Hrvatske vode, Vol. 30 No. 122, 2022.
Original scientific paper
Impact of temperature and pesticides on hatching of the European fire-bellied toad, Bombina bombina (Linnaeus, 1761)
Olga Jovanović Glavaš
orcid.org/0000-0001-6302-6097
; Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Željka Lončarić
orcid.org/0000-0002-5531-2277
; Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Abstract
Amphibians are recognized as the globally most endangered group of vertebrates, one of the reasons being the application of various xenobiotics, such as pesticides. The paper examines the impact of different pesticides on the Bombina bombina egg development. Dimethoate, pirimiphos-methyl and glyphosate at different temperatures were used. The hatching of exposed eggs was observed at temperatures of 8°C, 12°C, 18°C, 25°C and 30°C, and compared to the control group. Regardless of the treatment, the temperature of 8°C was too low for the embryonic development of the European fire-bellied toad. At the temperature of 12°C, the eggs treated with pirimiphos-methyl hatched before those in the control group and group exposed to dimethoate. Pirimiphos-methyl and dimethoate had the strongest impact on the embryonic development at the temperature of 30°C, causing its prolongation. In addition, this research confirmed the negative impact of glyphosate on embryonic development of toads, earlier recorded in other amphibian species, with no eggs from this group hatching.
Keywords
amphibians, dimethoate, pirimiphos-methyl, glyphosate, embryonic development
Hrčak ID:
300714
URI
Publication date:
29.12.2022.
Visits: 584 *