Vliv vnitro- a mezidruhové konkurence na přežití a růst původního raka říčního Astacus astacus a nepůvodního raka pruhovaného Orconectes limosus

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12610%2F07%3A00007812" target="_blank" >RIV/60076658:12610/07:00007812 - isvavai.cz</a>

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 inter- and intra-specific competition on survival and growth rate of native juvenile noble crayfish Astacus astacus and alien spiny-cheek crayfish Orconectes limosus

Popis výsledku v původním jazyce

Juvenile noble crayfish, Astacus astacus and spiny-cheek crayfish, Orconectes limosus were reared from the 2nd and the 3rd developmental stage (i.e. since the stage of independence), respectively, until the end of the growing season. The first period revealed very low survival rate of O. limosus in the communal stock (7+/-6.2%), probably caused by predation of A. astacus. Separately reared O. limosus proved significantly higher survival rate (49+/-9.2%) than those in the communal stock with A. astacus.The latter species also showed the highest survival rate in this case (90+/-7.1%). This was not found to differ from the survival rate of separately reared noble crayfish (86+/-3.1%). In general, both the significant effect of bigger size of A. astacus than that of O. limosus and higher intra-specific cannibalism of O. limosus were reflected during the first phase of rearing. Size and weight of both species were equivalent 11 weeks after hatching (8 weeks of rearing). The higher cumulati

Název v anglickém jazyce

The effect of inter- and intra-specific competition on survival and growth rate of native juvenile noble crayfish Astacus astacus and alien spiny-cheek crayfish Orconectes limosus

Popis výsledku anglicky

Juvenile noble crayfish, Astacus astacus and spiny-cheek crayfish, Orconectes limosus were reared from the 2nd and the 3rd developmental stage (i.e. since the stage of independence), respectively, until the end of the growing season. The first period revealed very low survival rate of O. limosus in the communal stock (7+/-6.2%), probably caused by predation of A. astacus. Separately reared O. limosus proved significantly higher survival rate (49+/-9.2%) than those in the communal stock with A. astacus.The latter species also showed the highest survival rate in this case (90+/-7.1%). This was not found to differ from the survival rate of separately reared noble crayfish (86+/-3.1%). In general, both the significant effect of bigger size of A. astacus than that of O. limosus and higher intra-specific cannibalism of O. limosus were reflected during the first phase of rearing. Size and weight of both species were equivalent 11 weeks after hatching (8 weeks of rearing). The higher cumulati

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

Hydrobiologia

ISSN

0018-8158

e-ISSN

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Svazek periodika

590

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

85-94

Kód UT WoS článku

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EID výsledku v databázi Scopus

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