We wanted to evaluate if the body weight of wild adult Queensland fruit fly Bactrocera tryoni changed in response to season or months to confirm results reported in the mass rearing facility. Also, this will provide insights into survival mechanisms in wild flies. We analysed 34,924 flies from the Sydney surveillance array and measured dry and fresh weight across time (months and seasons). We used results from sterile fly production to extrapolate survival traits based on adult fly weights. We found the heaviest flies were collected in late winter (August) and early spring (September and October) and heavier weights are indicative of higher eclosion and flight ability. On the other hand, lighter flies were collected in May, June and July, followed by the other autumn months. We suspect this is associated with longevity and winter survival. We conclude that fly weights vary according to months and seasons and these variations may confer different survival traits for each season.

我们想评估野生昆士兰成年果蝇Bactrocera tryoni的体重根据季节或月份进行了更改，以确认在大规模饲养设施中报告的结果。同样，这将提供对野蝇生存机制的见解。我们分析了悉尼监视阵列中的34,924只果蝇，并测量了不同时间（月份和季节）的干重和鲜重。我们使用不育蝇生产的结果来推断成年蝇重量的生存特征。我们发现最重的苍蝇是在冬末（八月）和早春（九月和十月）收集的，而较重的重量则指示较高的隐性和飞行能力。另一方面，在5月，6月和7月收集了较轻的果蝇，随后是其他秋天的几个月。我们怀疑这与寿命和冬季生存有关。