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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

  • G. Emana
  • W. A. OverholtEmail author
  • E. Kairu
  • L. MacOpiyo
  • G. Zhou
Research Article

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. partellus 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.

Key Words

Chilo partellus Cotesia flavipes distribution geographic information systems Ethiopia 

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.

Mots Clés

Chilo partellus Cotesia flavipes distribution Ethiopie système d’information géographique 

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Copyright information

© ICIPE 2002

Authors and Affiliations

  • G. Emana
    • 1
  • W. A. Overholt
    • 1
    Email author
  • E. Kairu
    • 2
  • L. MacOpiyo
    • 1
  • G. Zhou
    • 1
  1. 1.International Centre of Insect Physiology and Ecology (ICIPE)NairobiKenya
  2. 2.Kenyatta UniversityNairobiKenya

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