Arid
DOI10.1007/s11829-015-9387-7
Leaf traits, water stress, and insect herbivory: Is food selection a hierarchical process?
Bisigato, Alejandro J.1,2; Sain, Claudia L.1; Campanella, M. Victoria1; Cheli, German H.1
通讯作者Bisigato, Alejandro J.
来源期刊ARTHROPOD-PLANT INTERACTIONS
ISSN1872-8855
EISSN1872-8847
出版年2015
卷号9期号:5页码:477-485
英文摘要

Plant water stress can affect selectivity by insect herbivores. Numerous studies have shown greater insect preference for water-stressed plants, but others have reported the opposite response. We evaluated leaf consumption by adults of Nyctelia circumundata (a chewing insect) in leaves of Larrea divaricata and Prosopis alpataco. Three bioassays (two-way choice tests) were performed: two intra-specific comparisons between well-watered (+W) and water-stressed (-W) leaves of each species and one inter-specific comparison between leaves of the two species. Leaf biomass was reduced by water stress in both species. Nitrogen concentration in leaves (N) was reduced by drought in P. alpataco. In contrast, total phenolics and specific leaf area (SLA) did not differ between treatments within species. Nyctelia circumundata did not show preference by any water supply regimes in intra-specific comparisons. In contrast, in inter-specific choice tests, it showed a marked preference for P. alpataco, which is the species with the highest nitrogen concentration and lowest total phenolics concentration. In intra-specific comparisons, maximum leaf consumption was inversely related to SLA in both species. Furthermore, in P. alpataco, N concentration was positively related to maximum leaf consumption and negatively related to leaf water content (LWC). In contrast, in inter-specific comparisons, total phenolics was negatively related to maximum leaf consumption, while N concentration exhibited the opposite trend. These results suggest that food selection is a hierarchical process where chemical attributes (i.e., total phenolics and N) are taken into account for species selection, and physical attributes (i.e., SLA and LWC) for choosing individuals inside species.


英文关键词Larrea divaricata Prosopis alpataco Nyctelia circumundata Drought Consumption
类型Article
语种英语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000361056600005
WOS关键词FEEDING-PREFERENCE EXPERIMENTS ; PLANT VIGOR HYPOTHESIS ; DROUGHT STRESS ; DESERT GRASSHOPPER ; SITKA SPRUCE ; PERFORMANCE ; AVAILABILITY ; RESISTANCE ; QUALITY ; CHOICE
WOS类目Ecology ; Entomology
WOS研究方向Environmental Sciences & Ecology ; Entomology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186003
作者单位1.CENPAT CONICET, RA-9120 Puerto Madryn, Chubut, Argentina;
2.Univ Nacl Patagonia San Juan Bosco, RA-9120 Puerto Madryn, Argentina
推荐引用方式
GB/T 7714
Bisigato, Alejandro J.,Sain, Claudia L.,Campanella, M. Victoria,et al. Leaf traits, water stress, and insect herbivory: Is food selection a hierarchical process?[J],2015,9(5):477-485.
APA Bisigato, Alejandro J.,Sain, Claudia L.,Campanella, M. Victoria,&Cheli, German H..(2015).Leaf traits, water stress, and insect herbivory: Is food selection a hierarchical process?.ARTHROPOD-PLANT INTERACTIONS,9(5),477-485.
MLA Bisigato, Alejandro J.,et al."Leaf traits, water stress, and insect herbivory: Is food selection a hierarchical process?".ARTHROPOD-PLANT INTERACTIONS 9.5(2015):477-485.
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