Developmental durations, threshold temperatures and effective accumulative temperatures of Bactrocera correcta under natural conditions
The durations of the egg, larval, pupal, and pre-oviposition stages of Bactrocera correcta( Bezzi) were recorded under natural conditions, and developmental threshold temperatures and effective cumulative temperatures determined. Except for pre-oviposition which had the shortest duration at 261 , the durations of the egg, larval and pupal stages all decreased with increasing temperature. Developmental threshold temperatures for eggs, larvae, pupae, and pre-oviposition were 15.25, 9.24, 10.35 and 20.14°C, and effective accumulative temperatures were 21.24, 91.06, 180.85 and 135. 66 degrees-days, respectively. A model of the relationship between temperature and developmental rates for these four life-history stages was developed.
Bactrocera correctanatural conditionsdurationdevelopmental threshold temperatureeffective accumulated temperature