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Stratégies démographiques des poissons des rivières françaises : premiers résultats

Abstract : The analysis of the biological, morphological and food characteristics of 35 French species leads to distinguish two main strategies. The first one gathers 11 species with a short life span and which maximize the survival of juveniles. Within it, cold water species with a long reproduction lifetime and thermophilous species with a relatively stronger fertility can be distinguished. Their diets are essentially made of insects- plankton and insects-fishes. In the second group, no care is given to juveniles; relative fertilities are higher and inversely correlated to the number of reproduction cycles. 10 species are omnivorous with a grass-wastes tendancy, and 4 species eat strictly fishes. The canonical analysis of correspondances shows that these biological characteristics are sufficuent to understand most of the longitudinal zonation.
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Didier Pont, J. Allardi, Jérôme Belliard, Philippe Boët, G. Carrel, et al.. Stratégies démographiques des poissons des rivières françaises : premiers résultats. Bulletin Francais De La Peche Et De La Pisciculture, 1995, pp.113-119. ⟨10.1051/kmae:1995013⟩. ⟨hal-02576563⟩



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