2018
DOI: 10.1111/jfb.13657
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The effect of rearing structures on behaviour and movement of juvenile steelhead Oncorhynchus mykiss

Abstract: The relative movement of juvenile steelhead Oncorhynchus mykiss reared on two treatments was investigated to provide insight on the effect of structure in the rearing environment on the behaviour of the fish before potential release into a natural river system. The progeny of wild broodstock were reared either in the presence or absence of structure in the tank environment for 7 months at the Oregon Hatchery Research Center located in Oregon, U.S.A. Behavioural assessments, including movement response to a sim… Show more

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Cited by 8 publications
(7 citation statements)
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“…Physical enrichment has been intensively studied. Investigators have placed a variety of structures in rearing tanks, including tree roots [2], woody debris [2] [5] [6] [7] [8], rocks and concrete blocks [8]- [14], and imitation aquatic plants [20]. However, most of these structural enhancements are incompatible with production-level hatchery rearing because they interfere with tank hydraulic self-cleaning, subsequently increasing labor demands and creating conditions favorable for disease outbreaks [14] [21] [22].…”
Section: Introductionmentioning
confidence: 99%
“…Physical enrichment has been intensively studied. Investigators have placed a variety of structures in rearing tanks, including tree roots [2], woody debris [2] [5] [6] [7] [8], rocks and concrete blocks [8]- [14], and imitation aquatic plants [20]. However, most of these structural enhancements are incompatible with production-level hatchery rearing because they interfere with tank hydraulic self-cleaning, subsequently increasing labor demands and creating conditions favorable for disease outbreaks [14] [21] [22].…”
Section: Introductionmentioning
confidence: 99%
“…Considerable attention has focused on physical and occupational enrichment. [20] [21]. However, these physical environmental techniques are largely incompatible with production-level hatchery rearing because they impede tank hydraulic self-cleaning.…”
Section: Introductionmentioning
confidence: 99%
“…Foraging-related behaviors have been indicated to change in some studies, but results include both positive (Brown et al 2003a, Beck and Rooker 2008, Rodewald et al 2011, Ullah et al 2017, Brignon et al 2018) and negative effects (Moberg et al 2011, Rae et al 2020. Some studies show no detectable differences in foraging between enriched and standard-reared animals (Carrera-García and Rochard 2016, Self et al 2018, Hatanpää et al 2020. Differences in results may depend on a variety of factors, like species autecology (comparative studies are unfortunately lacking), which context an animal is tested in (e.g., threatening or benign contexts, warm or cold water, etc.…”
Section: Social Transfermentioning
confidence: 99%