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Seasonal Abundance of Shootflies Infesting Sorghum and their Natural Enemies in Samaru, Nigeria

  • A. A. Adesiyun
Article

Abstract

A total of 1584 young sorghum plants showing typical ‘dead-heart’ symptoms were collected from the field at weekly intervals in 1978 and 1979. From these emerged adult flies belonging to eight families and 17 genera. Members of six of the families are scavengers, while those of the remaining two, Muscidae and Chloropidae, are phytophagous, causing primary or secondary damage to the plants. Three hundred and seventy-five Atherigona soccata adults emerged, representing only 23.7% of the damaged plants. This contrasts with previous records that rate Atherigona soccata as the most important source of ‘dead-heart’ damage in young sorghum plants. Other shootflies perhaps of similar importance, also reared from the plants included Oscinella spp. (986), Scoliophthalmus spp. (344) and Anatrichus erinaceus (160). There were a few other less abundant species.

The numbers of probable parasites and predators of the shootflies that emerged were insignificant, when compared with the extent of damage and the numbers of the shootflies. Damage caused by the shootflies to the early plantings was low and insignificant, reached a peak in mid-season and remained high until the cessation of rain at the end of the season.

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References

  1. Barry D. (1972) Notes on life history of a sorghum shootfly, Atherigona varia soccata. Ann. ent. Soc. Am. 65, 586–589.CrossRefGoogle Scholar
  2. Carter J. B. (1976) Survival of Tipula paludosa (Dipt, Tilu-pidae) larvae after infection with larvae of Megaselia paludosa (Dipt, Phoridae). Entomologist’s mon. Mag. 112, 245.Google Scholar
  3. Deeming J. C. (1971) Some species of Atherigona Rond. (Diptera, Muscidae) from northern Nigeria, with special reference to those injurious to cereal crops. Bull. ent. Res. 61, 133–190.CrossRefGoogle Scholar
  4. Deeming J. C. (1972) A review of the taxonomy of African shootflies of sorghum. In Control of Sorghum Shootfly (Ed. by Jotwani M. G. and Young W. R.), pp. 3–26. Oxford & IBH, New Delhi.Google Scholar
  5. Granados R. G., Granados R. and Jamornaman R. S. (1972) Effect of sorghum shootfly, Atherigona varia soccata Rond, infestation levels on sorghum yield in Thailand. In Control of Sorghum Shootfly (Ed. by Jotwani M. G. and Young W. R.), pp. 107–111. Oxford & IBH, New Delhi.Google Scholar
  6. Jotwani M. G., Marwaha K. K., Srivastava K. M. and Young W. R. (1970) Seasonal incidence of shootfly (Atherigona varia soccata Rond.) in Jowar hybrids at Delhi. Indian J. Ent., 32, 7–15.Google Scholar
  7. Pont, A. C. (1972) A review of the oriental species of Atherigona Rondani (Diptera: Muscidae) of economic importance. In Control of Sorghum Shootfly (Ed. by Jotwani M. G. and Young W. R.), pp. 27–104. Oxford & IBH, New Delhi.Google Scholar
  8. Ramachandra Rao Y. (1924) The genitalia of certain Anthomyiad flies (Atherigona spp.). Rep. Proc. 5th ent. Meeting, Pusa, 1923, pp. 330–335.Google Scholar
  9. Seshu Reddy K. V. and Davies J. C. (1977) Species of Atherigona in Andhra Pradesh. PANS 23, 379–383.CrossRefGoogle Scholar

Copyright information

© ICIPE 1981

Authors and Affiliations

  • A. A. Adesiyun
    • 1
  1. 1.Entomology Section, Department of Crop Protection, Institute for Agricultural ResearchAhmadu Bello UniversityZariaNigeria

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