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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/5314

Título: Is supplemental stocking of brown trout (Salmo trutta) worthwhile in low productive streams?
Autor: Cortes, R.
Teixeira, Amílcar
Pereira, C.
Palavras-chave: Stocking
Brown trout
Impact
Fish management
Issue Date: 1996
Citação: Cortes R.M.V.; Teixeira A.; Pereira C. (1996) - Is supplemental stocking of brown trout (Salmo trutta) worthwhile in low productive streams? Folia Zoologica. ISSN 0139-7893. 45:4, p. 371-381
Resumo: The effect of trout stocking was evaluated in two headstreams located in northern Portugal in order to assess the impact on wild trout (Salmo trutta L.) and to analyze the success of this operation. The results obtained exhibited the limitation of stocking: 1) the clumped character of the release fishes created a high mortality and limited the increasing of salmonid population to a few weeks; 2) because density-dependent factors seem to prevail in the regulation of salmonid populations, stocking is beneficial only if a population has became scarce, otherwise, the autochthonous fish may be strongly impacted; 3) the relative vulnerability of each age class of the native trout may vary according with the site.
Arbitragem científica: yes
URI: http://hdl.handle.net/10198/5314
Appears in Collections:ARN - Artigos em Revistas Indexados ao ISI/Scopus

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