Levels of organochlorine pesticides in Amazon turtle (<i>Podocnemis unifilis</i>) in the Xingu River, Brazil

Pignati, Marina Teófilo; Souza, Larissa Costa de; Mendes, Rosivaldo de Alcântara; Lima, Marcelo de Oliveira; Pignati, Wanderlei Antônio; Pezzuti, Juarez Carlos Brito

doi:10.1080/03601234.2018.1505077

Cited by 16 publications

(2 citation statements)

References 37 publications

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“…In addition to ornamental fishing, there are other factors that threaten the survival of the Xingu freshwater stingray. Habitat degradation from mining, deforestation, and water pollution reduce suitable areas for P. leopoldi (Charvet et al., 2022; Neill et al., 2020; Pignati et al., 2018; Ribeiro et al., 2017). Climate change is also altering flood‐drought dynamics in the Xingu River (Lucas et al., 2021), which may affect P. leopoldi reproductive cycles which are closely linked to these dynamics (Charvet‐Almeida et al., 2005).…”

Section: Introductionmentioning

confidence: 99%

Dots in the dark: dorsal polychromatism in the endemic Xingu Freshwater Stingray

Torres,

Charvet,

Faria

et al. 2023

Journal of Zoology

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Polychromatism refers to the presence of two or more color patterns within a species. Several species exhibit polychromatic patterns, including some elasmobranchs such as the Xingu Freshwater Stingray (Potamotrygon leopoldi), a threatened, endemic freshwater stingray species that is exploited in the international aquarium trade. Analysis of polychromatic patterns can provide insight into evolutionary mechanisms and be a useful tool for monitoring international trade. In this context, the present study analyzed intraspecific color variation in P. leopoldi. A total of 241 individuals collected in two areas along the Xingu River in Brazil were used for the study. Four dorsal color patterns of P. leopoldi were described. Size differences between color classes were statistically significant, suggesting that these color variations are associated with ontogenetic color changes. In addition, two color morphs specific to each locality were identified and described. Moreover, the occurrence of polychromatic forms in a Potamotrygoninae species may contribute to the understanding of diversification in this group, since some mechanisms of speciation are associated with polychromatism. Analysis of color variation in P. leopoldi is expected to help improve trade monitoring, especially given the existence of look‐alike species.

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Section: Introductionmentioning

confidence: 99%

Dots in the dark: dorsal polychromatism in the endemic Xingu Freshwater Stingray

Torres,

Charvet,

Faria

et al. 2023

Journal of Zoology

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“…This fact has contributed to the ecological impact on rivers, lakes and dams (Rodrigues, Lopes, and Pardal, 2013;Mesak et al, 2019). The poor use of these compounds has been causing contamination of target and non-target organisms in the environment (Mello and Silveira, 2012;Pignati, Souza, Mendes, Lima, and Pezzuti, 2018). The pesticides, when applied to plant and to the soil, tend to move mainly to surface and groundwater, and reach the bodies of water, directly, or through rainwater and irrigation (Mahboob, Al-Ghanim, Al-Misned and Ahmed, 2014).…”

Section: Introductionmentioning

confidence: 99%

Pesticide residues detected in Colossoma macropomum by the modified QuEChERS and GC-MS/MS methods

Barbosa,

Pereira,

Silva

et al. 2023

Acta Sci Technol

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This study aimed to detect pesticides in the muscle tissue of farmed tambaqui (Colossoma macropomum), in relation to good management practices (GMP) and prophylaxis and biosecurity measures. There were 54 fish farms randomly selected from the 138 found in the Microregion of Zona da Mata, RO - Brazil, for visits and collection of epidemiological data. There were extracted 24 muscle fragments were extracted from dorsolateral portion of the tail of five specimens tambaqui per fish farming. The methods of detection and quantification of pesticide residues were modified QuEChERS and GC-MS/MS. Most fish farms are small businesses and their production areas are smaller than a rural module. These ventures are an income alternative for rural producers, this information is confirmed in percentage of 88.89% (48/54) of the rural properties visited have livestock and agriculture as their main productive activity. Water monitoring was carried out in 70.37% of fish farms. However, with frequency of two water analyzes per year. Preventive and prophylactic measures taken were performed in 30% (17/54). In addition, 7% (4/54) of fish farmers reported using sodium chloride and/or using formalin as a secondary preventive measure. It is also important to mention that there was a report of administration of potassium permanganate in a fish farm, 2% (1/54). There were 12.49% (3/54) positive for at least one pesticide. The chemical compounds found Azosxystrobin (<LOQ), Epoxiconazole (<LOQ) and Chlorpyrifos (<LOQ). The presence of Azosxystrobin, Epoxiconazol and Chlorpyrifos in tambaqui muscle tissue samples was detected above acceptable limits by the PNCRC.

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A State‐of‐the‐Art Review of Indigenous Peoples and Environmental Pollution

Fernández‐Llamazares

Garteizgogeascoa

Basu

et al. 2020

Integr Envir Assess & Manag

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Indigenous peoples (IPs) worldwide are confronted by the increasing threat of pollution. Based on a comprehensive review of the literature (n = 686 studies), we present the current state of knowledge on: 1) the exposure and vulnerability of IPs to pollution; 2) the environmental, health, and cultural impacts of pollution upon IPs; and 3) IPs' contributions to prevent, control, limit, and abate pollution from local to global scales. Indigenous peoples experience large burdens of environmental pollution linked to the expansion of commodity frontiers and industrial development, including agricultural, mining, and extractive industries, as well as urban growth, waste dumping, and infrastructure and energy development. Nevertheless, IPs are contributing to limit pollution in different ways, including through environmental monitoring and global policy advocacy, as well as through local resistance toward polluting activities. This work adds to growing evidence of the breadth and depth of environmental injustices faced by IPs worldwide, and we conclude by highlighting the need to increase IPs' engagement in environmental decision-making regarding pollution control. Integr Environ Assess Manag 2020;16:324-341.

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Levels of organochlorine pesticides in Amazon turtle (Podocnemis unifilis) in the Xingu River, Brazil

Cited by 16 publications

References 37 publications

Dots in the dark: dorsal polychromatism in the endemic Xingu Freshwater Stingray

Dots in the dark: dorsal polychromatism in the endemic Xingu Freshwater Stingray

Pesticide residues detected in Colossoma macropomum by the modified QuEChERS and GC-MS/MS methods

A State‐of‐the‐Art Review of Indigenous Peoples and Environmental Pollution

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