Validation of scale-reading estimates of age and growth in a brown trout Salmo trutta population
Abstract: In this study, we validated a scale-reading method estimating age and growth in brown trout Salmo trutta in wild, landlocked, stream-dwelling populations from mountain headwaters in the Elbe catchment area of the Czech Republic. The values estimated from scale reading were compared with measured values, collected using a mark-recapture program over eight consecutive years. The age-corrected absolute percentage error was 10.71%, primarily because the ages of the oldest individuals according to scale reading were underestimated, and the ages of juvenile individuals were slightly overestimated. The back-calculated length was slightly underestimated (the mean error was −4.60 mm), but it was not significantly different from the real measured length. This study suggests that in cold mountain headwaters, scale reading is a sufficiently accurate method for age and growth estimation in juvenile brown trout; however, the results for adult individuals must be taken with caution.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Validation of scale-reading estimates of age and growth in a brown trout Salmo trutta population ; volume:69 ; number:5 ; year:2014 ; pages:691-695 ; extent:5
Biologia ; 69, Heft 5 (2014), 691-695 (gesamt 5)
- Creator
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Závorka, Libor
Slavík, Ondřej
Horký, Pavel
- DOI
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10.2478/s11756-014-0356-x
- URN
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urn:nbn:de:101:1-2409231622383.381075370534
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:28 AM CEST
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Associated
- Závorka, Libor
- Slavík, Ondřej
- Horký, Pavel
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Microsatellite markers and management of brown trout Salmo trutta fario populations in southwestern France
Genetic diversity and phylogenetic origin of brown trout Salmo trutta populations in eastern Balkans
State-dependent behavior and alternative behavioral strategies in brown trout (Salmo trutta L.) fry
Fine stream wood decreases growth of juvenile brown trout (Salmo trutta L.)
Seawater tolerance and morphological assessment of yearling sea trout (Salmo trutta L.)
Distribution of intraperitoneally injected diclofenac in brown trout (Salmo trutta f. fario)
Fische. Forellen (Salmo trutta)
Effect of two insect meals on the gut commensal microbiome of healthy sea trout (Salmo trutta vr. trutta)
Behaviour of anadromous brown trout (Salmo trutta) in a hydropower regulated freshwater system
Could mycotoxigenic Fusarium sp. play a role in ulcerative dermal necrosis (UDN) of brown trout (Salmo trutta morpha trutta)?
Pike (Esox lucius) stock management in designated brown trout (Salmo trutta) fisheries: Anglers' preferences
Transcriptome profiling of posterior kidney of brown trout, Salmo trutta, during proliferative kidney disease
Microsatellite markers and management of brown trout Salmo trutta fario populations in southwestern France
Genetic diversity and phylogenetic origin of brown trout Salmo trutta populations in eastern Balkans