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Genetics of the mimetic African butterfly Hypolimnas misippus: hindwing polymorphism
(University of Nairobi,, 1989)
The hindwing polymorphism in Hypolimnas misippus is autosomal but sex-limited to the female. It is characterised by three intergrading phenotypes, orange, low white (white in 1–3 intervein spaces) and high white (white in ...
Seasonal population changes and malaria transmission potential of Anopheles pharoensis and the minor anophelines in Mwea Irrigation Scheme, Kenya
(1989)
A study in 1984 and 1985 showed that Anopheles gambiae s.l. and An. pharoensis were the major anophelines in Mwea Irrigation Scheme, Kenya, constituting 83.86% and 15.69% of the catch respectively. Four minor species made ...
Biochemical identification of Phlebotomus (Larroussius) pedifer and Phlebotomus (Larroussius) elegonensis
(1989)
Females of the vector of Leishmania aerhiopica, Phlebotomus pedifer. have previously been morphologically
indistinguishable from the non-vector. P. elegonensis. The present studies have biochemically separated these two ...
Factors influencing the development of Brugia pahangi microfilariae on Culex quinquefasciatus and Aedes aegypti mosquitoes
(1989)
Culex quinquefasciatus (Wiedemann) mosquitoes, which are refractory to Brugia pahangi (Buckley and Edeson) microfilariae, were fed simultaneously on Wuchereria bancrofti (Cobbold) and B. pahangi microfilariae. A selected ...
Distribution of Cr, Pb, Cd, Zn, Fe and Mn in lake Victoria sediments, East Africa
(1989)
The presence of many metals at trace or ultra-trace levels in the human environment has received increased global attention. Sediments as a sink for pollutants are widely recognized pollution sources and diagenesis and ...
Maturity, fecundity and the effect of reduced rainfall on the spawning rhythm of a siluroid catfish, Clarias mossambicus (Peters)
(University of Nairobi, 1989-10)
Five maturity stages in the male and six in the female Clarias mossambicus (Peters) are described based on macroscopic and histological analysis of the gonads. During the study period (September 1984-August 1985) the species ...
Westwards moving disturbances in the Southwest Indian Ocean
(1989)
The First Garp Global Experiment data collected during 1979 at sea level and 850 mb level have been used to examine the origin and characteristics of the westwards moving disturbances in the western Indian Ocean.
From the ...
Mortality in adult tsetse, Glossina morsitans morsitans, caused by entomopathogenic bacteria
(University of Nairobi., 1989-07)
Mortality in adult tsetse, Glossina morsitans morsitans, caused by Pseudomonas aeruginosa, Serratia marcescens, Bacillus sphaericus, Bacillus cereus, Bacillus thuringiensis H-14, B. thuringiensis 1, B. thuringiensis 5, B. ...