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Notes on the Ecology of a Natural Glossina austeni (Diptera: Glossinidae) Population in the Jozani Forest, Unguja Island of Zanzibar

Published online by Cambridge University Press:  19 September 2011

Marc J. B. Vreysen  and
Issa S. Khamis
Marc J. B. Vreysen*
Affiliation:
International Atomic Energy Agency, P.O. Box 100, A-1400 Vienna, Austria
Issa S. Khamis
Affiliation:
Commission of Agriculture, Livestock and Natural Resources, P.O. Box 159, Zanzibar, United Republic of Tanzania
*
Corresponding author: MV. IAEA Project RAF/5/040, P.O. Box 19917, Addis Ababa, Ethiopia. E-mail: m.vreysen@telecom.net.et
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Abstract

Studies were made of Glossina austeni captured with sticky panels during the dry and wet season in the northern and central part of the Jozani forest on the island of Unguja, Zanzibar. The density of the fly population was significantly higher in the northern part of the forest than in the central. Female and male daily catches remained stable in time in the northern part of the forest but the density of the male fly population declined significantly in the central part of the forest at the end of the dry season. The magnitude of the catch and the sex ratio of the samples was highly affected by the trap site in both locations. Only samples in the central part of the forest were biased towards one of the sexes depending on the seasons. The age composition of the male flies was independent of locality and season but the one of female flies was influenced by the seasons in the central part of the forest. The breeding and abortion rate of flies were similar in the two locations both during the wet and dry seasons. The stability of the fly population in terms of density and composition is probably a reflection of the optimal environmental conditions in this primary forest habitat.

Résumé

Des études ont été effectuées sur Glossina austeni capturé avec des panneaux gluants pendant la saison sèche et la saison des pluies dans la partie nord et centrale de la forêt Jozani sur l'île d'unguja, Zanzibar. La densité de la population des mouches tsétsé était plus élevée d'une manière significative dans la partie nord de la forêt par rapport à la partie centrale. Les captures quotidiennes des mâles et femelles restaient stable dans le temps dans la partie nord de la forêt, mais la densité de la population mâle diminuait d'une manière significative dans la partie centrale de la forêt à la fin de la saison sèche. L'endroit du piège, aussi bien au nord que dans la partie centrale, influait beaucoup sur la grandeur de la capture et la proportion des femelles dans les échantillons. Seuls les échantillons dans la partie centrale de la forêt penchaient vers une majorité d'un des sexes dépendant des saisons. La composition d'âge des mouches mâles ne dépendait pas de l'endroit ou de la saison, mais dans la partie centrale, les saisons influaient sur la composition d'âge des mouches femelles. Le taux de reproduction et d'avortement étaient comparables dans les deux endroits aussi bien pendant la saison des pluies que pendant la saison sèche. La stabilité de la population des mouches en termes de densité et de composition est probablement le reflet de conditions optimales de l'environnement dans cet habitat de forêt primaire.

Keywords

Glossina austenisticky panelecologysample size and compositionsite effectsGlossina austenipanneau gluantécologiegrandeur et composition d'échantillonseffet de l'endroit du piège
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 19 , Issue 2-3 , September 1999 , pp. 99 - 108
Copyright
Copyright © ICIPE 1999

