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Suboptimal growth among individuals of brown trout (Salmo trutta) in a temperate river |
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| Authors: | Javier Sánchez-Hernández Fernando Cobo |
| Affiliation: | 1. Departamento de Zooloxía, Xenética e Antropoloxía Física, Facultade de Bioloxía, Universidade de Santiago de Compostela, Santiago de Compostela, Spain;2. Departamento de Zooloxía, Xenética e Antropoloxía Física, Facultade de Bioloxía, Universidade de Santiago de Compostela, Santiago de Compostela, Spain Estación de Hidrobioloxía ‘Encoro do Con’, Universidade de Santiago de Compostela, Vilagarcía de Arousa, Spain |
| Abstract: | This study assessed growth of individually tagged brown trout Salmo trutta in a temperate system of north-west Spain (2010–2012). This study identified notable individual variation in fish growth with individuals growing sub-optimally compared with laboratory-based growth-model predictions in most cases (85.5% of individuals). The present observations of suboptimal growth need to be considered in view of intraspecific competition or limiting food resources instead of thermal regimes. |
| Keywords: | intraspecific competition maximum potential growth Salmo trutta tag recapture water temperature |