D3057: Fitness costs brought on by insecticide resistance: A meta-analysis

Fitness costs are commonly associated with insecticide resistance but there has been no quantitative review confirming this. Fitness costs can be indicated through various life-history traits including fecundity, adult male and female longevity, juvenile development time, and juvenile survival percentages. Revealing the overall effects of resistance on fitness indicators and what factors contribute to the varying degrees of these costs can improve our understanding of evolutionary costs and create opportunities for better control strategies. I reviewed the literature involving fitness costs associated with insecticide resistance and recorded data on multiple life history traits. From the recorded data, I was able to generate multiple meta-analyses’ to determine overall effects of resistance. The results revealed the following (1) resistant individuals within the order Hemiptera had significantly lower fecundity and juvenile survival percentage compared to susceptible individuals (b) resistant Dipterans had a lower fecundity, prolonged development time, and shorter male and female lifespans than susceptible Dipterans (3) and resistant insects within Lepidoptera also had significantly lower fecundity accompanied by longer larval durations and higher larval mortality than their susceptible counterparts.