Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-26T14:07:43.967Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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

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

Anonymous, T. (1973) The analysis of agricultural materials; section 1. Feeding stuffs and plant materials. Ministry of Agriculture, Fish and Food Technical Bulletin 27.Google Scholar
Association of Official Agricultural Chemists (AOAC) (1955) Official methods of analysis. AOAC, Washington, D.C.Google Scholar
Bradstreet, R. B. (1965) The Kjeldahl Method for Organic Nitrogen Analysis. Academic Press, New York.Google Scholar
Cobbinah, J. R. (1978) The biology and food preferences of the gum leaf skeletonizer, Uraga lugens (Walk). Ph.D. thesis, University of Adelaide, Australia.Google Scholar
Dixon, F. A. G. (1969) Quality and availability of food of a sycamore aphid population. In Animal Population in Relation to Their Food Resources (Edited by Watson, A.), pp. 271–287. Blackwell, Oxford.Google Scholar
Draper, N. R. and Smith, H. (1966) Applied Regression Analysis. Wiley, New York.Google Scholar
Kennedy, J. S., Ibbotson, A. and Booth, C. O. (1950) The distribution of aphid infestation in relation to leaf age 1. Myzus persicae (sulz) and Aphis fabae (Scop), on spindle trees and sugarbeet plants. Ann. appl. Biol. 37, 651–679.CrossRefGoogle Scholar
Mathews, E. G. (1976) Insect Ecology. University of Queensland Press, Australia.Google Scholar
Orr, J. R. and Osei-Nkrumah, A. (1979) Final report on the study of Phytolyma lala at Mesewam nursery near Kumasi, Ghana. Ranjhan S. K. and Krishna C. (1980) Laboratory Manual for Nutrition Research. Vikas Publishing House, New Delhi.Google Scholar
Van Emdem, H. F., Eastop, V. F., Hughes, R. D. and Way, N. J. (1969) The ecology of Myzus persicae. A. Rev. Ent. 14, 197–270.CrossRefGoogle Scholar
Warren, J. W. and Moran, V. C. (1978) The influence of the hostplant on the population dynamics of Acissa russellae (Homoptera: Psyllidae). Ecol. Ent. 3, 313–321.Google Scholar
White, M. G. (1967) Research in Nigeria on the Iroko gall bug (Phytolyma sp). Niger. For. Inform. Bull. 18, 72.Google Scholar
White, T. C. R. (1966) Food and outbreaks of phytophageous insects. Ph.D thesis, Adelaide University, Australia.Google Scholar