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.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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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)
- Urheber
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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
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:28 MESZ
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Beteiligte
- Závorka, Libor
- Slavík, Ondřej
- Horký, Pavel
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Seawater tolerance and morphological assessment of yearling sea trout (Salmo trutta L.)
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Fine stream wood decreases growth of juvenile brown trout (Salmo trutta L.)
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Effect of two insect meals on the gut commensal microbiome of healthy sea trout (Salmo trutta vr. trutta)
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