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The effect of larval rearing conditions on flight performance in females of the African armyworm, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae)

Published online by Cambridge University Press:  10 July 2009

W. E. Parker  and
A. G. Gatehouse
W. E. Parker
Affiliation:
School of Animal Biology, University College of North Wales, Bangor, Gwynedd, LL57 2UW, UK
A. G. Gatehouse
Affiliation:
School of Animal Biology, University College of North Wales, Bangor, Gwynedd, LL57 2UW, UK
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Abstract

The effect of quantitative and qualitative differences in maize leaf fed to larvae of Spodoptera exempta (Walker), and of larval density, on flight duration in female moths was investigated using a tethered-flight technique. Neither food deprivation nor diets of water-stressed maize influenced the proportion of moths flying for long periods. However, a significant increase in the incidence of long flights was recorded in moths from larvae reared at high densities. Significant differences were observed in the weights and sizes of moths from the different larval treatments. Wing-loading was shown to be a function of moth weight, with lighter moths having lower wing-loadings. However, wing-loadings of long-flying moths and those of short-fliers were similar, and it is concluded that the migratory potential of females of S. exempta cannot be predicted from moth weight or morphometric data. A feature of the results was the variable proportion of long-flying moths in the test and control groups, irrespective of larval treatment. Re-examination of the data showed that a high incidence of long flights was evident in the experimental insects at approximately one-generation intervals, and it is suggested that there is a major genetic component in the determination of flight capacity in this species.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 75 , Issue 1 , March 1985 , pp. 35 - 48
Copyright
Copyright © Cambridge University Press 1985

