We investigated the effects often constant temperatures (20.0, 22.5, 25.0, 27.5, 30.0, 32.5, 35.0, 37.5, 39.0, and 41.0°C) on the development, survival, and reproduction of the psocid Liposcelis yunnaniensis Li & Li (Psocoptera: Liposcelididae). At 39.0 and 41.0°C, none of individuals could develop successfully or reproduce. From 20 to 37.5°C, the development period from egg to adult ranged from 64.3 d at 20°C to 16.1 d at 35°C. The lower developmental threshold for egg, nymph, and combined immature stages were estimated at 15.08, 15.13, and 14.77°C, respectively. After emergence the females went through a preoviposition period that ranged from 18.5 d at 22.5°C to 3.11 d at 35°C, whereas it was 16.3 d at 20°C. Liposcelis yunnaniensis produced most eggs at 35°C and the fewest at 22.5°C. The population reared at 35°C had the highest intrinsic rate of increase, shorter mean generation time, and shortest population doubling time compared with other temperatures. According to Weibull frequency distribution, L. yunnaniensis reared at all the temperatures had type III survivorship curves (c < 1.0). Based on life-table parameter estimations, we suggest that optimum range of temperatures for this species is from 25 to 37.5°C. These data give us useful information on population biology of L. yunnaniensis and can be used to better manage this species.
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.
Vol. 104 • No. 4