Abstract
Abstract The effect of temperature on the development of immature stages of the predator Iphiseius degenerans (Berlese) was studied at 15, 20, 25, 27.5, 30, and 32.5°C with 60% RH and photoperiod of 16:8 (L:D) h when feeding on Tetranychus urticae. The data obtained were used for the estimation of the thermal requirements of this predator by a linear and nonlinear model (Lactin 2-model). Developmental thresholds that were estimated by the linear model for immature stages of egg, protonymph, and deutonymph were approximately the same and found to be 11.71, 10.11, and 11.28°C, respectively, whereas that of the larval stage was found to be lower (7°C). The Lactin-2 model was also applied, and lower values were estimated for all immature stages than those by the linear model. Biological characteristics and life table parameters of the predator were also studied at 15, 20, 25, 30, and 32.5°C. Preoviposition period was shortest at high temperatures of 30 and 32.5°C (1.18 and 1.08 d, respectively), whereas fecun...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
