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Artículo

Parasitological evidence of stocks of Paralichthys isosceles (Pleuronectiformes: Paralichthyidae) at small and large geographical scales in South American Atlantic coasts

Alarcos, Ana JuliaIcon ; Pereira, Aldenice N.; Taborda, Naraiana L.; Luque, José L.; Timi, Juan TomasIcon
Fecha de publicación: 01/2016
Editorial: Elsevier Science
Revista: Fisheries Research
ISSN: 0165-7836
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Three stocks of the flounder Paralichthys isosceles Jordan, 1861 were identified in the southwestern Atlantic by using their parasites as biological markers. Comparisons (pemutational multivariate analyses of variance and canonical analysis of principal coordinates) of 78 flounders caught simultaneously at two close localities in Brazil (Cabo Frio and Niteroi) and previously published data of 51 fish from Argentina (Necochea) allowed testing the value of parasite tags as discriminators at both small and large spatial scales. A total of 5925 metazoan parasites belonging to 17 species were found in Brazilian samples. Parasite assemblages varied across localities in terms of species richness and presence and abundance of individual species. Multivariate analyses of presence and abundance of long-lived parasites resulted in clear dissimilarity patterns across all samples. Significant differences were also observed when the entire parasite assemblages were compared between both Brazilian samples. The best discriminator species at both spatial scales were represented by unspecific parasites, broadly distributed among fish species in the region. These indicator species apparently display recurrent spatial patterns across host species, being therefore expected to serve as suitable tags for population studies of other resources. Parasites constitute valuable tools to be included in further holistic stock identification studies, which may eventually allow proactive mitigation and conservation strategies for many short scale artisanal fisheries in the southwestern Atlantic coasts, which are facing severe risks of overexploitation and collapse.
Palabras clave: Paralichthys Isosceles , Parasite Tags , Southwestern Atlantic , Stocks
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/62553
URL: https://www.sciencedirect.com/science/article/pii/S0165783615300278
DOI: https://dx.doi.org/10.1016/j.fishres.2015.07.018
Colecciones
Articulos(IIMYC)
Articulos de INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Citación
Alarcos, Ana Julia; Pereira, Aldenice N.; Taborda, Naraiana L.; Luque, José L.; Timi, Juan Tomas; Parasitological evidence of stocks of Paralichthys isosceles (Pleuronectiformes: Paralichthyidae) at small and large geographical scales in South American Atlantic coasts; Elsevier Science; Fisheries Research; 173; 1-2016; 221-228
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