DDT Residues in Euphausiids in the Upper Estuary of the Gulf of St. Lawrence

• Published in: Journal of the Fisheries Research Board of Canada
• Main Authors: Sameoto, D. D., Darrow, D. C., Guildford, S.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1975
• Subjects: General Medicine; Meganyctiphanes norvegica
• Online Access: http://dx.doi.org/10.1139/f75-034; http://www.nrcresearchpress.com/doi/pdf/10.1139/f75-034

No significant variation was found in organochlorine residue levels between different stations in an area from the Saguenay River to the end of the Gaspé Peninsula in the Gulf of St. Lawrence for the euphausiids Thysanöessa raschii, T. inermis, and Meganyctiphanes norvegica. Significant differences were found between the concentration of organochlorine residues for M. norvegica and the Thysanöessa species, but there was no difference between the two Thysanöessa species.Significantly lower values for percent lipid were found in T. inermis and T. raschii between June 1973 and May 1974 samples, but the total amount of organochlorine residues did not change. This suggests that these species do not lose p,p′-DDT when they metabolize lipids for energy or the production of gonad material.