Mercury bioacumulation in four tissues of Podocnemis erythrocephala (Podocnemididae: Testudines) as a function of water parameters
A number of environmental factors influence the dynamics of Hg in aquatic ecosystems, yet few studies have examined these factors for turtles, especially from South America. Red-headed river turtle (Podocnemis erythrocephala) is easy to capture in the black waters of Rio Negro, making it the turtle...
| Autor principal: | Schneider, Larissa |
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| Outros Autores: | Belger, Lauren, Burger, Joanna, Vogt, Richard Carl |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Science of the Total Environment
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18469 |
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oai:repositorio:1-18469 |
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oai:repositorio:1-18469 Mercury bioacumulation in four tissues of Podocnemis erythrocephala (Podocnemididae: Testudines) as a function of water parameters Schneider, Larissa Belger, Lauren Burger, Joanna Vogt, Richard Carl Alkylation Biochemistry Blood Catchments Diffusers (optical) Dissolution Ecology Fire Hazards Liver Mercury (metal) Methylation Ocean Habitats Organic Carbon Radar Imaging Regression Analysis Risk Perception Soils Tracking Radar Water Analysis Amazon Mercury Physical Factors Podocnemis Rio Negro Size Turtles Muscle Biological Marker Mercury Organic Carbon Water Bioaccumulation Bioindicator Blood Body Size Chemical Analysis Dissolved Organic Carbon Environmental Factor Gis Health Risk Mercury (element) Methylation Multiple Regression Muscle Ph Radar Imagery Turtle Animals Tissue Aquatic Environment Bioaccumulation Blood Chemical Analysis Environmental Factor Floodplain Forest Habitat Limnology Liver Multiple Regression Muscle Nonhuman Ph Podocnemis Erythrocephala Priority Journal Risk Soil Turtle Animal Body Size Brasil Ecosystem Environmental Monitoring Fresh Water Geography Health Status Humans Liver Mercury Muscle, Skeletal Turtles Podocnemididae Podocnemis Podocnemis Erythrocephala Testudines A number of environmental factors influence the dynamics of Hg in aquatic ecosystems, yet few studies have examined these factors for turtles, especially from South America. Red-headed river turtle (Podocnemis erythrocephala) is easy to capture in the black waters of Rio Negro, making it the turtle species that is consumed most often by people of the region. In this study, environmental factors and turtle size were investigated to determine their influence on the Hg concentration in blood, muscle, liver and carapace of the red-headed river turtle. Factors investigated included turtle length, pH, dissolved organic carbon and availability of potential methylation sites (floodplain forests and hydromorphic soils). The study was conducted in the Rio Negro basin, where we collected water and turtle blood, muscle, liver and carapace samples from 12 tributaries for chemical analysis. Through radar imagery and existing soil maps with GIS, the percentage of alluvial floodplains and hydromorphic soils (potential methylation sites) was estimated for each drainage basin at sampling points. The mean Hg concentration in blood of P. erythrocephala was 1.64 ng g- 1 (SD = 1.36), muscle 33 ng g- 1 (SD = 11), liver 470 ng g- 1 (SD = 313) and carapace 68 ng g- 1 (SD = 32). Sex or length did not influence the Hg concentration in P. erythrocephala blood, muscle and liver, but Hg increased in carapace tissue when length size increased (ANCOVA p = 0.007). In the multiple regression analysis, none of the environmental factors studied had a significant relation with blood, muscle, liver and carapace. P. erythrocephala moves among habitats and in the open and interconnected aquatic systems of the Amazon basin, characterized by high levels of limnological variability, a good bioindicator of Hg concentration needs to be relatively sedentary to represent a specific habitat. However, the levels of Hg in liver were sufficient to pose a potential risk to humans that consume them, suggesting the usefulness of P. erythrocephala as a bioindicator. © 2008 Elsevier B.V. 2020-06-15T21:55:27Z 2020-06-15T21:55:27Z 2009 Artigo https://repositorio.inpa.gov.br/handle/1/18469 10.1016/j.scitotenv.2008.09.049 en Volume 407, Número 3, Pags. 1048-1054 Restrito Science of the Total Environment |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Alkylation Biochemistry Blood Catchments Diffusers (optical) Dissolution Ecology Fire Hazards Liver Mercury (metal) Methylation Ocean Habitats Organic Carbon Radar Imaging Regression Analysis Risk Perception Soils Tracking Radar Water Analysis Amazon Mercury Physical Factors Podocnemis Rio Negro Size Turtles Muscle Biological Marker Mercury Organic Carbon Water Bioaccumulation Bioindicator Blood Body Size Chemical Analysis Dissolved Organic Carbon Environmental Factor Gis Health Risk Mercury (element) Methylation Multiple Regression Muscle Ph Radar Imagery Turtle Animals Tissue Aquatic Environment Bioaccumulation Blood Chemical Analysis Environmental Factor Floodplain Forest Habitat Limnology Liver Multiple Regression Muscle Nonhuman Ph Podocnemis Erythrocephala Priority Journal Risk Soil Turtle Animal Body Size Brasil Ecosystem Environmental Monitoring Fresh Water Geography Health Status Humans Liver Mercury Muscle, Skeletal Turtles Podocnemididae Podocnemis Podocnemis Erythrocephala Testudines |
| spellingShingle |
