Biological traits, and egg and fecal pellet production of Calanus finmarchicus and Calanus glacialis in situ and during experiments

The effects of temperature and food was examined for Calanus finmarchicus and C. glacialis during 3 phases of the phytoplankton spring bloom in Disko Bay, western Greenland. The 2 species were collected during pre-bloom, bloom, and post-bloom and exposed to temperatures from 0 to 10°C, combined with deficient or excess food. Fecal pellet and egg production were measured as indices for grazing and secondary production, respectively. Furthermore, changes in body carbon, nitrogen, and lipid content were measured. C. glacialis sampled before the bloom and incubated with excess food exhibited high specific egg production at temperatures between 0 and 2.5°C. Higher temperatures did not increase egg production considerably, whereas egg production for C. finmarchicus more than tripled between 2.5 and 5°C. Starved C. glacialis produced eggs at all temperatures stimulated by increasing temperatures, whereas starved C. finmarchicus needed temperatures above 5°C to produce eggs fueled by their lipid stores. Few C. finmarchicus had mature gonads at the initiation of the pre-bloom and bloom experiment, and egg production of C. finmarchicus therefore only increased as the ratio of individuals with mature gonads increased. During the bloom, both C. glacialis and C. finmarchicus used the high food availability for egg production, while refueling or exhausting their lipid stores, respectively. Finally, during the post-bloom experiment, production was low by C. finmarchicus, whereas C. glacialis had terminated production. Our results suggest that a future warmer ocean will reduce the advantage of early spawning by C. glacialis and that C. finmarchicus will become increasingly prevalent.

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Cite this as

Kjellerup, Sanne, Dünweber, Michael, Swalethorp, Rasmus, Nielsen, Torkel Gissel, Møller, Eva Friis, Markager, Stiig, Hansen, Benni Winding (2012). Dataset: Biological traits, and egg and fecal pellet production of Calanus finmarchicus and Calanus glacialis in situ and during experiments. https://doi.org/10.1594/PANGAEA.811933

DOI retrieved: 2012

Additional Info

Field Value
Imported on November 29, 2024
Last update November 29, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.811933
Author Kjellerup, Sanne
Given Name Sanne
Family Name Kjellerup
More Authors
Dünweber, Michael
Swalethorp, Rasmus
Nielsen, Torkel Gissel
Møller, Eva Friis
Markager, Stiig
Hansen, Benni Winding
Source Creation 2012
Publication Year 2012
Resource Type application/zip - filename: Kjellerup_2012
Subject Areas
Name: Biosphere

Name: Ecology

Name: Oceans

Related Identifiers
Title: Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland
Identifier: https://doi.org/10.3354/meps09551
Type: DOI
Relation: IsSupplementTo
Year: 2012
Source: Marine Ecology Progress Series
Authors: Kjellerup Sanne , Dünweber Michael , Swalethorp Rasmus , Nielsen Torkel Gissel , Møller Eva Friis , Markager Stiig , Hansen Benni Winding .

Title: Succession and fate of the spring diatom bloom in Disko Bay, western Greenland
Identifier: https://doi.org/10.3354/meps08813
Type: DOI
Relation: References
Year: 2010
Source: Marine Ecology Progress Series
Authors: Dünweber Michael , Swalethorp Rasmus , Kjellerup Sanne , Nielsen Torkel Gissel , Arendt Kristine Engel , Hjorth Morten , Tönnesson Kajsa , Møller Eva Friis .