Individual and combined effects of organophosphate and carbamate pesticides on the cricket frog Fejervarya limnocharis

Nataraj, Makkimane B.; Krishnamurthy, S. V.

doi:10.1007/s10653-019-00418-z

Cited by 12 publications

(5 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the pesticide residue levels were lower than the established limits for water for human consumption according to the World Health Organization (WHO, 2011). However, the presence of multiple pesticide residues in aquatic environments, which may interact among them and with other contaminants and/or physicochemical characteristics, alert about the harmful effects on the health of amphibians (Nataraj & Krishnamurthy, 2020; Sparling et al, 2001). Moreover, they may constitute a serious risk (until the present, unevaluated in this region) for human health (Pascale & Laborde, 2020).…”

Section: Discussionmentioning

confidence: 99%

Water and sediment quality of an agro‐industrial area through different approaches: Physicochemical parameters and ecotoxicity with amphibians

Peluso

Aronzon

Chehda

et al. 2023

Water Environment Research

View full text Add to dashboard Cite

Amphibians are subject to several stressors in the aquatic and terrestrial environments, and human activities have profoundly impacted this vertebrate group. The aim of the present study was to analyze physicochemical parameters, metals and pesticide residues, and the toxicity of water and sediment samples from an environment with high agricultural activity (S1: Salto stream; S2: drainage channel downstream from S1) by means of bioassays using Rhinella arenarum (Amphibia: Anura) larvae. Metals and pesticides were analyzed in water and sediment samples by fluorescence spectrometer of X‐ray by total reflection and ultra‐high‐performance liquid chromatography‐MS/MS, respectively. For lethality bioassays, 10 larvae (in triplicate) were exposed for 504 h to water and sediment samples. Also, 50 larvae were exposed for 96 h (in triplicate) to water and sediment samples for the evaluation of biomarkers of neurotoxicity, oxidative stress, and genotoxicity. Twenty‐six different pesticides (mainly herbicides) were detected in both sites, and Cu, Zn, and Pb exceeded the limit for protection of aquatic life. Lethality was observed in larvae exposed to water and sediment samples from both sites at chronic exposure. Oxidative stress was observed in larvae exposed to both sites. In larvae exposed to samples from S1, alterations in the neurotoxicity biomarkers were observed. These results alert about the degradation of the sites and highlight the need to monitor and control the use of pesticides. Practitioner Points Twenty‐six pesticides were detected in water and sediment from Salto stream basin. Significant mortality was observed in larvae exposed to samples from all sites. Sublethal effects were observed mainly in larvae exposed to samples from Salto stream. The degraded quality can be associated with the agricultural activities of the area.

show abstract

Section: Discussionmentioning

confidence: 99%

Water and sediment quality of an agro‐industrial area through different approaches: Physicochemical parameters and ecotoxicity with amphibians

Peluso

Aronzon

Chehda

et al. 2023

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…Our data however have also shown cases of intoxication from the use of agricultural products. Farmers are known to use excessive amounts of organophosphate in paddy fields, targeting a wide range of insect pests that has an adverse impact on amphibians (Nataraj and Krishnamurthy 2020), a preferred diet of Indian Spotted Eagle during the breeding season (Gurung et al . 2019).…”

Section: Discussionmentioning

confidence: 99%

Human-induced mortality an overlooked threat for raptors in Nepal

Subedi,

Pérez-García,

Gurung

et al. 2023

Bird Conservation International

View full text Add to dashboard Cite

Summary Raptors play a unique role in ecosystem services and are regarded as effective indicators of ecosystem health. In recent years, varieties of anthropogenic factors have threatened the majority of raptor species worldwide. Nepal is considered a global hotspot for threatened and declining raptor species, but there is limited information on the direct human threats to the raptor populations living in the country. In this paper, we identify important anthropogenic threats to raptors in Nepal based on raptor mortality data collected by powerline surveys and from monitoring of GPS-tagged raptors, complete various reports, and social media. We found that powerlines, poisoning, and persecution, mainly shooting, are significant threats to raptors in Nepal that were largely overlooked previously. We report 54 electrocuted raptors affecting eight species, 310 poisoned raptors of 11 species, and five persecuted raptors of four species; among them vultures are the most affected (>88%). Based on our findings, to safeguard the future of Nepal’s raptors, we propose the retrofitting of power poles and the use of flight diverters on powerlines in the most affected areas to reduce raptor interactions with powerlines, as well as an effective conservation education programme to prevent the use of unintentional poisoning.

show abstract

“…According to several previous studies, the range of values for each physicochemical parameter is known. Based on Nataraj et al [33], the toxicity test on F. limnocharis tadpoles was carried out at a temperature of 24.5 to 26.5°C and the pH value ranged from 6.6 to 6.9, while Nataraj & Krishnamurthy [34] mentions that the temperature range was 26.5 ± 0.8°C with a pH of 6.5 to 7.6.…”

Section: Physico-chemical Parametersmentioning

confidence: 99%

Effect of Acute Toxicity of Commercial Organophosphate Insecticide Based on Chlorpyrifos on Fejervarya limnocharis Tadpoles (Anura: Dicroglossidae)

Ramadani

Marhendra

Wiadnya

et al. 2022

J.Trop.Life.Science

View full text Add to dashboard Cite

Organophosphate pesticides, especially chlorpyrifos, are one of the most widely used insecticides in agriculture, but their toxicity and potential sensitivity effects on Anura, especially Fejervarya limnocharis are still unknown. The purpose of this investigation is to study F. limnocharis (Anura: Dicroglossidae) tadpole sensitivity to lethal (survivability) and sublethal effects (morphological alterations and swimming activity) of chlorpyrifos in Dursban 200EC commercial formula under acute exposure. An acute toxicity test was carried out on ten tadpoles (Gosner 25) in each repetition. The sample was obtained from artificial reproduction by injecting the Trial Batch 2000 IU hCG by Kings Lab. The acute toxicity testing consisted of three replicates with a chlorpyrifos concentration of 0; 0.4; 0.8; 1; 2; 4; and 8 µg/L. Physico-chemical parameters, mortality, morphological, and swimming alterations of each concentration were observed at 24th, 48th, 72nd, and 96th hours. The LC50 of chlorpyrifos for F. limnocharis tadpoles was 2.86 µg/L. The percentage of survivability F. limnocharis tadpoles decreased after exposure to chlorpyrifos above 1µg/L, while morphological alterations were observed in 2 µg/L and 4 µg/L after 48th hours exposure, and the swimming alterations have occurred at 24th hours in 1; 2; 4 and 8 µg/L. Morphological alterations were observed including asymmetrical body shape, edema, and abnormal tail shape. Based on the LC50 value, commercial chlorpyrifos has high-level toxicity on F. limnocharis tadpoles.Keywords: Acute, Chlorpyrifos, Dursban 200 EC, Fejervarya limnocharis, Tadpoles

show abstract

Individual and combined effects of organophosphate and carbamate pesticides on the cricket frog Fejervarya limnocharis

Cited by 12 publications

References 37 publications

Water and sediment quality of an agro‐industrial area through different approaches: Physicochemical parameters and ecotoxicity with amphibians

Water and sediment quality of an agro‐industrial area through different approaches: Physicochemical parameters and ecotoxicity with amphibians

Human-induced mortality an overlooked threat for raptors in Nepal

Effect of Acute Toxicity of Commercial Organophosphate Insecticide Based on Chlorpyrifos on Fejervarya limnocharis Tadpoles (Anura: Dicroglossidae)

Contact Info

Product

Resources

About