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References

REFERENCES

Baldry, D. A. T. and Van der Vloedt, A. M. V. (1982) A modified wing-fray analysis technique for age estimation in Glossina, pp. 185–190. In Sterile Insect Technique and Radiation in Insect Control (Proceedings of a FAO/IAEA symposium, Neuherberg, 29 June-3 July 1981), IAEA-SM 255/56, Vienna.Google Scholar
Bursell, E. and Taylor, P. (1980) An energy budget for Glossina (Diptera: Glossinidae). Bull. Ent. Res. 70, 187–196.CrossRefGoogle Scholar
Buxton, P. A. (1955) The Natural History of Tsetse Flies. H.K. Lewis & Co. Ltd., London, 816 pp.Google Scholar
Challier, A. (1965) Amélioration de la méthode de détermination de l'âge physiologique des glossines. Bull. Soc. Path. Exot. 58, 250–259.Google Scholar
Challier, A. (1982) The ecology of tsetse (Glossina spp.) (Diptera: Glossinidae): A review (1970–1981). Insect Sci. Applic. 3, 97–143.Google Scholar
Challier, A. and Gouteux, J.-P. (1980) Ecology and epidemiological importance of Glossina palpalis in the Ivory Coast forest zone. Insect Sci. Applic. 1, 77–83.Google Scholar
Challier, A. and Laveissière, C. (1973) Un nouveau piège pour la capture des glossines (Glossina: Diptera, Muscidae): Description et essais sur le terrain. Cah. ORSTOM, Sér. Ent. Méd. Parasit. 11, 251–262.Google Scholar
Challier, A. and Turner, D. (1985) Methods to calculate survival rate in tsetse fly (Glossina) populations. Ann. Soc. belge Méd. trop. 65, 191–197.Google ScholarPubMed
Gouteux, J. P. and Kiénou, J. P. (1982) Observations sur les glossines d'un foyer forestier de trypanosomiase humaine en Côte d'Ivoire. 5. Peuplement de quelques biotopes caractéristiques: Plantations, forêts et galleries forestières, en saison de pluies. Cah. ORSTOM, Sér. Ent. Méd. Parasit. 20, 41–61.Google Scholar
Hargrove, J. W. and Vale, G. A. (1980) Catches of Glossina morsitans morsitans Westwood and G. pallidipes Austen (Diptera: Glossinidae) in odour baited traps in riverine and deciduous woodlands in the Zambesi valley of Zimbabwe. Bull. ent. Res. 70, 571–578.CrossRefGoogle Scholar
Höreth-Böntgen, D. W. (1992) Control of Glossina austeni and cattle trypanosomiasis in Unguja island by deltamethrin pour-on application to livestock and with stationary targets in cattle-free zones, pp. 213–218. In Tsetse Control, Diagnosis and Chemotherapy Using Nuclear Techniques. Proceedings of an IAEA/FAO Seminar, Muguga, Kenya, 11–15 Febr. 1991. IAEA-TECDOC-634, Vienna.Google Scholar
Jackson, C. H. N. (1946) An artificially isolated generation of tsetse flies (Diptera). Bull. ent. Res. 37, 291–299.CrossRefGoogle ScholarPubMed
Jordan, A. M. (1986) Trypanosomiasis Control and African Rural Development. Longman Group Ltd., London, 357 pp.Google Scholar
Katunguka-Rwakishaya, E. and Kabagambe, E. K. (1996) Tsetse survey in Mukono district, south east Uganda; population structure, distribution and blood meal status. Trop. Anim. Hlth. Prod. 28, 151–157.CrossRefGoogle Scholar
Leskinen, J., Pohjonen, V. M. and Ali, M. S. (1997) Woody biomass inventory of Zanzibar islands. Technical Paper No. 40. Vantaa, Finland, Metsähallitus Forest and Park Services, 103 pp.Google Scholar
Madubunyi, L. C. (1986) Aspects of the ecology and epizootiological/epidemiological importance of Glossina species inhabiting a peridomestic agro-ecosystem in the Nsukka area, Anambra state, Nigeria. Insect Sci. Applic. 7, 515–520.Google Scholar
Madubunyi, L. C. (1988a) Seasonal sex ratio distortion in Glossina tachinoides Westwood populations inhabiting peridomestic agro-ecosystems of the Nsukka area, Anambra state, Nigeria, in relation to the sterile insect technique, pp. 151–162. In Modern Insect Control: Nuclear Techniques and Biotechnology. Proceedings of a Symposium jointly organised by IAEA and FAO, 16–20 November 1987, Vienna, Austria. IAEA-SM-301/11, Vienna.Google Scholar
Madubunyi, L. C. (1988b) The seasonal breeding rate of Glossina tachinoides Westwood (Diptera: Glossinidae) in peridomestic agro-ecosystems in the Nsukka area, Nigeria. Bull. ent. Res. 78, 143–150.CrossRefGoogle Scholar
Madubunyi, L. C. (1990) Ecological studies of Glossina austeni at Jozani forest, Unguja island, Zanzibar. Insect Sci. Applic. 11, 309–313.Google Scholar
Mellanby, H. (1937) Experimental work on reproduction in the tsetse fly, Glossina palpalis. Parasitology, 29, 131–141.CrossRefGoogle Scholar
Moggridge, J. Y. (1948) Night activity of tsetse (Glossina) on the Kenya Coast. Proc. R. ent. Soc. Lond. 23, 10–12.Google Scholar
