ArticleEnvironmental monitoring and assessment2014
Biological endpoints, enzyme activities, and blood cell parameters in two anuran tadpole species in rice agroecosystems of mid-eastern Argentina.
Article in Environmental monitoring and assessment, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 53 citations in OpenAlex.
- Trematodes coupled with neonicotinoids: effects on blood cell profiles of a model amphibian.Parasitology research · 2021Article
- Effects of the emulsifiable herbicide Dicamba on amphibian tadpoles: an underestimated toxicity risk?Environmental science and pollution research international · 2021Article
- Lethal and sublethal effects of the natural and healthy spinosad-based formulation Tracer™ on tadpoles of two neotropical species.Environmental science and pollution research international · 2021Article
- An imazethapyr-based herbicide formulation induces genotoxic, biochemical, and individual organizational effects in Leptodactylus latinasus tadpoles (Anura: Leptodactylidae).Environmental science and pollution research international · 2020Article
- Effect of soil disturbance by agricultural activities on the life history traits of monkey frog (Pithecopus azureus).Environmental monitoring and assessment · 2019Article
- Blood biomarkers of common toadInterdisciplinary toxicology · 2018Article
- Evaluation in situ of genotoxicity and stress in South American common toad Rhinella arenarum in environments related to fluorite mine.Environmental science and pollution research international · 2017Article
- Effects of a commonly used glyphosate-based herbicide formulation on early developmental stages of two anuran species.Environmental science and pollution research international · 2017Article
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Authors and funding
6 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Different biological variables of tadpoles, including survival, development and growth rates, and biomarkers [cholinesterases, glutathione-S-transferases (GST), and blood cell morphology] were evaluated in two anuran species, Scinax squalirostris (Hylidae) and Leptodactylus mystacinus (Leptodactylidae), using in situ experimental chambers in a rice field (RF) sprayed with insecticide Lambda-cyhalothrin (LTC) by aircraft in Santa Fe Province, Argentina. We found a significant decrease in body weight (0.62 ± 0.04 g) of L. mystacinus and an increased development rate of S. squalirostris in individuals from RF (41 ± 1; Gosner) with respect to individuals from the reference site (RS: 0.93 ± 0.04 g and 37 ± 0; respectively). In S. squalirostris, individuals from RF mean values of butyrylcholinesterase activities decreased at 48 (4.09 ± 0.32 nmol min-1 mg-1 of TP) and 96 h (3.74 ± 0.20 nmol min-1 mg-1 of TP), whereas inhibition of acetylcholinesterase was observed at 96 h (47.44 ± 2.78 nmol min-1 mg-1 of TP). In L. mystacinus from RF, an induction of acetylcholinesterase activity was observed at 96 h (36.01 ± 1.09 nmol min-1 mg-1 of TP). Glutathione-S-transferase levels varied between species, being higher in L. mystacinus individuals but lower in S. squalirostris from RF at 48 (272.29 ±11.78 and 71.87 ± 1.70 nmol min-1 mg-1 of TP; respectively) and 96 h (279.25 ± 13.06 and 57.62 ± 4.58 nmol min-1 mg-1 of TP, respectively). Blood cell parameters revealed a lower number of mitotic cells (MC: 0.36 ± 0.31%o for S. squalirostris and 0.08 ± 0.05 %o for L. mystacinus) and higher number of eosinophils (E: 3.45 ± 1.75 %o for S. squalirostris and 7.64 ± 0.98 %o for L. mystacinus) in individuals from the RF than in individuals from the RS (MC: 2.55 ± 0.74 %o for S. squalirostris and 1.87 ± 0.72%o for L. mystacinus; and E: 0.13 ± 0.09 for S. squalirostris and 3.20 ± 0.80 for L. mystacinus). Overall, our results demonstrate the existence of apparent differences in sensitivity between species in a series of sublethal responses to short-term exposure in RF after the application of Lambda-cyhalothrin. We suggest that the integral use of biological endpoints (development and growth) together with biomarkers (cholinesterase, GST, and blood cell parameters) may be a promising integral procedure for investigating pesticide exposure in wild frog populations.
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