Inter-species differences in polychlorinated biphenyls patterns from five sympatric species of odontocetes

Can PCBs be used as tracers of feeding ecology?

Paula Mendez-Fernandez, Benoit Simon-Bouhet, Paco Bustamante, Tiphaine Chouvelon, Marisa Ferreira, Alfredo Lopez, Colin F. Moffat, Graham J. Pierce, Maria B. Santos, Jerome Spitz, Jose V. Vingada, Lynda Webster, Fiona L. Read, Angel F. González, Florence Caurant

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Abstract

Concentrations of thirty two polychlorinated biphenyls (PCBs) were determined in the blubber of five sympatric species of odontocetes stranded or by-caught along the Northwest coast of the Iberian Peninsula: common dolphin (Delphinus delphis), long-finned pilot whale (Globicephala melas), harbour porpoise (Phocoena phocoena), striped dolphin (Stenella coeruleoalba) and bottlenose dolphin (Tursiops truncatus). Multivariate analyses were applied to evaluate the ability of PCB patterns to discriminate these sympatric species and to determine which eco-biological factors influence these patterns, thus evaluating the relevance of PCB concentrations as biogeochemical tracers of feeding ecology. The five species could be separated according to their PCB patterns. Different exposure to these contaminants, a consequence of their different dietary preferences or habitats, together with potentially dissimilar metabolic capacities, likely explain these results; sex, age, habitat and the type of prey eaten were the most important eco-biological parameters of those tested. Although, no single congener has been specifically identified as a tracer of feeding ecology, 4 congeners from the 22 analysed seemed to be the most useful and around 12 congeners appear to be enough to achieve good discrimination of the cetaceans studied. Therefore, this study suggests that PCB patterns can be used as tracers for studying the feeding ecology, sources of contamination or even population structure of cetacean species from the Northwest Iberian Peninsula.
Original languageEnglish
Pages (from-to)98-108
Number of pages11
JournalEcological Indicators
Volume74
Early online date23 Nov 2016
DOIs
Publication statusPublished - Mar 2017

Fingerprint

feeding ecology
polychlorinated biphenyls
interspecific variation
sympatry
tracer techniques
PCB
tracer
ecology
dolphin
Phocoena phocoena
Tursiops truncatus
cetacean
dolphins
Iberian Peninsula
Stenella coeruleoalba
blubber
porpoise
habitat
bycatch
habitats

Keywords

  • persistent organic pollutants
  • biogeochemical tracers
  • multivariate analysis
  • cetaceans
  • Northwest Iberian Peninsula

Cite this

Inter-species differences in polychlorinated biphenyls patterns from five sympatric species of odontocetes : Can PCBs be used as tracers of feeding ecology? / Mendez-Fernandez, Paula; Simon-Bouhet, Benoit ; Bustamante, Paco; Chouvelon, Tiphaine; Ferreira, Marisa; Lopez, Alfredo; Moffat, Colin F.; Pierce, Graham J.; Santos, Maria B.; Spitz, Jerome; Vingada, Jose V.; Webster, Lynda; Read, Fiona L.; González, Angel F.; Caurant, Florence.

In: Ecological Indicators, Vol. 74, 03.2017, p. 98-108.

Research output: Contribution to journalArticle

Mendez-Fernandez, P, Simon-Bouhet, B, Bustamante, P, Chouvelon, T, Ferreira, M, Lopez, A, Moffat, CF, Pierce, GJ, Santos, MB, Spitz, J, Vingada, JV, Webster, L, Read, FL, González, AF & Caurant, F 2017, 'Inter-species differences in polychlorinated biphenyls patterns from five sympatric species of odontocetes: Can PCBs be used as tracers of feeding ecology?', Ecological Indicators, vol. 74, pp. 98-108. https://doi.org/10.1016/j.ecolind.2016.11.013
Mendez-Fernandez, Paula ; Simon-Bouhet, Benoit ; Bustamante, Paco ; Chouvelon, Tiphaine ; Ferreira, Marisa ; Lopez, Alfredo ; Moffat, Colin F. ; Pierce, Graham J. ; Santos, Maria B. ; Spitz, Jerome ; Vingada, Jose V. ; Webster, Lynda ; Read, Fiona L. ; González, Angel F. ; Caurant, Florence. / Inter-species differences in polychlorinated biphenyls patterns from five sympatric species of odontocetes : Can PCBs be used as tracers of feeding ecology?. In: Ecological Indicators. 2017 ; Vol. 74. pp. 98-108.
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abstract = "Concentrations of thirty two polychlorinated biphenyls (PCBs) were determined in the blubber of five sympatric species of odontocetes stranded or by-caught along the Northwest coast of the Iberian Peninsula: common dolphin (Delphinus delphis), long-finned pilot whale (Globicephala melas), harbour porpoise (Phocoena phocoena), striped dolphin (Stenella coeruleoalba) and bottlenose dolphin (Tursiops truncatus). Multivariate analyses were applied to evaluate the ability of PCB patterns to discriminate these sympatric species and to determine which eco-biological factors influence these patterns, thus evaluating the relevance of PCB concentrations as biogeochemical tracers of feeding ecology. The five species could be separated according to their PCB patterns. Different exposure to these contaminants, a consequence of their different dietary preferences or habitats, together with potentially dissimilar metabolic capacities, likely explain these results; sex, age, habitat and the type of prey eaten were the most important eco-biological parameters of those tested. Although, no single congener has been specifically identified as a tracer of feeding ecology, 4 congeners from the 22 analysed seemed to be the most useful and around 12 congeners appear to be enough to achieve good discrimination of the cetaceans studied. Therefore, this study suggests that PCB patterns can be used as tracers for studying the feeding ecology, sources of contamination or even population structure of cetacean species from the Northwest Iberian Peninsula.",
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author = "Paula Mendez-Fernandez and Benoit Simon-Bouhet and Paco Bustamante and Tiphaine Chouvelon and Marisa Ferreira and Alfredo Lopez and Moffat, {Colin F.} and Pierce, {Graham J.} and Santos, {Maria B.} and Jerome Spitz and Vingada, {Jose V.} and Lynda Webster and Read, {Fiona L.} and Gonz{\'a}lez, {Angel F.} and Florence Caurant",
note = "The authors gratefully acknowledge the assistance of volunteers from the Galician (CEMMA) and Portuguese (SPVS) stranding networks. The authors would like to thank R. Gallois and C. Trichet for their participation on total lipid content analysis. P. M{\'e}ndez-Fernandez was supported during the research period through a PhD grant from the Funda{\cc}{\~a}o do Minist{\'e}rio de Ci{\^e}ncia e Tecnologia de Portugal and ANIMATE project (SFRH/BD/36766/2007) and through a Science Without Borders (CSF) young talent postdoctoral grant of the Brazilian government. G. J. Pierce acknowledges support from the EU ANIMATE project (MEXC-CT-2006-042337), University of Aveiro and Caixa Geral de Dep{\'o}sitos (Portugal).",
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T1 - Inter-species differences in polychlorinated biphenyls patterns from five sympatric species of odontocetes

