Effects of temperature on development and ovipistion of Amblyseius eharai, were examined at 11 constant temperatures (18.0, 20.1, 21.6, 24.0, 24.1, 27.4, 28.6, 30.2, 32.0, 33.2 and 35.9 °C), and six constant temperatures (18.0, 21.6, 24.1, 27.4, 30.2 and 33.2 °C) by using Tetranychus urticae as prey. Developmental rates were fitted with a nonlinear Briere 1 model, which estimated optimal temperatures for the development as 30.6 °C for total immature stage. In a linear model, the lower thresholds and thermal requirements (DD) were 13.2 °C (71.94 DD) for total immature stage. Fecundity was well described with the Extreme value function, which indicated optimal temperatures for the oviposition as 24.3 °C. Overall, findings herein provide comprehensive data and explanations on the temperature-dependent development and oviposition of A. eharai, and prove the probability of A. eharai as a good biological agent for T. urticae in early or late crop seasons, and/or at low temperature cultivation farm lands.

• Young-gyun Park(Entomology Program, Department of Agricultural Biotechnology, Seoul National University)
• Sunghoon Baek(Entomology Program, Department of Agricultural Biotechnology, Seoul National University)
• Joon-Ho Lee(Entomology Program, Department of Agricultural Biotechnology, Seoul National University Research Institute of Agriculture and Life Sciences, Seoul National University)