ShuQi He, Ying Lin, Lei Qian, ZhiHua Li, Chao Xi, Lu Yang, FuRong Gui
State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, College of Plant Protection, Yunnan Agricultural University, No. 452, Fengyuan Rd., Panlong District, Kunming 650201, Yunnan Province, China (
Environ Entomol. 2017 Jun 1;46(3):722-728. doi: 10.1093/ee/nvx083.
Development and fecundity were investigated in an invasive alien thrips species, Frankliniella occidentalis (Pergande), and a related native species, Frankliniella intonsa (Trybom), under high CO2 concentration. Results show that the two thrips species reacted differently toward elevated CO2 concentration. Developmental duration decreased significantly (11.93%) in F. occidentalis at the CO2 concentration of 800 µl/liter; survival rate of all stages also significantly increased (e.g., survival rate of first instar increased 17.80%), adult longevity of both female and male extended (e.g., female increased 2.02 d on average), and both fecundity and daily eggs laid per female were higher at a CO2 concentration of 800 µl/liter than at 400 µl/liter. Developmental duration of F. intonsa decreased, insignificantly, at a CO2 concentration of 800 µl/liter. Unlike F. occidentalis, survival rate of F. intonsa declined considerably at higher CO2 concentration level (e.g., survival rate of first instar decreased 19.70%), adult longevity of both female and male curtailed (e.g., female reduced 3.82 d on average), and both fecundity and daily eggs laid per female were reduced to 24.86 and 0.83, respectively, indicating that there exist significant differences between the two CO2 levels. Results suggest that the population fitness of invasive thrips species might be enhanced with increase in CO2 concentration, and accordingly change the local thrips population composition with their invasion.
在高二氧化碳浓度条件下，对入侵外来蓟马物种西花蓟马（Frankliniella occidentalis (Pergande)）和相关本地物种八节黄蓟马（Frankliniella intonsa (Trybom)）的发育和繁殖力进行了研究。结果表明，这两种蓟马物种对升高的二氧化碳浓度反应不同。在800微升/升的二氧化碳浓度下，西花蓟马的发育历期显著缩短（11.93%）；各龄期的存活率也显著提高（例如，一龄若虫的存活率提高了17.80%），雌雄成虫的寿命均延长（例如，雌虫平均延长2.02天），且在800微升/升二氧化碳浓度下的繁殖力和单雌日产卵量均高于400微升/升时。在800微升/升的二氧化碳浓度下，八节黄蓟马的发育历期略有缩短。与西花蓟马不同，在较高二氧化碳浓度水平下，八节黄蓟马的存活率大幅下降（例如，一龄若虫的存活率下降了19.70%），雌雄成虫的寿命均缩短（例如，雌虫平均缩短3.82天），繁殖力和单雌日产卵量分别降至24.86和0.83，表明这两个二氧化碳水平之间存在显著差异。结果表明，入侵蓟马物种的种群适合度可能会随着二氧化碳浓度的增加而提高，并因此随着它们的入侵改变当地蓟马种群组成。
