Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-26T16:42:14.730Z Has data issue: false hasContentIssue false
  • English
  • Français

Life and fertility tables for Spodoptera exempta (Wlk.) (Lepidoptera, Noctuidae)

Published online by Cambridge University Press:  19 September 2011

Jacob G. Yarro
Jacob G. Yarro
Affiliation:
International Centre of Insect Physiology and Ecology, P.O. Box 30772, Nairobi, Kenya
Get access

Abstract

Laboratory reared populations of Spodoptera exempta (Wlk.) had higher net reproductive rate and capacity for increase on maize, Zea mais L. and star grass, Cynodon dactylon (L.) Pers. than on Kikuyu grass, Pennisetum clandestinum Chiov., Guinea grass, Panicum maximum Jacq. and Setaria plicatilis (Hochst.) Hack. These parameters were greatly influenced by the larval mortality, but in all cases they were greater than one demonstrating that S. exempta populations can multiply on all the host plants tested. Since no populations with stable age distributions are known for S. exempta the net reproductive rate is more appropriate than the capacity for increase in estimating its population growth.

Keywords

Spodoptera exemptahost plantsnet reproductive ratecapacity for increasecohort generation timeoutbreakresident populations
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 5 , Issue 4 , August 1984 , pp. 303 - 305
Copyright
Copyright © ICIPE 1984

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

REFERENCES

Bogdan, A. V. (1963) Notes on the damage by armyworm (Laphygma exempta) to grass species at Kitale, Kenya. E. Afr. agric. J. 19, 120–121.CrossRefGoogle Scholar
Brown, E. S. (1962) The African armyworm, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae). A Review of the Literature. Commonwealth Institute of Entomology, London.Google ScholarPubMed
Brown, E. S. (1970) Control of the African armyworm, Spodoptera exempta (Walk.)—appreciation of the problem. E. Afr. agric. J. 35, 237–245.CrossRefGoogle Scholar
Brown, E. S., Betts, E. and Rainey, R. C. (1969) Seasonal changes in distribution of the African armyworm, Spodoptera exempta (Wlk.) (Lep., Noctuidae); with special reference to Eastern Africa. Bull. ent. Res. 58, 661–728.CrossRefGoogle Scholar
Brown, E. S. and Swaine, G. (1966) New evidence and migration of moths of the African armyworm Spodoptera exempta (Wlk.) (Lepidoptera, Noctuidae). Bull. ent. Res. 56, 671–684.CrossRefGoogle Scholar
Deevey, E. S. (1947) Life tables for natural populations of animals. Q. Rev. Biol. 22, 283–314.CrossRefGoogle ScholarPubMed
Faure, J. C. (1943) Phase variation in the armyworm Laphygma exempta (Walk.). Sci. Bull. Dep. Agric. Un. S. Afr. 234, 1–17.Google Scholar
Hattingh, C. C. (1941) The biology and ecology of the armyworm Laphygma exempta and its control in South Africa. Dep. Agric. Afr. Sci. Bull. 217, 1–50.Google Scholar
Hudson, J. R. (1943) Some notes on the armyworm invasion of the Nairobi District in March, 1940. J. E. Africa nat. Hist. Soc. 17, 125–127.Google Scholar
Khasimuddin, S. (1978) Courtship and mating behaviour of the African armyworm Spodoptera exempta (Walker) (Lepidoptera, Noctuidae). Bull. ent. Res. 68, 195–202.CrossRefGoogle Scholar
Khasimuddin, S. and Lubega, M. C. (1979) Behavioural ecology of the African armyworm Spodoptera exempta (Walker) (Lepidoptera: Noctuidae); evidence of successive generations from Kenya. Bull. ent. Res. 69, 275–282.CrossRefGoogle Scholar
Matthee, J. J. (1952) The occurrence of the armyworm in and around Pretoria. J. ent. Soc. 5th. Afr. 15, 122–128.Google Scholar
Persson, B. (1981) Population fluctuations of the African armyworm, Spondoptera exempta (Walker) (Lepidoptera, Noctuidae), in outdoor cages in Kenya. Bull. ent. Res. 71, 269–297.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. 2, 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. Lond. B287, 393–402.Google Scholar
Smith, J. B. and Caldwell, N. E. H. (1947) Armyworm and other noctuid outbreaks during 1946–1947. Qd agric. J. 65, 386–401.Google Scholar
Whellan, J. A. (1958) Report of the Chief Entomologist for the year ending 30th September, 1956. Rhodesia agric. J. 55, 302–313.Google Scholar