The Rate of Preimaginal Development of the Blowfly, Calliphora vicina R.-D. (Diptera, Calliphoridae) under Field and Laboratory Conditions

摘要

Open field experiments with the blowfly, Calliphora vicina originating from the environs of St. Petersburg showed that the correlation between the rate of its preimaginal development under the natural conditions and the mean daily temperature could bevery closely approximated by linear regression. The sum of effective temperatures required for development from the egg to the puparium constituted ca 140 degree-days and from the egg to the adult, ca 320 degree-days with the lower thresholds of 5.8 and4.8°C, respectively. The minimum duration of development (6-8 days from the egg to the puparium and 16-20 days from the egg to the adult) was recorded during the period of the highest mean temperatures (22-23°C) from July 8 to August 15 of 2010 and 2011. The rate of development under natural thermorhythms was not significantly different from that under the laboratory conditions at constant temperatures from 12 to 23°C.