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Studies on the Behaviour of Adult Australasian Anophelines

Published online by Cambridge University Press:  10 July 2009

F. H. S. Roberts
Affiliation:
Animal Health Station, Yeerongpilly.
P. J. O'Sullivan
Affiliation:
Animal Health Station, Yeerongpilly.

Extract

Observations are recorded on the habits and behaviour of wild adult A. amictus hilli and A. punctulatus farauti at Cairns, North Queensland, and of the two subspecies and intermediate forms of A. punctulatus in New Guinea.

The most important points determined, which bear on the control of adults of A. punctulatus, are:—

(1) Females disperse from the breeding area shortly after emergence. During the day, they are rarely found indoors in any numbers, but hide away in moist, sheltered places in the bush in the vicinity of the source of the blood-meal. Fertilisation of the female takes place here, and these diurnal resting places are vacated only for the purposes of feeding and oviposition.

(2) Both before and after feeding, females rest on the walls, etc., of huts and houses, which they readily enter. There is some evidence that the normal flight is dose to the ground, and only comparatively small numbers enter houses built several feet off the ground.

(3) Activity does not usually commence until just after dark, and the peak of abundance occurs in the early hours of the morning.

(4) Females may disperse at least one mile from their breeding grounds in search of a blood-meal.

(5) In New Guinea there is a distinct preference for the native.

(6) Whilst A. pundulatus farauti does not show any marked preference for man, animal or bird, A. pundulatus pundulatus has very definite androphilous tendencies.

The habits of A. amictus hilli are broadly similar to those of A. pundulatus farauti, but differ in important details. It does not rest indoors during the day, but its favoured outdoor habitat awaits determination. Only a few females were found at Cairns in the bush diurnal resting places used by A. pundulatus farauti, whilst the large numbers observed on the breeding area were there for the purposes of oviposition. Fertilisation takes place in the breeding area, where the males remain. There also appears to be a different nocturnal periodicity from that observed for A. pundulatus farauti.

An attempt was made to determine the ages of the females captured at night and during the day by means of the criteria of ovary development, wing condition, presence of blood and of spermatozoa. The interpretation of these criteria was assisted by observations on bred A. pundulatus pundulatus.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1948

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References

Christophers, S. R., Sinton, J. A. & Covell, G. (1944). How to do a malaria survey. 4th edn.—Hlth Bull. no. 4 (Malar. Bur. no. 6). 156 pp.Google Scholar
Haddow, A. J. (1942). The mosquito fauna and climate of native huts at Kisumu, Kenya.—Bull. ent. Res., 33, pp. 91142.Google Scholar
Heydon, G. A. M. (1923). Malaria at Rabaul.—Med. J. Aust., 15 Dec., 1923, pp. 625633.CrossRefGoogle Scholar
Lee, D. J. & Woodhill, A. R. (1944). The Anopheline mosquitoes of the Australasian Region.—Monogr. Dep. Zool. Univ. Sydney, no. 2, xii, 209 pp.Google Scholar
Roberts, F. H. S. (1943). Observations on Anopheles annulipes Walk, as a possible vector of malaria. I. The relative susceptibility of A. annulipes and A. punctulatus var. moluccensis Sw. to experimental infection with malaria parasites.—Aust. J. exp. Biol. med. Sci., 21, pp. 259262.Google Scholar
Russell, P. F. (1932). Daytime resting places of Anopheline mosquitoes in the Philippines.—Proc. ent. Soc. Wash., 34, pp. 129138.Google Scholar
Senior White, R. (1945). House spraying with DDT and pyrethrum extract compared.—J. Malar. Inst. India, 6, pp. 8387.Google Scholar
Swellengrebel, N. H. & Rodenwaldt, E. (1932). Die Anophelen von Niederländisch-Ostindien.—Jena, G. Fischer, 242 pp.Google Scholar
Thompson, R. C. Muirhead. (1941). Studies on the behaviour of Anopheles minimus. Part V. The behaviour of adults in relation to feeding and resting in houses.—J. Malar. Inst. India, 4, pp. 217245.Google Scholar
Woodhill, A. R. (1946). Observations on the morphology and biology of the subspecies of Anopheles punctulatus Dönitz.Proc. Linn. Soc. N.S.W., 70, pp. 276287.Google Scholar