Document
type: Class

The giant toad (Rhinella marina) as a biomonitor of different polluted scenarios in Mexico
type: Thing
freetext keyword: Amphibians; Biomarkers; Biomonitor; Pollution
related by: authorship_46996
type: Information Content Entity
related by: authorship_47000
type: Entity
related by: authorship_47001
type: Continuant
estado: published
abstract: The giant toad (Rhinella marina) is an anuran amphibian, omnivorous and opportunistic. Its life cycle, as well as its somatic and hepatosomatic index, voracious appetite and highly permeable skin make it a susceptible species to the bioaccumulation of organic and inorganic pollutants and their toxicological effects. Due to these characteristics R. marina is considered a good biomonitor of environmental pollution. This chapter presents three case studies that demonstrate the above. As a first case, toads were collected from sampling stations in the Río Verde (rural-reference) and Río Santiago (urban-impacted) of Jalisco. As exposure biomarkers were determined lead (Pb) and persistent organic pollutants (POPs) in muscle and liver tissue, respectively, and as effect biomarker: DNA damage (comet assay) in complete blood. A major presence of Pb was found in muscle tissue of the organisms that inhabiting the urban area (181.8 ng/g tissue) compared to those in the rural area (108.6 ng/g tissue); dichlorodiphenyltrichloroethane (DDT) and its metabolites; also, endosulfan, atrazine, hexachlorocyclohexane (HCH) isomers and hexachlorobenzene (HCB) was found in liver tissue of toads from urban areas. DNA damage in urban toads compared with laboratory toads were found. This shows the exposure and possible effects of pollutants in that area. In the second case of study, the objective of the research was to evaluate the persistent organic pollutants in the liver tissue as well as DNA damage in the blood of R. marina of two indigenous areas (Cuatlamayan and Tocoy, San Luis Potosí, México). The results of exposure to toads indicate the presence of atrazine, HCB, HCH and isomers, DDT and metabolites. The percentage of presence of micronuclei for Cuatlamayan and Tocoy was 77.7%25 and 80%25, respectively, compared with the laboratory toads (42.8%25). This study provides a baseline of exposure to POPs and genotoxic effect in different indigenous and rural areas of the Huasteca region of…
type: Chapter
type: Document
e iscopus: 2-s2.0-85061049284
most specific type: Document
origen: scopus
related by: authorship_46995
has publication venue: Amphibians: Biology, Ecology and Conservation
type: Book Section
related by: authorship_46999
page end: 94
date time value: chapter date 7353
type: Document Part
related by: authorship_46997
type: Generically Dependent Continuant
page start: 55
crisid: 7353
related by: authorship_46998
most specific type: Chapter

Continuant
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Amphibians: Biology, Ecology and Conservation
type: Book
type: Generically Dependent Continuant
type: Continuant
type: Document
type: Thing
type: Information Content Entity
type: Entity
publication venue for: The giant toad (Rhinella marina) as a biomonitor of different polluted scenarios in Mexico

Generically Dependent Continuant
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Book Section
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Document Part
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RDF description of The giant toad (Rhinella marina) as a biomonitor of different polluted scenarios in Mexico - http://orbis.uaslp.mx/vivo/individual/scopus7352
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date: 2026-08-24T21:51:20
publisher: vivo
type: Document

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Chapter
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