DOI: 10.1111/ele.12882
Scopus记录号: 2-s2.0-85037640580
论文题名: Understanding the stoichiometric limitation of herbivore growth: the importance of feeding and assimilation flexibilities
作者: Urabe J. ; Shimizu Y. ; Yamaguchi T.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期: 2 起始页码: 197
结束页码: 206
语种: 英语
英文关键词: Algal diversity
; assimilation enhancement
; carbon dioxide
; compensatory feeding
; Daphnia
; ecological stoichiometry
; growth rate
; herbivorous plankton
; nutritional complementarity
; phosphorus
Scopus关键词: algae
; Daphnia
英文摘要: Ecological stoichiometry suggests that herbivore growth is limited by phosphorus when this element in the diet is < 8.6 μg P mg C−1 (C : P atomic ratio > 300). However, in nature, it is not necessarily related to the relative phosphorus content in diets. This may be the result of complex feeding and assimilation responses to diets. We examined these possibilities using herbivorous plankton fed mono-specific and mixed algae varying in phosphorus content of 1.6 to 8.1 μg P mg C−1. The herbivores showed a 10-fold growth rate difference among the diets. Growth rates related poorly with phosphorus content in the diets (r2 = 0.07), better with P ingestion rate (r2 = 0.41) and best with phosphorus assimilation rate (r2 = 0.69). Inclusion of assimilation rates for carbon and fatty acids increased 7% of the explained growth variance. These results indicate that the feeding and assimilation flexibilities play pivotal roles in acquiring a deficient element and in regulating growth rate. © 2017 John Wiley & Sons Ltd/CNRS Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107497
Appears in Collections: 气候减缓与适应
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作者单位: Graduate school of Life Sciences, Tohoku University, 6-3 Aramaki aza Aoba, Sendai, Japan; Graduate school of Agriculture, Tohoku University, 568-1 Aramaki aza Aoba, Sendai, Japan
Recommended Citation:
Urabe J.,Shimizu Y.,Yamaguchi T.. Understanding the stoichiometric limitation of herbivore growth: the importance of feeding and assimilation flexibilities[J]. Ecology Letters,2018-01-01,21(2)