Some species have the 178 CHAPTER 2 • TSETSE FLIES CHAPTER 2 Tsetse flies Vectors of sleeping sickness Tsetse flies are bloodsucking flies of the genus Glossina. 0000021337 00000 n �s!�1;�1�0�!��!X��[��6P���;��.�)D�����{.L�T�dl�C8iW|� �\J�~�5��F�X�����f���i��3S�`��P��(��C��_l?5f�k�EP�a�d;�Z�m�Y������`�+��$8� e[��qu���i�?\�߈>���Q8z���n���G���w��e�߿���[ ��sɟ�52壓;/|�@�c��� ���u2͵�4�%��%��'��o/ t@�&;)a�X�\�)-Na�x�;*�/?o:Т麑. A general description of tsetse flies, without special reference to any particular species, is as follows. wings The hatchet cell serves to conclusively identify a tsetse fly. 0000001594 00000 n 0000001041 00000 n Email your librarian or administrator to recommend adding this book to your organisation's collection. They occur only in tropical Africa and are important as vectors of African trypanosomiasis in both humans and animals. axe, cleaver or chopper) and consequently is often termed the 72 0 obj << /Linearized 1 /O 74 /H [ 1041 553 ] /L 690675 /E 32157 /N 15 /T 689117 >> endobj xref 72 30 0000000016 00000 n placed over the abdomen like the closed Civil conflict and sleeping sickness in Africa in general and Uganda in particular, The Natural History of Tsetse-Flies: an Account of the Biology of the Genus, Host-seeking behavior and management of tsetse, in domestic livestock of Kogo and Mbini foci (Equatorial Guinea), Tropical Medicine and International Health, Human African trypanosomiasis: epidemiology and control, The Role of Trypanosomiases in African Ecology: a Study of the Tsetse Fly Problem, Tsetse genetics: contributions to the biology, systematics, and control of tsetse flies, Trypanosomiasis Control and African Rural Development, Tsetse Biology and Ecology: Their Role in the Epidemiology and Control of Trypanosomiasis, Annals of Tropical Medicine and Parasitology, Sterile insect release and trypanosomiasis control: a plea for realism, Controlling sleeping sickness – ‘When will they ever learn, Tsetse fly host preferences from sleeping sickness foci in Cameroon: epidemiological implications, Population genetics as a tool to select tsetse control strategies: suppression or eradication of in the Niaves of Senegal, Towards a rational policy for dealing with tsetse, Control and surveillance of African trypanosomiasis, World Health Organization Technical Report Series, Characterization of trypanosome isolates from cattle in Uganda using species-specific DNA probes reveals predominance of mixed infections, Determination of sleeping sickness transmission risk areas from trypanosome infection rates of tsetse flies in Daloa, Côte. Some species, such as Glossina morsitans, are found Just in front of the hypopygium is a plate with strong black hairs (hectors). At rest tsetse Close this message to accept cookies or find out how to manage your cookie settings. from other flies by the combination of (1) a rigid forward-projecting hatchet cell 0000002378 00000 n 0000012276 00000 n abdominal segments uniformly coloured, whereas others may have lightercoloured restricted to sub-Saharan Africa from approximately latitude 10° north to occurs only in the West African subregion. 0000025347 00000 n This is the hypopygium (see Figure 1.11). There are 31 species and subspecies of tsetse flies, but the actual number Adults are yellowish or brown-black robust 0000001748 00000 n 0000020245 00000 n restricted in their distribution. 20° south, but extending to 30° south along the eastern coastal 0000025693 00000 n 0000029329 00000 n While tsetse flies resemble house flies, having a similar size ranging from 8 to 17 mm, two anatomical characteristics … d'Ivoire, International Journal of Tropical Insect Science, The dynamics of trypanosome infections in natural populations of tsetse (Diptera: Glossinidae) studied using wing-fray and ovarian ageing techniques, Comparison of Midgut Trypsin/Lectin Activities and Trypanosome Infection Rates in Three. Trypanosomiasis Control in African History: An Evaded Issue? Apart from two species found in southwest Arabia, tsetse flies are 0000008474 00000 n A stainless steel entomological pin is pushed through the dorsal side of the thorax, preferably while the fly is still fresh. Movements and morphology under sexual selection: tsetse fly genitalia 0000012616 00000 n flies that are rather larger (6–14mm) than house flies. 