
handle: 10261/81018
[FR] Les variations du contenu stomacal de 2 espèces de Palaemonidae sont étudiées pondant une année. Les femelles présentent des estomacs plus remplis que les mâles bien que, en fin de maturation ovarienne, leurs estomacs soient pratiquement vides. Les proies dominantes pour les deux sexes pendant toute l'année sont les Amphipodes. A celles-ci s'ajoutent des Polychètes, des Mollusques et des larves d'Insectes : on trouve également dans les estomacs des fragments d'algues, du sable et un pourcentage non négligeable (25 p. 100) de matière organique non identifiée. L'importance relative des différentes proies est très semblable chez les deux espèces étudiées. Toutefois, leur aire de distribution étant différente, aucune compétition trophique n'est possible si ce n'est aux frontières de leurs habitats respectifs.
[EN] Variation in fullness of stomachs of two Palacmonid species was studied throughout the year. Stomachs of females were more full than those of males but the stomachs of females were empty as ovaries get matured. Amphipods were the major food item in stomach of both sexes of both species throughout the year. Other components of stomach content were: Polycnaetes, Molluscs, Insect larvae, algae sand and un-identified organic matter. The relative importance of each prey was very similar in both species. As the distribution area of the two studied species was different, a trophic compétition could not occur re except on the boundaries of their specific habitat.
14 páginas, 2 tablas, 4 figuras
Peer reviewed
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