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References

Aidley, D. J. (1974). Migratory capability of the African armyworm moth, Spodoptera exempta (Walk.).—E. Afr. agric. For. J. 40, 202–203.CrossRefGoogle Scholar
Aidley, D. J. & Lubega, M. (1979). Variation in wing length of the African armyworm, Spodoptera exempta in East Africa during 1973–74.—J. appl. Ecol. 16, 653–662.CrossRefGoogle Scholar
Blair, B. W., Rose, D. J. W. & Law, A. B. (1980). Synoptic weather associated with outbreaks of African armyworm, Spodoptera exempta (Walker) (Lepidoptera, Noctuidae), in Zimbabwe during 1973 and 1976/77.—Zimbabwe J. agric. Res. 18, 95–110.Google Scholar
Blais, J. R. (1953). Effects of the destruction of the current year's foliage of balsam fir on the fecundity and habits of flight of the spruce budworm.—Can. Ent. 85, 446–448.CrossRefGoogle Scholar
Brown, E. S. (1970). Control of the African armyworm, Spodoptera exempta (Walk.)—an appreciation of the problem.—E. Afr. agric. For. J. 35, 237–245.CrossRefGoogle Scholar
Brown, E. S., Betts, E. & Rainey, R. C. (1969). Seasonal changes in distribution of the African armyworm, Spodoptera exempta (WIk.) (Lep., Noctuidae), with special reference to eastern Africa.—Bull. ent. Res. 58, 661–728.CrossRefGoogle Scholar
Brown, E. S. & Dewhurst, C. F. (1975). The genus Spodoptera (Lepidoptera, Noctuidae) in Africa and the Near East.—Bull. ent. Res. 65, 221–262.CrossRefGoogle Scholar
Brown, E. S. & Swaine, G. (1966). New evidence on the migration of moths of the African armyworm, Spodoptera exempta (Wlk.) (Lepidoptera, Noctuidae).—Bull. ent. Res. 56, 671–684.CrossRefGoogle Scholar
Den Boer, M.H. (1978). Isoenzymes and migration in the African armyworm Spodoptera exempta (Lepidoptera, Noctuidae).—J. Zool. 185, 539–553.CrossRefGoogle Scholar
Danthanarayana, W. (1976). Environmentally cued size variation in the light-brown apple moth, Epiphyas postvittana (Walk.) (Tortncidae), and its adaptive value in dispersal.—Oecologia 26, 121–132.CrossRefGoogle Scholar
Derr, J. A. (1980). Coevolution of the life history of a tropical seed-feeding insect and its food-plants.—Ecology 61, 881–892.CrossRefGoogle Scholar
Dingle, H. (1982). Function of migration in the seasonal synchronization of insects.—Entomologia exp. appl. 31, 36–48.CrossRefGoogle Scholar
Dingle, H. & Arora, G. (1973). Experimental studies of migration in bugs of the genus Dysdercus.—Oecologia 12, 119–140.CrossRefGoogle ScholarPubMed
Faure, J. C. (1943). Phase variation in the armyworm, Laphygma exempta (Walk.).—Sci. Bull. Dep. Agric. For. UN. S. Afr. no. 234, 17 ppGoogle Scholar
Gatehouse, A. G. & Hackett, D. S. (1980). A technique for studying flight behaviour of tethered Spodoptera exempta moths.—Physiol. Entomol. 5, 215–222.CrossRefGoogle Scholar
Gunn, A. & Gatehouse, A. G. (1985). Effects of larval and adult food and water uptake on reproduction in the African armyworm, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae).—Physiol. Ent. 10.CrossRefGoogle Scholar
Haggis, M. J. (1984). Distribution, frequency of attack and seasonal incidence of the African armyworm Spodoplera exempta (Walk.) (Lep.: Noctuidae) with particular reference to Africa and southwestern Arabia.—Report, Tropical Development & Research Institute no. L69, 116 pp.Google Scholar
Iwao, S. (1962). Studies on the phase variation and related phenomena in some Lepidopterous insects.—Mem. Coll. Agric. Kyoto Univ. no. 84, 80 pp. (Seen in Rev. appl. Ent. (A) 51, 671).Google Scholar
Johnson, C. G. (1969). Migration and dispersal of insects by flight—763 pp London, Methuen.Google Scholar
Jones, M. M., Osmond, C. B. & Turner, N. C. (1980). Accumulation of solutes in leaves of sorghum and sunflower in response to water deficits.—Aust. J. Plant Physiol. 7, 193–205.Google Scholar
Kisimoto, R. (1956). Effect of crowding during the larval period on the determination of the wing-form of an adult planthopper.—Nature, Lond. 178, 641–642.CrossRefGoogle Scholar
Khasimuddin, S. (1981). Phase variation and ‘off-season’ survival of the African armyworm, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae).—Insect Sci. Applic. 1, 357–360.Google Scholar
Lees, A. D. (1966). The control of polymorphism in aphids.—Adv. Insect Physiol. 3, 207–277.CrossRefGoogle Scholar
Levitt, J. (1980). Responses of plants to environmental stresses—607 pp New York & London, Academic Press.Google Scholar
Long, D. B. (1959). Observations on adult weight and wing area in Plusia gamma L. and Pieris brassicae L. in relation to larval population density.—Entomologia exp. appl. 2, 241–248.CrossRefGoogle Scholar
Matthée, J. J. (1945). Biochemical differences between the solitary and gregarious phases of locusts and noctuids.—Bull. ent. Res. 36, 343–371.CrossRefGoogle ScholarPubMed
Mattson, W. J. (1980). Herbivory in relation to plant nitrogen content.—Annu. Rev. Ecol. & Syst. 11, 119–161.CrossRefGoogle Scholar
Parker, W. E. (1983). An experimental study on the migration of the African armyworm moth, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae).—211 pp. Ph.D. thesis, Univ. Wales.Google Scholar
Parker, W. E. & Gatehouse, A. G. (1985). Genetic factors controlling flight performance and migration in the African armyworm moth, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae).—Bull. ent. Res. 75, 49–63.CrossRefGoogle Scholar
Pedgley, D. E., Reynolds, D. R., Riley, J. R. & Tucker, M. R. (1982). Flying insects reveal small-scale wind systems.—Weather, Lond. 37, 295–306.CrossRefGoogle Scholar
Riley, J. R., Reynolds, D. R. & Farmery, M. J. (1983). Observations of the flight behaviour of the armyworm moth, Spodoptera exempta, at an emergence site using radar and infra-red optical techniques.—Ecol. Entomol. 8, 395–418.CrossRefGoogle Scholar
Rose, D. J. W. (1972). Dispersal and quality in populations of Cicadulina species (Cicadellidae).—J. Anim. Ecol. 41, 589–609.CrossRefGoogle Scholar
Rose, D. J. W. (1975). Field development and quality changes in successive generations of Spodoptera exempta Wlk., the African armyworm.—J. appl. Ecol. 12, 727–739.CrossRefGoogle Scholar
Rose, D. J. W. (1979). The significance of low-density populations of the African armyworm Spodoptera exempta (Walk.).—Phil. Trans. R. Soc. (B) 287, 393–402.Google Scholar
Rose, D. J. W. & Dewhurst, C. F. (1979). The African armyworm, Spodoptera exempta—congregations of moths in trees before flight.—Entomologia exp. appl. 26, 346–348.CrossRefGoogle Scholar
Scriber, J. M. (1977). Limiting effects of low leaf-water content on the nitrogen utilization, energy budget and larval growth of Hyalophora cecropia (Lepidoptera: Saturniidae).—Oecologia 28, 269–287.CrossRefGoogle ScholarPubMed
Utida, S. (1972). Density dependent polymorphism in the adult of Callosobruchus maculatus (Coleoptera: Bruchidae).—J. stored Prod. Res. 8, 111–126.CrossRefGoogle Scholar
Whellan, J. A. (1954). The African army worm and its control.—Rhodesia agric. J. 51, 415–427.Google Scholar
Yarro, J. (1980). Studies on Spodoptera exempta in outbreak areas.—Ann. Rep. Cent. Insect Physiol. Ecol. no. 7, 11–12.Google Scholar
Zaher, M. A. & Moussa, M. A. (1961). Effects of population density on Prodenia litura (Lepidopt era: Noctuidae).—Ann. ent. Soc. Am. 54, 145–149.CrossRefGoogle Scholar