Laboratory estimation of degree-day developmental requirements of Glyptotendipes paripes (Diptera: Chironomidae)

Eggs from field-collected Glyptotendipes paripes Edwards were hatched and the immature life stages individually reared under 11 constant temperatures between 10.0 and 35.0degreesC (2.5degreesC increments) in the laboratory. No egg hatch was observed at 10.0degreesC for up to 30 d. At 35.0degreesC, egg batch was normal but the larvae did not survive to second instar. The developmental zero growth was estimated at 9.0degreesC. Degree-day requirement for G. paripes development from egg to adult was estimated at 717 DD above 9.0degreesC. No significant difference between development time of males and females was noted and the sex ratio was near 1:1.