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Naupliar development times and survival of the copepods Calanus helgolandicus and Calanus finmarchicus in relation to food and temperature

Cook, K.B.; Bunker, A.; Hay, S.; Hirst, Andrew G.; Speirs, D.C.. 2007 Naupliar development times and survival of the copepods Calanus helgolandicus and Calanus finmarchicus in relation to food and temperature. Journal of Plankton Research, 29 (9). 757-767. 10.1093/plankt/fbm056

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Abstract/Summary

We measured egg hatching tunes and stage specific naupliar development tinges of the key calanoid copepods Calanus helgolandicus and C. finmarchicus in response to temperature, food quantity and food type. Calanus helgolandicus development times decreased with increasing temperature and when fed Isochrysis galbana (4.4 mu m ESD) rather than Prorocentrum micans (29.5 mu m ESD). Nauplii needed higher food carbon concentration to develop past the fast feeding stage (N3) when fed 1. galbana compared with P micans. At low food carbon concentrations nauplii developed more slowly past N3 than at more saturated levels. The survival of nauplii fed P. micans increased with temperature, but starved nauplii survival decreased at higher temperatures. We parameterized a temperature-dependent model of development for both species which fitted the observed stage durations under non-limiting food extremely well and demonstrated that C. finmarchicus develops faster than C. helgolandicus. Further data are needed to clarify the effect of food-temperature interactions on development rates.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1093/plankt/fbm056
Programmes: BAS Programmes > Global Science in the Antarctic Context (2005-2009) > DISCOVERY 2010 - Integrating Southern Ocean Ecosystems into the Earth System
ISSN: 0142-7873
NORA Subject Terms: Marine Sciences
Biology and Microbiology
Date made live: 22 Feb 2011 10:48
URI: http://nora.nerc.ac.uk/id/eprint/13576

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