The effect of timing of extended photoperiod on growth and maturity of brook trout (Salvelinus fontinalis)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F19%3A43899091" target="_blank" >RIV/60076658:12520/19:43899091 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/full/10.1111/are.14053" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1111/are.14053</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/are.14053" target="_blank" >10.1111/are.14053</a>

Result language
angličtina
Original language name
The effect of timing of extended photoperiod on growth and maturity of brook trout (Salvelinus fontinalis)
Original language description
The influence of timing of extended photoperiods on growth and maturity of brook trout was investigated in a 112-day experiment. The fish with mean initial weight of similar to 192 g were reared under four light regimes: one control group with natural ambient photoperiod and three groups exposed to an 18L:6D regime initiated at days 1, 23 or 46 of the growth trial. Light-emitting diodes, with intensity of 250-1000 lux, depending on the distance from the light source, were used for extending light periods. There was a positive effect of prolonged day length on fish growth (p < 0.05), and a delay in gonad development and sexual maturity. Significantly higher numbers of sexually mature fish were found among controls groups, regardless of sex. Survival rate was not affected by light regime. This study demonstrated that the short-term expansion of the photo period delayed maturation and increased the growth rate of brook trout.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40103 - Fishery

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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