Evolutionary genetics of Drosophila ananassae III. Effect of temperature on certain fitness traits in two natural populations

Ten isofemale lines of two natural populations of Drosophila ananassae were compared at four different temperatures for body size, W/T ratio, ovariole number and different life history traits. Three-factor nested ANOVA for thorax length and W/T ratio shows significant differences for temperature and sex, while for wing length it shows significant sex difference only. Two-factor nested ANOVA for ovariole number shows a significant difference between populations only, and not for different temperatures. Tests of correlations among different life history traits show novel trade-offs between LDT and pupal period and between pupal period and egg-pupa DT at different temperatures.