Tracing environmental contaminants in magellanic penguins: Legacy POPs and metabolic clearance of PAHs.

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Title: Tracing environmental contaminants in magellanic penguins: Legacy POPs and metabolic clearance of PAHs.
Authors: de Carvalho Storti, Thales Henrique1 (AUTHOR), de Sousa Pereira, Antonio Derley1 (AUTHOR) antonioderley@yahoo.com, Taboada Timoszczuk, Cristian1 (AUTHOR), de Lucca Marcello Jarcovis, Raphael1 (AUTHOR), Dias de Araujo, Lígia1,2 (AUTHOR), Alves Maia da Silva, Daniela1 (AUTHOR), Rodrigues dos Santos, Felipe1 (AUTHOR), da Silva, Josilene1 (AUTHOR), Taniguchi, Satie1 (AUTHOR), Lourenço, Rafael Andre1 (AUTHOR)
Source: Environmental Science & Pollution Research. Apr2026, Vol. 33 Issue 15, p7346-7355. 10p.
Subject Terms: *Polychlorinated biphenyls, *Polycyclic aromatic hydrocarbons, *Penguins, *Hexachlorobenzene, *Organochlorine pesticides, *Persistent pollutants, *Bioaccumulation, *Marine ecology
Geographic Terms: Brazil
Abstract: Persistent organic pollutants (POPs) are widespread contaminants that bioaccumulate in the food web, posing risks to wildlife, especially top predators. This study investigates the occurrence of POPs in liver tissues of 23 Magellanic Penguins (Spheniscus magellanicus) stranded along the Brazilian coast from June to September 2017. We analyzed concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides (DDTs, Drins, mirex, endosulfans), and hexachlorobenzene (HCB). POPs were detected in all samples. PCBs and DDTs showed the highest concentrations, with PCBs ranging from < LOD to 199.4 ng g−1 ww (mean: 57.2 ± 49.0 ng g−1 ww), showing a declining trend compared to previous reports. DDT metabolites, especially p,p′-DDE, remained persistent in the samples. HCB was found in 70% of the individuals but at lower levels than previously reported. Other pesticides were present at trace levels, consistent with their historical use in Brazil. No polycyclic aromatic hydrocarbons (PAHs) were detected, which we attribute to rapid metabolic clearance in penguins rather than lack of exposure. This emphasizes the species' efficiency in eliminating these non-persistent compounds. Our findings highlight the continued presence of legacy POPs in the marine ecosystem and their bioaccumulation in seabirds. Although PCB levels appear to be decreasing, these pollutants still pose ecological risks. Monitoring efforts remain essential, especially considering the potential for re-exposure due to global distillation and melting of polar ice. This study contributes to understanding contaminant dynamics in the Southern Hemisphere and underscores the importance of long-term monitoring of marine wildlife. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 193627629
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Tracing environmental contaminants in magellanic penguins: Legacy POPs and metabolic clearance of PAHs.
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  Label: Abstract
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  Data: Persistent organic pollutants (POPs) are widespread contaminants that bioaccumulate in the food web, posing risks to wildlife, especially top predators. This study investigates the occurrence of POPs in liver tissues of 23 Magellanic Penguins (Spheniscus magellanicus) stranded along the Brazilian coast from June to September 2017. We analyzed concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides (DDTs, Drins, mirex, endosulfans), and hexachlorobenzene (HCB). POPs were detected in all samples. PCBs and DDTs showed the highest concentrations, with PCBs ranging from &lt; LOD to 199.4 ng g−1 ww (mean: 57.2 &#177; 49.0 ng g−1 ww), showing a declining trend compared to previous reports. DDT metabolites, especially p,p′-DDE, remained persistent in the samples. HCB was found in 70% of the individuals but at lower levels than previously reported. Other pesticides were present at trace levels, consistent with their historical use in Brazil. No polycyclic aromatic hydrocarbons (PAHs) were detected, which we attribute to rapid metabolic clearance in penguins rather than lack of exposure. This emphasizes the species&#39; efficiency in eliminating these non-persistent compounds. Our findings highlight the continued presence of legacy POPs in the marine ecosystem and their bioaccumulation in seabirds. Although PCB levels appear to be decreasing, these pollutants still pose ecological risks. Monitoring efforts remain essential, especially considering the potential for re-exposure due to global distillation and melting of polar ice. This study contributes to understanding contaminant dynamics in the Southern Hemisphere and underscores the importance of long-term monitoring of marine wildlife. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=193627629
RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1007/s11356-026-37785-x
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: 7346
    Subjects:
      – SubjectFull: Polychlorinated biphenyls
        Type: general
      – SubjectFull: Polycyclic aromatic hydrocarbons
        Type: general
      – SubjectFull: Penguins
        Type: general
      – SubjectFull: Hexachlorobenzene
        Type: general
      – SubjectFull: Organochlorine pesticides
        Type: general
      – SubjectFull: Persistent pollutants
        Type: general
      – SubjectFull: Bioaccumulation
        Type: general
      – SubjectFull: Marine ecology
        Type: general
      – SubjectFull: Brazil
        Type: general
    Titles:
      – TitleFull: Tracing environmental contaminants in magellanic penguins: Legacy POPs and metabolic clearance of PAHs.
        Type: main
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            NameFull: de Carvalho Storti, Thales Henrique
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            NameFull: de Sousa Pereira, Antonio Derley
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            NameFull: Taboada Timoszczuk, Cristian
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            NameFull: Dias de Araujo, Lígia
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            – D: 21
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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            – TitleFull: Environmental Science & Pollution Research
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