A. M. PENDAS, P. MORAN, J. L. MARTINEZ and E. GARCIA-VAZQUEZ Departamento de Biologih Funcional, Arm de Genkticn, Facultad de Medicina, Unionsidnd de Ooiedo, 33006 Ooiedo, Spain The members of the salmonid family form perhaps the most economically important group of the worldâs fish species. In Europe the most important species employed in fish farming are the introduced rainbow trout (Oncorhynchus mykiss) and the Atlantic salmon (Salmo salnr), whereas interest in the brown trout (Salmo trufta)is based on its ecological diversity and sport fishing. These two Salmo species are very difficult to distinguish using morphological characters, not only during their first months of life (eggs and alevins) but also at the returning adult stage. Isoenzyme genetic analysis, which has usually been used for their identification, has often demonstrated that anglers have confused adults of brown trout with Atlantic salmon, or with salmon x trout hybrids (Leaniz & Verspoor 1989). Caution must therefore be taken in enhancement programmes since the artificial spawning of adults caught in the river could lead to restocking with salmon x trout hybrids. Another area of interest is the identification of manufactured products of these species (i.e. smoked). Genetic analysis potentially provides the only reliable
Molecular Ecology – Wiley
Published: Apr 1, 1995
Keywords: ; ; ;
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