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Outbreaks and recession populations of the desert locust Schistocerca gregaria (Forsk.)

Published online by Cambridge University Press:  10 July 2009

Jeremy Roffey
Affiliation:
Anti-Locust Research Centre (Ministry of Overseas Development), College House, Wrights Lane, London
George Popov
Affiliation:
Anti-Locust Research Centre (Ministry of Overseas Development), College House, Wrights Lane, London
C. F. Hemming
Affiliation:
Anti-Locust Research Centre (Ministry of Overseas Development), College House, Wrights Lane, London

Extract

New evidence on the nature of recession populations of the desert locust, Schistocerca gregaria (Forsk.), and on the nature and role of its outbreaks is presented. It is shown that the hopper bands and swarms reported during the 1963–67 recession differed qualitatively and quantitatively from those characteristic of plague periods and were numerically much smaller than some low density non-swarming populations. Gregarisation frequently occurs in the latter and may be on a scale sufficient to give rise to an outbreak; in turn outbreaks may lead to plague upsurges.

Type
Research Paper
Copyright
Copyright © Cambridge University Press 1970

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References

Albrecht, F. O. (1962). Some physiological and ecological aspects of locust phases.—Trans. R. ent. Soc. Land. 114, 335375.CrossRefGoogle Scholar
Ellis, P. E. (1959). Learning and social aggregation in locust hoppers.—Anim. Behav. 7, 91106.CrossRefGoogle Scholar
F.A.O. (1968). Report on Locust Meteorology Training Course.—F.A.O. Prog. Rep. no. UNDP (SF) DL/TC/16, 32 pp.Google Scholar
Greathead, D. J. (1966). A brief survey of the effects of biotic factors on populations of the desert locust.—J. appl. Ecol. 3, 239250.CrossRefGoogle Scholar
Johnston, H. B. (1926). A further contribution to our knowledge of the bionomics and control of the migratory locust (Schistocerca gregaria Forsk.) (peregrina, Oliv.), in the Sudan.—Ent. Bull. Wellcome trop. Res. Labs Sudan no. 22, 14 pp.Google Scholar
Joyce, R. J. V. (1962). Report of the Desert Locust Survey 1955–1961.—112 pp. Nairobi, E.Afr. Common Serv. Org.Google Scholar
Kennedy, J. S. (1939). The behaviour of the desert locust (Schistocerca gregaria (Forsk.)) (Orthopt.) in an outbreak centre.—Trans. R. ent. Soc. Lond. 89, 385542.CrossRefGoogle Scholar
Key, K. H. L. (1950). A critique on the phase theory of locusts.—Q. Rev. Biol. 25, 363407.Google Scholar
Papillon, M. (1968 a). Facteurs ecologiques et phases chez le criquet pèlerin, Schistocerca gregaria (Forsk.). I—Influence de la photoperiode et de la temperature.—Bull. biol. Fr. Belg. 102, 85139.Google Scholar
Papillon, M. (1968 b). Facteurs ecologiques et phases chez le criquet pèlerin, Schistocerca gregaria (Forsk.). III—Influence de la température d'incubation.—Bull. biol. Fr. Belg. 102, 448480.Google Scholar
Pasquier, R. (1942). Les sauterelles pèlerines.—Agria, Algiers no. 99, 12 pp.Google Scholar
Pasquier, R. (1952). Quelques propositions de terminologie acridologique.—Annls Inst. agric. Algér. 6, fasc. 6, 16 pp.Google Scholar
Pedgley, D. E. & Symmons, P. M. (1970). Weather and the locust upsurge.—Weather, Lond. 32, 484492.Google Scholar
Popov, G. B. (1965). Review of the work of the Desert Locust Ecological Survey June 1958–March 1964 and the considerations and conclusions arising from it.—F.A.O. Progr. Rep. no. UNSF/DL/ES/8, 80 pp.Google Scholar
Rainey, R. C. (1963). Meteorology and the migration of desert locusts: applications of synoptic meteorology in locust control.—Tech. Notes Wld met. Org. no. 54 (Anti-Locust Mem. no. 7), 115 pp.Google Scholar
Roffey, J. & Popov, G. B. (1968). Environmental and behavioural processes in a desert locust outbreak.—Nature, Lond. 219, 446450.Google Scholar
Stower, W. J. (1959). The colour patterns of hoppers of the desert locust (Schistocerca gregaria Forskål).—Anti-Locust Bull. no. 32, 75 pp.Google Scholar
Stower, W. J., Davies, D. E. & Jones, I. B. (1960). Morphometric studies of the desert locust, Schistocerca gregaria (Forsk.)J. Anim. Ecol. 29, 309339.CrossRefGoogle Scholar
Uvarov, B. P. (1921). A revision of the genus Locusta, L. (=Pachytylus, Fieb.), with a new theory as to the periodicity and migrations of locusts.—Bull. ent. Res. 12, 135163.Google Scholar
Uvarov, B. P. (1923). Notes on locusts of economic importance, with some new data on the periodicity of locust invasion.—Bull. ent. Res. 14, 3139.Google Scholar
Uvarov, B. P. (1957). The aridity factor in the ecology of locusts and grasshoppers of the Old World.—In Arid Zone Research—VIII. Human and animal ecology: reviews of research, pp. 164198. Paris, UNESCO.Google Scholar
Uvarov, Sir B. (1966). Grasshoppers and locusts. A handbook of general acridology…Volume 1.—xi+481 pp. Cambridge, Univ. Pr.Google Scholar
Varma, B. K. & Sharma, T. R. (1966). Effects of cyclone on locusts.—Indian J. Ent. 28, 1432.Google Scholar
Waloff, Z. (1966). The upsurges and recessions of the desert locust plague: an historical survey.—Anti-Locust Mem. no. 8, 111 pp.Google Scholar