Two chironomid species, Glyptotendipes paripes and Chironomus crassicaudatus , were reared in the laboratory under a range of constant temperatures: 12.5 °C to 32.5 °C (2.5 °C interval) for 60 days. Development time for G. paripes was shortest at 32.5 °C (35 days), gradually decreasing with increasing temperature. The shortest development time for C. crassicaudatus was 27.5 °C, with the development time increasing above or below this optimum temperature. Male of each species developed earlier than the female, but the time difference was statistically not significant. The degree days (DD) and development zero estimates were 716 DD and 8.9 °C (G. paripes ) and 1312 DD and 8.6 °C (C. crassicaudatus ).
Species 1: Diptera Chironomidae Glyptotendipes paripes
Species 2: Diptera Chironomidae Chironomus crassicaudatus
Keywords: degree-days, development
The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA