Heavy Metal Contamination in Phrynops geoffroanus (Schweigger, 1812) (Testudines: Chelidae) in a River Basin, Sao Paulo, Brazil

C Pina, V Lance, I Guardia, T Marques, L Verdade

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The Piracicaba River basin is considered the most disturbed river basin in the state of Sao Paulo. Considerable amounts of agricultural residues are seasonally drained into the river, and the region is also highly urbanized and industrialized with an incipient sewage treatment system. The presence of heavy metals has been previously reported for the water and riverbed in Piracicaba river basin. In this study we evaluated 13 heavy metals in the blood of 37 Geoffroyâ¿¿s side-necked turtles, Phrynops geoffroanus, from Piracicaba River and Piracicamirim Creek, one of its tributaries. Blood levels of As, Co, Cr, Se and Pb varied among sites, whereas Sn varied between males and females. However, no obvious pathology was detected. Serum level of Cu (2,194 ng g-1) and Pb (1,150 ng g-1) found in this study are the highest ever described for any reptile; however, no clinical symptoms have been detected in the present study. There is no information about the time scale of such contamination, which could be currently subclinical and yet lead to a breakdown in the population reproductive success in a few years. Based on the present study, legal enforcement is urged in order to locate and extirpate heavy metal sources in the Piracicaba River basin. In addition, monitoring should include humans and commercial fish consumed in local markets.
Original languageEnglish
Pages (from-to)771-775
Number of pages5
JournalBulletin of Environmental Contamination and Toxicology
Volume83
DOIs
Publication statusPublished - 2009
Externally publishedYes

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Heavy Metals
Rivers
Catchments
Heavy metals
Brazil
Contamination
Blood
Agricultural wastes
Sewage treatment
Turtles
Reptiles
Pathology
Sewage
Fish
Fishes
Water
Monitoring
Serum
Population

Cite this

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title = "Heavy Metal Contamination in Phrynops geoffroanus (Schweigger, 1812) (Testudines: Chelidae) in a River Basin, Sao Paulo, Brazil",
abstract = "The Piracicaba River basin is considered the most disturbed river basin in the state of Sao Paulo. Considerable amounts of agricultural residues are seasonally drained into the river, and the region is also highly urbanized and industrialized with an incipient sewage treatment system. The presence of heavy metals has been previously reported for the water and riverbed in Piracicaba river basin. In this study we evaluated 13 heavy metals in the blood of 37 Geoffroy{\^a}¿¿s side-necked turtles, Phrynops geoffroanus, from Piracicaba River and Piracicamirim Creek, one of its tributaries. Blood levels of As, Co, Cr, Se and Pb varied among sites, whereas Sn varied between males and females. However, no obvious pathology was detected. Serum level of Cu (2,194 ng g-1) and Pb (1,150 ng g-1) found in this study are the highest ever described for any reptile; however, no clinical symptoms have been detected in the present study. There is no information about the time scale of such contamination, which could be currently subclinical and yet lead to a breakdown in the population reproductive success in a few years. Based on the present study, legal enforcement is urged in order to locate and extirpate heavy metal sources in the Piracicaba River basin. In addition, monitoring should include humans and commercial fish consumed in local markets.",
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author = "C Pina and V Lance and I Guardia and T Marques and L Verdade",
year = "2009",
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}

Heavy Metal Contamination in Phrynops geoffroanus (Schweigger, 1812) (Testudines: Chelidae) in a River Basin, Sao Paulo, Brazil. / Pina, C; Lance, V; Guardia, I; Marques, T; Verdade, L.

In: Bulletin of Environmental Contamination and Toxicology, Vol. 83, 2009, p. 771-775.

Research output: Contribution to journalArticle

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T1 - Heavy Metal Contamination in Phrynops geoffroanus (Schweigger, 1812) (Testudines: Chelidae) in a River Basin, Sao Paulo, Brazil

AU - Pina, C

AU - Lance, V

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AU - Marques, T

AU - Verdade, L

PY - 2009

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AB - The Piracicaba River basin is considered the most disturbed river basin in the state of Sao Paulo. Considerable amounts of agricultural residues are seasonally drained into the river, and the region is also highly urbanized and industrialized with an incipient sewage treatment system. The presence of heavy metals has been previously reported for the water and riverbed in Piracicaba river basin. In this study we evaluated 13 heavy metals in the blood of 37 Geoffroyâ¿¿s side-necked turtles, Phrynops geoffroanus, from Piracicaba River and Piracicamirim Creek, one of its tributaries. Blood levels of As, Co, Cr, Se and Pb varied among sites, whereas Sn varied between males and females. However, no obvious pathology was detected. Serum level of Cu (2,194 ng g-1) and Pb (1,150 ng g-1) found in this study are the highest ever described for any reptile; however, no clinical symptoms have been detected in the present study. There is no information about the time scale of such contamination, which could be currently subclinical and yet lead to a breakdown in the population reproductive success in a few years. Based on the present study, legal enforcement is urged in order to locate and extirpate heavy metal sources in the Piracicaba River basin. In addition, monitoring should include humans and commercial fish consumed in local markets.

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