Influence de quelques facteurs de l'environnement sur la fonction de reproduction chez les poissons

Climate, photoperiod and temperature directly influence reproduction as does food availability which is an indirect effect. The effects of photoperiodism are more varied than those of temperature but long-term thermal variations also influence reproduction. Some parameters of the aquatic medium, such as pH, O sub(2), water salinity, social environment, are also important, affecting gametogenesis and fertility. Man represents the main environmental influence having a direct (domestication, manipulation) or indirect effect by profoundly changing the medium (pollution). The various environmental factors, interacting with endogenous parameters, depend on the physiology and health of the animal at a given time of the year or the day and on the degree of domestication.

Auteurs du document :

Billard, Roland, Gillet, Christian

Mots clés :

fish;environmental factors;photoperiod, poisson, environnement social, reproduction, alimentation, température, facteur environnemental, facteur externe, polluant, maladie, photopériode, végétation aquatique, qualité de l'eau, manipulation de l'animal

Date :

1984

Format :

text/xml

Source :

Cahiers du Laboratoire d'Hydrobiologie de Montereau (15), 45-54. (1984)

Langue :

Inconnu

Droits d'utilisation :

https://creativecommons.org/licenses/by-sa/3.0/