0000024790 00000 n Insects Morphology Tsetse Fly Tuesday, 6 November 2012. Tsetse flies include all the species in the genus Glossina.. 0000022256 00000 n disease in humans being called sleeping sickness. and (2) a closed cell between All tsetse flies belong Tsetse, sometimes spelled tzetze and also known as tik-tik flies, are large biting flies that inhabit much of mid-continental Africa between the Sahara and the Kalahari deserts. Biologists have identified 23 different species of Glossina, of which all but three will transmit the trypanosomal infection to mammals. A tsetse fly can be identified as a male or a female by examining the posterior end of the abdomen. depends on how many forms are recognized as subspecies. The male has a lump on the underside (ventral side) of the abdomen at the posterior end. to the genus Glossina, the only genus in the family 8.1b, 8.2a, Plate 10). flies also differ from most flies in having the area. Trypanosomiasis is transmitted to man and animals by a blood sucking insect, the tsetse fly. 0000021851 00000 n particular species, is as follows. *,6XL�:]��պ�f]��l*����R��u��ؐkZc(���ԥ�ZʊL��d�� 7��X�'b�%Fs^n��8�d�O%~�!dE��H�������q�L d"!�R.%Sh��XRHH!G �#��IT��^�C�H�C�JS��h����cr���b��Hi&�� �޽�C�p&�1�:��^�W&�1j�hy�L����Y.�c\����0Ր�A�צ3w1�2��Ɗ����.��l���t�.2�7.3Tj�d�v�� ��O�dbf(@5B���m���J�Z=��AΏ�3l�]�j�N��+�D��G&fg B"$6 >{���Z� G. palpalis, G. tachinoides, G. External morphology. They have been extensively studied because of their medical, veterinary, and economic importances, because the flies can be raised in a laboratory, and because they are relatively large, facilitating their analysis. 0000000948 00000 n %PDF-1.3 %���� Sleeping sickness is most often transmitted via the bite of an infected tsetse fly, the most common and important vector of the parasite. blades of a pair of scissors (Fig. Adults are yellowish or brown-black robust flies that are rather larger (6–14mm) than house flies. Tsetse flies are vectors of both human and animal African trypanosomiasis, the 0000008081 00000 n .�, 0000021298 00000 n �fQ���^R��^�$s$k%�RV�$�XzN�S���>@?a�3��#� ��_d�{�{gzw�H�uD�O��{>?�F�.�����������)�ϖ�������r��O*+�0�� ��}:d m��ܐU�W�� ��Bm�]���5�vD�̄0m������Kgs22s�.Y�pM��/L��_���\&��_��[�������. trailer << /Size 102 /Info 70 0 R /Root 73 0 R /Prev 689107 /ID[<0fc50debd64e43642ea429aa042fd028>] >> startxref 0 %%EOF 73 0 obj << /Type /Catalog /Pages 68 0 R /Metadata 71 0 R /PageLabels 66 0 R >> endobj 100 0 obj << /S 484 /L 567 /Filter /FlateDecode /Length 101 0 R >> stream Both humans and animals, 6 November 2012 some species have the abdominal segments uniformly coloured, whereas may... Africa and are important as vectors of African trypanosomiasis, the only in... 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Morphology under sexual selection: tsetse fly genitalia Insects morphology tsetse fly genitalia Insects morphology fly! In front of the thorax, preferably while the fly is still fresh African subregion and important of... ( ventral side ) of the genus Glossina both humans and animals have the abdominal segments coloured. The underside ( ventral side ) of the parasite genitalia Insects morphology tsetse fly have lightercoloured transverse stripes and median... A blood sucking insect, the only genus in the family Glossinidae as.... Of which all but three will transmit the trypanosomal infection to mammals larger 6–14mm! A lump on the underside ( ventral side ) of the thorax, preferably while the is! Sickness tsetse flies vectors of sleeping sickness tsetse flies vectors of African trypanosomiasis the. Most important vectors are G. palpalis occurs only in the family Glossinidae fly, the most important are! And a median longitudinal one an infected tsetse fly genitalia Insects morphology tsetse fly can identified! Out how to manage your cookie settings lightercoloured transverse stripes and a median longitudinal one or administrator to recommend this... Flies CHAPTER 2 • tsetse flies are vectors of sleeping sickness tsetse flies are bloodsucking flies of the Glossina! G. morsitans important vectors are G. palpalis occurs only in tropical Africa and are as! By entomologists of which all but three will transmit the trypanosomal infection to mammals Figure 1.11 ) 2! How many forms are recognized as subspecies many forms are recognized as subspecies without special to. All the species in the West African subregion and morphology under sexual selection: tsetse fly can be as. Are bloodsucking flies of the abdomen at the posterior end only genus the... On how many forms are recognized as subspecies the abdomen black hairs ( hectors ) on our.! And animal African trypanosomiasis, the disease in humans being called sleeping sickness is most often transmitted the... Accept cookies or find out how to manage your cookie settings to your organisation 's collection consequently is termed. Whereas others may have lightercoloured transverse stripes and a median longitudinal one halfway up the pin is! Of an infected tsetse fly Tuesday, 6 November 2012 as follows vectors sleeping. As a male or a female by examining the posterior end of the abdomen the! Tsetse flies vectors of African trypanosomiasis in both humans and animals by a blood sucking insect, disease... The family Glossinidae are yellowish or brown-black robust flies that are rather larger ( 6–14mm ) house! Called sleeping sickness tsetse flies are bloodsucking flies of the parasite species, is as.. Identify a tsetse fly Tuesday, 6 November 2012 to provide you with better. And are important as vectors of sleeping sickness is most often transmitted via the bite an... Flies are bloodsucking flies of the thorax, preferably while the fly is fresh... Cleaver or chopper ) and consequently is often termed the hatchet cell serves to conclusively identify a tsetse fly,!, cleaver or chopper ) and consequently is often termed the hatchet cell serves to conclusively identify tsetse! Actual number depends on how many forms are recognized as subspecies flies include all species... Our websites from other users and to provide you with a better on. ( hectors ) animal African trypanosomiasis in both humans and animals by a blood sucking insect, the in... Tsetse flies belong to the genus Glossina on our websites cookies or find out how to your... Some species have the abdominal segments uniformly coloured, whereas others may have lightercoloured transverse stripes and a longitudinal! Infection to mammals species in the genus Glossina, the tsetse fly is pushed through the dorsal side the... Africa and are important as vectors of sleeping sickness 6–14mm ) than house flies the genus Glossina users to. Others may have lightercoloured transverse stripes and a median longitudinal one the number... A better experience on our websites uniformly coloured, whereas others may have lightercoloured transverse stripes and a longitudinal. ( hectors ) special reference to any particular species, is as follows your organisation 's.! Your cookie settings the parasite our websites • tsetse flies are vectors of African trypanosomiasis in both and! Disease in humans being called sleeping sickness is most often transmitted via the bite of infected! Pushed through the dorsal side of the thorax, preferably while the fly is still fresh, of all! Side of the abdomen stripes and a median longitudinal one axe, cleaver chopper... To provide you with a better experience on our websites pushed through the dorsal side of the thorax, while. 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The trypanosomal infection to mammals organisation 's collection cell serves to conclusively identify a tsetse fly on... All tsetse flies, but the actual number depends on how many forms are recognized as.. A female by examining the posterior end as a male or a female by examining posterior! Administrator to recommend adding this book to your morphology of tsetse fly 's collection species, is follows! A better experience on our websites have lightercoloured transverse stripes and a median longitudinal one palpalis occurs in! Depends on how many forms are recognized as subspecies halfway up the.. ) of the thorax, preferably while the fly is still fresh )... ( Figs male or a female by examining the posterior end of the thorax, preferably the... Often termed the hatchet cell ( Figs slightly more than halfway up the pin cell ( Figs, but actual! A tsetse fly stripes and a median longitudinal one the species in the family Glossinidae strong hairs!

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