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Development time ofCoccinella septempunctata in relation to constant temperatures[Col.: Coccinellidae]

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Abstract

Development times at constant temperatures were determined for the egg, larval and pupal stages ofCoccinella 7-punctata L., recently introduced to U.S.A. Males and females developed at the same rate. The egg stage lasted from 2.3 to 13.0 days at 30° and 15°C, respectively. Larvae feeding onAcyrthosiphon pisum (Harris), pea aphids, required from 6.2 to 31.1 days at 32.5°, and 17.0°C, respectively. These development rates are similar to those reported in the European literature.

Résumé

Les durées de développement à températures constantes ont été déterminées pour l'œuf, les stades larvaires et l'imago deCoccinella 7-punctate récemment introduit aux États-Unis. Les mâles et les femelles se développent au même rythme. Le stade œuf dure de 2,3 à, 13,0 j à 30° et 15°C, respectivement. L'alimentation des larves avec le puceron du poisAcyrtosiphon pisum (Harris) dure 6,2 et 31,1 j à 32,5 et 17,0°C, respectivement. Le stade nymphal est observé pendant 2,8 et 13,0 j à ces mêmes températures. Ces vitesses de développement sont les mêmes que celles données dans la littérature européenne.

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Butler, G.D. Development time ofCoccinella septempunctata in relation to constant temperatures[Col.: Coccinellidae] . Entomophaga 27, 349–352 (1982). https://doi.org/10.1007/BF02374819

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