Growth, survival and interspecific social learning in the first hatchery generation of Eurasian perch (Perca fluviatilis)
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- 作者：Laura Hä ; rkö ; nena ; b ; laura.harkonen@oulu.fi" class="auth_mail" title="E-mail the corresponding author ; Pekka Hyvä ; rinenc ; Lauri Mehtä ; talod ; Anssi Vainikkaa
- 关键词：Bimodality ; Feed training ; Gaussian mixture model ; Hatchery-induced selection ; Interspecific social learning ; Size heterogeneity
- 刊名：Aquaculture
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：466
- 期：Complete
- 页码：64-71
- 全文大小：502 K
文摘
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This study sheds light on the challenges associated with hatchery-induced selection operating on wild fish in aquaculture.
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Social learning from brown trout tutors did not improve the survival or growth of tank-naïve Eurasian perch.
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The total biomass gain was substantially improved by supplementing a dry-feed diet with minced prey fish.
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Gaussian mixture modelling is introduced as a statistical tool to analyse growth heterogeneity in aquaculture.