Interseasonal variation in blood concentrations of organochlorines in great black-backed gulls (Larus marinus)
Environmental Toxicology and Chemistry, ISSN: 0730-7268, Vol: 24, Issue: 7, Page: 1801-1806
2005
- 30Citations
- 28Captures
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Metrics Details
- Citations30
- Citation Indexes30
- 30
- CrossRef28
- Captures28
- Readers28
- 28
Article Description
In two subsequent breeding seasons (2001 and 2002), we measured 12 organochlorines (OCs), including hexachlorobenzene (HCB), β- hexachlorocyclohexane (β-HCH), p,p′-dichlorodiphenyldichloroethylene (DDE), oxychlordane, and eight polychlorinated biphenyl congeners (PCBs), in the blood of the same 25 great black-backed gulls (Larus marinus). The wet-weight concentrations of different OCs in the blood decreased between 45 and 60% from 2001 to 2002. The main reasons for this were lower blood-lipid concentrations and higher body condition in 2002 compared to 2001. The differences in blood lipids and body condition probably resulted from changes in the availability of different prey types between the years. Despite the variation in the blood concentrations of OCs, there was a high predictability of the relative relationship among individuals between the years, especially for the most-persistent compounds (persistent PCBs, oxychlordane, and DDE); that is, individuals with high levels in 2001 still had relatively high levels compared to other individuals in 2002. This suggests that a concentration obtained from a single blood sample is a relatively reliable measurement of OC burdens for individual great black-backed gulls compared to other individuals, independent of changes in mean OC levels within the population. However, by including information about the nutritional status of individuals, more precise interference from samples in different years and locations may be made. Moreover, the great seasonal variation in OC levels within individuals may have implications for how OC monitoring should be conducted in gull populations. © 2005 SETAC.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=21444435577&origin=inward; http://dx.doi.org/10.1897/04-203r.1; http://www.ncbi.nlm.nih.gov/pubmed/16050599; https://academic.oup.com/etc/article/24/7/1801/7770471; http://doi.wiley.com/10.1897/04-203R.1; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1897%2F04-203R.1; https://dx.doi.org/10.1897/04-203r.1; https://setac.onlinelibrary.wiley.com/doi/abs/10.1897/04-203R.1
Oxford University Press (OUP)
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