Life table parameters of Thrips tabaci on lentil and chickpea at laboratory conditions

Onion thrips, Thrips tabaci is the most well-known and most common polyphagous thrips worldwide and is one of the major pests of legume fields, causing significant damage to various crops each year. In this study the life table parameters of onion thrips was studied on lentil and chickpea plants at laboratory conditions (25 ± 1°C, 70 ± 5% RH and 16: 8 h L: D). The total life cycle fromegg to adult and the mean adult longevity on lentil and chickpea plants were calculated as 13.81 and 15.81 days, and 13.44 and 13.91 days respectively. The females laid 43.90 and 24.84 eggs on average. The immature mortality was 10.37 and 19.78 on lentil and chickpea, respectively. The net reproductive rate (R0) was 39.51 and 20.22, and the intrinsic rate of increase (rm) was 0.185 and 0.133 respectively. The finite rate of increase (λ) was 1.20 and 1.14. However, mean generation time (T) and doubling time (DT) on two host plants was calculated as 19.81, 22.47 and 3.73, 5.18 day. The results showed that all of the life table parameters of T. tabaci on lentil plant were statistically significantly different from chickpea plant. According to these results, it seems that lentil is a more suitable host plant for onion thrips.