Vol. 13 No. 3
Studies on the distribution and role of phytoseiid predatory mites associated with rice ecosystem in West Bengal
Author(s): A. Mishra, K. Karmakar, K. Das, S. Priyadarshini and L. Dash
Abstract: To explore the diversity of predatory mite fauna on rice plants an investigation was carried out in the District Seed Farm, BCKV, West Bengal. The predatory mite population associated with rice ecosystem was recorded in 15 varieties from basal and apical canopies on 3rd November, 2015. The predatory mite species Neoseiulus, Lasioseius and Amblyseius belonging to Phytoseiidae family were found. The genus Neoseiulus include occurrence of 2 predominant species namely N. imbricatus (Corpuz-Raros and Rimando) and N. pranadae Karmakar and Gupta while Lasioseius Parberlesei Bhattacharyya belonging to the family Asciidae was also observed. Some other predatory mites belonging to families Bdellidae, Asciidae, Tydidae were also recorded. The predatory mite most abundantly found in almost all the varieties was N. imbricatus. Among the four phytoseiid species documented on different rice plant canopies at various positions had different male to female ratio. The females of all the four different mites of phytoseiid group were found more abundant over the males.
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