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Evolution de la microsporidiose due à Nosema henosepilachnae dans les populations naturelles de Henosepilachna elaterii

Published online by Cambridge University Press:  19 September 2011

Bhen Sikina Toguebaye
Affiliation:
Département de Biologie animale, Faculté des Sciences et Techniques, Université C. A. Diop de Dakar, Dakar, Sénégal
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Abstract

Collections of the leaf beetle Henosepilachna elaterii Rossi, 1794 (Protozoa: Microspora) were carried out monthly from July 1988 to June 1991, from melon and cucumber plants in Senegal. Of the 1895 larvae and adults collected and examined, 1223 (64.53%) were infected with Nosema henosepilachnae Toguebaye and Marchand, 1984. The monthly infection prevalence ranged from 51.28% to 87.30%. These observations indicate that the infection due to N. henosepilachnae is prevalent in the natural populations of H. elaterii.

Résumé

Des récoltes mensuelles de Henosepilachna elaterii Rossi, 1794 (Protozoa: Microspora) ont été faites sur des plants de melon et concombre entre juillet 1988 et juin 1991 au Sénégal. Sur les 1895 larves et adultes capturés et examinés, 1223 (64,53%) étaient infestés par Nosema henosepilachnae Toguebaye et Marchand, 1984. Les taux mensuels de parasitisme ont varié de 51,28% à 87,30%. Ces observations indiquent que la microsporidiose est fréquente et importante dans les populations naturelles de H. elaterii.

Type
Short Communications
Copyright
Copyright © ICIPE 1995

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