Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1186/s12898-018-0173-0 |
Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae | |
Liu, Deguang1,2; Dai, Peng1,2; Li, Shirong1,2; Ahmed, Syed Suhail1,2; Shang, Zheming1,2; Shi, Xiaoqin1,2 | |
通讯作者 | Liu, Deguang |
来源期刊 | BMC ECOLOGY |
ISSN | 1472-6785 |
出版年 | 2018 |
卷号 | 18 |
英文摘要 | Background: Drought may become one of the greatest challenges for cereal production under future warming scenarios, and its impact on insect pest outbreaks is still controversial. To address this issue, life-history responses of the English grain aphid, Sitobion avenae (Fabricius), from three areas of different drought levels were compared under three water treatments. Results: Significant differences were identified in developmental time, fecundity and adult weight among S. avenae clones from moist, semiarid and arid areas under all the three water treatments. Semiarid and arid area clones tended to have higher heritability for test life-history traits than moist area clones. We identified significant selection of water-deficit on the developmental time of 1st instar nymphs and adult weight for both semiarid and arid area clones. The impact of intermediate and severe water-stress on S. avenae’s fitness was neutral and negative (e.g., decreased fecundity and weight), respectively. Compared with arid-area clones, moist- and semiarid-area clones showed higher extents of adaptation to the water-deficit level of their respective source environment. Adult weight was identified as a good indicator for S. avenae’s adaptation potential under different water-stress conditions. After their exposure to intermediate water-deficit stress for only five generations, adult weight and fecundity tended to decrease for moist- and semiarid-area clones, but increase for arid-area clones. Conclusions: It is evident from our study that S. avenae clones from moist, semiarid and arid areas have diverged under different water-deficit stress, and such divergence could have a genetic basis. The impact of drought on S. avenae’s fitness showed a water-level dependent pattern. Clones of S. avenae were more likely to become adapted to intermediate water-deficit stress than severe water-deficit stress. After continuous water-deficit stress of only five generations, the adaptation potential of S. avenae tended to decrease for moist and semiarid area clones, but increase for arid area clones. The rapid shift of aphids’ life-history traits and adaptation potential under drought could have significant implications for their evolutionary dynamics and outbreak risks in future climate change scenarios. |
英文关键词 | Drought Water-deficit stress Global warming Life-history traits Genetic divergence Adaptation potential |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000434044600001 |
WOS关键词 | PLANT DROUGHT-STRESS ; DIFFERENTIAL PERFORMANCE ; HERBIVORE PERFORMANCE ; FITNESS TRAITS ; VIGOR ; NITROGEN ; WHEAT ; SPECIALIZATION ; POPULATIONS ; HOMOPTERA |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 西北农林科技大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/208177 |
作者单位 | 1.Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling, Shaanxi, Peoples R China; 2.Northwest A&F Univ, Coll Plant Protect, Yangling, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Deguang,Dai, Peng,Li, Shirong,et al. Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae[J]. 西北农林科技大学,2018,18. |
APA | Liu, Deguang,Dai, Peng,Li, Shirong,Ahmed, Syed Suhail,Shang, Zheming,&Shi, Xiaoqin.(2018).Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae.BMC ECOLOGY,18. |
MLA | Liu, Deguang,et al."Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae".BMC ECOLOGY 18(2018). |
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