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Title

Identification of subpopulations in pelagic marine fish species using amino acid composition

AuthorsManeiro, I.; Vergara, Alba Ruth
KeywordsFish population
Fisheries management
Fish stock
Pelagic species
Issue Date2011
PublisherSpringer
CitationHydrobiologia 670: 189–199 (2011)
AbstractThe spatial stock complexity of marine fish species requires that population structure is taken into account in fisheries management. The aim of this study was to determine whether the amino acid composition (AAC) of the adult fish allows the identification of subpopulations within the stock. During a cruise in November 2003 along the entire Mediterranean coast of Spain, individuals were collected of the following pelagic species: Sardina pilchardus, Sardinella aurita, Engraulis encrasicolus, Trachurus trachurus, Trachurus mediterraneus, Scomber scombrus and Scomber colias. Individuals of S. pilchardus and E. encrasicolus were also collected from the waters of the Strait of Sicily in 2002 and 2003. The AAC of the fish eyes was seen to be species specific, and therefore, the differences in AAC among species may be based on inherited characters. Moreover, a clear differentiation was seen between the Spanish and Sicilian populations of S. pilchardus and E. encrasicolus. Furthermore, in the Spanish waters of the Mediterranean Sea, discriminant analysis revealed a substantial separation between the northern and southern subpopulations of S. pilchardus, S. aurita and E. encrasicolus. Temporal variations in AAC within species in each area were lower than the spatial variations observed
Description14 páginas, 4 tablas, 4 figuras.-- I. Maneiro ... et al.-- The final publication is available at www.springerlink.com
Publisher version (URL)http://dx.doi.org/10.1007/s10750-011-0663-y
URIhttp://hdl.handle.net/10261/35588
DOI10.1007/s10750-011-0663-y
E-ISSN1573-5117
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