Fertility life table parameters for Aphis gossypii Glover were studied on cucumber, pumpkin and squash under laboratory conditions of 25±1?C, 75±5 RH, and 16:8(L:D) . Standard error of population growth parameters was calculated by using the Jackknife method. Net reproductive rates (R0) on cucumber, pumpkin and squash were computed 76.789±7.806, 32.704±6.402 and 43.995±4.041, respectively. According to the Birch method of intrinsic rate of increase(rm) calculation, rm estimates were 0.492±0.01 on squash, 0.472±0.013 on cucumber and 0.393±0.019 on pumpkin. Based on Wyatt and White method, rm values on aforementioned plants were calculated as 0.512±0.014, 0.464±0.027 and 0.371±0.032, respectively that are similar to the results in the Birch method. Doubling time(DT) was the lowest on squash(1.409±0.03) and the highest on pumpkin(1.758±0.085).
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