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Effects of temperature and food availability on feeding and egg production of Calanus hyperboreus from Disko Bay, western Greenland
- Source :
- Henriksen, M V, Jung-Madsen, S, Nielsen, T G, Møller, E F, Henriksen, K V, Markager, S & Hansen, B W 2012, ' Effects of temperature and food availability on feeding and egg production of Calanus hyperboreus from Disko Bay, Western Greenland ', Marine Ecology-Progress Series, vol. 447, pp. 109-126 . https://doi.org/10.3354/meps09421, Henriksen, M V, Jung-Madsen, S, Nielsen, T G, Møller, E F, Henriksen, K V, Markager, S & Hansen, B W 2012, ' Effects of temperature and food availability on feeding and egg production of Calanus hyperboreus from Disko Bay, western Greenland ', Marine Ecology-Progress Series, vol. 447, pp. 109-126 . https://doi.org/10.3354/meps09421
- Publication Year :
- 2012
- Publisher :
- Inter-Research Science Center, 2012.
-
Abstract
- 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 −1 d −1 was recorded in mid-February at chlorophyll a concentrations below 0.1 µg l −1 , 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, while temperature did not have an effect on egg or fecal pellet production in any of the experiments. Analyses of carbon and lipid content of the females before and after the experiments did not reflect any effect of food or temperature in the pre-bloom experiment, whereas in the bloom experiment a clear positive effect of food was detected in female biochemical profiles. The lack of a temperature response suggests a future warmer ocean could be unfavorable for C. hyperboreus compared to smaller Calanus spp. which are reported to exploit minor temperature elevations for increased egg production.
- Subjects :
- Egg production
0106 biological sciences
Chlorophyll a
010504 meteorology & atmospheric sciences
media_common.quotation_subject
Aquatic Science
01 natural sciences
chemistry.chemical_compound
Effect of temperature
Animal science
effect of temperature
Pellet
14. Life underwater
Ecology, Evolution, Behavior and Systematics
fecal pellet production
0105 earth and related environmental sciences
media_common
Calanus hyperboreus
Ecology
biology
010604 marine biology & hydrobiology
egg production
Fecal pellet production
Spring bloom
biology.organism_classification
chemistry
Calanus
Reproduction
Bloom
Bay
Copepod
Subjects
Details
- ISSN :
- 16161599 and 01718630
- Volume :
- 447
- Database :
- OpenAIRE
- Journal :
- Marine Ecology Progress Series
- Accession number :
- edsair.doi.dedup.....8e86b628f9da009f57cbbf293c27c8e0