Functional response of three predatory phytoseiid mites (Phytoseiidae acari) to two-spotted mite, Tetranychus unticae Koch (Tetrayachidae acari)
2005
Navasero, M.M. | Corpuz-Raros, L.A., Philippines Univ. Los Banos, College, Laguna (Philippines). Crop Protection Biotechnology and Product Utilization Div.; Philippines Univ. LosBanos, College, Laguna (Philippines). Pest Biology and Biodiversity Div.
The functional responses of three species of predatory phytoseiid mites, Neoseiulus calorai (Corpuz and Rimando), Neoseiulus longispinosus (Evans) and Proprioseiopsis lenis (Corpuz-Rimando), to eggs, larvae, protonymphs, deutonymphs and adult females to Tetranychus urticae Koch, were determined. The predation tests were conducted on rose leaf discs inside Munger cells over a 24 h period at 27 plus or minus 1 deg C. Prey densities ranged from 1 to 60 per leaf disc for each prey stage. All three species were effective predators of eggs of T. urticae but N. calorai and P. lenis were effective also on larvae. Based on R2 values, both Type 1 and Type 2 curves provide good fit on the functional response data.
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