Mohamed-Ahmed, M. M., Abdel Karim, E. I. and Rahman, A. H. A. (1993) Reproductive status, catch and age compositions of a natural population of G. morsitans submorsitans in Bahr El Arab fly belt, Sudan. Insect Sci. Applic. 14, 445–153.Google Scholar
Moloo, S. K. (1973) A new trap for Glossina pallidipes Austen and Glossina fuscipes fuscipes Newst. (Diptera: Glossinidae). Bull. ent. Res. 63, 231–236.CrossRefGoogle Scholar
Moloo, S. K. (1992) Comparative study on the susceptibility of different Glossina species to Trypanosoma vivax, T. congolense and T. brucei brucei, pp. 119–121. In Tsetse Control, Diagnosis and Chemotherapy Using Nuclear Techniques. Proceedings of an IAEA/FAO Seminar, Muguga, Kenya, 11–15 Febr. 1991. IAEA-TECDOC-634, Vienna.Google Scholar
Moloo, S. K. (1993) The distribution of Glossina species in Africa and their natural hosts. Insect Sci. Applic. 14, 511–527.Google Scholar
Owaga, M. L. A., Okelo, R. O. and Chaudhury, M. F. B. (1993) Diel activity pattern of the tsetse fly Glossina austeni Newstead (Diptera: Glossinidae) in the field and in the laboratory. Insect Sci. Applic. 14, 701–705.Google Scholar
Saleh, K. M., Vreysen, M. J. B., Kassim, S. S., Suleiman, F. W., Juma, K. G., Zhu, Z.-R., Pan, H., Dyck, V. A. and Feldmann, H. U. (1997) The successful application of the sterile insect technique (SIT) for the eradication of Glossina austeni (Diptera: Glossinidae) from Unguja Island (Zanzibar), pp. 438–445. In Proceedings 24th Meeting of the International Scientific Council for Trypanosomiasis Research and Control, Maputo, Mozambique, 29 Sep.-3 Oct., 1997, OAU/IBAR, Nairobi.Google Scholar
Saunders, D. S. (1960) The ovulation cycle in Glossina morsitans Westwood (Diptera: Muscidae) and a possible method of age determination for female tsetse flies by the examination of their ovaries. Trans. Roy. ent. Soc. Lond. 112, 211–238.CrossRefGoogle Scholar
Saunders, D. S. (1964) The effect of sampling method on the size and composition of catches of tsetse flies (Glossina) and Tabanidae (Diptera). Bull. ent. Res. 55, 483–497.CrossRefGoogle Scholar
Sokal, R. R. and Rohlf, F. J. (1995) Biometry. 3 rd. edition. W.H. Freeman, New York. 887 pp.Google Scholar
Turner, D. A. (1980) Tsetse ecological studies in Niger and Mozambique: 1. Population sampling. Insect Sci. Applic. 1, 9–13.Google Scholar
Turner, D. A. (1987) The population ecology of Glossina pallidipes Austen (Diptera: Glossinidae) in the Lambwe Valley, Kenya. 1. Feeding behaviour and activity patterns. Bull. ent. Res. 77, 317–333.CrossRefGoogle Scholar
Turner, D. A. and Makishe, F. (1985) The distribution of Glossina austeni on Zanzibar, pp. 263–271. In Eighteenth Meeting of the International Scientific Council for Trypanosomiasis Research and Control, Harare, Zimbabwe, 1985. OAU/IBAR, Nairobi.Google Scholar
Turner, D. A. and Snow, W. F. (1984) Reproductive abnormality and loss in natural populations of Glossina pallidipes Austen (Diptera: Glossinidae) in Kenya. Bull. Ent. Res. 74, 299–309.CrossRefGoogle Scholar
Vale, G. A. and Phelps, R. J. (1978) Sampling problems with tsetse flies (Diptera: Glossinidae). J. Appl. Ent. 15, 715–726.Google Scholar
Van der Vloedt, A. M. V. and Barnor, H. (1984) The effects of ionising radiation on tsetse biology. Their relevance to entomological monitoring during integrated control programmes using the sterile insect technique. Insect Sci. Applic. 5, 431–437.Google Scholar
Van Etten, J. (1981) Comparative studies on the relative efficiency of two trap types for two allopatric populations of Glossina pallidipes in Kenya. Entomol. Exp. Appl. 29, 209–217.CrossRefGoogle Scholar
Vreysen, M. J. B., Khamis, I. and Van der Vloedt, A. M. V. (1996) Evaluation of sticky panels to monitor populations of Glossina austeni (Diptera: Glossinidae) on Unguja island of Zanzibar. Bull. ent. Res. 86, 289–296.CrossRefGoogle Scholar
Vreysen, M. J. B., Saleh, K. M., Khamis, I. S. and Mramba, F. (1999a) An evaluation of insecticide-impregnated screens against Glossina austeni (Diptera: Glossinidae) on Unguja island of Zanzibar. Insect Sci. Applic. 19, 75–84.Google Scholar
Vreysen, M. J. B., Saleh, K. M., Ali, M. Y., AbduUa, A. M., Zhu, Z.-R., Juma, K. G., Dyck, V. A., Msangi, A. R., Mkonyi, P. A. and Feldmann, H. U. (1999b) Tsetse fly Glossina austeni (Diptera: Glossinidae) eradicated on the island of Unguja (Zanzibar) using the sterile insect technique (SIT): Entomological field data. J. Econ. Entomol. (in press).Google Scholar