Exposure to persistent organic pollutants and first-year survival probability in gray seal pups
Many studies have demonstrated that persistent organic pollutants are transferred from mother to pup during lactation in phocid seals, but none have been able to determine the significance of these findings for survivorship. The aim of this study was to investigate the relationship between blubber c...
Published in: | Environmental Science & Technology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2009
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/exposure-to-persistent-organic-pollutants-and-firstyear-survival-probability-in-gray-seal-pups(3bf22ffb-b778-478a-be6e-98fa49d9a946).html https://doi.org/10.1021/es9004398 http://www.scopus.com/inward/record.url?scp=68849119289&partnerID=8YFLogxK http://pubs.acs.org/doi/pdf/10.1021/es9004398 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/3bf22ffb-b778-478a-be6e-98fa49d9a946 2024-06-23T07:56:11+00:00 Exposure to persistent organic pollutants and first-year survival probability in gray seal pups Hall, Ailsa Jane Thomas, Gareth McConnell, Bernie J 2009-08-15 https://research-portal.st-andrews.ac.uk/en/researchoutput/exposure-to-persistent-organic-pollutants-and-firstyear-survival-probability-in-gray-seal-pups(3bf22ffb-b778-478a-be6e-98fa49d9a946).html https://doi.org/10.1021/es9004398 http://www.scopus.com/inward/record.url?scp=68849119289&partnerID=8YFLogxK http://pubs.acs.org/doi/pdf/10.1021/es9004398 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/exposure-to-persistent-organic-pollutants-and-firstyear-survival-probability-in-gray-seal-pups(3bf22ffb-b778-478a-be6e-98fa49d9a946).html info:eu-repo/semantics/restrictedAccess Hall , A J , Thomas , G & McConnell , B J 2009 , ' Exposure to persistent organic pollutants and first-year survival probability in gray seal pups ' , Environmental Science and Technology , vol. 43 , no. 16 , pp. 6364-6369 . https://doi.org/10.1021/es9004398 POLYBROMINATED DIPHENYL ETHERS LOW-DOSE BDE-47 GREY SEALS HALICHOERUS-GRYPUS THYROID-HORMONE ENDOCRINE DISRUPTERS GENE-EXPRESSION MODEL SELECTION MARKED ANIMALS PHOCA-VITULINA article 2009 ftunstandrewcris https://doi.org/10.1021/es9004398 2024-06-13T00:22:24Z Many studies have demonstrated that persistent organic pollutants are transferred from mother to pup during lactation in phocid seals, but none have been able to determine the significance of these findings for survivorship. The aim of this study was to investigate the relationship between blubber contaminant concentrations and first-year survival in gray seal pups. A mark-recapture framework was used to estimate survival probabilities and animals were “marked” using novel mobile phone tags. Individual and group covariates (sex, condition, and blubber contaminants) were embedded within a live-resighting model. The most significant covariates remained condition at weaning and sex (males in poor condition had the lowest survival probability), as was found previously, but there was also evidence indicating that higher blubber contaminants additionally decreased survivorship. The models’ Akaike’s Information Criteria (AICs) and their associated weights, point toward the tetrapolybrominated diphenyl ether congeners (dominated by BDE-47) as being the most important group of contaminants affecting survival probability, followed by the total dichlorodiphenyltrichloroethanes (DDTs) and pentapolychlorinated biphenyl congeners. These compounds were not the most abundant in the blubber, suggesting further studies into their toxicological effects in this species are necessary. The specific mechanisms driving the reduction in survivorship remain unknown. Article in Journal/Newspaper Phoca vitulina University of St Andrews: Research Portal Environmental Science & Technology 43 16 6364 6369 |
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Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
POLYBROMINATED DIPHENYL ETHERS LOW-DOSE BDE-47 GREY SEALS HALICHOERUS-GRYPUS THYROID-HORMONE ENDOCRINE DISRUPTERS GENE-EXPRESSION MODEL SELECTION MARKED ANIMALS PHOCA-VITULINA |
