气候变化领域集成服务门户(CCPortal): A microcalorimetric approach for investigating stoichiometric constraints on the standard metabolic rate of a small invertebrate

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DOI	10.1111/ele.13137
	A microcalorimetric approach for investigating stoichiometric constraints on the standard metabolic rate of a small invertebrate
	Ruiz T.; Bec A.; Danger M.; Koussoroplis A.-M.; Aguer J.-P.; Morel J.-P.; Morel-Desrosiers N.
发表日期	2018
ISSN	1461023X
卷号	21 期号:11
英文摘要	Understanding the determinants of metabolism is a core ecological topic since it permits to link individual energetic requirements to the ecology of communities and ecosystems. Yet, besides temperature, metabolic responses to environmental factors remain poorly understood. For example, it is commonly assumed that dietary stoichiometric constraints increase metabolism of small invertebrates despite scarce experimental support. Here, we used microcalorimetric measurements to determine the standard metabolic rate (SMR) of Daphnia magna fed stoichiometrically balanced (C/P: 166) or imbalanced (C/P: 1439). Daphnids fed imbalanced maintained their stoichiometric homeostasis within narrow boundaries. However, they consistently increased their SMR while decreasing their growth rate. Our measurements demonstrate that homeostatic regulation implies higher metabolic costs, thereby reducing available energy for growth. We demonstrate that microcalorimetry is a powerful and precise tool for measuring small-sized organisms’ metabolic rate, thus opening promising perspectives for understanding how environmental factors, such as nutritional constraints, affect organismal metabolism. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	Calorimetry; Daphnia magna; ecological stoichiometry; energy budget; homeostasis; metabolic rate
语种	英语
scopus关键词	calorimetry; community ecology; energy budget; environmental factor; homeostasis; invertebrate; metabolism; stoichiometry; Daphnia magna; Daphniidae; Invertebrata; animal; Daphnia; energy metabolism; metabolism; temperature; Animals; Daphnia; Energy Metabolism; Temperature
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121226
作者单位	Université Clermont Auvergne, CNRS, LMGE, Clermont-Ferrand, F-63000, France; Université de Lorraine, CNRS, LIEC, Metz, F-57000, France
推荐引用方式 GB/T 7714	Ruiz T.,Bec A.,Danger M.,et al. A microcalorimetric approach for investigating stoichiometric constraints on the standard metabolic rate of a small invertebrate[J],2018,21(11).
APA	Ruiz T..,Bec A..,Danger M..,Koussoroplis A.-M..,Aguer J.-P..,...&Morel-Desrosiers N..(2018).A microcalorimetric approach for investigating stoichiometric constraints on the standard metabolic rate of a small invertebrate.Ecology Letters,21(11).
MLA	Ruiz T.,et al."A microcalorimetric approach for investigating stoichiometric constraints on the standard metabolic rate of a small invertebrate".Ecology Letters 21.11(2018).