The use of parasites as biological tags for stock identification of blue jack mackerel, Trachurus picturatus, in the North-eastern Atlantic

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Vasconcelos, J (Author) Other; Hermida, M (Author) Other; Saraiva, A (Author) FCUP; Gonzalez, JA (Author) Other; Gordo, LS (Author) Other

Journal

Title: Fisheries Research

Vol. 193

Pages: 1-6

ISSN: 0165-7836

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 19 Citations

Other information

Authenticus ID: P-00M-KJZ

DOI: 10.1016/j.fishres.2017.03.015

Abstract (EN): The use of parasites as biological tags for discriminating stocks of blue jack mackerel, Trachurus picturatus (Osteichthyes, Carangidae), in the northeast Atlantic Ocean is assessed herein. In this study the following parasites have been selected as possible biological tags: Anisakis spp. (Nematoda: Anisakidae), Rhadinorhynchus sp. (Acanthocephala: Rhadinorhynchidae), Nybelinia sp. (Cestoda: Tentaculariidae) and Bolbosoma sp. (Acanthocephala: Polymorphidae). Anisakis spp. was the most prevalent parasite taxon found in all localities, attaining higher values in fish from Peniche, mainland Portugal. The occurrence of Rhadinorhynchus sp. in fish from all studied areas was rare (prevalence <10%) but significantly different between localities, with higher values in both archipelagos. Nybelinia sp. specimens were only detected in fish from Madeira and cystacanths of the genus Bolbosoma were never detected. The distinctive pattern of infection of these parasite species points to the existence of three stocks of blue jack mackerel in the northeast Atlantic: one in Portuguese mainland waters, one in Madeira archipelago and another in the Canary archipelago. These results support the management strategy which treats the three populations studied as separate stocks.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6