Lipids and life strategies of Calanus finmarchicus , Calanus glacialis and Calanus hyperboreus in late autumn, Kongsfjorden, Svalbard

Polar Biology ◽  
2000 ◽  
Vol 23 (7) ◽  
pp. 510-516 ◽  
Author(s):  
Catherine L. Scott ◽  
S. Kwasniewski ◽  
Stig Falk-Petersen ◽  
John R. Sargent
Keyword(s):  
Calanus Finmarchicus ◽  
Life Strategies ◽  
Late Autumn ◽  
Calanus Glacialis ◽  
Calanus Hyperboreus

Metabolic fingerprinting of arctic copepods Calanus finmarchicus, Calanus glacialis and Calanus hyperboreus

Polar Biology ◽  
2013 ◽  
Vol 36 (11) ◽  
pp. 1577-1586 ◽  
Author(s):  
Bjørn Henrik Hansen ◽  
Kristin Degnes ◽  
Ida Beathe Øverjordet ◽  
Dag Altin ◽  
Trond R. Størseth
Keyword(s):  
Metabolic Fingerprinting ◽  
Calanus Finmarchicus ◽  
Calanus Glacialis ◽  
Calanus Hyperboreus

scholarly journals Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis

2015 ◽  
Vol 73 (3) ◽  
pp. 927-936 ◽  
Author(s):  
Nicole Hildebrandt ◽  
Franz J. Sartoris ◽  
Kai G. Schulz ◽  
Ulf Riebesell ◽  
Barbara Niehoff
Keyword(s):  
Body Mass ◽  
Calanus Finmarchicus ◽  
High Pco2 ◽  
Calanoid Copepods ◽  
Additional Energy ◽  
Ingestion Rates ◽  
Energy Demands ◽  
Seawater Ph ◽  
Calanus Glacialis ◽  
Acid Base Status

Abstract It is currently under debate whether organisms that regulate their acid–base status under environmental hypercapnia demand additional energy. This could impair animal fitness, but might be compensated for via increased ingestion rates when food is available. No data are yet available for dominant Calanus spp. from boreal and Arctic waters. To fill this gap, we incubated Calanus glacialis at 390, 1120, and 3000 µatm for 16 d with Thalassiosira weissflogii (diatom) as food source on-board RV Polarstern in Fram Strait in 2012. Every 4 d copepods were subsampled from all CO2 treatments and clearance and ingestion rates were determined. During the SOPRAN mesocosm experiment in Bergen, Norway, 2011, we weekly collected Calanus finmarchicus from mesocosms initially adjusted to 390 and 3000 µatm CO2 and measured grazing at low and high pCO2. In addition, copepods were deep frozen for body mass analyses. Elevated pCO2 did not directly affect grazing activities and body mass, suggesting that the copepods did not have additional energy demands for coping with acidification, neither during long-term exposure nor after immediate changes in pCO2. Shifts in seawater pH thus do not seem to challenge these copepod species.

The Copepods Calanus glacial is Jaschnov and Calanus finmarchicus (Gunnerus) in Canadian Arctic-Subarctic Waters

1961 ◽  
Vol 18 (5) ◽  
pp. 663-678 ◽  
Author(s):  
E. H. Grainger
Keyword(s):  
North America ◽  
North Atlantic ◽  
Canadian Arctic ◽  
Atlantic Water ◽  
Calanus Finmarchicus ◽  
Subarctic Region ◽  
The North ◽  
Calanus Glacialis ◽  
History Of ◽  
The North Atlantic

The literature on Calanus finmarchicus (Gunnerus) in arctic-subarctic Canada is reviewed, and the history of the 2-size-group phenomenon in the North Atlantic subarctic region is discussed. Calanus glacialis Jaschnov is briefly described, and compared with material from North America, the characters emphasized being size and the structure of the fifth legs. It is concluded that specimens from arctic and subarctic North America agree essentially with C. glacialis, those from the subarctic and north boreal regions with C. finmarchicus. Occurrence of the 2 species in northern North America is given, that of the large glacialis alone being shown to coincide closely with the known extent of unmixed polar water, of the 2 together to occupy the region of mixed polar and Atlantic water, and of the small finmarchicus alone to inhabit Atlantic water.

scholarly journals Annual cycle of lipid content and lipid class composition in zooplankton from the Beaufort Sea shelf, Canadian Arctic

2016 ◽  
Vol 73 (5) ◽  
pp. 747-758 ◽  
Author(s):  
Tara L. Connelly ◽  
Tara N. Businski ◽  
Don Deibel ◽  
Christopher C. Parrish ◽  
Piotr Trela
Keyword(s):  
Lipid Class ◽  
Lipid Content ◽  
Canadian Arctic ◽  
Total Lipid Content ◽  
Beaufort Sea ◽  
Lipid Class Composition ◽  
Class Composition ◽  
Calanus Glacialis ◽  
Calanus Hyperboreus ◽  
Carbon And Nitrogen Content

We determined seasonal cycles of lipid content, lipid class composition, and carbon and nitrogen content of seven taxa of zooplankton that were collected from the Beaufort Sea shelf, Canadian Arctic, over a 10-month period (September 2003 – August 2004). All taxa except the chaetognath Parasagitta elegans had substantial lipids stores (>50%), either seasonally (Oikopleura spp.) or throughout the year (Calanus hyperboreus, Calanus glacialis, Paraeuchaeta glacialis, Metridia longa, and Eukrohnia hamata). Wax esters were the dominant lipid class in the chaetognath Eukrohnia hamata and in all copepods, including the carnivore Paraeuchaeta glacialis. Seasonal trends in lipid content and composition varied among taxa; some taxa had little variation from winter through summer (e.g., Parasagitta elegans), other taxa showed little variation until summer (e.g., Calanus glacialis), and others showed increasing or decreasing trends during winter and spring (e.g., Calanus hyperboreus). Specifically, total lipid content of Calanus hyperboreus decreased from January through May at a rate of ∼450 μg·month−1·individual−1 in adult females and ∼100 μg·month−1·individual−1 in juvenile copepodite IV, representing a 75%–85% loss in lipid.

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