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学科主题: 物理化学
题名: Experimental silicon demand by the sponge Hymeniacidon perlevis reveals chronic limitation in field populations
作者: Maldonado, Manuel1;  Cao, Heng2;  Cao, Xupeng2;  Song, Yuefan2;  Qu, Yi2;  Zhang, Wei2, 3, 4
通讯作者: MaldonadoManuel
关键词: Silicate ;  Sponge ;  Porifera ;  Nutrient limitation ;  Benthic-pelagic coupling
刊名: HYDROBIOLOGIA
发表日期: 2012-05-01
DOI: 10.1007/s10750-011-0977-9
卷: 687, 期:1, 页:251-257
收录类别: SCI
文章类型: Article
部门归属: 18
项目归属: 1812
产权排名: 2,2
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
英文摘要: Dissolved silicon (DSi) is a key marine nutrient. Sponges and diatoms are relevant DSi consumers, but sponges appear to have a less efficient uptake system that requires higher ambient DSI concentrations for maximum uptake. We experimentally tested whether a sponge adapted to live at the intertidal (Hymeniacidon perlevis) also shows such a need for high DSi. Under laboratory conditions, sponges were exposed to both the natural DSi concentration (10 mu M) and much higher levels (25, 40, and 70 mu M) for 36 h, being water samples taken at 6 h intervals to infer DSi uptake. Uptake rates shifted over time (particularly in high DSi treatments) and showed moderate inter-individual variability. Average DSi uptake rate at 70 mu M was twice higher than those at 40 and 25 mu M, which in turn were not significantly different from each other, but were twice higher than the uptake rate at 10 mu M. Therefore, H. perlevis needs, for efficient uptake, ambient DSi concentrations two to four times higher than the maximum available in its natural habitat. From an eco-physiological point of view, it means that the skeletal growth in the populations of H. perlevis is chronically limited by DSi availability, a limitation that may favor sponge evolution toward skeletal slimming.
关键词[WOS]: HALICHONDRIA PANICEA ;  SUBERITES-DOMUNCULA ;  ORGANIC-CARBON ;  KIEL BIGHT ;  MARINE ;  DIATOMS ;  BUDGETS ;  SHELF ;  SINK ;  SEA
语种: 英语
WOS记录号: WOS:000303066300021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118389
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Ctr Estudios Avanzados Blanes CEAB CSIC, Dept Marine Ecol, Blanes 17300, Girona, Spain
2.Chinese Acad Sci, Dalian Inst Chem Phys, Marine Bioprod Engn Grp, Dalian 116023, Peoples R China
3.Flinders Univ S Australia, Sch Med, Flinders Ctr Marine Bioprod Dev, Adelaide, SA 5042, Australia
4.Flinders Univ S Australia, Sch Med, Dept Med Biotechnol, Adelaide, SA 5042, Australia

Recommended Citation:
Maldonado, Manuel,Cao, Heng,Cao, Xupeng,et al. Experimental silicon demand by the sponge Hymeniacidon perlevis reveals chronic limitation in field populations[J]. HYDROBIOLOGIA,2012,687(1):251-257.
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