Trace elements, PCBs and organochlorine pesticides in New Zealand common dolphins (Delphinus sp.)

K A Stockin; R J Law; P J Duignan; G W Jones; L Porter; L Mirimin; L Meynier; Mark Orams

doi:10.1016/j.scitotenv.2007.05.016

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Trace elements, PCBs and organochlorine pesticides in New Zealand common dolphins (Delphinus sp.)

Journal article

Peer reviewed

Trace elements, PCBs and organochlorine pesticides in New Zealand common dolphins (Delphinus sp.)

K A Stockin, R J Law, P J Duignan, G W Jones, L Porter, L Mirimin, L Meynier and Mark Orams

Science of the Total Environment, Vol.387(1-3), pp.333-345

2007

DOI: https://doi.org/10.1016/j.scitotenv.2007.05.016

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Abstract

common dolphin

Delphinus sp.

trace elements

PCBs

organochlorine pesticides

DDT

mother-calf transmission

New Zealand

Trace elements, polychlorinated biphenyls (PCBs) and organochlorine (OC) pesticide levels were determined in tissues collected from stranded and bycaught common dolphins (Delphinus sp.) from New Zealand waters between 1999 and 2005. The concentrations of mercury (Hg), selenium (Se), chromium (Cr), zinc (Zn), nickel (Ni), cadmium (Cd), cobalt (Co), manganese (Mn), iron (Fe), copper (Cu), tin (Sn), lead (Pb), arsenic (As) and silver (Ag) were determined in blubber, liver and kidney tissue. PCBs (45 congeners) and a range of OC pesticides including dieldrin, hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethane (DDT) and its metabolites DDE and DDD were determined in blubber samples. Cr and Ni were not detected in any of the samples and concentrations of Co, Sn and Pb were generally low. Concentrations of Hg ranged from 0.17 to 110 mg/kg wet weight. Organochlorine pesticides dieldrin, HCB, o,pâ€²-DDT and p,pâ€²-DDE were present at the highest concentrations. Sum DDT concentrations in the blubber ranged from 17 to 337 and 654 to 4430 μg/kg wet weight in females and males, respectively. Similarly, Î£45CB concentrations ranged from 49 to 386 and 268 to 1634 μg/kg wet weight in females and males, respectively. The mean transmission of Î£DDTs and ICES7CBs between a genetically determined mother-offspring pair was calculated at 46% and 42%, respectively. Concentrations of organochlorine pesticides determined in the present study are within similar range to those reported for Hector's dolphins (Cephalorhyncus hectori) from inshore New Zealand waters.

Details

Title: Trace elements, PCBs and organochlorine pesticides in New Zealand common dolphins (Delphinus sp.)
Authors: K A Stockin (Author) - Massey University, New Zealand
R J Law (Author) - Cefas Burnham Laboratory, United Kingdom
P J Duignan (Author) - Massey University, New Zealand
G W Jones (Author) - Massey University, New Zealand
L Porter (Author) - AgriQuality Limited, New Zealand
L Mirimin (Author) - Massey University, New Zealand
L Meynier (Author) - Massey University, New Zealand
Mark Orams (Author) - Massey University, New Zealand
Publication details: Science of the Total Environment, Vol.387(1-3), pp.333-345
Publisher: Elsevier BV
Date published: 2007
DOI: 10.1016/j.scitotenv.2007.05.016
ISSN: 0048-9697; 0048-9697
Organisation Unit: University of the Sunshine Coast, Queensland; USC Business School - Legacy
Language: English
Record Identifier: 99451443402621
Output Type: Journal article

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