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Factors affecting the distribution and abundance of Phytolyma lata (Homoptera: Psyllidae)

Published online by Cambridge University Press:  19 September 2011

J. R. Cobbinah
J. R. Cobbinah
Affiliation:
Forest Products Research Institute, P.O. Box 63, University of Science and Technology, Kumasi, Ghana
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Abstract

The spatial distribution and abundance of galls of Phytolyma lata were investigated. There was significant correlation between gall counts and the proportion of young leaves. It is suggested that the preference for young leaves not only ensures that good quality food is available but also that the insect is able to complete development before leaf fall. The distribution was also found to be influenced by the surface of leaf, region of leaf and size of veins.

Résumé

L'abondance et la distribution spatiale de la galle du Phytolyma lata ont été étudié. Entre les dénombrements de la galle et al proportion des jeunes feuilles était une correlation étroite. La préférence pour les jeunes feuilles assure non seulement que les aliments de bonne qualité est disponible mais aussi l'insecte peut terminer le development avant la chute de la feuille. On a constaté aussi que la surface de la feuille, la partie de la feuille et la taille de la nervure ont influé sur la distribution.

Keywords

Phylolyma lata (Walk)Chlorophora regia A. Chev.preference ratingsphenological studiesregenerative phasebackward multiple regression procedurephenological cycleabsolute shortagerelative shortagePhytolyma lata (Walk)Chlorophora regia A. Chev.le classment de préférenceles études de phenologiela phase régénératricela procédure du multiple de regression en arriérele cycle de la phenologiele penurie absoluela pénurie relative
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 1 , February 1986 , pp. 111 - 115
Copyright
Copyright © ICIPE 1986

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References

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