Journal article
The effect of Pseudo-nitzschia seriata on grazing and fecundity of Calanus finmarchicus and Calanus glacialis
National Institute of Aquatic Resources, Technical University of Denmark1
Section for Ecosystem based Marine Management, National Institute of Aquatic Resources, Technical University of Denmark2
University of Copenhagen3
Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research4
Section for Marine Ecology and Oceanography, National Institute of Aquatic Resources, Technical University of Denmark5
This study investigates whether feeding on the domoic acid (DA)-producing diatom Pseudo-nitzschia seriata affects the faecal pellet (FP) production (proxy for grazing) and fecundity of Calanus finmarchicus and Calanus glacialis. Female copepods were fed a saturating concentration of food (400 mg C L21) in two combinations (i) natural phytoplankton spiked with 50% P. seriata and (ii) only the non-toxic phytoplankton community.
The copepods ingested DA, as illustrated by DA accumulation in their FPs, and transferred a share of DA to their eggs and body tissue. DA was mainly excreted through FPs in both species. Compared with C. finmarchicus, C. glacialis accumulated substantially more DA in its body tissue. For both species, egg production and hatching success were unaffected by grazing on the toxic diatom.
This suggests that feeding on DA-containing P. seriata does not affect copepod fecundity, despite increasing DA concentrations of P. seriata during the experiment
| Language: | English |
|---|---|
| Publisher: | Oxford University Press |
| Year: | 2016 |
| Pages: | 564-574 |
| ISSN: | 14643774 and 01427873 |
| Types: | Journal article |
| DOI: | 10.1093/plankt/fbw015 |
| ORCIDs: | Miesner, Anna Katharina , Nielsen, Torkel Gissel and 0000-0002-2035-1997 |
