Supervivencia en cautividad de distintos lotes de reproductores de trucha común autóctona aragonesa
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Date
2011
Authors
Mitjana Nerín, Olga MaríaClavero, J.L.
Alabart Alvarez, José Luis
Blasco Martínez, José María
Josa, A.
Espinosa, E.
Journal Title
Journal ISSN
Volume Title
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Typology
conferenceObjectAbstract
Native wild brown trout populations from several rivers in Aragon (Spain) have
been selected for artificial stocking in hatcheries. These genetically pure populations were
introduced in a hatchery in Planduviar (Huesca), in which exhaustive monitoring of
adaptation was performed. These native trouts died immediately after reproduction. The
subsequent derived native generations showed high mortality rates, most dying before 3
years, and never reaching five years of age. The high mortality was mostly associated to
stress derived handling during breeding season. In addition to the potential loss of essential
adaptative genes, these results seriously question the interest of maintaining native brown
trout lines for artificial stocking
Description
Keywords
Brown trout, Adaptation to captivity, Survival
Bibliographic citation
Mitjana, O., Clavero, J.L., Alabart, J.L., Blasco, J.M., Josa, A., Espinosa, E. “Supervivencia en cautividad de distintos lotes de reproductores de trucha común autóctona aragonesa”. En: 41 Jornadas de Estudio. XIV Jornadas sobre Producción Animal. AIDA. Zaragoza, España, 17 y 18 de mayo de 2011, pp. 127-129. ISBN: 978-84-615-0062-8
Other field subjects
TruchaAcuicultura
Producción y sanidad animal