Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Guizhou Provincial Engineering Research Center for Biological Resources Protection and Efficient Utilization of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang, China.
Tea Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, China.
J Econ Entomol. 2023 Apr 24;116(2):416-425. doi: 10.1093/jee/toad026.
Increased atmospheric CO2 concentrations may directly affect insect behavior. Thrips hawaiiensis Morgan and T. flavus Schrank are economically important thrips pests native to China. We studied the development, survival, and oviposition of these two thrips under elevated CO2 concentrations (800 μl liter-1) and ambient CO2 (400 μl liter-1; control) conditions. Both thrips species developed faster but had lower survival rates under elevated CO2 levels compared with control conditions (developmental time: 13.25 days vs. 12.53 days in T. hawaiiensis, 12.18 days vs. 11.61 days in T. flavus; adult survival rate: 70.00% vs. 64.00% in T. hawaiiensis, 65.00% vs. 57.00% in T. flavus under control vs. 800 μl liter-1 CO2 conditions, respectively). The fecundity, net reproductive rate (R0), and intrinsic rate of increase (rm) of the two species were also lower under elevated CO2 concentrations (fecundity: 47.96 vs. 35.44 in T. hawaiiensis, 36.68 vs. 27.88 in T. flavus; R0: 19.83 vs. 13.62 in T. hawaiiensis, 14.02 vs. 9.86 in T. flavus; and rm: 0.131 vs. 0.121 in T. hawaiiensis, 0.113 vs. 0.104 in T. flavus under control and 800 μl liter-1 CO2 conditions, respectively). T. hawaiiensis developed slower but had a higher survival rate, fecundity, R0, and rm compared with T. flavus at each CO2 concentration. In summary, elevated CO2 concentrations negatively affected T. hawaiiensis and T. flavus populations. In a world with higher CO2 concentrations, T. hawaiiensis might be competitively superior to T. flavus where they co-occur.
大气中二氧化碳浓度的增加可能会直接影响昆虫的行为。夏威夷蓟马 Morgan 和黄蓟马 Schrank 是原产于中国的两种重要经济上的蓟马害虫。我们研究了这两种蓟马在高浓度二氧化碳（800μl/L）和环境二氧化碳（400μl/L；对照）条件下的发育、存活和产卵情况。与对照条件相比，这两种蓟马在高浓度二氧化碳条件下发育更快，但存活率较低（T. hawaiiensis 的发育时间：13.25 天对 12.53 天，T. flavus 的发育时间：12.18 天对 11.61 天；成虫存活率：T. hawaiiensis 为 70.00%对 64.00%，T. flavus 为 65.00%对 57.00%，而在对照和 800μl/L CO2 条件下，分别）。两种蓟马的繁殖力、净生殖率（R0）和内禀增长率（rm）也较低（T. hawaiiensis 的繁殖力：47.96 对 35.44，T. flavus 的繁殖力：36.68 对 27.88；R0：T. hawaiiensis 的 R0：19.83 对 13.62，T. flavus 的 R0：14.02 对 9.86；rm：T. hawaiiensis 的 rm：0.131 对 0.121，T. flavus 的 rm：0.113 对 0.104，在对照和 800μl/L CO2 条件下，分别）。在每个 CO2 浓度下，与 T. flavus 相比，T. hawaiiensis 发育较慢，但存活率、繁殖力、R0 和 rm 更高。总之，高浓度二氧化碳对 T. hawaiiensis 和 T. flavus 种群有负面影响。在二氧化碳浓度较高的世界中，T. hawaiiensis 可能比 T. flavus 更具竞争力，因为它们共同存在。
