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Observations of the biotic factors affecting the populations of Epicerura pulverulenta Hampson (Lepidoptera: Notodontidae)

Published online by Cambridge University Press:  19 September 2011

Matthew O. Akanbi
Matthew O. Akanbi
Affiliation:
Forestry Research Institute of Nigeria, P.M.B. 5054, Ibadan, Nigeria
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Abstract

Field and laboratory observations of Epicerura pulverulenta Hampson (Lepidoptera: Notodontidae) elucidated the role of biotic factors in the moth's populations. Natural enemies recorded included. Gryon and Telenomus spp (Hymenoptera: Scelionidae) which parasitized 33% of eggs studied. Also, about 4% of the larvae were parasitized by the dipterous tachinids Zygobothria atropivora Robineau-Desvoidy, Exorista xanthaspis Wiedeman, Blepharella sp., and P. quadrizonula (Thompson); and the perilampid Perilampus dubius (Walker), all solitary endoparasitoids. The predators included Belanogaster dubius Kohl. (Vespidae), Glypsus erubescens Dist. (Pentatomidae), Camponotus maculatus F. (Formicidae) and a kite (bird). They accounted for 12% of larval mortality. In addition, 27% of the 4346 larvae studied developed mycosis caused by Paecilomyces farinosus (Dickson ex Fries) Browne and Smith. A nematode, Hexamermis sp. was also associated with the larvae killing 1.5% of them. High pupal mortality was observed, but the cause was unknown.

Résumé

L'essaie sur le terrain et au laboratoire d' Epicerura pulverulenta Hampson (Lepidoptera:Notodontidae) à élucide le rôle des elements biotiques du peuplement du papillon nocturne (Lepidoptere). Ses adversaires naturels ont été nomme avec abrages: Grycen et Telenomus spp (Hymenoptera: Scelionidae) qui ont parasite 33% des ceufs étudiées. Aussi environ 4% de la larve à été parasite par le diptere tachinaire Zygobothria atropivora Robineau-Desvoidy, Exorista xanthaspis Wiedeman, Blepharella sp., Carcelia (Carcelia) (Thouson), et Perilampus dubius (Walker), tous les endoparasites solitaires. Les predateurs y compris Belanogaster dubius Kohl. (Vespidae), Clypaus erubescens Dist. (Pentatomidae), Camponotus maculatus F. (Formicidae) et un cerfvolant (Oiseau) Chelictinia riocourii (Falconidae) Viellot et Qudart. Ils tenait coupte de 12% de la mortalite de la nymphe. Ajoutez y, 27% de 4346 larvae étudie ont developpe le mycosis occassione par Paceilomycees farinosus (Dickson ex Fries) Broune et Smith. Un nematode, Hexamermis sp. à été aussi associe avec la larve, tuant 1.5 d'eux. La mortalité de la nymphe à été observe maus le motif était inconnu.

Keywords

Epicerura pulverulentabiotic factors
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 6 , December 1986 , pp. 785 - 789
Copyright
Copyright © ICIPE 1986

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References

REFERENCES

Alma, P. J. (1975) Problems of pest assessment: forestry pests. N.Z. Entomologist 6, 22–23.CrossRefGoogle Scholar
Aubreville, A. (1950) Flore Forestiere Soudanoguineene. Societe d'Editions Maritimes et d'Cutre-Mer, A.O.F., Cameroun, A.E.F. Paris.Google Scholar
Giffard, P. L. (1974) L'arbre Dan le Paysage Senegalais. Sylviculture en Zone Tropical Seche. Centre Technique Forestier Tropical, Dakar.Google Scholar
Keay, R. W. J., Onochie, C. F. A. and Stanfield, D. P. (1964) Nigerian Trees, Vol. 1. Nigerian National Press, Apapa.Google Scholar
Kulman, H. M. (1971) Effect of insect defoliation on growth and mortality of trees. A. Rev. Ent. 16, 289–324.CrossRefGoogle Scholar
Okigbo, L. (1965) A Guide to Building Timbers in Nigeria. Federal Department of Forest Research, Ibadan.Google Scholar
Poinar, G. O. Jr (1971) Use of nematodes for microbial control of insects. In Microbial Control of Insects and Mites (Edited by Burges, H. D. and Hussey, N. W.), pp. 181–203. Academic Press, New York.Google Scholar
Samways, M. J. (1981) Biological Control of Pests and Weeds. (Edward) Arnold, London.Google Scholar
Schimiege, D. C. (1963) The feasibility of using a Neoplectanid nematode for control of some forest insect pests. J. econ. Ent. 56, 427–431.CrossRefGoogle Scholar
Taylor, T. A. (1975) Gryon gnidus, a scelionid egg-parasite of Acanthomia tomentosicollis (Coreidae) Hem.: in Nigeria. Entomophaga 20, 129–134.CrossRefGoogle Scholar
Taylor, T. A. and Omoniyi, O. (1970) Variation in number of micropyles in eggs of Acanthomia tomentosicollis (Stal.) (Hemiptera, Coreidae). Nigerian ent. Mag. 2, 70–73.Google Scholar
Vinson, S. B. and Iwantsch, G. F. (1980) Host suitability for insect parasitoids. A. Rev. Ent. 25, 397–419.CrossRefGoogle Scholar