ArticleAnimal cognition2022
Impact of environmental complexity and stocking density on affective states of rainbow trout (Oncorhynchus mykiss).
Article in Animal cognition, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Heads and tails of individual differences: the role of environmental complexity in cognitive development of juvenile lobsters.Animal cognition · 2026Article
- Differential captivity and experiential conditions and its impact on the behaviour and cognition of Picasso triggerfish (Rhinecanthus aculeatus).Animal cognition · 2026Article
- Insights from the judgement bias paradigm: social group and tank size do not affect mental state in female guppies.Journal of fish biology · 2025Article
- Fish Welfare in Public Aquariums and Zoological Collections.Animals : an open access journal from MDPI · 2023Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Environmental condition, such as environmental complexity or stocking density, can directly or indirectly influence animal emotion and ultimately, affective state. Affective states of animals can be assessed through judgement bias tests, evaluating responses to ambiguous situations. In this study, we aimed to determine whether environmental complexity and stocking density impacted rainbow trout affective state. Rainbow trout (n = 108) were housed in recirculating aquaculture systems under commercial conditions while trained at tank-level to discriminate between a positively reinforced chamber (feed) in one location and a negative chamber (positive punishment; chase by net for 1 s) in the opposing location. Fish from successful tanks (two out of five tanks) were then housed in treatment tanks of either high- or low- environmental complexity at either high (165 fish/m
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Registered trials
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