Growth and survival of Neoceratium hexacanthum and Neoceratium candelabrum under simulated nutrient-depleted conditions
Growth and survival of Neoceratium hexacanthum and Neoceratium candelabrum under simulated nutrient-depleted conditions
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模拟营养耗尽条件下 Neoceratium hexacanthum 和 Neoceratium candelabrum 的生长和存活
DOI:
10.1093/plankt/fbt098
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发表时间:
2014
影响因子:
2.1
通讯作者:
Aldridge D
中科院分区:
文献类型:
--
作者:
Aldridge D
The dinoflagellateNeoceratiumis commonly observed in oceanic waters, depleted in major inorganic nutrients such as nitrogen and phosphorus. Using culture isolates, we investigated whether twoNeoceratiumspecies (N. hexacanthumandN. candelabrum) can grow phototrophically at low nutrient concentrations found in surface waters of oligotrophic subtropical gyres (OSGs). No phototrophic growth (indicated by changes in cell numbers, the presence of dividing cells or cellular protein increase) was observed whenN. hexacanthumandN. candelabrumwere grown in low nutrient seawater. In separate experiments, to determine survival time under oligotrophic nutrient conditions, 68% ofN. hexacanthumcells were able to re-establish growth after spending 1–10 days in North Atlantic gyre seawater; 40% recovered after 11–20 days and only 3% recovered after 21–30 days. The longest period any single cell survived, and then went on to divide, was 26 days. These findings demonstrate thatNeoceratiumcells could remain viable for >3 weeks in surface waters of OSGs, but to sustain their growth nutrients must be obtained periodically from an alternative source: via ephemeral upwelling of nutrient-rich waters, phagotrophy and/or movement to and from the nutricline.
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影响因子:
2.7
作者:
S. Heaney;T. I. Furnass
通讯作者:
T. I. Furnass
影响因子:
2
作者:
C. Weiler;R. Eppley
通讯作者:
R. Eppley
DOI:
--
发表时间:
2007
期刊:
Journal of Oceanography 63
影响因子:
--
作者:
Baek;S.H.;Shimode;S.;Kikuchi;T.
通讯作者:
T.
影响因子:
2.3
作者:
H. W. Graham;N. Bronikovsky
通讯作者:
N. Bronikovsky
影响因子:
2.9
作者:
C. S. Weiler;D. Karl
通讯作者:
D. Karl