The Trypanosome Infections of Tsetse-flies in Northern Nigeria and a new Method of Estimation

1924 ◽  
Vol 14 (3) ◽  
pp. 265-288 ◽  
Author(s):  
Ll. Lloyd ◽  
W. B. Johnson
Keyword(s):  
New Method ◽  
Tsetse Flies ◽  
Northern Nigeria ◽  
Trypanosome Infection ◽  
Nigerian Government ◽  
Entomological Research

The Tsetse Investigation in N. Nigeria is being carried out under the auspices of the Imperial Bureau of Entomology, the expense being met by the Nigerian Government. The work was commenced by the present Investigators in 1921 and their Report dealing with the first year's work was published in the Bulletin of Entomological Research (xiii, p. 373, April 1923). This paper deals more fully with the trypanosome infection of tsetses in Nigeria and describes a method of estimating this with rapidity.

scholarly journals The effect of starvation on the susceptibility of teneral and non-teneral tsetse flies to trypanosome infection

2006 ◽  
Vol 20 (4) ◽  
pp. 388-392 ◽  
Author(s):  
C. KUBI ◽  
J. VAN DEN ABBEELE ◽  
R. DE DEKEN ◽  
T. MARCOTTY ◽  
P. DORNY ◽  
...  
Keyword(s):  
Tsetse Flies ◽  
Trypanosome Infection

A low Density of Tsetse Flies associated with a high Incidence of Sleeping Sickness

1944 ◽  
Vol 35 (1) ◽  
pp. 51-51 ◽  
Author(s):  
T. A. M. Nash
Keyword(s):  
Infection Rate ◽  
Extreme Case ◽  
Dry Season ◽  
Sleeping Sickness ◽  
Tsetse Flies ◽  
Low Density ◽  
Northern Nigeria ◽  
High Incidence

In 1935, Dr. Anderson made a sleeping sickness survey of the Kudaru District of Zaria Emirate, Northern Nigeria, where he found a high incidence of the disease. In the extreme case of the small hamlet of Sambo, he recorded a 70 per cent, infection rate among the 43 inhabitants.The writer followed up this survey with an entomological investigation in the late dry season, and paid particular attention to. this hamlet.

The ‘White-clubbed’ form of Syntomosphyrum (Hym., Eulophidae) parasitic on tsetse flies

1960 ◽  
Vol 51 (1) ◽  
pp. 17-20 ◽  
Author(s):  
D. S. Saunders
Keyword(s):  
Glossina Pallidipes ◽  
Distinct Species ◽  
Tsetse Flies ◽  
Northern Nigeria ◽  
Male Progeny ◽  
Physiological Barrier

Cross-mating experiments are reported between adults of the typical, darkclubbed form of Syntomosphyrum glossinae Wtstn., obtained from pupae of Glossina pallidipes Aust. from Kenya and of G. palpalis (R.-D.) and G. morsitans submorsitans Newst. from Northern Nigeria, and the ‘white-clubbed’ form of Syntomosphyrum, originally reported by Waterston from Nyasaland, obtained from pupae of G. morsitans Westw. from Tanganyika.Fertilised eggs, giving rise to offspring of both sexes, were produced only by crosses between the strains of typical S. glossinae. Crosses in either direction between the ‘white-clubbed’ form and typical S. glossinae resulted in all-male progeny, presumed to develop from unfertilised eggs. It is considered that this is evidence of a physiological barrier to reproduction between the two forms. The ‘white-clubbed’ form is therefore regarded as a distinct species.

Suppression of Trypanosoma congolense, T. vivax and T. brucei infection rates in tsetse flies maintained on goats immunized with uncoated forms of trypanosomes grown in vitro

Parasitology ◽  
1985 ◽  
Vol 91 (1) ◽  
pp. 53-66 ◽  
Author(s):  
M. Murray ◽  
H. Hirumi ◽  
S. K. Moloo
Keyword(s):  
Binding Assay ◽  
Solid Phase ◽  
Antibody Responses ◽  
Tsetse Flies ◽  
Trypanosome Infection ◽  
Infection Rates ◽  
Glossina Morsitans ◽  
Glossina Morsitans Centralis ◽  
Species Specific

Significant suppression in the incidence of cyclical development of Trypanosonia congolense, T. vivax and T. brucei occurred in Glossina morsitans centralis maintained on goats immunized with in vitro-propagated uncoated forms of T. congolense, T. vivax and T. brucei, respectively. This was observed when tsetse given a T. congolense-infected feed were subsequently maintained on uninfected immunized goats and also when uninfected tsetse were fed on immunized goats infected with T. congolense, T. vivax and T. brucei. Suppression of infection rates in tsetse was trypanosome species specific, but was independent of the trypanosome stock used for immunization of goats. These findings were reflected in antibody responses to uncoated trypanosomes, as measured by immunofluorescence and the solid-phase immuno radiometric binding assay. Thus, antibody from goats immunized with uncoated trypano somes of one species exhibited minimal reactivity with uncoated forms of other species of trypanosomes, but showed high levels of activity with uncoated forms of the same or unrelated stocks of the same species. However, in view of the range of hosts upon which tsetse feed, it is open to question whether the use of a vaccine which suppresses trypanosome infection rates in tsetse would have any significant effect in the field.

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