The development, survival, and reproduction of Liposcelis paeta Pearman (Psocoptera: Liposcelididae), an important insect pest of stored products, were evaluated at nine constant temperatures (20–40°C). Few insects could complete the development or reproduce at 20 or 40°C. Between 22.5 and 37.5°C, the developmental period from egg to adult varied from 45.4 d at 22.5°C to 11.5 d at 37.5°C. The lower temperature developmental thresholds were estimated at 18.1–21.9°C, and the upper temperature thresholds were 40.4–42.0°C. The percentage of survival from egg to adult was 52.79% at 32.5°C and 18.79% at 22.5°C. After emergence, the adult had a short preoviposition period that ranged from 6.3 d at 22.5°C to 0.8 d at 37.5°C. L. paeta produced the most eggs at 27.5°C and the fewest at 37.5°C. The population reared at 32.5°C had the highest intrinsic rate of increase compared with the other temperatures. Based on our data, the optimal range of temperature for L. paeta population growth was 30–35°C. These data give us better understanding of L. paeta population dynamics, and they can be used to develop effective management strategies for this psocid.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.