Abondance des mouches des fruits dans les zones de production fruitières de Côte d’Ivoire : dynamique des populations de Bactrocera invadens (Diptera : Tephritidae) uri icon

abstract

  • Introduction. The objective of our study was to count various species of Tephritidae present on fruit trees in three different climatic areas of Cote d'Ivoire and to identify some host plants with which they are associated. Materials and methods. A set of different traps using pheromones was set up in the agro-ecological areas of the south (Azaguie, Abidjan) and center (Yamoussoukro) of Cote d'Ivoire from June 2005 to September 2006. In addition, a fruit collection was carried out in these same areas and in the north of the country (Korhogo). Fluctuation of Bactrocera invadens populations was followed from weekly observation of traps. The emerged fruit flies of the collected fruits were identified and counted. Results and discussion. In all, 23 species of fruit flies were identified including eight species particular to Azaguie, one species to Abidjan and one species to Yamoussoukro. The B. invadens and D. mediovittatus species were identified for the first time in Cote d'Ivoire. The B. invadens species appeared as the majority in the sites of the south and center of Cote d'Ivoire. It is represented with 85% in Azaguie, 99.90% in Abidjan and 95.40% in Yamoussoukro. Methyl eugenol and dorsalure were most effective in capturing a great number of individuals. The species Ceratitis and Dacus, although having a specific diversity, are slightly represented in the studied experimental sites. According to the agro-ecological zones and the fruiting period of the mango trees in Cote d'Ivoire, the B. invadens populations present various peaks of growth. Conclusion. Complementary studies regarding the biology and the behavior of this pest will prove to be necessary for the application of optimal control methods in orchards in West Africa and, more particularly, in Cote d'Ivoire.

publication date

  • 2009
  • 2009