https://scholars.lib.ntu.edu.tw/handle/123456789/378754
標題: | Preference and Performance in Plant-Herbivore Interactions across Latitude-A Study in U.S. Atlantic Salt Marshes | 作者: | CHUAN-KAI HO | 公開日期: | 2013 | 卷: | 8 | 期: | 3 | 來源出版物: | PLoS ONE | 摘要: | High-latitude plants are often more palatable to herbivores than low-latitude conspecifics. Does increased plant palatability lead to better herbivore performance? Our field and laboratory work investigated (A) whether high-latitude plants have traits indicating that they should be higher-quality foods for herbivores; (B) whether geographic differences in plant quality are more important than local adaptation of herbivores. We studied 3 plant species and 6 invertebrate herbivores in U.S. Atlantic Coast. Past studies had shown high-latitude individuals of these plants are more palatable than low-latitude conspecifics. We documented plant traits and herbivore performance (body size) in the field across latitude. We collected individuals from different latitudes for factorial (plant region x herbivore region) laboratory experiments, examining how herbivore performance was affected by plant region, herbivore region, and their interaction (i.e., local adaptation). Field surveys suggested high-latitude plants were likely of higher quality to herbivores. Leaf nitrogen content in all plant species increased toward high latitudes, consistent with lower leaf C/N and higher leaf chlorophyll content at high latitudes. Furthermore, leaf toughness decreased toward higher latitudes in 1 species. The body size of 4 herbivore species increased with latitude, consistent with high-latitude leaves being of higher quality, while 2 grasshopper species showed the opposite pattern, likely due to life-history constraints. In the laboratory, high-latitude plants supported better performance in 4 herbivore species (marginal in the 5th). The geographic region where herbivores were collected affected herbivore performance in all 6 species; however, the pattern was mixed, indicating a lack of local adaptation by herbivores to plants from their own geographic region. Our results suggest that more-palatable plants at high latitudes support better herbivore growth. Given that geographic origin of either plants or herbivores can affect herbivore performance, the nature of plant-herbivore interactions is likely to change if climate change "reshuffles" plant and herbivore populations across latitude. © 2013 Ho, Pennings. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84875344672&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/378754 |
DOI: | 10.1371/journal.pone.0059829 | SDG/關鍵字: | adaptation; agronomic trait; aphid; article; Asteraceae; beetle; body height; body size; Caelifera; chlorophyll content; controlled study; experimental study; field study; food preference; food quality; geographical variation (species); high latitude; invertebrate; Iva frutescens; latitude; leaf nitrogen content; leaf toughness; low latitude; nonhuman; palatability; plant herbivore interaction; plant parameters; planthopper; Poaceae; salt marsh; Solidago; Solidago sempervirens; spartina alterniflora; United States; Animals; Herbivory; Invertebrates; Plants; United States |
顯示於: | 生態學與演化生物學研究所 |
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