Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-28T02:01:35.279Z Has data issue: false hasContentIssue false
  • English
  • Français

Progeny Production and Sex Ratios of Field Populations of the Parasitoids Cotesia Flavipes and Cotesia Sesamiae Reared from Gramineous Stemborers in Coastal Kenya

Published online by Cambridge University Press:  19 September 2011

Charles O. Omwega  and
William A. Overholt
Charles O. Omwega
Affiliation:
International Centre of Insect Physiology and Ecology, P.O. Box 30772, Nairobi, Kenya
William A. Overholt
Affiliation:
International Centre of Insect Physiology and Ecology, P.O. Box 30772, Nairobi, Kenya
Get access

Abstract

Progeny production and sex ratios of the parasitoids Cotesia sesamiae (Cameron) (Hymenoptera: Braconidae) and its exotic congener Cotesia flavipes Cameron (Hymenoptera: Braconidae) emerging from three species of field-collected stemborers were compared. There were no significant differences in numbers of progeny of the two parasitoids from the African stemborers, Chilo orichalcociliellus (Strand) (Lepidoptera: Pyralidae) and Sesamia calamistis Hampson (Lepidoptera: Noctuidae). Cotesia flavipes produced more progeny than C. sesamiae on large larvae of its coevolved Asian host, Chilo partellus (Swinhoe). No significant differences in the number of parasitoid progeny were observed for different-sized Ch. orichalcociliellus or S. calamistis larvae. These data suggest that under field conditions, Co. flavipes may be superior to Co. sesamiae as a parasitoid of its co-evolved host, Ch. partellus.

Keywords

stemborerparasitoidprogenysex ratiosChilo partellusChilo orichalcociliellusCotesia flavipesCotesia sesamiaeSesamia calamistisforeur de tigesparasitoïdeprogéniturerapport des sexesChilo partellusChilo orichalcociliellusCotesia flavipesCotesia sesamiaeSesamia calamistis
Type
Articles
Information
International Journal of Tropical Insect Science , Volume 17 , Special Issue 1: Ecology and Management of Tropical Gramineous Stemborers , March 1997 , pp. 137 - 142
Copyright
Copyright © ICIPE 1997

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

Appert, J., Betbeder-Matibet, M. and Ranaivosoa, H. (1969) Vingt années de lutte biologique. L'Agronomie Tropical 24, 555–572.Google Scholar
Bleszynski, S. (1970) A revision of the world species o. Chilo Zincken (Lepidoptera: Pyralidae). Bull. Brit. Mus. Nat. Hist, Entomol. 25, 101–195.Google Scholar
Breniere, J. and Bordat, D. (1982) Interet et difficultes de la lutte biologique par introduction d'entomophages—cas des foreurs du riz en Afrique. Agronomic Tropicale 37, 203–206.Google Scholar
CIBC (1968–1972) Reports of Work Carried Out, Commonwealth Institute of Biological Control.Google Scholar
Conlong, D. E. (1994) A review and perspectives for biological control of the African sugarcane stalkbore. Eldana saccharina Walker (Lepidoptera: Pyralidae). Agric, Ecosyst. Environ. 48, 9–16.CrossRefGoogle Scholar
Kfir, R. (1994) Attempts at biological control of the stembore. Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) in South Africa. African Entomology 2, 67–68.Google Scholar
Mbapila, J. (1994) Laboratory life tables of Cotesia spp. reared at different temperatures on Chilo partellus, p. 31. 1994 ICIPE Annual Report. ICIPE Science Press.Google Scholar
Nagarkatti, S. and Nair, K. R. (1973) The influence of wild and cultivated Gramineae and Cyperaceae on populations of sugarcane borers and their parasites in north India. Entomophaga 18, 419–430.CrossRefGoogle Scholar
Ngi-Song, A. J., Overholt, W. A. and Ayertey, J. N. (1995) Suitability of African gramineous stemborers for development o. Cotesia flavipes and C. sesamiae (Hymenoptera: Braconidae). Environ. Entomol 24, 978–984.CrossRefGoogle Scholar
Ngi-Song, A. J., Overholt, W. A., Njagi, P. G. N., Dicke, M., Ayertey, J. N. and Lwande, W. (1996) Volatile infochemicals used in host and host habitat location b. Cotesia flavipes Cameron and Cotesia sesamiae (Cameron) (Hymenoptera: Braconidae), larval parasitoids of stemborers on graminae. J. Chem. Ecol. 22, 307–323.CrossRefGoogle Scholar
Ochieng, R. S., Onyango, F. O. and Bungu, M. D. O. (1985) Improvement of techniques for mass culture o. Chilo partellus (Swinhoe). Insect Sci. Applic. 6, 425–428.Google Scholar
Omwega, C. O., Kimani, S. W., Overholt, W. A. and Ogol, C. K. P. O. (1995) Evidence of the establishment o. Cotesia flavipes (Hymenoptera: Braconidae) in continental Africa. Bull. Entomol. Res. 85, 525–530.CrossRefGoogle Scholar
Overholt, W. A., Ngi-Song, A. J., Kimani, S. W., Mbapila, J., Lammers, J. P. and Kioko, E. (1994a) Ecological considerations ofthe introduction of Cotesia flavipes Cameron (Hymenoptera: Braconidae) for biological control of Chilo partellus (Swinhoe)(Lepidoptera: Pyralidae), in Africa. Biocontr. News and Info. 15, 19–24.Google Scholar
Overholt, W. A., Ochieng, J. O., Lammers, P. and Ogedah, K. (1994b) Rearing and field release methods for Cotesia flavipes Cameron (Hymenoptera: Braconidae), a parasitoid of tropical gramineous stemborers. Insect Sci. Applic. 15, 253–259.Google Scholar
Polaszek, A. and Walker, A. K. (1991) Th. Cotesia flavipes species complex; parasitoids of cereal stemborers in the tropics. Redia 74, 335–341.Google Scholar
SAS Institute (1988) User's Guide: Statistics, release 6.03 ed. SAS Institute, Cary, NC.Google Scholar
Skovgård, H. and Päts, P. (1996) Effects of intercropping on maize stemborers and their natural enemies. Bull. Entomol. Res. 86, 599–607.CrossRefGoogle Scholar
Smith, J. W. Jr, Wiedenmann, R. N. and Overholt, W. A. (1993) Parasites of Lepidopteran Stemborers of Tropical Gramineous Plants. ICIPE Science Press, Nairobi. 89 pp.Google Scholar