Orientador(es)
Resumo(s)
To obtain data on the main species of phytoseiid mites occurring at Região Demarcada do Douro (R.D.D.), a survey was carried out by the end of July-beginning of August, 1997, in 61 vineyards, from which 41 unsprayed and 20 sprayed according to the usual practices in the region. From the unsprayed vineyards, 18 were situated in the north region of the Douro river and 23 belonged to the south region of this river. The sprayed vineyards were all situated in the north region of the Douro. Sampling was done on 20 random selected leaves from five plants in each vineyard, and phytoseids extracted and identified. Seven species were found: Euseius finlandicus (Oudemans), E. stipulatus (Athias-Henriot), Kampimodromus aberrans (Oudemans), Neoseiulus californicus (McGregor), Typhlodromus athenas Swirski & Ragusa, T. phialatus Athias-Henriot and T. pyri Scheuten. The dominant species were T. pyri and K. aberrans. T. pyri which represented 47.2% of total the individuals found mostly in the South region of Douro, in cooler sites. K. aberrans, 46.7% of the total individuals, dominated in the North region of Douro, in warmer and dryer places. T. phialatus and T. athenas were common in the sprayed vineyards. The dominant species of phytoseiids found in the R.D.D., T. pyri and K. aberrans, are known as the most efficient agents against spider mites in many vine growing areas of Europe.
Descrição
Palavras-chave
Phytoseiid mites Grapevine Portugal Typhlodromus pyri Kampimodromus aberrans Typhlodromus phialatus
Contexto Educativo
Citação
Pereira, J.A.; Torres, L.; Espiñha, Isabel; Ferragut, F. (2003). Contribution to the knowledge of phytoseiid mites associated with vineyards in the "Região Demarcada do Douro" (Porto Wine Region). Acarologia. ISSN 0044-586X. 43:1, p. 7-13