Validation of scale-reading estimates of age and growth in a brown trout Salmo trutta population
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10281141" target="_blank" >RIV/00216208:11310/14:10281141 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/60460709:41210/14:64339 RIV/00020711:_____/14:00003932
Výsledek na webu
<a href="http://dx.doi.org/10.2478/s11756-014-0356-x" target="_blank" >http://dx.doi.org/10.2478/s11756-014-0356-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2478/s11756-014-0356-x" target="_blank" >10.2478/s11756-014-0356-x</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Validation of scale-reading estimates of age and growth in a brown trout Salmo trutta population
Popis výsledku v původním jazyce
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 fromscale 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.
Název v anglickém jazyce
Validation of scale-reading estimates of age and growth in a brown trout Salmo trutta population
Popis výsledku anglicky
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 fromscale 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.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
EH - Ekologie – společenstva
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Biologia
ISSN
0006-3088
e-ISSN
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Svazek periodika
69
Číslo periodika v rámci svazku
5
Stát vydavatele periodika
SK - Slovenská republika
Počet stran výsledku
5
Strana od-do
691-695
Kód UT WoS článku
000335661200016
EID výsledku v databázi Scopus
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