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No. de sistema: 000039595

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040 _ _ a| ECO
c| ECO
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245 0 0 a| Blood lead levels, δ-ALAD inhibition, and hemoglobin content in blood of giant toad (Rhinella marina) to asses lead exposure in three areas surrounding an industrial complex in Coatzacoalcos, Veracruz, Mexico
520 1 _ a| The Coatzacoalcos Region in Veracruz, Mexico houses one of the most important industrial complexes in Mexico and Latin America. Lead is an ubiquitous environmental pollutant which represents a great risk to human health and ecosystems. Amphibian populations have been recognized as biomonitors of changes in environmental conditions. The purpose of this research is to measure exposure to lead and evaluate hematological and biochemical effects in specimens of giant toads (Rhinella marina) taken from three areas surrounding an industrial complex in the Coatzacoalcos River downstream. Lead levels in toads' blood are between 10.8 and 70.6 μg/dL and are significantly higher in industrial sites. We have found a significant decrease in the delta-aminolevulinic acid dehydratase (δ-ALAD) activity in blood from 35.3 to 78 % for the urban–industrial and industrial sites, respectively. In addition, we have identified a strong inverse relationship between the δ-ALAD activity and the blood lead levels (r = −0.84, p < 0.001). Hemoglobin and mean corpuscular hemoglobin levels, as well as the condition factor, are found to be lower at industrial sites compared with the reference sites. Our results suggest that the R. marina can be considered a good biomonitor of the δ-ALAD activity inhibition and hematological alterations at low lead concentrations.
650 _ 4 a| Rhinella marina
650 _ 4 a| Población animal
650 _ 4 a| Anfibios
650 _ 4 a| Contaminación industrial
651 _ 4 a| Río Coatzacoalcos (México)
700 1 _ a| Ilizaliturri Hernández, César Arturo
700 1 _ a| González Mille, Donaji Josefina
e| coaut.
700 1 _ a| Mejía Saavedra, Jesús
e| coaut.
700 1 _ a| Espinosa Reyes, Guillermo
e| coaut.
700 1 _ a| Torres Dosal, Arturo
e| coaut.
700 1 _ a| Pérez Maldonado, Iván Nelinho
e| coaut.
773 0 _
t| Environmental Monitoring and Assessment
g| (May 2012)
x| 0167-6369
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Junio 2012
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
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Blood lead levels, δ-ALAD inhibition, and hemoglobin content in blood of giant toad (Rhinella marina) to asses lead exposure in three areas surrounding an industrial complex in Coatzacoalcos, Veracruz, Mexico
Ilizaliturri Hernández, César Arturo (autor)
González Mille, Donaji Josefina (autor)
Mejía Saavedra, Jesús (autor)
Espinosa Reyes, Guillermo (autor)
Torres Dosal, Arturo (autor)
Pérez Maldonado, Iván Nelinho (autor)
Contenido en: Environmental Monitoring and Assessment. (May 2012). ISSN: 0167-6369
No. de sistema: 39595
Tipo: - Artículo con arbitraje
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Inglés

"The Coatzacoalcos Region in Veracruz, Mexico houses one of the most important industrial complexes in Mexico and Latin America. Lead is an ubiquitous environmental pollutant which represents a great risk to human health and ecosystems. Amphibian populations have been recognized as biomonitors of changes in environmental conditions. The purpose of this research is to measure exposure to lead and evaluate hematological and biochemical effects in specimens of giant toads (Rhinella marina) taken from three areas surrounding an industrial complex in the Coatzacoalcos River downstream. Lead levels in toads' blood are between 10.8 and 70.6 μg/dL and are significantly higher in industrial sites. We have found a significant decrease in the delta-aminolevulinic acid dehydratase (δ-ALAD) activity in blood from 35.3 to 78 % for the urban–industrial and industrial sites, respectively. In addition, we have identified a strong inverse relationship between the δ-ALAD activity and the blood lead levels (r = −0.84, p < 0.001). Hemoglobin and mean corpuscular hemoglobin levels, as well as the condition factor, are found to be lower at industrial sites compared with the reference sites. Our results suggest that the R. marina can be considered a good biomonitor of the δ-ALAD activity inhibition and hematological alterations at low lead concentrations."