Abstract
The die! activity patter n ofGlossina austeni was studied on the south coast of Kenya, and in the laboratory. In the field, flies were sampled hourly by continuous catch from a standing vehicle, or by traps. In the laboratory, observations were made of the flies’ take-off-responses to host odour at various times of the diel cycle, in a flight chamber. The results showed that G. austeni is day-active with some activity throughout the daylight hours, but with significant peaks occurring at 09.00–10.00h and between 14.00 and 17.00h, i.e. a roughly V-shaped pattern.
Résumé
Une etude sur le rythme d’activité journalière de la mouche tsetse de l’espèce Glossina austeni a ete menée dans la partie sud de la cote du Kenya et au laboratoire dans une chambre aérodynamique. Les objectifs principaux étaient de determiner si cette espece a une activité diurne, ou crépusculaire, et aussi determiner son cycle d’agressivité en étudient le rhythme d’activité en presence de l’odeur de l’hote. Deux méthodes ont ete utilisées sur le terrain et une seule au laboratoire: capture continue a partir d’un vehicle et usage des pièges; au laboratoire, des observations ont ete faites dans une chambre aérodynamique. Les résultats ont montre de faconculuante que G. austeni est une espece a comportement diurne dont l’activité est manifeste tout au long de la lumiere du jour, soit de 06h00 environ jusqu’à 18h00, avec des pics significatifs survenant a la mi-matin (0900–1000h) et en milieu d’apres-midi (1400–1700h environ). Le rhythme qui s’en était dégage est globalement en forme de U ou de V.
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Owaga, M.L.A., Okelo, R.O. & Chaudhury, M.F.B. Diel Activity Pattern of The Tsetse Fly Glossina Austeni Newstead (Diptera: Glossinidae) in The Field and in The Laboratory. Int J Trop Insect Sci 14, 701–705 (1993). https://doi.org/10.1017/S1742758400018154
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DOI: https://doi.org/10.1017/S1742758400018154