T2 - Can PCBs be used as tracers of feeding ecology?

AU - Mendez-Fernandez, Paula

AU - Simon-Bouhet, Benoit

AU - Bustamante, Paco

AU - Chouvelon, Tiphaine

AU - Ferreira, Marisa

AU - Lopez, Alfredo

AU - Moffat, Colin F.

AU - Pierce, Graham J.

AU - Santos, Maria B.

AU - Spitz, Jerome

AU - Vingada, Jose V.

AU - Webster, Lynda

AU - Read, Fiona L.

AU - González, Angel F.

AU - Caurant, Florence

N1 - The authors gratefully acknowledge the assistance of volunteers from the Galician (CEMMA) and Portuguese (SPVS) stranding networks. The authors would like to thank R. Gallois and C. Trichet for their participation on total lipid content analysis. P. Méndez-Fernandez was supported during the research period through a PhD grant from the Fundação do Ministério de Ciência e Tecnologia de Portugal and ANIMATE project (SFRH/BD/36766/2007) and through a Science Without Borders (CSF) young talent postdoctoral grant of the Brazilian government. G. J. Pierce acknowledges support from the EU ANIMATE project (MEXC-CT-2006-042337), University of Aveiro and Caixa Geral de Depósitos (Portugal).

PY - 2017/3

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N2 - Concentrations of thirty two polychlorinated biphenyls (PCBs) were determined in the blubber of five sympatric species of odontocetes stranded or by-caught along the Northwest coast of the Iberian Peninsula: common dolphin (Delphinus delphis), long-finned pilot whale (Globicephala melas), harbour porpoise (Phocoena phocoena), striped dolphin (Stenella coeruleoalba) and bottlenose dolphin (Tursiops truncatus). Multivariate analyses were applied to evaluate the ability of PCB patterns to discriminate these sympatric species and to determine which eco-biological factors influence these patterns, thus evaluating the relevance of PCB concentrations as biogeochemical tracers of feeding ecology. The five species could be separated according to their PCB patterns. Different exposure to these contaminants, a consequence of their different dietary preferences or habitats, together with potentially dissimilar metabolic capacities, likely explain these results; sex, age, habitat and the type of prey eaten were the most important eco-biological parameters of those tested. Although, no single congener has been specifically identified as a tracer of feeding ecology, 4 congeners from the 22 analysed seemed to be the most useful and around 12 congeners appear to be enough to achieve good discrimination of the cetaceans studied. Therefore, this study suggests that PCB patterns can be used as tracers for studying the feeding ecology, sources of contamination or even population structure of cetacean species from the Northwest Iberian Peninsula.

AB - Concentrations of thirty two polychlorinated biphenyls (PCBs) were determined in the blubber of five sympatric species of odontocetes stranded or by-caught along the Northwest coast of the Iberian Peninsula: common dolphin (Delphinus delphis), long-finned pilot whale (Globicephala melas), harbour porpoise (Phocoena phocoena), striped dolphin (Stenella coeruleoalba) and bottlenose dolphin (Tursiops truncatus). Multivariate analyses were applied to evaluate the ability of PCB patterns to discriminate these sympatric species and to determine which eco-biological factors influence these patterns, thus evaluating the relevance of PCB concentrations as biogeochemical tracers of feeding ecology. The five species could be separated according to their PCB patterns. Different exposure to these contaminants, a consequence of their different dietary preferences or habitats, together with potentially dissimilar metabolic capacities, likely explain these results; sex, age, habitat and the type of prey eaten were the most important eco-biological parameters of those tested. Although, no single congener has been specifically identified as a tracer of feeding ecology, 4 congeners from the 22 analysed seemed to be the most useful and around 12 congeners appear to be enough to achieve good discrimination of the cetaceans studied. Therefore, this study suggests that PCB patterns can be used as tracers for studying the feeding ecology, sources of contamination or even population structure of cetacean species from the Northwest Iberian Peninsula.

KW - persistent organic pollutants

KW - biogeochemical tracers

KW - multivariate analysis

KW - cetaceans

KW - Northwest Iberian Peninsula

U2 - 10.1016/j.ecolind.2016.11.013

DO - 10.1016/j.ecolind.2016.11.013

M3 - Article

VL - 74

SP - 98

EP - 108

JO - Ecological Indicators

JF - Ecological Indicators

SN - 1470-160X

ER -