Multi-and transgenerational synergistic effects of glyphosate and chlorpyrifos at environmentally relevant concentrations in the estuarine rotifer Proales similis

Rebolledo, Uriel Arreguin; Osuna, Federico Páez; Betancourt‐Lozano, Miguel; Rico‐Martínez, Roberto

doi:10.1016/j.envpol.2022.120708

Cited by 11 publications

(1 citation statement)

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“…Therefore, herein we present some ideas that shall be addressed in further experiments, which are beyond the aim of this study. The generation time (G) in Lecane papuana is about 3-4 days; thus, in the 14-d period (as with A. guttata) we would expect finding not only one rotifers generation but some others, which could be less sensitive to IBP after adaptation, a phenomenon observed in multigenerational and transgenerational toxicity tests [50], then, the rotifers rate of population increase might exhibit higher EC50 values (lower sensitivity), although not at the same level than A. guttata (less sensitive to IBP). Such speculation is based on the results of non-exposed organisms, because exposure to IBP increased the G and reduced the IRPI (Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of the Non-Steroidal Anti-Inflammatory Drug Ibuprofen on the Chydorid Alona guttata (Chydoridae: Aloninae) and the Rotifer Lecane papuana (Monogononta: Lecanidae) Fed on Different Algal Densities

Fragoso-Fuentes,

Rico-Martínez,

Arzate-Cárdenas

2024

Pol. J. Environ. Stud.

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Ibuprofen (IBP) has demonstrated its toxicological potential toward aquatic biota: affecting microalgae and their nutritional value and altering the population growth of algae-feeding zooplankters.This study assessed the effect of a) IBP sublethal concentrations, and b) three different algal densities (Nannochloropsis oculata at 0.25, 0.50, and 1.00 × 10 6 cells/mL) on Alona guttata and Lecane papuana. We determined LC50 values for both species (63.476 mg/L and 12.053 mg/L, respectively), and then five sublethal concentrations (based on their respective LC50) were chosen to assess population growth effects. Survival and fertility of A. guttata were affected at the two highest concentrations tested, diminishing population growth, but seemed non-affected by the algal density. In contrast, L. papuana was significantly affected by both factors, IBP and algal concentrations, showing higher sensitivity to IBP at the lowest algal density (EC50 = 0.524 mg/L) in comparison to those organisms fed on 1 × 10 6 cells/mL (EC50 = 3.097 mg/L). Discussion considered the availability of energy in terms of algal density, the possible biomagnification of IBP from algae to zooplankters, and the algae-mediated biotransformation and removal of IBP. Thus, the interactions of these factors could have mediated the differential effects observed between A. guttata and L. papuana.

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Section: Resultsmentioning

confidence: 99%