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Broodstock management of pikeperch (Sander lucioperca) and it's effect on eggs and larval production
Malinovskyi, Oleksandr, 1992- - Autor diplomové práce nebo disertace
91 stran : ilustrace ; 24 cm
ISBN 978-80-7514-091-3
candát obecný chov ryb rozmnožování ryb obchod s rybami
disertace tezeSignatura C 396.811 Umístění Údaje o názvu Broodstock management of pikeperch (Sander lucioperca) and it's effect on eggs and larval production = Management generačních ryb candáta obecného (Sander lucioperca) a jeho vliv na produkce jiker a larev / Oleksandr Malinovskyi Souběž.n. Management generačních ryb candáta obecného (Sander lucioperca) a jeho vliv na produkce jiker a larev Záhlaví-jméno Malinovskyi, Oleksandr, 1992- (Autor diplomové práce nebo disertace) Nakladatel Vodňany : Fakulta rybářství a ochrany vod, Jihočeská univerzita v Českých Budějovicích, 2019 Fyz.popis 91 stran : ilustrace ; 24 cm ISBN 978-80-7514-091-3 Číslo nár. bibl. cnb003255208 Poznámky o skryté bibliografii a rejstřících Obsahuje bibliografie a bibliografické odkazy Jazyková pozn. České a anglické resumé Dal.odpovědnost Jihočeská univerzita. Fakulta rybářství a ochrany vod (Nakladatel, vydavatel)
Předmět.hesla candát obecný * chov ryb * rozmnožování ryb * obchod s rybami Forma, žánr disertace * teze Konspekt 639.2/.6 - Rybářství MDT 597.556.331.1 , 639.3 , 639.3.03 , 339.166:639.21/.22 , (043.3) , (048.3) Země vyd. Česko Jazyk dok. angličtina Druh dok. KNIHY "This thesis provides an improve to existing reproduction technics through investigation of ecology and physiology features of pikeperch broodstock: (I) Spawning behavior and selectivity to different types of spawning substrates as an important part of the biology of pikeperch species. The main output of the study was revealing of strong selectivity to the spawning site with neither water temperature nor availability of spawning places haven't affected substrate preference of pikeperch broodstock. (II) Spawning in captivity is leads to decrease in physiological status of the pikeperch broodstock, especially in females. It was found that one of the reasons of the decrease was male protective behavior, that in limited space of the reproduction unit is forwarded to female. Separation of the sexes significantly reduces number injuries and improved physiological status of the broodstock. (Ill) The study investigated efficiency of different antifungal agents for pikeperch broodstock. The long term exposure to salt bath in concentration of 2.5, 5 and 10 g L-1 and formaldehyde in concentration 0.015 ml L-1 were found to be highly effective and significantly decreased mortality after spawning. In addition, treatment with salt bath are environmentally friendly and recommended for practical use as an effective way to prevent mortality of pond-cultured pikeperch broodstock. (lV) The provision of live feed is crucially important for proper gametes maturation, particularly in pond-cultured fishes not accepting pellets. The study investigated the effect of temperature on daily biomass of prey consumed by pikeperch broodstock. Significantly increased prey consumption was found after temperature reached 4.5 °C. Females exhibited significantly higher prey consumption rate in compare to male. Study revealed the tendency for pikeperch to consume largest available prey after water temperature reached 8.5 °C." In MALINOVSKYI, Oleksandr. Broodstock management of pikeperch (Sander lucioperca) and it's effect on eggs and larval production =: Management generačních ryb candáta obecného (Sander lucioperca) a jeho vliv na produkce jiker a larev. Vodňany: Fakulta rybářství a ochrany vod, Jihočeská univerzita v Českých Budějovicích, 2019. 91 stran. ISBN 978-80-7514-091-3. Zdroj anotace: OKCZ - ANOTACE Z WEBUNačítání…
Počet záznamů: 1