Change of life-history traits in the four melanic morphs ofBactrocera dorsalis
The preimaginal stages obtained from the four melanic morphs of B. dorsalis adults had significant different pupation times (ANOVA: F3, 116 =164.3, P<0.0001 ), emergence time (ANOVA: F3, 116 =118.7, P<0.0001 ), larval weight (ANOVA: F3, 116 =13.97,P<0.0001 ) and pupal weight (ANOVA: F3, 116 =19.45, P<0.0001 ). Larvae from morph 4 adults which has less melanin (pale) took a long time to reach the pupal stage as compared to those from the other morphs (Fig. 2A). Nonetheless, adults from this morph emerged faster from the pupae followed by adults from morph 1 (Fig. 2B). Larvae from morph 3 and 4 weighed less in comparison to those from morph 1 and 2 (Fig. 2 C). However, only pupae from morph 3 had a reduced weight; while pupae from morph 4 had the same weight as those from morph 1 and 2 (Fig. 2 D).