The effect of water temperature on the number of moults and growth of juvenile noble crayfish, Astacus astacus (Linnaeus)

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The effect of water temperature on the number of moults and growth of juvenile noble crayfish, Astacus astacus (Linnaeus)

Popis výsledku v původním jazyce

The growth rate, frequency of moulting, and intermoult intervals of juvenile Astacus astacus were investigated under experimental conditions. Juveniles were reared individually for a period of 3 months in small boxes at two different temperatures: 14.31+- 0.62°C (cold water) and 20.49 +- 0.73°C (warm water). All intermoult periods of juveniles were significantly longer in cold than warm water. In total, three moults were observed in cold and five in warm water. Furthermore, a higher water temperature can affect moult increment. The specific growth rate (SGR) tended to decrease with every other stage, from 5.1 and 10.5% day-10 for cold and warm water, respectively, to reach values of 1.5 and 1.7% day-1, respectively, after 3 months. SGR values showed negative correlations with number of moults, age and weight. The impact of different temperatures on growth parameters of crayfish is discussed.

Název v anglickém jazyce

The effect of water temperature on the number of moults and growth of juvenile noble crayfish, Astacus astacus (Linnaeus)

Popis výsledku anglicky

The growth rate, frequency of moulting, and intermoult intervals of juvenile Astacus astacus were investigated under experimental conditions. Juveniles were reared individually for a period of 3 months in small boxes at two different temperatures: 14.31+- 0.62°C (cold water) and 20.49 +- 0.73°C (warm water). All intermoult periods of juveniles were significantly longer in cold than warm water. In total, three moults were observed in cold and five in warm water. Furthermore, a higher water temperature can affect moult increment. The specific growth rate (SGR) tended to decrease with every other stage, from 5.1 and 10.5% day-10 for cold and warm water, respectively, to reach values of 1.5 and 1.7% day-1, respectively, after 3 months. SGR values showed negative correlations with number of moults, age and weight. The impact of different temperatures on growth parameters of crayfish is discussed.

Druh

D - Stať ve sborníku

CEP obor

GL - Rybářství

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Freshwater Crayfish

ISBN

978-951-27-1322-6

ISSN

2076-4324

e-ISSN

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Počet stran výsledku

5

Strana od-do

37-41

Název nakladatele

International Association of Astacology

Místo vydání

Kuopio; Finland

Místo konání akce

Kuopio; Finland

Datum konání akce

4. 8. 2008

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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