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Chemical activation in Rhinella arenarum oocytes: effect of dehydroleucodine (DhL) and its hydrogenated derivative (2H-DhL)
(Cambridge University Press, 2014-11)
Mature oocytes are arrested in metaphase II due to the presence of high levels of active maturation promoting factor (MPF). After fertilization, active MPF levels decline abruptly, enabling oocytes to complete meiosis II. ...
Histopathological and biological studies of the effect of cadmium on Rhinella arenarum gonads
(Elsevier, 2012-09)
This study was to determine the lethal dose 50 (LD50) of CdCl2 in adult Rhinella arenarum and analyzed the effect of two sublethal doses (0.5 and 5mg/kg) of the xenobiotic in gonads. The 48h LD50 were 50.0 and 49.8mg/kg ...
Impact assessment of agriculture and livestock over age, longevity and growth of populations of common toad Rhinella arenarum (Anura: Bufonidae), central area of Argentina
(Elsevier Science, 2018-05)
The central area of Argentina has been greatly affected mainly due to urbanization and intensive agriculture (corn, soybean and cattle). Age, longevity and growth were determined in populations of the common toad, Rhinella ...
Blood biomarkers of common toad Rhinella arenarum following chlorpyrifos dermal exposure
(Sciendo, 2018-03)
Chlorpyrifos (CPF) is a broad spectrum pesticide commonly used for insect control, has great affinity for lipids and is thus a potential for bioaccumulation in aquatic organisms. The aim of this study was to evaluate the ...
Morphology and size of blood cells of Rhinella arenarum (Hensel, 1867) as environmental health assessment in disturbed aquatic ecosystem from central Argentina
(Springer Heidelberg, 2017-11)
Four populations of Rhinella arenarum from aquatic environments with different degrees of disturbance in central Argentina were compared to assess the ability of cytomorphology and cytomorphometry of blood cells as a ...
Evaluation in situ of genotoxicity and stress in South American common toad Rhinella arenarum in environments related to fluorite mine
(Springer Heidelberg, 2017-07)
Little attention has been paid to the impact of wastewater generated by mining activities on fluoride. In this study, we evaluated the hematology responses of common South American toad Rhinella arenarum inhabiting natural ...
MALDI-MS argininyl bufadienolide esters fingerprint from parotoid gland secretions of Rhinella arenarum : age, gender and seasonal variation
(John Wiley & Sons Ltd, 2018-06)
In many amphibians, the granular glands can be grouped in special regions forming macroglands. This is the case of toads, characterized by the presence of a pair of parotoid macroglands, strategically located to give ...
Comparative toxicity of two different dimethoate formulations in the common toad (Rhinella arenarum) tadpoles
(Springer, 2019-12)
Dimethoate (D) are among the most commonly used organophosphates insecticides in the world. To evaluate the toxicity of two D formulations were selected as test organisms tadpoles of Rhinella arenarum. This toad species ...
Cadmium-calcium interference in the Rhinella arenarum oviduct
(Taylor & Francis, 2019-08)
Given that the cadmium (Cd) toxicity could be due to its interference with the calcium (Ca) homeostasis, the aim of this work was to study the effect of Cd over the presence, distribution and volume density (Vv) of Ca and ...
Common toad Rhinella arenarum (Hensel, 1867) and its importance in assessing environmental health: test of micronuclei and nuclear abnormalities in erythrocytes
(Springer, 2015-09)
Anthropogenic activities may generate significant changes in the integrity of aquatic ecosystems, so long-term monitoring of populations that inhabit them is crucial. Counting micronucleated erythrocytes (MN) and erythrocytic ...