Evaluation of Fecundity for Variants of Laboratory Bred Glossina Morsitan Submorsitan and Glossina Palpalis Palpalis Exposed to Ethanol at Larval Stage

Abstract

22 nos Larvae of Glossina morsitan submorsitan and Glossina palpalis palpalis collected from the insectary after larviposition was immediately exposed to 50% ethanol and observed for puparium time; Glossina Palpalis palpalis indicated an average of 13.22min while Glossina morsitan submorsitan indicated an average of 10.72mins. The average emergence period of the F¹ generation of young tsetse flies for both species were 30 days. After mating, 16 nos exposed variant of all Glossina morsitan submorsitan did not produce any offspring while 2 nos of Glossina palpalis palpalis larviposited. The study reveals that Glossina palpalis palpalis maintained a normal fecundity irrespective of larvae exposure to alcohol while Glossina morsitan submorsitan maintained a null fecundity thus showing remarkable result for possible derivative insecticidal control of the Glossina morsitan submorsitan.

Keywords: fecundity, Glossina morsitan submorsitan, Glossina palpalia palpalis, trypanosomiasis