Acarofauna do coqueiro (Cocos nucifera L.), dinâmica populacional do ácaro da necrose (Aceria guerreronis Keifer) no agreste de Alagoas e testes de predação

Abstract

This work aimed at surveying the fauna of both phytophagous and predators mites associated with coconut groves in Agreste region of Alagoas State, hence testing the efficiency of the most abundant predator of the Eriophyid in the coconut crop. The survey was conducted in three distinct cultures, these 12 samples were taken for 6 months. Therefore, at each assessment were collected in 10 plant a total of 40 fruits and 40 leaves per coconut. The fruits were collected from the bunches of leaves 9:10, since the leaflets were removed two basal band, one of the median strip , and a range of apical leaves. The predators were bred and multiplied in ring, following methodology adapted for this kind of creation. Fruit were found in a total of 116,983 coconut mites, these being in six different families, genera 6 as follows: Eriophyidae (1) Bdellidae (1) , Cheyletidae (1) Ascidae (1) , Tarsonemidae (1) and Acaroidae (1). Already on the leaflets nine (9) families containing them, (11) genera: Eriophyidae (2) Tetranychidae (1) Tenuipalpidae (1) Tideidae (1) Bdellidae (1) Iolinidae (1) Rhodacaridae (1), and Tarsonemidae Phytoseiidae (5). The species found and identified belong to the genera: Aceria (1), Tetranychus (1) , Brevipalpus (1) , Neoseiulus (1) Phytoseius (1) , Phytoseiulus (1) , Typhlodromus (1) Amblyseius (3) , Tyrophagus (1) and also the suborder Oribatid (1). Were predated a total of 25,442 mites A. guerreronis. Abundance of coconut trees A.guerreronis in Alagoas, the predatory mite Proctolaelaps bickleyi presents efficient in controlling mite necrosis.