Fertilization in the Tsetse Fly, Glossina palpalis, in a Population of Low Density

10.2307/1424 ◽  
1940 ◽  
Vol 9 (1) ◽  
pp. 24 ◽  
Author(s):  
C. Teesdale
Keyword(s):  
Tsetse Fly ◽  
Low Density ◽  
Glossina Palpalis

scholarly journals A peridomestic population of the tsetse fly Glossina palpalis palpalis Robineau-Desvoidy, 1830 (Diptera: Glossinidae) at Kontagora town, Niger state, Nigeria

2004 ◽  
Vol 11 (4) ◽  
pp. 599-610 ◽  
Author(s):  
A. B. Ahmed
Keyword(s):  
Tsetse Fly ◽  
Glossina Palpalis Palpalis ◽  
Infection Rates ◽  
Wet Season ◽  
Abnormal Behaviour ◽  
The Public ◽  
Close Proximity ◽  
Reservoir Hosts ◽  
Glossina Palpalis ◽  
Wild Life

The present article considers some aspects of a peridomestic population of the tsetse fly Glossina palpalis palpalis Robineau-Desvoidy, 1830 in Kontagora, Nigeria. This situation characterizes an abnormal behaviour of the vector, and it is of significant epidemiological importance. Data on the ecology of this species were collected in 1995 and 1999. The results indicated that the species exists during both dry and wet seasons; approximately 30.0% of the catches were gorged with blood giving a MHS of 2.4, indicating a well-nourished population. Dissection of inseminated pars indicated pregnancy rates of approximately 30.0% and 70.0% in the dry and wet seasons and the presence of all 4 stages of pregnancy, suggesting that breeding occurs at both seasons. Longevity of flies was approximately 16 days in dry season and 25 days in the wet season. Overall results indicated that vector/host contact was high and the fly population has adapted and actively breeding in the area. Trypanosome infection rates of 18.2% consist of 1 brucei-type and 5 vivax-type infections. The public health implications of the close proximity of the wild natural reservoir hosts of the human T. b. gambiense Dutton, 1902 parasites at the Kainji Wild Life park is discussed.

Experimental Work with the Tsetse-fly, Glossina palpalis, in Uganda

1936 ◽  
Vol 27 (4) ◽  
pp. 611-632 ◽  
Author(s):  
Kenneth Mellanby
Keyword(s):  
Life Cycle ◽  
East Africa ◽  
Experimental Work ◽  
Laboratory Experiments ◽  
Climatic Conditions ◽  
Tsetse Fly ◽  
London School ◽  
East African ◽  
Laboratory Assistant ◽  
Glossina Palpalis

This is an account of laboratory experiments made with the tsetse Glossina palpalis. The results deal mainly with the effects of climatic conditions, temperature and humidity in particular, on the metabolism and life-cycle. Some work was also done on the activity and behaviour of the fly, but this is very incomplete, though it shows the importance of the problem and the need for further study.The work was done during a visit of just over a year to East Africa, in 1935-36, as Wandsworth Scholar of the London School of Hygiene and Tropical Medicine. I spent most of the time at the Human Trypanosomiasis Institute, Entebbe, Uganda, and also visited tsetse areas in Kenya and Tanganyika. I am grateful to all those who helped to make my visit profitable. Among others, to the Directors of Medical Services of the East African territories, in particular the Hon. W. H. Kauntze of Uganda, and many members of their departments. To Mr. C. B. Symes, Medical Entomologist, Kenya, and to Mr. W. H. Potts, of the Department of Tsetse Research, Tanganyika. I am especially grateful to Dr. H. Lyndhurst Duke, Director of the Human Trypanosomiasis Institute, for many kindnesses. Considerable assistance was received from Mrs. Helen Mellanby, who was working on allied problems at Entebbe. And mention must be made of the intelligent and conscientious help of my laboratory assistant, Omw. Bonaventure Semalwadde.

scholarly journals Two Tsetse Fly Species, Glossina palpalis gambiensis and Glossina morsitans morsitans, Carry Genetically Distinct Populations of the Secondary Symbiont Sodalis glossinidius

2005 ◽  
Vol 71 (12) ◽  
pp. 8941-8943 ◽  
Author(s):  
Anne Geiger ◽  
Gérard Cuny ◽  
Roger Frutos
Keyword(s):  
Genetic Diversity ◽  
Length Polymorphism ◽  
Fragment Length ◽  
Fragment Length Polymorphism ◽  
Glossina Morsitans Morsitans ◽  
Tsetse Fly ◽  
Glossina Morsitans ◽  
Glossina Palpalis Gambiensis ◽  
Sodalis Glossinidius ◽  
Glossina Palpalis

ABSTRACT Genetic diversity among Sodalis glossinidius populations was investigated using amplified fragment length polymorphism markers. Strains collected from Glossina palpalis gambiensis and Glossina morsitans morsitans flies group into separate clusters, being differentially structured. This differential structuring may reflect different host-related selection pressures and may be related to the different vector competences of Glossina spp.

scholarly journals Investigations into the Bionomics of Glossina palpalis

1920 ◽  
Vol 10 (4) ◽  
pp. 347-463 ◽  
Author(s):  
W F. Fiske
Keyword(s):  
Sleeping Sickness ◽  
Tsetse Fly ◽  
Glossina Morsitans ◽  
Glossina Palpalis ◽  
Made In

These studies were made in Uganda on the islands and shores of Victoria Nyanza, in territory which had been depopulated some years before on account of tsetse-fly and sleeping sickness. They were begun in October 1913, and extended over two full years, of which eighteen months were spent in the fly belt on Victoria Nyanza, and three months on a tour into Bunyoro, where for the time being (the spring of 1914) Glossina morsitans was the centre of greater attraction as a possible vector of human trypanosomiasis. Seven tours were made from headquarters at Entebbe—the shortest, of three days only, being interrupted by the War, and the longest, of eight full months, being much prolonged by the War.

Aircraft Applications of Insecticides in East Africa. I.—Preliminary Experiments in Areas supporting Populations of the Tsetse Fly (Glossina palpalis (R.-D.))

1953 ◽  
Vol 44 (3) ◽  
pp. 589-600 ◽  
Author(s):  
K. S. Hocking ◽  
D. Yeo
Keyword(s):  
East Africa ◽  
Meteorological Conditions ◽  
Tsetse Fly ◽  
Treated Area ◽  
Dense Forest ◽  
Glossina Palpalis

Preliminary experiments are described of applications from aircraft of coarse sprays and coarse aerosols. The experiments were carried out over dense forest areas containing the tsetse fly G. palpalis.At dosages of 0·2 lb. per acre of the p,p'isomer of DDT, or 0·032 lb. per acre of the γ isomer of BHC, both the sprays and the aerosols were relatively ineffective, and significant kills were obtained only with the aerosols.The sprays were ineffective not only because they did not penetrate the canopy, but also because the nominal dosage was in any case too small to produce lethal deposits upon vegetation.Much of the aerosol was filtered out by the upper layers of the canopy. The meteorological conditions in the area were also unsuitable for the application of aerosols, and much of the insecticide did not reach the canopy, but was blown away from the treated area.It is concluded that aircraft applications of insecticide against G. palpalis are wasteful of insecticide, and would be very costly if substantial reductions in fly population were to be obtained. If insecticides are to be of value in such areas, ground methods of applying them would be almost certainly more effective, and less costly.

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