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DIFFERENCES IN OXYGEN CONSUMPTION, REPRODUCTION, FEEDING, AND GROWTH OF THE FRESHWATER CYCLOPOID COPEPOD CYCLOPS VICINUS (ULJANIN, 1875), INFECTED WITH A CESTODA PROCERCOID

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[Differences in body size and oxygen consumption were found between uninfected individuals of the freshwater cyclopoid copepod Cyclops vicinus (Uljanin) and those infected with a Cestoda procercoid (P < 0.05). Oxygen consumption and growth were lower in infected copepods. A reduction in the reproductive capacity of infected females was observed. Although 68% of uninfected female Cyclops had developed eggs in their gonads, only 25% of the infected female copepods had developed eggs. The feeding rate of infected copepods was, on the contrary, relatively high.

Des différences concernant la taille du corps et la consommation d'oxygène ont été trouvées chez le copépode d'eaux douces Cyclops vicinus (Uljanin), entre des individus infestés par une larve procercoïde de Cestode et d'autres non infestés (P < 0,05). La consommation d'oxygène et la croissance étaient inférieures ches les copépodes infestés. Une diminution de la capacité de reproduction des femelles infestées a été observée. Bien que 68% des femelles Cyclops non infestées aient développé des oeufs dans leurs gonades, seulement 25% des copépodes femelles infestées ont développé des oeufs. Le taux d'alimentation des copépodes infestés, était, en revanche, relativement élevé., Differences in body size and oxygen consumption were found between uninfected individuals of the freshwater cyclopoid copepod Cyclops vicinus (Uljanin) and those infected with a Cestoda procercoid (P < 0.05). Oxygen consumption and growth were lower in infected copepods. A reduction in the reproductive capacity of infected females was observed. Although 68% of uninfected female Cyclops had developed eggs in their gonads, only 25% of the infected female copepods had developed eggs. The feeding rate of infected copepods was, on the contrary, relatively high.

Des différences concernant la taille du corps et la consommation d'oxygène ont été trouvées chez le copépode d'eaux douces Cyclops vicinus (Uljanin), entre des individus infestés par une larve procercoïde de Cestode et d'autres non infestés (P < 0,05). La consommation d'oxygène et la croissance étaient inférieures ches les copépodes infestés. Une diminution de la capacité de reproduction des femelles infestées a été observée. Bien que 68% des femelles Cyclops non infestées aient développé des oeufs dans leurs gonades, seulement 25% des copépodes femelles infestées ont développé des oeufs. Le taux d'alimentation des copépodes infestés, était, en revanche, relativement élevé.]

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/content/journals/10.1163/156854002760202697
2002-05-01
2015-08-29

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