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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Acute toxicity of inorganic nitrogen (ammonium, nitrate and nitrite) to tadpoles of five tropical amphibian species

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Author(s):
Daam, Michiel A. [1] ; Ilha, Paulo [2] ; Schiesari, Luis [3]
Total Authors: 3
Affiliation:
[1] Univ Nova Lisboa, Dept Environm Sci & Engn, Fac Sci & Technol, CENSE, P-2829516 Lisbon - Portugal
[2] Univ Sao Paulo, Programa Posgrad Ecol, Inst Biociencias, Sao Paulo - Brazil
[3] Univ Sao Paulo, Escola Artes Ciencias & Humanidades, Ave Arlindo Bettio 1000, BR-03828000 Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: ECOTOXICOLOGY; v. 29, n. 9 JUL 2020.
Web of Science Citations: 0
Abstract

Despite the higher diversity of amphibians and the increasing use of agrochemicals in tropical countries, knowledge on the ecotoxicity of such compounds to tropical amphibians remains very limited. The aim of this study was, therefore, to assess the acute lethal toxicity of three nitrogen salts (ammonium sulphate, sodium nitrate and sodium nitrite) to tadpoles of five tropical frog species:Rhinella ornata,Boana faber,B. pardalis,Physalaemus cuvieri, andP. olfersii. The order of sensitivity to the nitrogen salts for all five species was sodium nitrite > ammonium sulphate > sodium nitrate. There was not a single most sensitive species to all three nitrogen salts. However, differences in generated 4-d LC50 values between the most and least sensitive test species were small (a factor 2 to 6). A comparison with published toxicity values does not suggest an intrinsic higher, or lower, sensitivity of the tropical species tested as compared to their temperate counterparts. Reported nitrogen concentrations in sugarcane fields do not indicate a lethal risk to the amphibian species tested. Chronic-exposure and field studies are recommended to evaluate amphibian sensitivity under environmental-realistic multiple-stressor conditions. (AU)

FAPESP's process: 15/18790-3 - Environmental effects of the pasture-sugarcane conversion and pasture intensification
Grantee:Luiz Antonio Martinelli
Support Opportunities: Research Program on Global Climate Change - Thematic Grants
FAPESP's process: 08/57939-9 - Impacts of the expansion of the sugarcane agroindustry on freshwater communities
Grantee:Luis Cesar Schiesari
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Young Investigators Grants