Morsello Shannon C, Groves Russell L, Nault Brian A, Kennedy George G
Department of Entomology, North Carolina State University, Raleigh, NC 27695, USA.
Environ Entomol. 2008 Feb;37(1):79-86. doi: 10.1603/0046-225x(2008)37[79:tapasp]2.0.co;2.
Effects of temperature and precipitation on the temporal patterns of dispersing tobacco thrips, Frankliniella fusca, and onion thrips, Thrips tabaci, caught on yellow sticky traps were estimated in central and eastern North Carolina and eastern Virginia from 1997 through 2001. The impact that these environmental factors had on numbers of F. fusca and T. tabaci caught on sticky traps during April and May was determined using stepwise regression analysis of 43 and 38 site-years of aerial trapping data from 21 and 18 different field locations, respectively. The independent variables used in the regression models included degree-days, total precipitation, and the number of days in which precipitation occurred during January through May. Each variable was significant in explaining variation for both thrips species and, in all models, degree-days was the single best explanatory variable. Precipitation had a comparatively greater effect on T. tabaci than F. fusca. The numbers of F. fusca and T. tabaci captured in flight were positively related to degree-days and the number of days with precipitation but negatively related to total precipitation. Combined in a single model, degree-days, total precipitation, and the number of days with precipitation explained 70 and 55% of the total variation in the number of F. fusca captured from 1 April through 10 May and from 1 April through 31 May, respectively. Regarding T. tabaci flights, degree-days, total precipitation, and the number of days with precipitation collectively explained 57 and 63% of the total variation in the number captured from 1 April through 10 May and from 1 April through 31 May, respectively.
1997年至2001年期间，在北卡罗来纳州中部和东部以及弗吉尼亚州东部，评估了温度和降水对粘在黄色粘虫板上的分散型烟草蓟马（Frankliniella fusca）和葱蓟马（Thrips tabaci）时间模式的影响。利用分别来自21个和18个不同田间地点的43个和38个站点年的空中诱捕数据，通过逐步回归分析，确定了这些环境因素对4月和5月粘虫板上捕获的烟草蓟马和葱蓟马数量的影响。回归模型中使用的自变量包括度日数、总降水量以及1月至5月期间有降水的天数。每个变量在解释两种蓟马物种的变化方面都具有显著性，并且在所有模型中，度日数是唯一最好的解释变量。降水对葱蓟马的影响比对烟草蓟马的影响相对更大。飞行中捕获的烟草蓟马和葱蓟马数量与度日数和有降水的天数呈正相关，但与总降水量呈负相关。在一个单一模型中，度日数、总降水量和有降水的天数分别解释了4月1日至5月10日和4月1日至5月31日捕获的烟草蓟马数量总变化的70%和55%。对于葱蓟马的飞行，度日数、总降水量和有降水的天数分别共同解释了4月1日至5月10日和4月1日至5月31日捕获数量总变化的57%和63%。
