Hostname: page-component-6bf8c574d5-l72pf Total loading time: 0 Render date: 2025-03-04T14:56:21.163Z Has data issue: false hasContentIssue false
  • English
  • Français

Age determination for female tsetse flies and the age compositions of samples of Glossina pallidipes Aust., G. palpalis fuscipes Newst. and G. brevipalpis Newst.

Published online by Cambridge University Press:  10 July 2009

D. S. Saunders
D. S. Saunders
Affiliation:
Department of Zoology, Edinburgh University.
Get access Rights & Permissions [Opens in a new window]

Extract

The age compositions of samples of females of Glossina pallidipes Aust., G. palpalis fuscipes Newst. and G. brevipalpis Newst., are analysed by means of a method of age determination based upon the changes occurring in the reproductive system during successive gonotrophic cycles. This method of age determination is described in detail.

Females were sampled by three main methods: in traps, by catching on a bait-animal, and on a fly-round. Some flies were also found as resting flies in the undergrowth.

Trap-caught samples of G. pallidipes were older (i.e.), contained a larger proportion of old flies (and a smaller proportion of young flies) than the hand-caught samples. The bait-caught samples were intermediate in age structure. Correlated with the increasing mean age in the hand-caught—bait-caught—trap-caught series was an increase in the proportion of females carrying third-instar larvae and a decrease in the proportion of those carrying eggs. Results with samples of G. palpalis fuscipes and G. brevipalpis were not so well defined.

The results of dissecting teneral and non-teneral nullipars of G. pallidipes and G. palpalis fuscipes indicate that females of the latter are inseminated some time before they take their first blood-meal, but teneral females of G. pallidipes are inseminated when they come to the host to feed or after they have fed.

The relation of the ovarian method of age determination to Jackson's (1946) wing-fray categories in females of G. pallidipes, and the probable epidemiological importance of the samples, are also discussed.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 53 , Issue 3 , October 1962 , pp. 579 - 595
Copyright
Copyright © Cambridge University Press 1962

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

Beklemishev, W. N. [V. N.], Detinova, T. S. & Polovodova, V. P. (1959). Determination of physiological age in Anophelines and of age distribution in Anopheline populations in the USSR.—Bull. World Hlth Org. 21 pp. 223–232.Google ScholarPubMed
Bertram, D. S. & Samarawickrema, W. A. (1958). Age determination for individual Mansonioides mosquitoes.—Nature, Lond. 182 pp. 444–446.CrossRefGoogle ScholarPubMed
Bursell, E. (1961). The behaviour of tsetse flies (Glossina swynnertoni Austen) in relation to problems of sampling.—Proc. R. ent. Soc. Lond. (A) 36 pp. 9–20.Google Scholar
Buxton, P. A. (1955). The natural history of tsetse flies.—Mem. Lond. Sch. Hyg. trop. Med. no. 10, 816 pp. London, Lewis.Google Scholar
Cockings, K. L. (1960). Laboratory maintenance of Glossina pallidipes.—Rep. E. Afr. Tryp. Res. Org. 1959 pp. 13–18.Google Scholar
Detinova, T. S. (1949). Physiological changes of ovaries in females of Anopheles maculipennis. [In Russian.]—Med. Parazit. 18 p. 410. (Cited in Detinova, 1959.)Google Scholar
Detinova, T. S. (1959). Age grouping methods in Diptera of medical importance. Course in advanced entomological techniques applied to malaria eradication.—WHO/Mal/238.Google Scholar
Gillies, M. T. (1958). A review of some recent Russian publications on the technique of age determination in Anopheles.—Trop. Dis. Bull. 55 pp. 713–721.Google ScholarPubMed
Harris, R. H. T. P. (1932). Some facts and figures regarding the attempted control of Glossina pallidipes in Zululand.—S. Afr. J. Sci. 29 pp. 495–507.Google Scholar
Isherwood, F. (1957). The resting sites of Glossina swynnertoni Aust. in the wet season.—Bull. ent. Res. 48 pp. 601–606.CrossRefGoogle Scholar
Jack, R. W. (1939). Studies in the physiology and behaviour of Glossina morsitans, Westw.—Mem. Dep. Agric. S. Rhod. no. 1, 203 pp.Google Scholar
Jack, R. W. (1941). Further studies in the physiology and behaviour of Glossina morsitans, Westw.—Mem. Dep. Agric. S. Rhod. no. 3, 54 pp.Google Scholar
Jackson, C. H. N. (1933a). The causes and implications of hunger in tsetse-flies.—Bull. ent. Res. 24 pp. 443–482.CrossRefGoogle Scholar
Jackson, C. H. N. (1933b). On a method of marking tsetse flies.—J. Anim. Ecol. 2 pp. 289–290.CrossRefGoogle Scholar
Jackson, C. H. N. (1946). An artificially isolated generation of tsetse flies (Diptera).—Bull. ent. Res. 37 pp. 291–299.CrossRefGoogle ScholarPubMed
Mellanby, H. (1937). Experimental work on reproduction hi the tsetse fly, Glossina palpalis.—Parasitology 29 pp. 131–141.CrossRefGoogle Scholar
Mellanby, K. (1936). Experimental work with the tsetse-fly, Glossina palpalis, in Uganda.—Bull. ent. Res. 27 pp. 611–632.CrossRefGoogle Scholar
Mellanby, K. (1937). The reproductive cycle in Glossina morsitans and Glossina swynnertoni.—Parasitology 29 p. 142.CrossRefGoogle Scholar
Morris, K. R. S. (1960). Trapping as a means of studying the game tsetse, Glossina pallidipes Aust.—Bull. ent. Res. 51 pp. 533–557.CrossRefGoogle Scholar
Nash, T. A. M. (1955). The fertilisation of Glossina palpalis in captivity.—Bull, ent. Res. 46 pp. 357–368.CrossRefGoogle Scholar
Polovodova, V. P. (1947). Age changes in the female reproductive system of Anopheles and age composition of mosquito populations. [In Russian.] Thesis, Rostov-on-Don. (Cited in Detinova, 1959.)Google Scholar
Saunders, D. S. (1960a). Ovaries of Glossina morsitans.—Nature, Lond. 185 pp. 121–122.CrossRefGoogle ScholarPubMed
Saunders, D. S. (1960b). Determination of physiological age for female Glossina morsitans.—Nature, Lond. 186 p. 651.CrossRefGoogle ScholarPubMed
Saunders, D. S. (1960c). 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 pp. 221–238.CrossRefGoogle Scholar
Smith, I. M. & Rennison, B. D. (1961). Studies of the sampling of Glossina pallidipes Aust. I. The numbers caught daily on cattle, in Morris traps and on a fly-round.—Bull. ent. Res. 52 pp. 165–182.CrossRefGoogle Scholar
Squire, F. A. (1952). On the sex ratio in Glossina.—Bull. ent. Res. 43 pp. 231–235.CrossRefGoogle Scholar
Symes, C. B. & Southby, R. (1938). The reduction of G. palpalis in a lake shore area by the “block” method. Nairobi. (Cited in Buxton, 1955.)Google Scholar
Vanderplank, F. L. (1947). Experiments in the hybridisation of tsetse-flies (Glossina, Diptera) and the possibility of a new method of control.—Trans. R. ent. Soc. Lond. 98 pp. 1–18.CrossRefGoogle Scholar