Publication Date:
2011-06-10
Description:
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. Content Type Journal Article Pages 1-21 DOI 10.1007/s00227-011-1705-8 Authors Sigrún H. Jónasdóttir, Technical University of Denmark, National Institute for Aquatic Resources, Kavalergaarden 6, 2920 Charlottenlund, Denmark Jörg Dutz, Technical University of Denmark, National Institute for Aquatic Resources, Kavalergaarden 6, 2920 Charlottenlund, Denmark Marja Koski, Technical University of Denmark, National Institute for Aquatic Resources, Kavalergaarden 6, 2920 Charlottenlund, Denmark Lidia Yebra, Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Apdo. 285, 29640 Fuengirola, Málaga, Spain Hans Henrik Jakobsen, National Environmental Research Institute, Aarhus University, Box. 358, Frederiksborgvej 399, 4000 Roskilde, Denmark Charles Vidoudez, Friedrich Schiller University, Bioorganic Analytics, Lessingstr. 8, 07743 Jena, Germany Georg Pohnert, Friedrich Schiller University, Bioorganic Analytics, Lessingstr. 8, 07743 Jena, Germany Jens C. Nejstgaard, Uni Research, Thormøhlensgate 49, 5006 Bergen, Norway Journal Marine Biology Online ISSN 1432-1793 Print ISSN 0025-3162
Print ISSN:
0025-3162
Electronic ISSN:
1432-1793
Topics:
Biology
