Exposure of black-necked grebes (Podiceps nigricollis) to metal pollution during the moulting period in the Odiel Marshes, Southwest Spain

Jaime Rodríguez-estival, Marta I. Sánchez, Cristina Ramo, Nico Varo, Juan A. Amat, Juan Garrido-fernández, Dámaso Hornero-méndez, Manuel E. Ortiz-santaliestra, Mark A. Taggart, Mónica Martinez-haro, Andy J. Green, Rafael Mateo

Research output: Contribution to journalArticle

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Abstract

European populations of black-necked grebes (Podiceps nigricollis) congregate every year to moult at the salt ponds of the Odiel Marshes (SW Spain). However, the Odiel Marshes are part of one of the most metal-polluted coastal estuaries in the world, which may pose risks to wildlife. We assessed the exposure of grebes to metal pollution during the critical moulting period in the Odiel Marshes and its potential to cause adverse health effects. Levels of metals in red blood pellet (as a biomarker of exposure), plasma carotenoids, eye redness, and body condition (as biomarkers of effects) were studied. Metal content was also analyzed in the brine shrimp Artemia parthenogenetica, the most important food for grebes in this hypersaline ecosystem during the moulting period. Results showed that, in comparison to toxicity thresholds, grebes had relatively high blood levels of arsenic (As), mercury (Hg) and zinc (Zn). The high loads found in Artemia and the way blood levels vary during the moulting period indicate that shrimp consumption may be the main route of metal exposure for grebes. Plasma carotenoids and body condition showed a positive association with exposure to As, while the relationship of lutein-like carotenoids with Hg accumulation was negative at the beginning of the moulting period to become positive afterwards. Moreover, eye redness was negatively affected by As accumulation. Factors including food resource availability, seasonal fluctuations in physiological status, and interannual variations in the degree of environmental contamination should be considered in monitoring efforts when using moult migrant waterbirds as sentinel species.
Original languageEnglish
Pages (from-to)774-784
JournalChemosphere
Volume216
Early online date24 Oct 2018
DOIs
Publication statusPublished - 1 Feb 2019

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Molting
Wetlands
Spain
marsh
Pollution
Artemia
Metals
Arsenic
pollution
Carotenoids
carotenoid
metal
arsenic
Blood
blood
body condition
Biomarkers
molt
biomarker
Plasmas

Cite this

Rodríguez-estival, J., Sánchez, M. I., Ramo, C., Varo, N., Amat, J. A., Garrido-fernández, J., ... Mateo, R. (2019). Exposure of black-necked grebes (Podiceps nigricollis) to metal pollution during the moulting period in the Odiel Marshes, Southwest Spain. Chemosphere, 216, 774-784. https://doi.org/10.1016/j.chemosphere.2018.10.145
Rodríguez-estival, Jaime ; Sánchez, Marta I. ; Ramo, Cristina ; Varo, Nico ; Amat, Juan A. ; Garrido-fernández, Juan ; Hornero-méndez, Dámaso ; Ortiz-santaliestra, Manuel E. ; Taggart, Mark A. ; Martinez-haro, Mónica ; Green, Andy J. ; Mateo, Rafael. / Exposure of black-necked grebes (Podiceps nigricollis) to metal pollution during the moulting period in the Odiel Marshes, Southwest Spain. In: Chemosphere. 2019 ; Vol. 216. pp. 774-784.
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abstract = "European populations of black-necked grebes (Podiceps nigricollis) congregate every year to moult at the salt ponds of the Odiel Marshes (SW Spain). However, the Odiel Marshes are part of one of the most metal-polluted coastal estuaries in the world, which may pose risks to wildlife. We assessed the exposure of grebes to metal pollution during the critical moulting period in the Odiel Marshes and its potential to cause adverse health effects. Levels of metals in red blood pellet (as a biomarker of exposure), plasma carotenoids, eye redness, and body condition (as biomarkers of effects) were studied. Metal content was also analyzed in the brine shrimp Artemia parthenogenetica, the most important food for grebes in this hypersaline ecosystem during the moulting period. Results showed that, in comparison to toxicity thresholds, grebes had relatively high blood levels of arsenic (As), mercury (Hg) and zinc (Zn). The high loads found in Artemia and the way blood levels vary during the moulting period indicate that shrimp consumption may be the main route of metal exposure for grebes. Plasma carotenoids and body condition showed a positive association with exposure to As, while the relationship of lutein-like carotenoids with Hg accumulation was negative at the beginning of the moulting period to become positive afterwards. Moreover, eye redness was negatively affected by As accumulation. Factors including food resource availability, seasonal fluctuations in physiological status, and interannual variations in the degree of environmental contamination should be considered in monitoring efforts when using moult migrant waterbirds as sentinel species.",
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Rodríguez-estival, J, Sánchez, MI, Ramo, C, Varo, N, Amat, JA, Garrido-fernández, J, Hornero-méndez, D, Ortiz-santaliestra, ME, Taggart, MA, Martinez-haro, M, Green, AJ & Mateo, R 2019, 'Exposure of black-necked grebes (Podiceps nigricollis) to metal pollution during the moulting period in the Odiel Marshes, Southwest Spain', Chemosphere, vol. 216, pp. 774-784. https://doi.org/10.1016/j.chemosphere.2018.10.145

