Newberry, K


Seasonal variations in populations of Glossina morsitans centralis Machado samples at deflying pickets in Zambia, by K. Newberry, Zambia Journal of Science & Technology, Vol.3, no.2, April 1978 Pg. 35-41.


Records of catches at a tsetse fly picket worked by the Department of Veterinary and Tsetse Control Services, Zambia, were examined for the period 1969 to 1974. A consistent rhythm of low and high catch of flies per unit traffic was found to coincide with the first and second halves of each calendar year respectively, with a higher female percentage in the catches of the second halves. Male flies caught at several pickets were studied during 1973 and 1974 and found to be smaller, as assessed by wing vein measurement, in the second halves of each year. No single environmental factor satisfactorily explained these variations in the tsetse population

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