maringá, Paraná, Brazil
*
Corresponding author: W.T. Hasuike; Email: hasuike.wt@gmail.com
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Abstract

A new species of Tereancistrum Kritsky, Thatcher & Kayton, 1980, collected from the gills of Brycon nattereri (Bryconidae) in the Cerrado, in the state of Goiás, Brazil, is described based on morphological and molecular data, based on the mitochondrial cytochrome c oxidase subunit 1 (COI) gene region. Tereancistrum campanum n. sp. is distinguished from all its congeners by the unique ‘bell-shaped’ accessory piece in the male copulatory complex. Molecular analysis revealed that the specimens analyzed formed a distinct group from other Tereancistrum sequences and that the sequences of Tereancistrum kerri showed genetic divergence when compared to T. campanum n. sp., confirming the molecular distinction between the two species. This study also expands the knowledge of parasitic diversity in the Tocantins-Araguaia River Basin and extends the geographical distribution of the genus Tereancistrum. The combination of morphological and genetic data was essential for delimiting this new species, highlighting the importance of integrative approaches in understanding the diversity of monogeneans in freshwater fish in Brazil.

Keywords

Brycon nattereriDactylogyridaeectoparasitesmolecular datanew species
Type
Research Paper
Information
Journal of Helminthology , Volume 99 , 2025 , e32
Copyright
© The Author(s), 2025. Published by Cambridge University Press

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