Influence of a combination of agricultural chemicals on embryos of the endangered gold-striped salamander (Chioglossa lusitanica)

Archives of Environmental Contamination and Toxicology
Manuel E Ortiz-SantaliestraAdolfo Marco

Abstract

Pollution from agrochemicals may be contributing to the global decline of amphibian populations. Environmentally relevant concentrations of a fertiliser, ammonium nitrate, and a commercial formulation of the herbicide glyphosate Roundup Plus were tested on the embryonic development of Chioglossa lusitanica. This study introduces new data at three different levels. First, we provide previously unknown information about hatchling traits of C. lusitanica. Second, we present the first ecotoxicological study of this endangered species, to which environmental pollution is considered a major threat. Third, we conduct the first experiment with an amphibian species exposed to a mixture of a glyphosate-based herbicide and a nitrogenous fertiliser. Control individuals hatched with an average (±SD) total length of 18.77 (±2.02) mm and at an average Harrison's developmental stage of 44.58 (±1.24). Mean hatching time among controls was 11.52 (±1.29) weeks. None of the chemicals or their interaction produced lethal effects; however, a significant interaction was found when analysing total length at hatching. Individuals exposed to the herbicide hatched at a larger size than controls, and this effect was especially clear when the fertiliser wa...Continue Reading

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Citations

May 3, 2013·Environmental Toxicology and Chemistry·Norman WagnerStefan Lötters
Mar 13, 2014·Journal of Applied Toxicology : JAT·Robert AnnettAlice Hontela
Jun 4, 2014·PloS One·Matjaž KuntnerJonathan A Coddington

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