Exposure of black-necked grebes (Podiceps nigricollis) to metal pollution during the moulting period in the Odiel Marshes, Southwest Spain. / Rodríguez-estival, Jaime; Sánchez, Marta I.; Ramo, Cristina; Varo, Nico; Amat, Juan A.; Garrido-fernández, Juan; Hornero-méndez, Dámaso; Ortiz-santaliestra, Manuel E.; Taggart, Mark A.; Martinez-haro, Mónica; Green, Andy J.; Mateo, Rafael.

In: Chemosphere, Vol. 216, 01.02.2019, p. 774-784.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Exposure of black-necked grebes (Podiceps nigricollis) to metal pollution during the moulting period in the Odiel Marshes, Southwest Spain

AU - Rodríguez-estival, Jaime

AU - Sánchez, Marta I.

AU - Ramo, Cristina

AU - Varo, Nico

AU - Amat, Juan A.

AU - Garrido-fernández, Juan

AU - Hornero-méndez, Dámaso

AU - Ortiz-santaliestra, Manuel E.

AU - Taggart, Mark A.

AU - Martinez-haro, Mónica

AU - Green, Andy J.

AU - Mateo, Rafael

PY - 2019/2/1

Y1 - 2019/2/1

N2 - European populations of black-necked grebes (Podiceps nigricollis) congregate every year to moult at the salt ponds of the Odiel Marshes (SW Spain). However, the Odiel Marshes are part of one of the most metal-polluted coastal estuaries in the world, which may pose risks to wildlife. We assessed the exposure of grebes to metal pollution during the critical moulting period in the Odiel Marshes and its potential to cause adverse health effects. Levels of metals in red blood pellet (as a biomarker of exposure), plasma carotenoids, eye redness, and body condition (as biomarkers of effects) were studied. Metal content was also analyzed in the brine shrimp Artemia parthenogenetica, the most important food for grebes in this hypersaline ecosystem during the moulting period. Results showed that, in comparison to toxicity thresholds, grebes had relatively high blood levels of arsenic (As), mercury (Hg) and zinc (Zn). The high loads found in Artemia and the way blood levels vary during the moulting period indicate that shrimp consumption may be the main route of metal exposure for grebes. Plasma carotenoids and body condition showed a positive association with exposure to As, while the relationship of lutein-like carotenoids with Hg accumulation was negative at the beginning of the moulting period to become positive afterwards. Moreover, eye redness was negatively affected by As accumulation. Factors including food resource availability, seasonal fluctuations in physiological status, and interannual variations in the degree of environmental contamination should be considered in monitoring efforts when using moult migrant waterbirds as sentinel species.

AB - European populations of black-necked grebes (Podiceps nigricollis) congregate every year to moult at the salt ponds of the Odiel Marshes (SW Spain). However, the Odiel Marshes are part of one of the most metal-polluted coastal estuaries in the world, which may pose risks to wildlife. We assessed the exposure of grebes to metal pollution during the critical moulting period in the Odiel Marshes and its potential to cause adverse health effects. Levels of metals in red blood pellet (as a biomarker of exposure), plasma carotenoids, eye redness, and body condition (as biomarkers of effects) were studied. Metal content was also analyzed in the brine shrimp Artemia parthenogenetica, the most important food for grebes in this hypersaline ecosystem during the moulting period. Results showed that, in comparison to toxicity thresholds, grebes had relatively high blood levels of arsenic (As), mercury (Hg) and zinc (Zn). The high loads found in Artemia and the way blood levels vary during the moulting period indicate that shrimp consumption may be the main route of metal exposure for grebes. Plasma carotenoids and body condition showed a positive association with exposure to As, while the relationship of lutein-like carotenoids with Hg accumulation was negative at the beginning of the moulting period to become positive afterwards. Moreover, eye redness was negatively affected by As accumulation. Factors including food resource availability, seasonal fluctuations in physiological status, and interannual variations in the degree of environmental contamination should be considered in monitoring efforts when using moult migrant waterbirds as sentinel species.

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