Extensive cross-disciplinary analysis of biological and chemical control of Calanus finmarchicus reproduction during an aldehyde forming diatom bloom in mesocosms

Sigrun Jonasdottir, Jörg Dutz, Marja Koski, L. Yebra, H.H. Jakobsen, C. Vidoudez, G. Pohnert, J.C. Nejstgaard

Research output: Contribution to journalJournal articleResearchpeer-review

412 Downloads (Pure)

Abstract

Egg and faecal pellet production and egg hatching success of the calanoid copepod Calanus finmarchicus were monitored over a period of 14 days (14-28 April, 2008) while fed water from 4 differently treated mesocosms and ambient water. Two of the mesocosms used were inoculated with the polyunsaturated aldehyde (PUA)-producing diatom Skeletonema marinoi, while 2 received only nutrient additions with or without silica. The mesocosms developed blooms of S. marinoi, mixed diatoms or the haptophyte Phaeocystis pouchetii, respectively. Faecal pellet production of C. finmarchicus increased with increasing food availability. Egg production increased with time in all mesocosms to a maximum single female production of 232 eggs female-1 day-1 (average of 90 eggs female-1 day-1) and followed the development of ciliates and P. pouchetii, but was not affected by the observed high (up to 15 nmol L-1) PUA production potential of the phytoplankton. The hatching success of the eggs produced on the mesocosm diets was high (78-96%) and was not affected by either aldehydes in the maternal diet or exposure to the dissolved aldehydes in the water
Original languageEnglish
JournalMarine Biology
Volume158
Issue number9
Pages (from-to)1943-1963
ISSN0025-3162
DOIs
Publication statusPublished - 2011

Fingerprint

Dive into the research topics of 'Extensive cross-disciplinary analysis of biological and chemical control of Calanus finmarchicus reproduction during an aldehyde forming diatom bloom in mesocosms'. Together they form a unique fingerprint.

Cite this