Comparison of Reproduction Characteristics and Broodstock Mortality in Farmed and Wild Eurasian Perch (Perca fluviatilis L.) Females During Spawning Season Under Controlled Conditions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F12%3A43883441" target="_blank" >RIV/60076658:12520/12:43883441 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4194/1303-2712-v12_2_01" target="_blank" >http://dx.doi.org/10.4194/1303-2712-v12_2_01</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4194/1303-2712-v12_2_01" target="_blank" >10.4194/1303-2712-v12_2_01</a>

Result language
angličtina
Original language name
Comparison of Reproduction Characteristics and Broodstock Mortality in Farmed and Wild Eurasian Perch (Perca fluviatilis L.) Females During Spawning Season Under Controlled Conditions
Original language description
Reproduction characteristics and broodstock mortality were compared in farmed perch (FP) and wild perch (WP) under controlled conditions. Thirty-six farmed females (FF) (92.3%) and 30 wild females (WF) (76.9%) spawned during the reproductive season. Absolute fecundity in FF was 18,660 +/- 6,809 eggs per female compared to 31,081 +/- 3,276 eggs per female in WF. Similar differences were observed in relative fecundity (FF 112,470 +/- 13,370 eggs per kg body weight and WF 137,054 +/- 18,513 eggs per kg body weight). No significant differences in fertilization rate (FR), larval resistance (LR) and larval total length (LTL) were found (FR - 91.9 +/- 6.9% and 90.5 +/- 6%; LR - 51.1 +/- 25.2% and 53.5 +/- 26.2%; LTL - 5.88 +/- 0.55 mm and 5.82 +/- 0.51 mm inFP and WP, respectively). The highest differences were found in hatching rates of 27.9 +/- 9.3% in FP and 62.0 +/- 16.0% in WP. No mortalities were observed during the reproductive season, but post-spawning mortality among WP was 92.5 +/-
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GL - Fishery
OECD FORD branch
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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)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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