Data/hora: 11/06/2024 07:58:34

Provedor de dados: | 5
País: | France
Título: | Elevage de copepodes harpacticoïdes (Tisbe holothuriae) en cycle complet. Rôle des facteurs température et nutrition
Autores: | Gaudy, R.; Guerin, J.p.
Data: | 1979
Ano: | 1979
Palavras-chave: | Production; Dynamique des populations; Biomasse; Composition chimique élémentaire; Bilan énergétique; Copépodes harparcticoïdes; Production; Population dynamic; Biomass; Chemical elementary composition; Energy balance; Hapacticoïd copepods.
Resumo: | Following are results obtained in our laboratory during breeding expe­riments with an harpacticoid copepod, Tisbe holothuriae. In small size volumes (200 ml), the potential production appears to be higher when an artificial compound food of animal substances is used instead of a vegetal diet. In medium volume experiments (100 l) the production is related to the surface available for animals in breeding tanks, Breeding in complete cycles can be obtained using various foods, but the quality of diet may markedly affect the characteristics of the vital cycle, such as the length of the fertility period and fecundity. Temperature has a cru­cial effect, chiefly on dynamic preoccesses, that is to say, developmental rate and average generation time. With different qualities of diet used, adults obtained may show signi­ficant differences in weight and elementary chemical composition. In a study of the energy balance, gross-growth and net-growth efficiency rates are calculated. The increase of temperature has a significant action on the values obtained, particularly between 14 and 19° C. These results allow us to project new mass production experiments under optimal conditions, with a special emphasis on : - The increase of surface-volume ratio in breeding tanks ; - A quantitatively and qualitatively adapted food supply ; - An increase in the yield rate of the biomass, in agreement with the maximum ' production capacity of the populations.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00306/41672/40881.pdf

http://archimer.ifremer.fr/doc/00306/41672/

Editor: | Publications du Centre National pour l'Exploitation des Océans (CNEXO). Série : Actes de colloques, n° 7, 1979, pp. 377-390
Formato: | application/pdf

Fonte:

Centre National pour l’Exploitation des Océan, 1979

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