CO2 PRODUCTION BY CRYPTOLESTES FERRUGINEUS (STEPHENS) IN STORED WHEAT UNDER ADIABATIC CONDITIONS

摘要

Cumulative carbon dioxide (CO2) production from the respiration of Cryptolestes ferrugineus (Stephens) in stored wheat was measured in an adiabatic respiratory calorimeter. The effects of the following variables on CO2 production were determined: initial grain temperature (15,20,25,30 and 35 degrees C), grain moisture content (12,15 and 18% w.b.), grain mechanical condition (wheat with 0, 10 and 20% broken kernels), adult age, (1, 4 and 8 weeks old), adult population density (1250, 2500 and 5000 insects/200 g of wheat, and immatures stages (second, third and fourth instar larvae at a density of 1250 larvae/200 g of wheat).