Population dynamics of Cacopsylla sp. (Hemiptera: Psylloidea: Psyllidae), pest insect of Prunus africana (Rosaceae), medicinal plant species in Cameroon-Reference-Cited by-同舟云学术

Population dynamics of Cacopsylla sp. (Hemiptera: Psylloidea: Psyllidae), pest insect of Prunus africana (Rosaceae), medicinal plant species in Cameroon

Published:2020-06-09 Issue:2 Volume:12 Page:221-228
ISSN:2231-5209
Container-title:Journal of Applied and Natural Science
language:
Short-container-title:JANS

Author:

Victor Joly Dzokou,Wenceslas Yana,Laurentine Soufo,Joseph Lebel Tamesse

Abstract

Prunus africana is threatened in Cameroon by xylophagous and sap-sucking pest as Cacopsylla sp. This last causes deformations of the young leaves and buds and the plant end up losing all its leaves. Effective control of phytophagous pests requires a thorough understanding of their seasonal population dynamics. The objective of this work carried out on 150 young plants of P. africana in the nursery in Dschang, was to study the population dynamics of Cacopsylla sp. and the impact of climatic factors on the population. From January 2006 to December 2007, monthly collections of larvae, males and females of Cacopsylla sp. were carried out. The results showed, in 2006, three peaks (March, August and December) and two peaks in 2007 (March and August) with larvae. The fluctuation of males' population showed five peaks with two peaks in 2006 (March and December) and three peaks in 2007 (March, June and December) while in females' population, four peaks with two peaks in 2006 (March and December) and two peaks in 2007 (March and November). The annual numerical variation of Cacopsylla sp. individual is statistically correlated with variation of precipitations and the insolation. The precipitations have a negative effect on the numerical variation of males (r=-0.430, p<0.0360) and females (r=-0,434, p<0.0336) of Cacopsylla sp. The insolation has a positive effect on the numerical variation of males (r=0.732, p<0.0000002), females (r=0.653, p<0.000523) and the total individuals (r=0.601, p<0.00197) of Cacopsylla sp. With the larvae, the correlation was negative and non-significant. This work showed that March and December were better indicated to engage the fight against Cacopsylla sp. in Dschang.

Publisher

ANSF Publications

Subject

General Agricultural and Biological Sciences,General Environmental Science,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology

Reference30 articles.

1. Arora, P.K., Thind, S. K., Kaur N. and GrewalI. S. (1997). Population dynamics of citrus psylla, Diaphorina citri Kuwayama on kinnow mandarin in relation to temperature and relative humidity. Indian J. Ecol. 24: 179-183.

2. Aubert, B. (1988). Towards an integrated management of citrus greening disease. Proceedings of 10th Conference International Organization of Citrus Virologists, (IOCV' 88), pp: 226-230.

3. Aubert, B. (1987). Trioza erytheae del Guercio and Diaphorina citri Kuwayama (Homoptera:Psylloi dea), the two vectors of citrus greening disease: Biological aspects and possible control strategies. Fruits, 42 : 149-162.

4. Aubert, B., Garnier, M., Cassin, J.C. and Bertin, Y. (1988). Citrus greening disease survey in East and West African countries south of Sahara, pp. 231–237. In Proceedings of the Tenth Conference of the International Organisation of Citrus Virologists, 1988, Spain (Edited by L.W. Timmer, S.M. Garnsey and S.L. Navarro). University of California Press, CA, USA.

5. Awono, A., Tchindjang, M., Levang, P. (2015). Inventory of fixtures of the barks of Prunus africana: case of the areas of the North-West and the South-West of Cameroon. Scientific and Technical Review Forest and Environment of the Basin of Congo, 6, 46-59. [From French translation].