中国农业科学Issue(1)：61-68,8.DOI:10.3864/j.issn.0578-1752.2014.01.007
恒温和波动温度下西花蓟马的实验种群生命表
Life Tables for Experimental Populations of Frankliniella occidentalis (Thysanoptera:Thripidae) Under Constant and Fluctuating Temperature
摘要
Abstract
[Objective]The effects of constant temperatures on the life table parameters of western flower thrips (Frankliniella occidentalis) were well established, and the results were used as a means of projecting the growth of populations under natural condition. F. occidentalis in the wild, however, are not exposed to constant temperatures as they are faced with temperature variation on a daily basis. In this study, life tables of F. occidentalis under constant temperature (CT) and daily fluctuating temperatures (DFT) were compared, and the accuracy of population occurrence dynamics in natural condition based on data from CT were explored.[Method]Developmental, survival, and fecundity rate data were analyzed using the age-stage, two-sex life table of F. occidentalis reared on bean pod were constructed under constant temperature (CT, 26℃) or daily fluctuating temperatures with same mean (DFT, 20-32℃). As the hatch rate of eggs varies with maternal age, the age-specific fecundity was calculated based on the numbers of hatched eggs to reveal the biological characteristics of F. occidentalis accurately. Means and standard errors of population growth parameters were calculated using the bootstrap method. The Mann-Whitney test (U test) was used to evaluate the differences in the population parameters, development times, and fecundities of F. occidentalis reared under CT and DFT.[Result]There were significant differences in pre-adult developmental time, total preoviposition period, pre-adult survival and life table parameters between F. occidentalis reared under CT and DFT (P<0.05). However, no significant difference was found in adult longevity and fecundity between F. occidentalis reared under CT and DFT. The pre-adult developmental duration of F. occidentalis reared under CT (11.86 d) was significantly longer than those under DFT (11.36 d). The total preoviposition period of F. occidentalis reared under CT (12.50 d) was significantly longer than those under DFT (11.37 d). The pre-adult survival of F. occidentalis reared under CT (0.48) was significantly higher than those under DFT (0.44). The numbers of eggs laid per female were 35.38 and 34.74 for F. occidentalis reared under CT and DFT, respectively. The intrinsic rate of increase (r), finite rate (λ) and net reproductive rate (R0) of F. occidentalis reared under CT were 0.121 d-1, 1.129 d-1 and 7.538, respectively, while those reared under DFT were 0.127 d-1, 1.135 d-1 and 8.831, respectively. The population growth of F. occidentalis reared under DFT was quicker than those reared under CT.[Conclusion]The results indicated that by using CT, one could under-or over-estimate the values of numerous life-history traits compared to more natural DFT conditions. This inaccuracy may in turn reduce the accuracy of population surveillance and downstream applications for the timing of integrated pest management.关键词
西花蓟马/实验种群/生命表/波动温度Key words
Frankliniella occidentalis/experimental population/life table/fluctuating temperature引用本文复制引用
王海鸿,薛瑶,雷仲仁..恒温和波动温度下西花蓟马的实验种群生命表[J].中国农业科学,2014,(1):61-68,8.基金项目
国家自然科学基金项目（31201526）、现代农业产业技术体系专项资金 （）
