As a consequence of anthropogenic environmental change, the world is facing a possible
sixth mass extinction event. The severity of this biodiversity crisis is exemplified by the rapid …

The acute and short term chronic toxicity of both the herbicide butyl ester of 2, 4‐
Dichlorophenoxyacetic acid (2, 4‐D) and a commercial formulation (CF) were evaluated on …

For more than 20 years, conservationists have agreed that amphibian populations around
the world are declining. Results obtained through laboratory or mesocosm studies and …

Cadmium teratogenic effects and metallothionein expression were studied in tissues of
lizard embryos at different stages of development. Incubation of eggs in cadmium …

Increasing negative impacts on natural resources and life support systems result from
continuing population growth and anthropic activities. This situation is worsened by …

The acute and chronic toxicity of bisphenol A (BPA) was evaluated on the common South
American toad Rhinella arenarum embryos and larvae by means of continuous and pulse …

Copper toxicity in different embryonic and larval stages of the common South American toad
Rhinella arenarum was evaluated by means of continuous and 24‐h pulse treatments in 12 …

Lethal and sublethal toxicity of the major chemical used in epoxide compounds,
epichlorohydrin (ECH) was evaluated on the early life cycle of the common South American …

Anurans are considered one of the most threatened animal groups in the world. Agricultural
activities are related to water pollution and contamination, which affects biphasic organisms …

Nickel, a widely distributed heavy metal in the biosphere, produces systemic, carcinogenic,
and teratogenic effects. The objectives of the present study are to report the acute, short …