Liposcelis paetus can survive and breed on milled rice, causing a small dry-weight loss to the commodity. The extent of the losses was found to be dependent upon the degree of milling and the insect population density. The rate of population increase was greater on lightly milled rice (slope = 0.042) than on well-milled rice (slope = 0.028). After 14 weeks' infestation, greater weight losses were incurred in the lightly milled than the well-milled rice (2.88 and 1.20%, respectively). A postinfection decrease in lipid and, to a lesser extent, protein content was detected in the lightly milled samples (35.88 and 3.59%, respectively).
Pike, V. Impact of milling degree on Liposcelis paetus population growth rate and assessment of milled rice weight loss due to infestation. Crop Protection (1994) 13 (6) 425-428. [DOI: 10.1016/0261-2194(94)90089-2]