Data from: Assessing stable isotope dynamics of diapausing Calanus finmarchicus and C. hyperboreus during the overwintering period: a laboratory experiment ...

• Main Authors: Perrin, G., Dibacco, C., Plourde, S., Winkler, G.
• Format: Dataset
• Language: English
• Published: Dryad 2014
• Subjects: Lipids; 24 September 2009; Calanus finmarchicus; mass balance correction model; Calanus hyperboreus; Canada; Subarctic; Copepods
• Online Access: https://dx.doi.org/10.5061/dryad.vb5pj; https://datadryad.org/stash/dataset/doi:10.5061/dryad.vb5pj

This study aimed at describing changes in the stable isotopic composition of late copepodite stage V (CV) subarctic marine copepods (Calanus finmarchicus and C. hyperboreus) during overwintering non-feeding periods. Diapausing stage CVs sampled in deep waters of the Lower St. Lawrence Estuary (Québec, Canada) in late-September 2009 were monitored for 4 months under controlled laboratory conditions. CVs and newly moulted adults were analyzed for δ13C and δ15N signatures as well as lipid, carbon and nitrogen content. Lipids were extracted in half of the samples to compare δ13C of individuals with and without lipids and to evaluate the accuracy of mass balance correction models for δ13C under lipid influence. Lipid content generally decreased with time for both species, which was reflected in an increase of δ13C values of CVs but a constant δ13C in newly moulted adults. Accordingly, lipid extraction resulted in an increase of δ13C in CVs and adults. The mean δ13C signature of lipid-extracted individuals ... : Stable isotopes dynamics of diapausing Calanus spp.. A Canadian Healthy Oceans Network Population Connectivity project, PC-08These data were collected at a fixed station near Rimouski located in the middle of the Laurentian Channel (340 m) of the St. Lawrence Estuary (Québec, Canada). Deep-dwelling zooplankton (100–320 m) were collected with a vertical plankton tow using a 0.75-m diameter plankton net, 202-mm Nitex net equipped with an opening-closing device. Diapausin stages CVs were monitored for 4 months under controlled laboratory conditions. CVs and newly moulted adults were analyzed for d13C and d15N signatures as well as lipid, carbon and nitrogen content. Lipids were extracted in half of the samples to compare d13C of individuals with and without lipids and to evaluate the accuracy of mass balance correction models for d13C under lipid influence.This study was the first part of a MSc project aiming at using stable isotope signatures as markers of origins for Calanus spp. in a Marine Protected Area, ...