Ocorrência e flutuação populacional de espécies de moscas-das-frutas e parasitóides com ênfase para o gênero Anastrepha (Diptera: Tephritidae) na Amazonia Brasileira.

Abstract

The knowledge about fruit flies population dynamic in a certain region is an important factor for the more accurate way of dealing with this group of insects considered the most dangerous to the world fruticulture. Occurrence and distribution of Anastrepha spp. and its parasitoids, population fluctuation, infestation levels and faunistic analysis were studied in amazon region during the period from May 1996 to December 1998. For occurrence and distribution study of Anastrepha spp. and its parasitoids there were performed collects in four States from North Region of Brazil: Amapá, Amazonas, Rondônia and Roraima. For faunistic analysis were performed in six counties of Amazonas state: Iranduba, Manacapurú, Careiro, Presidente Figueiredo, Rio Preto da Eva and Itacoatiara. There were identified 27 species of Anastrepha of which 9 are new records and 6 parasitoid species of which one is a' new record for amazon region. The study about population fluctuation revealed that host availability is one of the factors that contributes for fruit flies presence. Further studies will be necessary to understand the population dynamic of the fruit flies and their relationship with the host fruit at different eco regions of the brazilian Amazonia.