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- Title
Stock Transfers in Spanish Brown Trout Populations: A Long-term Assessment.
- Authors
Izquierdo, Jorge I.; Castilloa, Ana G. F.; Ayllon, Fernando; de la Hoz, Jeronimo; Garcia-Vazquez, Eva
- Abstract
Stocking of fish from other populations has been commonly employed for enhancement of wild brown trout, Salmo trutta, populations in north Spain. Young hatchery reared brown trout of central European origin were introduced into some Asturian rivers every year since 1984. Based on variation at the isozyme locus LDH-C1* and at the microsatellite locus BFRO 002, two genetic markers race-specific in Salmo trutta, we detected introgression of foreign genomes into native gene pools in some Spanish trout populations where only pure native individuals were present 10 years ago. We strongly suggest development of alternative management policies for conservation of Spanish natural brown trout populations without endangering the traditional recreational fisheries.
- Subjects
SPAIN; BROWN trout; FISH stocking; FISH populations; HATCHERY fishes; MICROSATELLITE repeats; FISH genetics; FISH ecology; FISHING
- Publication
Environmental Biology of Fishes, 2006, Vol 75, Issue 2, p153
- ISSN
0378-1909
- Publication type
Article
- DOI
10.1007/s10641-005-5068-1