Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-10T15:01:52.082Z Has data issue: false hasContentIssue false
  • English
  • Français

Age distributions and reproductive status of declining and stationary populations of Glossina pallidipes Austen (Diptera: Glossinidae) in Zimbabwe

Published online by Cambridge University Press:  10 July 2009

J. Van Sickle  and
R. J. Phelps
J. Van Sickle
Affiliation:
Department of Biological Sciences, University of Zimbabwe, PO Box MP167, Harare, Zimbabwe
R. J. Phelps
Affiliation:
Department of Biological Sciences, University of Zimbabwe, PO Box MP167, Harare, Zimbabwe
Get access Rights & Permissions [Opens in a new window]

Abstract

Age structures and reproductive anomalies of two field populations of Glossina pallidipes Austen in Zimbabwe were compared. One population was treated with insecticide sprayed on odour-baited targets, while the other was left undisturbed. Both populations were sampled with F3 prism-type traps. Capture probabilities were higher for females in early stages of pregnancy than for those in later stages. Per-capita mortality rates were estimated from age distributions which had been corrected for rate of increase. The mortality rate steadily increased over time in the insecticide-treated area but remained roughly constant in the undisturbed area. Estimates of mortality had wide confidence intervals, and the mortality model is critically reviewed. No evidence was seen in the treated population for an increased incidence of abortion or other reproductive anomalies, or for a decrease in insemination rate.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 78 , Issue 1 , March 1988 , pp. 51 - 61
Copyright
Copyright © Cambridge University Press 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bard, Y. (1974). Nonlinear parameter estimation.—341 pp. New York, Academic Press.Google Scholar
Caughley, G. (1977). Analysis of vertebrate populations.—234 pp. New York, Wiley.Google Scholar
Challier, A. (1965). Amélioration de la méthode de détermination de l'âge physiologique des glossines. Etudes faites sur Glossina palpalis gambiensis Vanderplank, 1949.—Bull. Soc. Path. exot. 58, 250–259.Google Scholar
Challier, A. & Turner, D. A. (1985). Methods to calculate survival rate in tsetse fly (Glossina) populations.—Annls Soc. belge Méd. trop. 65, 191–197.Google Scholar
Dar, F. K., Lighthart, G. S. & Wilson, A. J. (1972). Cryopreservation of pathogenic African trypanosomes in situ: metacyclic and bloodstream forms.—J. Protozool. 19, 494–497.Google Scholar
Denlinger, D. L. & Ma, W. C. (1974). Dynamics of the pregnancy cycle in the tsetse Glossina morsitans.—J. Insect Physiol. 20, 1015–1026.Google Scholar
Glasgow, J. P. (1963). The distribution and abundance of tsetse.—241 pp. Oxford, Pergamon Press.Google Scholar
Gouteux, J. P. (1982). Analyse des groupes d'âge physiologique des femelles de glossines. Calcul de la courbe de survie, du taux de mortalité des âges maximal et moyen.—Cah. ORSTOM, Sér. Entomol. méd. Parasitol. 20, 189–197.Google Scholar
Leegwater-van der Linden, M. E. (1983). The rearing of the tsetse fly Glossina pallidipes Austen.—138 pp. D.Sc. thesis, Univ. Amsterdam.Google Scholar
Madubunyi, L. C. (1975). A technique for detecting abortions in wild populations of Glossina species.—pp. 477–485 in Sterility principle for insect control 1974. Proceedings of the symposium on the sterility principle for insect control jointly organized by the IAEA and the FAO of the United Nations and held in Innsbruck, 22–26 July 1974.—622 pp. Vienna, Int. Atom. Energy Ag. (STI/PUB/377).Google Scholar
Minter, D. M. & Goedbloed, E. (1971). The preservation in liquid nitrogen of tsetse flies and phlebotomine sandflies naturally infected with trypanosomatid flagellates.—Trans. R. Soc. trop. Med. Hyg. 65, 175–181.Google ScholarPubMed
Rogers, D. J., Randolph, S. E. & Kuzoe, F. A. S. (1984). Local variation in the population dynamics of Glossina palpalis palpalis (Robineau-Desvoidy) (Diptera: Glossinidae). I. Natural population regulation.—Bull. ent. Res. 74, 403–423.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. R. ent. Soc. Lond. 112, 221–238.Google Scholar
Saunders, D. S. (1962). Age determination for female tsetse flies and the age compositions of samples of Glossina pallidipes Aust., G. palpalis fuscipes Newst. and G. brevipalpis Newst.—Bull. ent. Res. 53, 579–595.Google Scholar
Saunders, D. S. (1967). Survival and reproduction in a natural population of the tsetse fly, Glossina palpalis palpalis (Robineau-Desvoidy).—Proc. R. ent. Soc. Lond. (A) 43, 129–137.Google Scholar
Steel, R. G. D. & Torrie, J. H. (1980). Principles and procedures of statistics.—2nd edn, 633 pp. New York, McGraw-Hill.Google Scholar
Taylor, F. (1979). Convergence to the stable age distribution in populations of insects.—Am. Nat. 113, 511–530.Google Scholar
Timischl, W. & van der Vloedt, A. M. V. (1984). Computer based evaluation of laboratory data in the rearing of tsetse flies.—Z. angew. Ent. 97, 21–29.Google Scholar
Turner, D. A. & 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.Google Scholar
Vale, G. A. & Phelps, R. J. (1978). Sampling problems with tsetse flies (Diptera: Glossinidae).—J. appl. Ecol. 15, 715–726.CrossRefGoogle Scholar
Vale, G. A., Lovemore, D. F., Flint, S. & Cockbill, G. F. (1988). Odour-baited targets to control tsetse flies, Glossina spp. (Diptera: Glossinidae), in Zimbabwe.—Bull. ent. Res. 78, 31–49.Google Scholar