The Biology and Ecology of Granary Mites of the Pacific Northwest. III. Life History and Development of Leiodinychus krameri (Acarina: Uropodidae)1

Author： RADINOVSKY S.

Publisher： Entomological Society of America

ISSN： 1938-2901

Source： Annals of the Entomological Society of America, Vol.58, Iss.3, 1965-05, pp. : 259-267

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Abstract

Leiodinychus krameri (G. and R. Canestrini) was reared in the laboratory under various conditions of temperature and relative humidity, on what appeared to be an excellent diet. Survival and developmental rates under these conditions are evaluated. Rearing to the adult stage was achieved only at a temperature range from 20° to 30°C, and humidities of 80% or 95%; no eggs hatched in 50% RH. Comparison of adult sizes of mites reared at 30° and 95% with those reared at 20° and 95% shows that the increased rate of development at the higher temperature was accompanied by a smaller body size. Physiological explanations are offered, and optimum temperature is discussed. L. krameri was found to have a wide range of adaptability and a correspondingly high survival potential.