spellingShingle |
POLYBROMINATED DIPHENYL ETHERS LOW-DOSE BDE-47 GREY SEALS HALICHOERUS-GRYPUS THYROID-HORMONE ENDOCRINE DISRUPTERS GENE-EXPRESSION MODEL SELECTION MARKED ANIMALS PHOCA-VITULINA Hall, Ailsa Jane Thomas, Gareth McConnell, Bernie J Exposure to persistent organic pollutants and first-year survival probability in gray seal pups |
topic_facet |
POLYBROMINATED DIPHENYL ETHERS LOW-DOSE BDE-47 GREY SEALS HALICHOERUS-GRYPUS THYROID-HORMONE ENDOCRINE DISRUPTERS GENE-EXPRESSION MODEL SELECTION MARKED ANIMALS PHOCA-VITULINA |
description |
Many studies have demonstrated that persistent organic pollutants are transferred from mother to pup during lactation in phocid seals, but none have been able to determine the significance of these findings for survivorship. The aim of this study was to investigate the relationship between blubber contaminant concentrations and first-year survival in gray seal pups. A mark-recapture framework was used to estimate survival probabilities and animals were “marked” using novel mobile phone tags. Individual and group covariates (sex, condition, and blubber contaminants) were embedded within a live-resighting model. The most significant covariates remained condition at weaning and sex (males in poor condition had the lowest survival probability), as was found previously, but there was also evidence indicating that higher blubber contaminants additionally decreased survivorship. The models’ Akaike’s Information Criteria (AICs) and their associated weights, point toward the tetrapolybrominated diphenyl ether congeners (dominated by BDE-47) as being the most important group of contaminants affecting survival probability, followed by the total dichlorodiphenyltrichloroethanes (DDTs) and pentapolychlorinated biphenyl congeners. These compounds were not the most abundant in the blubber, suggesting further studies into their toxicological effects in this species are necessary. The specific mechanisms driving the reduction in survivorship remain unknown. |
format |
Article in Journal/Newspaper |
author |
Hall, Ailsa Jane Thomas, Gareth McConnell, Bernie J |
author_facet |
Hall, Ailsa Jane Thomas, Gareth McConnell, Bernie J |
author_sort |
Hall, Ailsa Jane |
title |
Exposure to persistent organic pollutants and first-year survival probability in gray seal pups |
title_short |
Exposure to persistent organic pollutants and first-year survival probability in gray seal pups |
title_full |
Exposure to persistent organic pollutants and first-year survival probability in gray seal pups |
title_fullStr |
Exposure to persistent organic pollutants and first-year survival probability in gray seal pups |
title_full_unstemmed |
Exposure to persistent organic pollutants and first-year survival probability in gray seal pups |
title_sort |
exposure to persistent organic pollutants and first-year survival probability in gray seal pups |
publishDate |
2009 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/exposure-to-persistent-organic-pollutants-and-firstyear-survival-probability-in-gray-seal-pups(3bf22ffb-b778-478a-be6e-98fa49d9a946).html https://doi.org/10.1021/es9004398 http://www.scopus.com/inward/record.url?scp=68849119289&partnerID=8YFLogxK http://pubs.acs.org/doi/pdf/10.1021/es9004398 |
genre |
Phoca vitulina |
genre_facet |
Phoca vitulina |
op_source |
Hall , A J , Thomas , G & McConnell , B J 2009 , ' Exposure to persistent organic pollutants and first-year survival probability in gray seal pups ' , Environmental Science and Technology , vol. 43 , no. 16 , pp. 6364-6369 . https://doi.org/10.1021/es9004398 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/exposure-to-persistent-organic-pollutants-and-firstyear-survival-probability-in-gray-seal-pups(3bf22ffb-b778-478a-be6e-98fa49d9a946).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1021/es9004398 |
container_title |
Environmental Science & Technology |
container_volume |
43 |
container_issue |
16 |
container_start_page |
6364 |
op_container_end_page |
6369 |
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1802649112377556992 |