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A new species of Dermadena (Digenea: Lepocreadiidae) from the stone triggerfish Pseudobalistes naufragium (Tetraodontiformes: Balistidae) in the South American Pacific Ocean

Published online by Cambridge University Press:  12 May 2022

R.O. Simões ,
J.D. Chero ,
C.L. Cruces ,
G.M. Sáez ,
A. Maldonado Júnior  and
J.L. Luque Open the ORCID record for J.L. Luque [Opens in a new window]
R.O. Simões
Affiliation:
Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil
J.D. Chero
Affiliation:
Departamento de Protozoología, Helmintología e Invertebrados afines, Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Lima, Peru Programa de Pós-Graduação em Biologia Animal da Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil
C.L. Cruces
Affiliation:
Programa de Pós-Graduação em Biologia Animal da Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil
G.M. Sáez
Affiliation:
Laboratorio de Parasitología General y Especializada, Facultad de Ciencias Naturales y Matemática (FCCNM), Universidad Nacional Federico Villarreal (UNFV), Lima, Peru
A. Maldonado Júnior
Affiliation:
Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
J.L. Luque*
Affiliation:
Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil
*
Author for correspondence: J.L. Luque, E-mail: luqueufrrj@gmail.com
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Abstract

The present paper describes a new species of Dermadena (Digenea) parasitizing Pseudobalistes naufragium in Puerto Pizarro, northern Peru, using light and scanning electronic microscopy (SEM). Additionally, molecular analysis was also performed to determine the phylogenetic affinities of Dermadena within the Lepocreadiidae. The new species is differentiated from Dermadena spatiosa, Dermadena stirlingi and Dermadena lactophrysi by presenting a curved and well-developed external seminal vesicle. Also, SEM revealed numerous dome-shaped tegument protuberances forming glandular papillae with transversal wrinkles arranged roughly in concentric rows around the acetabular region, varying in size from large at the middle of the body to small at the margin. In the molecular phylogeny, the new species formed a well-supported clade with sequences of species from the Lepocreadiidae, confirming that it belongs to this family.

Keywords

fishPeruphylogenyscanning electron microscopytrematoda
Type
Research Paper
Information
Journal of Helminthology , Volume 96 , 2022 , e34
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press

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