Feeding response of the tropical copepod Acartia erythraea to short-term thermal stress: more animal-derived food was consumed

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院海洋生物资源可持续利用重点实验室

	Feeding response of the tropical copepod Acartia erythraea to short-term thermal stress: more animal-derived food was consumed
	Liu, Sheng ; Huang, Hui 3; Li, Tao 3; Wan, Lingli 1; Hu, Simin
刊名	PEERJ
	2018
卷号	6 页码:e6129
关键词	Feeding response Thermal pollution Tropical coastal ecosystem Copepod
ISSN号	2167-8359
英文摘要	The objective of this study was to explore the feeding response of tropical copepods to short-term thermal shock and provide insight into the potential impact of coastal power plants on the trophic dynamics of tropical coastal ecosystems. Feeding experiments were conducted at three different temperatures (29 degrees C, 33 degrees C, and 35 degrees C) using the copepod Acartia erythraea, collected from Sanya Bay, China. The grazing rate of A. erythraea decreased dramatically in the high temperature treatment. Analysis of 18S rDNA clone libraries revealed that the diet of copepods from different treatments was mainly comprised of diatoms, metazoans, and protozoans; A. erythraea exhibited an obvious feeding preference shift with temperature, with a change from a diatom-dominated diet at 29 degrees C to a metazoan-dominated diet at 35 degrees C, and the omnivory index shifted from 0.1 to 2.84 correspondingly. Furthermore, A. erythraea showed a positive feeding response to plant food (i.e., phytoplankton and land plants) in the control treatment (29 degrees C), but a positive response to animal prey (i.e., metazoans and protozoans) at temperatures exceeding 33 degrees C, as evaluated by the Ivley's selectivity index. Our results suggest that copepods could regulate their food intake by considering their energy demands when exposed to short-term thermal stress, which might influence the pathway of materials moving up the trophic system. However, further studies are required to elucidate the effects of elevated temperature on feeding of different organisms in order to predict the influence of thermal pollution on the food web of tropical coastal ecosystems.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/17590]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
作者单位	1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangdong Prov Key Lab Appl Marine Biol, Guangzhou, Guangdong, Peoples R China 2.Chinese Acad Sci, Trop Marine Biol Res Stn Hainan, Sanya, Hainan, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Sheng,Huang, Hui,Li, Tao,et al. Feeding response of the tropical copepod Acartia erythraea to short-term thermal stress: more animal-derived food was consumed[J]. PEERJ,2018,6:e6129.
APA	Liu, Sheng,Huang, Hui,Li, Tao,Wan, Lingli,&Hu, Simin.(2018).Feeding response of the tropical copepod Acartia erythraea to short-term thermal stress: more animal-derived food was consumed.PEERJ,6,e6129.
MLA	Liu, Sheng,et al."Feeding response of the tropical copepod Acartia erythraea to short-term thermal stress: more animal-derived food was consumed".PEERJ 6(2018):e6129.