Sensitivity of Daphnia spinulata Birabén, 1917 to glyphosate at different salinity levels.

Autor: Lares BA; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Santa Rosa, La Pampa, Argentina. laresbetsabe@gmail.com.; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Rosa, La Pampa, Argentina. laresbetsabe@gmail.com., Vignatti AM; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Santa Rosa, La Pampa, Argentina., Echaniz SA; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Santa Rosa, La Pampa, Argentina., Cabrera GC; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Santa Rosa, La Pampa, Argentina., Jofré FC; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Santa Rosa, La Pampa, Argentina.; Instituto de Ciencias de La Tierra y Ambientales de La Pampa (CONICET-UNLPam), Santa Rosa, La Pampa, Argentina., Gutierrez MF; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Rosa, La Pampa, Argentina.; Instituto Nacional de Limnología, CONICET-UNL, Paraje El Pozo, Ciudad Universitaria UNL, Santa Fe, Argentina.; Escuela Superior de Sanidad 'Dr. Ramón Carrillo' (FBCB-UNL), Ciudad Universitaria, Santa Fe, Argentina.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 May; Vol. 31 (24), pp. 35308-35319. Date of Electronic Publication: 2024 May 10.
DOI: 10.1007/s11356-024-33586-2
Abstrakt: Daphnia spinulata Birabén, 1917 is an endemic cladoceran species, frequent in the zooplankton communities of the shallow lakes of the Pampean region of Argentina. These lakes have varying salinity levels and, being located in agricultural areas, are frequently subject to pesticide pollution. This study aimed to determine the effects of the herbicide glyphosate (Panzer Gold®) in combination with different salinity levels on the biological parameters of D. spinulata and its recovery ability after a short exposure. Three types of assays were performed: an acute toxicity test, a chronic assessment to determine survival, growth and reproduction, and recovery assays under optimal salinity conditions (1 g L -1 ). The LC 50 -48 h of glyphosate was 7.5 mg L -1 (CL 3.15 to 11.72). Longevity and the number of offspring and clutches were significantly reduced due to the combined exposure of glyphosate and increased salinity. The timing of the first offspring did not recover after glyphosate exposure. Our results reveal that D. spinulata is sensitive to the herbicide Panzer Gold® at concentrations well below those indicated in the safety data sheet of this commercial formulation, which causes stronger negative effects in conditions of higher salinity. Further research is needed to shed light on the sensitivity of this cladoceran to glyphosate and its variability under other interactive stress factors.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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