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Peer-reviewedCC BY 4.0Biological Trace Element Research

Assessment of Exposure to Essential and Non-Essential Elements through Concentrations in Tissues of Chelonia mydas (Green turtles) from the South Atlantic, Northeast Brazil

  • Midiã S. Rodrigues1,2
  • Iago J. S. da Silva3
  • Cristina F. da Fonseca4
  • Pierre C. Soares5
  • Múcio L. B. Fernandes6
  • Geraldo J. B. de Moura1,2,7
7 affiliations
  1. 1Programa de Pós-Graduação Em Ciência Animal Tropical (PGCAT), Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco 52171-9000, Brazil
  2. 2Laboratório de Estudos Herpetológicos E Paleherpertológicos (LEHP), Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco 52171-9000 Brazil
  3. 3Unidade Acadêmica de Belo Jardim (UABJ), Universidade Federal Rural de Pernambuco (UFRPE), Rodovia PE 166, km 5, Euno Andrade da Silva, Belo Jardim, Pernambuco 55156-580 Brazil
  4. 4Laboratório de Parasitologia (LAPAR), Departamento de Biologia, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco 52171-9000 Brazil
  5. 5Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco 52171-9000 Brazil
  6. 6Laboratório de Estudos Ambientais, Universidade de Pernambuco (UPE), Rua Amaro Maltês de Farias, Nazaré da Mata, Pernambuco 55800-000 Brazil
  7. 7Programa de Pós-Graduação Em Ecologia (PPGE), Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco 52171-9000 Brazil
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Abstract

This study aimed to evaluate the exposure of Chelonia mydas (green turtles) inhabiting the south coast of Pernambuco, Northeast Brazil, to essential and toxic elements. Concentrations of Al, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, and Zn were determined in shell, muscle, liver, and kidney samples from 43 individuals using ICP-OES. Element concentrations varied according to tissue type. Specifically, the average concentrations of Al in shell (1064 mg kg−1 d.w.) and Fe in liver (2069 mg kg−1 d.w.) were the highest, whereas Al, Co, Cr, and Mo in muscle were the lowest and fell below the method's limit of quantification (LOQ). Meanwhile, Pb was above the LOQ only in muscle (average of 4.1 mg kg−1 d.w.). Cadmium levels were markedly elevated, with average concentrations of 0.15, 0.29, 12, and 49 mg kg−1 d.w. in shell, muscle, liver, and kidney, respectively; furthermore, concentrations in muscle, liver, and kidney were well above the limits established by Brazilian legislation (0.05, 0.5, and 1.0 mg kg−1, respectively). High levels of Cd may be linked to the presence of fertilizers in coastal areas, the ingestion of contaminated food, and chronic exposure. Notably, fibropapillomatosis (FP) showed a significant relationship with shell Cu content, demonstrating that this metal is linked to the etiology and development of FP. Overall, multi-elemental profiling of sea turtle tissues can serve as a cost-effective surveillance tool for marine ecosystem monitoring and for detecting anthropogenic impacts on sea turtle health.

Supplementary Information: The online version contains supplementary material available at https://doi.org/10.1007/s12011-026-05303-2.

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Cite

BibTeXRIS
BibTeX
@article{rodrigues2026assessment,
  title = {{Assessment of Exposure to Essential and Non-Essential Elements through Concentrations in Tissues of Chelonia mydas (Green turtles) from the South Atlantic, Northeast Brazil}},
  author = {Midiã S. Rodrigues and Iago J. S. da Silva and Cristina F. da Fonseca and Pierre C. Soares and Múcio L. B. Fernandes and Geraldo J. B. de Moura},
  journal = {Biological Trace Element Research},
  year = {2026},
  month = aug,
  doi = {10.1007/s12011-026-05303-2},
  url = {https://doi.org/10.1007/s12011-026-05303-2},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Assessment of Exposure to Essential and Non-Essential Elements through Concentrations in Tissues of Chelonia mydas (Green turtles) from the South Atlantic, Northeast Brazil
AU  - Midiã S. Rodrigues
AU  - Iago J. S. da Silva
AU  - Cristina F. da Fonseca
AU  - Pierre C. Soares
AU  - Múcio L. B. Fernandes
AU  - Geraldo J. B. de Moura
PY  - 2026
DA  - 2026/08/19
JO  - Biological Trace Element Research
DO  - 10.1007/s12011-026-05303-2
UR  - https://doi.org/10.1007/s12011-026-05303-2
AB  - This study aimed to evaluate the exposure of Chelonia mydas (green turtles) inhabiting the south coast of Pernambuco, Northeast Brazil, to essential and toxic elements. Concentrations of Al, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, and Zn were determined in shell, muscle, liver, and kidney samples from 43 individuals using ICP-OES. Element concentrations varied according to tissue type. Specifically, the average concentrations of Al in shell (1064 mg kg−1 d.w.) and Fe in liver (2069 mg kg−1 d.w.) were the highest, whereas Al, Co, Cr, and Mo in muscle were the lowest and fell below the method's limit of quantification (LOQ). Meanwhile, Pb was above the LOQ only in muscle (average of 4.1 mg kg−1 d.w.). Cadmium levels were markedly elevated, with average concentrations of 0.15, 0.29, 12, and 49 mg kg−1 d.w. in shell, muscle, liver, and kidney, respectively; furthermore, concentrations in muscle, liver, and kidney were well above the limits established by Brazilian legislation (0.05, 0.5, and 1.0 mg kg−1, respectively). High levels of Cd may be linked to the presence of fertilizers in coastal areas, the ingestion of contaminated food, and chronic exposure. Notably, fibropapillomatosis (FP) showed a significant relationship with shell Cu content, demonstrating that this metal is linked to the etiology and development of FP. Overall, multi-elemental profiling of sea turtle tissues can serve as a cost-effective surveillance tool for marine ecosystem monitoring and for detecting anthropogenic impacts on sea turtle health.  Supplementary Information: The online version contains supplementary material available at https://doi.org/10.1007/s12011-026-05303-2.
SN  - 0163-4984
SN  - 1559-0720
ER  -