Life history of immature Angoumois grain moths, Sitotroga cerealella (Olivier), was studied on dent corn (Pioneer 3320) at 10, 15, 20, 25, 30, 35, and 40°C and at 43, 53–61, 75–76, and 82–87% RH under laboratory conditions. At 10 and 40°C, none of the stages survived at any relative humidity. Temperature was the main factor affecting egg incubation period, larval-pupal development time, and egg and larval-pupal survivorship. The shortest egg development times occurred at temperatures of 30°C and higher, but they increased sharply as temperature decreased. Larval-pupal development time was shortest at 30°C. Survivorship was optimal at 20–30°C for eggs and larvae-pupae, but larval-pupal survivorship decreased sharply at 15 and 35°C. Duration of larval-pupal development did not vary with sex. Newly emerged females were twofold heavier than males, and temperature and relative humidity did not affect weight. Sex ratio of emerging adults did not differ from 1:1 at any temperature or relative humidity. The optimum conditions for development of Angoumois grain moth on corn were 30°C and 75% RH. The data will be useful for determining safe storage conditions for corn and for developing a computer model for simulating population dynamics of immature S. cerealella.
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.