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Predicting the Distribution of Chilo partellus (Swinhoe) and Its Parasitoid Cotesia flavipes Cameron in Ethiopia using Correlation, Step-wise Regression and Geographic Information Systems

Published online by Cambridge University Press:  19 September 2011

G. Emana ,
W.A. Overholt ,
E. Kairu ,
L. MacOpiyo  and
G. Zhou
G. Emana
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
W.A. Overholt*
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
E. Kairu
Affiliation:
Kenyatta University, P.O. Box 43844, Nairobi, Kenya
L. MacOpiyo
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
G. Zhou
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
*
E-mail: woverholt@icipe.org
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Abstract

The recent development of geographic information systems (GIS) provides new avenues for analysing spatial patterns in insect populations. Field survey data, along with GIS and statistical models were used to predict the distribution of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) and Cotesia flavipes Cameron (Hymenoptera: Braconidae) in Ethiopia. The results obtained suggested that the distributions of Ch. partelhis and Co. flavipes were affected by rainfall and temperature. The predicted distributions of Ch. partellus and Co. flavipes were similar. Validation of predicted values is discussed.

Résumé

Le récent développement du système d'information géographique (GIS) ouvre de nouvelles perspectives pour l'analyse de la distribution spatiale des populations d'insectes. Les données obtenues lors d'enquêtes de terrain, combinées à des modèles GIS et statistiques on été utilisées pour prédire la distribution de Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) et de Cotesia flavipes Cameron (Hymenoptera: Braconidae) en Ethiopie. Les résultats obtenus suggèrent que la distribution de Ch. partellus et de Co. flavipes est influencée par la pluviométrie et la température. Les distributions prédites de Ch. partellus et de Co. flavipes sont similaires. La validation des valeurs prédites est discutée.

Keywords

Chilo partellusCotesia flavipesdistributiongeographic information systemsEthiopiaChilo partellusCotesia flavipesdistributionEthiopiesystème d'information géographique
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 22 , Issue 2 , June 2002 , pp. 123 - 129
Copyright
Copyright © ICIPE 2002

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