Abstract: 【Aim】 In order to save time and labor in life table studies and still to maintain the accuracy of the analyses involved, we tested the effects of changing the frequency of data sampling for two strains (infected and uninfected by Cardinium) of Bemisia tabaci MED cryptic species (commonly known as biotype Q) on their population parameters. 【Methods】 Based on the raw data recorded daily, the simplified data of the sampling intervals of 2, 4 and 5 d were re-analyzed to test the significant differences between the treatments. 【Results】 No significant differences between the treatments existed in the population parameters including the intrinsic rate of increase (r), finite rate of increase (λ), net reproductive rate (R₀), mean generation time (T), preadult duration, fecundity, female longevity, male longevity, and total preoviposition period (TPOP) obtained through daily sampling and the interval-grouped data, except the adult preoviposition period (APOP) and oviposition days. 【Conclusion】 Our results demonstrated that the simplified recording method has no significant effects on the evaluation of the key population parameters and can be used in life table studies with less time and labor. In addition, the simplified recording method may decrease the interference to observed adults due to reduced daily observation. Consequently, the simplified method may be helpful to promote the application of the age-stage, two-sex life table.

Key words: Bemisia tabaci; age-stage two-sex life table, egg production, simplified recording method, population parameters