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Les facteurs determinant les activites de coassements des anoures de la ferme piscicole du Parc National du Banco ont ete etudies. Une prospection acoustique basee sur l\'enregistrement standardise des chants des grenouilles, a permis d\'inventorier, pendant quatre cycles nycthemeraux, 14 especes reparties en 8 genres et 4 familles. La familledes Hyperoliidae avec 7 especes est la plus diversifiee. Parmi les especes recensees, une seule (Phrynobatrachus accraensis), a son pic d\'activite a 6 heures. Son rythme d\'activite de chants est influence par la temperature de l\'air et l\'intensite lumineuse. Les Bufonidae, Hyperoliidae et Ranidae constituent une communaute aux moeurs nocturnes dont les pics de coassements se situent entre 21 heures et 24 heures. L\'humidite relative de l\'air conditionne leurs comportements. Par ailleurs, la majorite des especes a une forte activite de coassement en saison de pluies. Nos resultats qui sont parmi les premiers concernant les communautes d\'Anoures du Parc National du Banco, permettront d\'elaborer une strategie pour leur echantillonnage et leur protection. The factors determining the calling activities of anuran community in the Banco National Park fish farm have beenstudied. The standard acoustic encounter survey based on listening calling males permitted to inventory 14 species, 8 genera and 4 families, during four circadian cycles. The family of Hyperoliidae is diversified the most (7 species). Only one diurnal species (Phrynobatrachus accraensis) was observed, with a peak of activity at 6 hours. Its daily callingactivity is influenced by the temperature of the air and the light intensity. The Bufonidae, Hyperoliidae and Ranidae families are nocturnal community. Their peaks of activity varied between 21 hours and 24 hours. The relative humidity of the air determined the behavior of these families. In addition, most of the species have a strong calling activity duringthe rainy season. Our results should permit to elaborate a standard method for amphibians survey in the Park. Keywords : Calling activity, Temporal variation, Amphibian, Banco National Park, West Africa. Sciences & Nature Vol. 5 (1) 2008: pp. 71-79

Déterminisme des Coassements des Anoures de la ferme piscicole du Parc National du Banco (Côte d\'Ivoire)