Effect of predator stress and malathion on tadpoles of Indian skittering frog

Giri, Anirudha; Yadav, Sushama Singh; Giri, Sarbani; Sharma, G.D.

doi:10.1016/j.aquatox.2011.11.008

Cited by 27 publications

(14 citation statements)

References 48 publications

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“…It is known that predator cues can have profound effects on the behavior, abundance, and population structure of aquatic prey organisms (Chivers and Smith 1998). Moreover, recent studies found that predator cues can interact with a variety of chemicals such as metals (Barry 2011) and pesticides (Qin et al 2011;Giri et al 2012;Janssens and Stoks 2013b), thus altering their toxic effects on aquatic prey organisms. These findings raise concern that predator cues could play an important role in the process of how contaminants exert their effects on aquatic prey organisms.…”

mentioning

confidence: 99%

Impact of Predator Cues on Responses to Silver Nanoparticles in Daphnia carinata

Qin

Xiong

Tang

et al. 2015

Arch Environ Contam Toxicol

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The past decades have witnessed a boom in nanotechnology that has led to increasing production and application of silver nanoparticles (AgNPs) in the textile industry due to their antimicrobial properties. Increase in the manufacture and use of NPs inevitably has resulted in their increased release into aquatic environments resulting in the exposure of organisms living in these environments. Recently, the risk of exposure to NPs and the potential interaction with biological systems has received increasing attention. The present study investigated the potential effects of predator cues on the toxicity of environmentally relevant concentrations of AgNPs in Daphnia carinata at organismal and biochemical levels. The results of this study show that exposure to environmentally relevant concentrations of AgNPs can result in adverse effects on daphnids with 24- and 48-h LC50 values of 3.56 and 1.75 μg/L, respectively. Furthermore, significant inhibition of reproduction was observed at concentrations as low as 0.5 μg/L. Exposure to predator cues alone resulted in an increase in reproduction and inhibition of superoxide dismutase activity in daphnids. However, coexposure to predator cues interacted in an antagonistic manner with AgNPs with a 24-h LC50 value of 10.81 μg/L compared with 3.56 μg/L for AgNPs alone. In summary, AgNPs could pose risks to aquatic invertebrates at environmentally relevant concentrations. Interestingly, the presence of other factors, such as predator cues, moderated the effects of exposure to AgNPs. Therefore, there is a need to further investigate the potential interactions between NPs and biological factors that can modulate toxicity of NPs for application to the risk assessment of aquatic invertebrates.

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mentioning

confidence: 99%

Impact of Predator Cues on Responses to Silver Nanoparticles in Daphnia carinata

Qin

Xiong

Tang

et al. 2015

Arch Environ Contam Toxicol

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“…Studies analyzing genotoxicity in amphibians are rare, although the potential of xenobiotics to damage amphibian DNA has been reported by some authors (e.g., Clements et al 1997, Lajmanovich et al 2005, Chang et al 2009, Giri et al 2012, Singha et al 2014. This is possibly a very relevant area of research, but generalizations cannot be stated with current information.…”

Section: Water Pollutants and The Physiological Ecology Of Larvaementioning

confidence: 90%

Assessing the physiological sensitivity of amphibians to extreme environmental change using the stress endocrine responses

Navas¹,

Gomes²,

Domenico³

2017

Amphibian and Reptile Adaptations to the Environment

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“…In contrast, a number of laboratory studies have repeatedly shown that predator cues commonly make glyphosate and other pesticides more lethal to larval amphibians (Relyea and Mills , Relyea , , , Giri et al. , Yadav et al. ).…”

Section: Discussionmentioning

confidence: 99%

“…In fact, the presence of predator cues can cause some pesticides to become nearly 50 times more lethal, although not all species exhibit synergistic interactions (Relyea , , , Giri et al. , Yadav et al. ).…”

Section: Introductionmentioning

confidence: 99%

The interactive effects of predator stress, predation, and the herbicide Roundup

Relyea

2018

Ecosphere

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As the number of studies examining the effects of contaminants grows, ecologists are becoming increasingly aware that contaminants can interact with natural stressors (e.g., competition and predator cues) in their effects on nontarget animals. In amphibians, predator cues can make contaminants more lethal under laboratory conditions, but the opposite outcome has been observed under more natural conditions with stratified water columns; stratification causes more pesticide to be present near the surface while predator cues scare spring‐breeding amphibians down to the benthos. I examined whether this phenomenon also occurs in three species of summer‐breeding amphibians (Hyla versicolor, Rana clamitans, and Rana catesbeiana) that were raised in outdoor mesocosms. Specifically, I asked how amphibian survival was affected by multiple concentrations of a common herbicide (glyphosate; commercial name: Roundup), the herbicide combined with chemical cues from predators (caged larval dragonflies; Anax junius), and the herbicide combined with lethal predators. Environmentally relevant concentrations of the herbicide caused high rates of tadpole mortality, but this outcome was substantially reversed by the addition of predator cues. With lethal predators, the tadpoles experienced such high mortality that the herbicide caused no additional effect. Roundup also induced morphological changes in Hyla versicolor, and the induced traits were different from those induced by predators. Collectively, these results suggest that while predator cues can make pesticides less lethal when thermal stratification occurs, highly lethal predators can overwhelm these effects. Thus, the impacts of such contaminants can be dramatically different in environments that do or do not contain high‐risk predators.

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Effect of predator stress and malathion on tadpoles of Indian skittering frog

Cited by 27 publications

References 48 publications

Impact of Predator Cues on Responses to Silver Nanoparticles in Daphnia carinata

Impact of Predator Cues on Responses to Silver Nanoparticles in Daphnia carinata

Assessing the physiological sensitivity of amphibians to extreme environmental change using the stress endocrine responses

The interactive effects of predator stress, predation, and the herbicide Roundup

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