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Theoretical rates of increase of gregarious and solitarious populations of the Desert Locust

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Summary

Leslie matrices are used to compare theoretical populations of gregarious and solitarious Desert Locusts, Schistocerca gregaria (Forsk.). Despite their lower fecundity, the synchrony and faster maturation of gregarious populations permit them to have much faster rates of increase than solitarious populations. When realistic mortality estimates are assumed the differences can be very pronounced even when the rates of mortality are the same for both phases; this suggests that the longer period during which solitarious locusts are susceptible to predation is critical. The conclusions are briefly discussed with respect to the genesis and maintenance of locust plagues and the evolutionary significance of gregarisation.

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References

  • Albrecht, F.A.: La densité des populations et la croissance chez Schistocerca gregaria (Forsk.) et Nomadris septemfasciata (Serv.); la mue d'ajustement. J. Agric. Trop. Bot. Appl. 2, 109–192 (1955)

    Google Scholar 

  • Ashall, C., Ellis, P.E.: Studies on numbers and mortality in field populations of the Desert Locust (Schistocerca gregaria Forskal). Anti-Locust Bull. No. 38 (1962)

  • Ballard, E., Mistikawi, A.M., El Zoheiry, M.S.: The Desert Locust Schistocerca gregaria Forsk. In: Min. Agric., Egypt Tech. Sci. Service Bull. p. 110. Cairo: Government Press 1932

    Google Scholar 

  • Dempster, J.P.: The population dynamics of grasshoppers and locusts. Biol. Rev. 38, 490–529 (1963)

    Google Scholar 

  • Greathead, D.J.: A brief survey of the effects of biotic factors on populations of the Desert Locust. J. Appl. Ecol. 3, 239–250 (1966)

    Google Scholar 

  • Highnam, K.C.: Induced changes in the amounts of material in the neurosecretory system of the Desert Locust. Nature (Lond.) 191, 199–200 (1961)

    Google Scholar 

  • Highnam, K.C., Haskell, P.T.: The endocrine system of isolated and crowded Locusta and Schistocerca in relation to oocyte growth, and the effects of flying upon maturation. J. Insect Physiol. 10, 849–864 (1964)

    Google Scholar 

  • Hunter-Jones, P.: Laboratory studies on the inheritance of phase characters in locusts. Anti-Locust Bull. No. 29 (1958)

  • Leslie, P.H.: On the use of matrices in certain population mathematics. Biometrika 33, 183–212 (1945)

    Google Scholar 

  • Loher, W.: The chemical acceleration of the maturation process and its hormonal control in the male of the Desert Locust. Proc. R. Soc. (B) 153, 380–397 (1961)

    Google Scholar 

  • Norris, M.J.: Reproduction in the Desert Locust (Schistocerca gregaria Forsk.) in relation to density and phase. Anti-Locust Bull. No. 13 (1952)

  • Norris, M.J.: Sexual maturation in the Desert Locust (Schistocerca gregaria Forskal) with special reference to the effects of grouping. Anti-Locust Bull. No. 18 (1954)

  • Norris, M.J.: The effects of density and grouping on sexual maturation, feeding and activity in caged Schistocerca gregaria. Colloques Int. Cent. Nat. Rech. Sci. 114, 23–35 (1962a)

    Google Scholar 

  • Norris, M.J.: Group effects on the activity and behaviour of adult males of the Desert Locust (Schistocerca gregaria Forsk.) in relation to sexual maturation. Anim. Behav. 10, 275–291 (1962b)

    Google Scholar 

  • Papillon, M.: Facteurs ecologiques et phases chez le criquet pelerin Schistocerca gregaria (Forsk.). III. Influence de la temperature d'incubation. Bull. Biol. Fr. Belg. 102, 448–480 (1968)

    Google Scholar 

  • Roffey, J., Popov, G.B.: Environmental and behavioural processes in a desert locust outbreak. Nature (Lond.) 219, 446–450 (1968)

    Google Scholar 

  • Roffey, J., Popov, G., Himming, C.F.: Outbreaks and recession populations of the desert locust Schistocerca gregaria (Forsk.). Bull. Ent. Res. 59, 675–680 (1970)

    Google Scholar 

  • Stower, W.J., Greathead, D.J.: Numerical changes in a population of the Desert Locust, with special reference to factors responsible for mortality. J. Appl. Ecol. 6, 203–235 (1969)

    Google Scholar 

  • Usher, M.B.: Developments in the Leslie Matrix Model. In: Mathematical models in ecology (J.R.N. Jeffers, ed.), pp. 29–60. London: Blackwells 1972

    Google Scholar 

  • Waloff, N.: Some thoughts on the studies of population dynamics of acridids. In: Proceedings of the International Study Conference on the Current and Future Problems of Acridology, London, 1970 (C.F. Hemming, T.H.C. Taylor, eds.), pp. 355–358. London: Centre for Overseas Pest Research 1972

    Google Scholar 

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  1. Centre for Overseas Pest Research, College House, Wrights Lane, W8 5SJ, London, United Kingdom

    Robert A. Cheke

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  1. Robert A. Cheke
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Cheke, R.A. Theoretical rates of increase of gregarious and solitarious populations of the Desert Locust. Oecologia 35, 161–171 (1978). https://doi.org/10.1007/BF00344729

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  • DOI: https://doi.org/10.1007/BF00344729

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