Alkylation Biochemistry Blood Catchments Diffusers (optical) Dissolution Ecology Fire Hazards Liver Mercury (metal) Methylation Ocean Habitats Organic Carbon Radar Imaging Regression Analysis Risk Perception Soils Tracking Radar Water Analysis Amazon Mercury Physical Factors Podocnemis Rio Negro Size Turtles Muscle Biological Marker Mercury Organic Carbon Water Bioaccumulation Bioindicator Blood Body Size Chemical Analysis Dissolved Organic Carbon Environmental Factor Gis Health Risk Mercury (element) Methylation Multiple Regression Muscle Ph Radar Imagery Turtle Animals Tissue Aquatic Environment Bioaccumulation Blood Chemical Analysis Environmental Factor Floodplain Forest Habitat Limnology Liver Multiple Regression Muscle Nonhuman Ph Podocnemis Erythrocephala Priority Journal Risk Soil Turtle Animal Body Size Brasil Ecosystem Environmental Monitoring Fresh Water Geography Health Status Humans Liver Mercury Muscle, Skeletal Turtles Podocnemididae Podocnemis Podocnemis Erythrocephala Testudines Schneider, Larissa Mercury bioacumulation in four tissues of Podocnemis erythrocephala (Podocnemididae: Testudines) as a function of water parameters |
| topic_facet |
Alkylation Biochemistry Blood Catchments Diffusers (optical) Dissolution Ecology Fire Hazards Liver Mercury (metal) Methylation Ocean Habitats Organic Carbon Radar Imaging Regression Analysis Risk Perception Soils Tracking Radar Water Analysis Amazon Mercury Physical Factors Podocnemis Rio Negro Size Turtles Muscle Biological Marker Mercury Organic Carbon Water Bioaccumulation Bioindicator Blood Body Size Chemical Analysis Dissolved Organic Carbon Environmental Factor Gis Health Risk Mercury (element) Methylation Multiple Regression Muscle Ph Radar Imagery Turtle Animals Tissue Aquatic Environment Bioaccumulation Blood Chemical Analysis Environmental Factor Floodplain Forest Habitat Limnology Liver Multiple Regression Muscle Nonhuman Ph Podocnemis Erythrocephala Priority Journal Risk Soil Turtle Animal Body Size Brasil Ecosystem Environmental Monitoring Fresh Water Geography Health Status Humans Liver Mercury Muscle, Skeletal Turtles Podocnemididae Podocnemis Podocnemis Erythrocephala Testudines |
| description |
A number of environmental factors influence the dynamics of Hg in aquatic ecosystems, yet few studies have examined these factors for turtles, especially from South America. Red-headed river turtle (Podocnemis erythrocephala) is easy to capture in the black waters of Rio Negro, making it the turtle species that is consumed most often by people of the region. In this study, environmental factors and turtle size were investigated to determine their influence on the Hg concentration in blood, muscle, liver and carapace of the red-headed river turtle. Factors investigated included turtle length, pH, dissolved organic carbon and availability of potential methylation sites (floodplain forests and hydromorphic soils). The study was conducted in the Rio Negro basin, where we collected water and turtle blood, muscle, liver and carapace samples from 12 tributaries for chemical analysis. Through radar imagery and existing soil maps with GIS, the percentage of alluvial floodplains and hydromorphic soils (potential methylation sites) was estimated for each drainage basin at sampling points. The mean Hg concentration in blood of P. erythrocephala was 1.64 ng g- 1 (SD = 1.36), muscle 33 ng g- 1 (SD = 11), liver 470 ng g- 1 (SD = 313) and carapace 68 ng g- 1 (SD = 32). Sex or length did not influence the Hg concentration in P. erythrocephala blood, muscle and liver, but Hg increased in carapace tissue when length size increased (ANCOVA p = 0.007). In the multiple regression analysis, none of the environmental factors studied had a significant relation with blood, muscle, liver and carapace. P. erythrocephala moves among habitats and in the open and interconnected aquatic systems of the Amazon basin, characterized by high levels of limnological variability, a good bioindicator of Hg concentration needs to be relatively sedentary to represent a specific habitat. However, the levels of Hg in liver were sufficient to pose a potential risk to humans that consume them, suggesting the usefulness of P. erythrocephala as a bioindicator. © 2008 Elsevier B.V. |
| format |
Artigo |
| author |
Schneider, Larissa |
| author2 |
Belger, Lauren Burger, Joanna Vogt, Richard Carl |
| author2Str |
Belger, Lauren Burger, Joanna Vogt, Richard Carl |
| title |
Mercury bioacumulation in four tissues of Podocnemis erythrocephala (Podocnemididae: Testudines) as a function of water parameters |
| title_short |
Mercury bioacumulation in four tissues of Podocnemis erythrocephala (Podocnemididae: Testudines) as a function of water parameters |
| title_full |
Mercury bioacumulation in four tissues of Podocnemis erythrocephala (Podocnemididae: Testudines) as a function of water parameters |
| title_fullStr |
Mercury bioacumulation in four tissues of Podocnemis erythrocephala (Podocnemididae: Testudines) as a function of water parameters |
| title_full_unstemmed |
Mercury bioacumulation in four tissues of Podocnemis erythrocephala (Podocnemididae: Testudines) as a function of water parameters |
| title_sort |
mercury bioacumulation in four tissues of podocnemis erythrocephala (podocnemididae: testudines) as a function of water parameters |
| publisher |
Science of the Total Environment |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18469 |
| _version_ |
1787143193762988032 |
| score |
11.755432 |