Carbon, nitrogen and lipid content and egg and pellet production of female C. hyperboreus in situ and during incubation experiments ...

• Main Authors: Henriksen, Marie Vestergaard, Jung-Madsen, Signe, Nielsen, Torkel Gissel, Møller, Eva Friis, Henriksen, Karen Vestergaard, Markager, Stiig, Hansen, Benni Winding
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2012
• Subjects: Bottle, Niskin 30-L; International Polar Year 2007-2008 IPY; Arctic copepod; Calanus hyperboreus; Disko Bay; Greenland; International Polar Year; IPY
• Online Access: https://dx.doi.org/10.1594/pangaea.811157; https://doi.pangaea.de/10.1594/PANGAEA.811157

The effects of temperature and food availability on feeding and egg production of the Arctic copepod Calanus hyperboreus were investigated in Disko Bay, western Greenland, from winter to spring 2009. The abundance of females in the near bottom layer and the egg production of C. hyperboreus prior to the spring bloom document that reproduction relies on lipid stores. The maximum in situ egg production (± SE) of 54 ± 8 eggs female/d was recorded in mid-February at chlorophyll a concentrations below 0.1 µg/l, whereas no egg production was observed in mid-April when the spring bloom developed. After reproduction, the females migrated to the surface layer to exploit the bloom and refill their lipid stores. In 2 laboratory experiments, initiated before and during the spring bloom, mature females were kept with and without food at 5 different temperatures ranging from 0 to 10°C and the fecal pellet and egg production were monitored. Food had a clear effect on fecal pellet production but no effect on egg production, ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...