Journal ArticleDOI
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
César A. Ilizaliturri-Hernández,Donaji J. González-Mille,Jesús Mejía-Saavedra,Guillermo Espinosa-Reyes,Arturo Torres-Dosal,Iván N. Pérez-Maldonado +5 more
TLDR
The 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, and Hemoglobin and mean corpuscular hemoglobin levels are found to be lower at industrial sites compared with the reference sites.Abstract:
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.read more
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Biological endpoints, enzyme activities, and blood cell parameters in two anuran tadpole species in rice agroecosystems of mid-eastern Argentina
Andres Maximiliano Attademo,Andres Maximiliano Attademo,Paola M. Peltzer,Paola M. Peltzer,Rafael Carlos Lajmanovich,Rafael Carlos Lajmanovich,Mariana C. Cabagna-Zenklusen,Celina Maria Junges,Celina Maria Junges,Agustín Bassó +9 more
TL;DR: The results demonstrate the existence of apparent differences in sensitivity between species in a series of sublethal responses to short-term exposure in RF after the application of Lambda-cyhalothrin and suggest that the integral use of biological endpoints together with biomarkers (cholinesterase, GST, and blood cell parameters) may be a promising integral procedure for investigating pesticide exposure in wild frog populations.
Journal ArticleDOI
Effect of exposure to contaminated pond sediments on survival, development, and enzyme and blood biomarkers in veined treefrog (Trachycephalus typhonius) tadpoles.
Paola M. Peltzer,Paola M. Peltzer,Rafael Carlos Lajmanovich,Rafael Carlos Lajmanovich,Andres Maximiliano Attademo,Andres Maximiliano Attademo,Celina Maria Junges,Celina Maria Junges,Mariana C. Cabagna-Zenklusen,María Rosa Repetti,María E. Sigrist,Horacio Beldoménico +11 more
TL;DR: The use of different biological endpoints and biomarkers on anuran larvae at sites where pond sediment is risky and sediment management should be considered is highlighted and would be useful as a management tool to decide if there are sufficient exposures to suspected pollutants on sediment.
Journal ArticleDOI
Adverse effect of agroecosystem pond water on biological endpoints of common toad (Rhinella arenarum) tadpoles.
TL;DR: It is found that the poor water quality of agroecosystem ponds has impact on the health of the tadpoles, and this could affect the persistence of populations.
Journal ArticleDOI
Human health risks associated with heavy metals in soil in different areas of San Luis Potosí, México
Francisco Javier Pérez-Vázquez,Rogelio Flores-Ramírez,Ángeles C. Ochoa-Martínez,Leticia Carrizales-Yáñez,César A. Ilizaliturri-Hernández,Jocelyne Moctezuma-González,Lucia G. Pruneda-Álvarez,Tania Ruíz-Vera,Sandra T. Orta-García,Ana K. González-Palomo,Iván N. Pérez-Maldonado +10 more
TL;DR: Maximum cumulative hazard index values showed higher risk in all sampled locations (HIs > 1.0), suggesting that these sites can pose a non-carcinogenic risk to the populations (children) living in those areas.
Journal ArticleDOI
Biochemical changes in certain enzymes of Lysapsus limellium (Anura: Hylidae) exposed to chlorpyrifos.
Andres Maximiliano Attademo,Paola M. Peltzer,Rafael Carlos Lajmanovich,Mariana C. Cabagna-Zenklusen,Celina Maria Junges,Eduardo Lorenzatti,Carolina Aró,Paula Grenón +7 more
TL;DR: The use of biomarkers (AChE, CbE, GST, and CAT) provides different lines of evidences for ecotoxicological risk assessment of wild frog populations at sites contaminated with pesticides.
References
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