Larviposition and emergence pattern in a laboratory colony of Glossina palpalis R-D (Diptera: Glossinidae)


ABSTRACT: The objectives of this investigation were to determine the peak of puparia production from a
colony of Glossina palpatis palpalis fed on guinea pigs and the cut-off time when most of the female emergence occurs from different weight classes of puparia of the same age. The results indicated that 67.5% of the total puparia production occurred between 6 a.m. and 6 p.rn., while the remaining 32.5% occurred in the dark period. The peak of puparia production occurred between 12 noon and 6 p.m. during which 69% of the production between 6a.m. and 6 p.m. took place (i.e. 46.8% of the total production). The cut-off time that could be recommended. for irradiation treatment of male puparia was 12 noon on the 34th day after larviposition. At this time about 90% of the females had emerged leaving behind mainly puparia, comprising 84-87% of the remaining viable puparia. The significance of these results is discussed in relation to tsetse control strategy involving the use of the Sterile Insect Technique, for G. p. palpalis,

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