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Communities of metazoan parasites in seven sympatric skate species (Elasmobranchii, Rajidae) from the English Channel and Celtic Sea differing in conservation status.
Gérard, Claudia; Trochard, Caroline; Hervé, Maxime R; Hamel, Héloïse; Gay, Mélanie; Barbier, Michel; Trancart, Thomas; Barreau, Thomas.
Afiliación
  • Gérard C; CNRS, ECOBIO (Ecosystèmes, biodiversité, évolution)-UMR 6553, University of Rennes, Rennes, France.
  • Trochard C; IGEPP, INRAE, Institut Agro, University of Rennes, Rennes, France.
  • Hervé MR; IGEPP, INRAE, Institut Agro, University of Rennes, Rennes, France.
  • Hamel H; UMR BOREA, Muséum National d'Histoire Naturelle, Service des Stations Marines, Station Marine de Dinard (CRESCO), Dinard, France.
  • Gay M; French Agency for Food, Environmental and Occupational Health and Safety (Anses), Laboratory for Food Safety, Boulogne-sur-Mer, France.
  • Barbier M; French Agency for Food, Environmental and Occupational Health and Safety (Anses), Laboratory for Food Safety, Boulogne-sur-Mer, France.
  • Trancart T; UMR BOREA, Muséum National d'Histoire Naturelle, Service des Stations Marines, Station Marine de Dinard (CRESCO), Dinard, France.
  • Barreau T; UMR BOREA, Muséum National d'Histoire Naturelle, Service des Stations Marines, Station Marine de Dinard (CRESCO), Dinard, France.
J Fish Biol ; 2024 Jun 27.
Article en En | MEDLINE | ID: mdl-38937946
ABSTRACT
Elasmobranch populations are in steep decline mainly due to overfishing bycatch, but parasites may accelerate the collapse of vulnerable and/or highly parasitized species. We therefore studied metazoan parasites of Rajidae from the northeast Atlantic vulnerable Leucoraja fullonica, near-threatened Raja brachyura, Raja clavata, Raja microocellata and Raja undulata, and least-concerned Raja montagui and Leucoraja naevus. Overall prevalence varied from 19% for R. montagui to 100% for L. fullonica. Parasite communities differed between skate species, and prevalence and abundance were higher for L. fullonica, R. microocellata, and R. undulata. We recorded 11 parasite taxa in the study three nematodes, six cestodes, one monogenean, and one myxosporean. Whatever the skate species, the parasite component community comprised at least two nematode taxa among Phocanema spp., Proleptus sp. and Anisakis simplex. DNA-sequencing revealed that Phocanema azarasi and Phocanema krabbei both occurred in R. microocellata and R. undulata. Phocanema spp. was first recorded in L. fullonica, L. naevus, R. microocellata, R. montagui, and R. undulata, as Proleptus sp. in L. fullonica, and A. simplex in L. fullonica and R. clavata, Rockacestus sp. and Nybelinia sp. in R. undulata, and gill-myxosporeans on L. fullonica, L. naevus, R. microocellata, and R. undulata. The occurrence of 16 new host-parasite associations suggests potential environmental changes. Information provided by trophically transmitted helminths confirmed an opportunistic skate diet based on crustaceans and fish. We discuss results in terms of host fitness loss, bioindicator role of parasites, and anisakiasis risk. We recommend incorporating parasitology in research to improve elasmobranch conservation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Fish Biol Año: 2024 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Fish Biol Año: 2024 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Reino Unido