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- Title
The Influence of Elevated CO<sub>2</sub> Concentration on the Fitness Traits of Frankliniella occidentalis and Frankliniella intonsa (Thysanoptera: Thripidae).
- Authors
He ShuQi; Lin Ying; Qian Lei; Li ZhiHua; Xi Chao; Yang Lu; Gui FuRong
- Abstract
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 ml/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 ml/liter than at 400 ml/liter. Developmental duration of F. intonsa decreased, insignificantly, at a CO2 concentration of 800 ml/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.
- Subjects
FRANKLINIELLA occidentalis; THRIPS; INSECTS; PHLAEOTHRIPIDAE; THRIPIDAE
- Publication
Environmental Entomology, 2017, Vol 46, Issue 3, p722
- ISSN
0046-225X
- Publication type
Article
- DOI
10.1093/ee/nvx083