Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/106797
Title: Effects of carbon dioxide on the mortality of Liposcelis bostrychophila Bad. and Liposcelis entomophila (End.) (Psocoptera: Liposcelididae)
Authors: Leong, E.C.W.
Ho, S.H. 
Keywords: carbon dioxide
Liposcelis
mortality
Issue Date: Jul-1995
Citation: Leong, E.C.W.,Ho, S.H. (1995-07). Effects of carbon dioxide on the mortality of Liposcelis bostrychophila Bad. and Liposcelis entomophila (End.) (Psocoptera: Liposcelididae). Journal of Stored Products Research 31 (3) : 185-190. ScholarBank@NUS Repository.
Abstract: The reduction in adult emergence of Liposcelis entomophila eggs treated with CO2 was observed to be a direct consequence of egg mortality. Adult emergence was inversely related to the CO2 concentration to which the eggs were exposed. The response of liposcelid eggs to hypercarbia (30-95% CO2) did not differ from the simple Ct relationship, Ct = k. Eggs of Liposcelis bostrychophila were noted to be > 2 times more tolerant to CO2 treatment than those of L. entomophila. Based on LT50 and LT95 values for 1-to 3-wk-old females exposed to 45 and 60% CO2, L. bostrychophila was the more tolerant species. Increasing the CO2 concentration from 45 to 60% did not reduce the LT95 in either species. At a fixed exposure period of 4 h, no corresponding increase in mortality was observed in either species for CO2 concentrations > 45%. Similar responses were observed in L. bostrychophila for 3 and 5 h exposures to various CO2 concentrations. The use of CO2-enriched atmospheres in the control of L. bostrychophila and L. entomophila is also discussed. © 1995.
Source Title: Journal of Stored Products Research
URI: http://scholarbank.nus.edu.sg/handle/10635/106797
ISSN: 0022474X
Appears in Collections:Staff Publications

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