Ecotoxicological tools for the tropics: Sublethal assays with fish to evaluate edge-of-field pesticide runoff toxicity

Moreira, Susana; Moreira‐Santos, Matilde; Osten, Jaime Rendón-von; Silva, E.M. da; Ribeiro, Rui; Guilhermino, Lúcia; Soares, Amadeu M.V.M.

doi:10.1016/j.ecoenv.2010.04.007

Cited by 36 publications

(19 citation statements)

References 28 publications

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“…Behavioral abnormalities coinciding with inhibition of growth by pyrethroids have also been reported for bluegill (Little et al, 1993) and Sacramento splittail (Teh et al, 2005). Reduction in post-exposure feeding rates on live prey has also been observed in guppy, however, growth was not assessed in that study (Moreira et al, 2010). Although only a few studies simultaneously assessed the effects of pyrethroids on locomotion, food intake and growth in fish within the same experiment, the large body of evidence obtained for effects of pyrethroids on locomotion and growth individually suggests a strong link between locomotion impairment and growth impairment by pyrethroids, mediated through reduced foraging abilities.…”

Section: Description Of Aop For Growth Impairment By Pyrethroidsmentioning

confidence: 72%

Development and application of the adverse outcome pathway framework for understanding and predicting chronic toxicity: II. A focus on growth impairment in fish

et al. 2015

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Adverse outcome pathways (AOPs) organize knowledge on the progression of toxicity through levels of biological organization. By determining the linkages between toxicity events at different levels, AOPs lay the foundation for mechanism-based alternative testing approaches to hazard assessment. Here, we focus on growth impairment in fish to illustrate the initial stages in the process of AOP development for chronic toxicity outcomes. Growth is an apical endpoint commonly assessed in chronic toxicity tests for which a replacement is desirable. Based on several criteria, we identified reduction in food intake to be a suitable key event for initiation of middle-out AOP development. To start exploring the upstream and downstream links of this key event, we developed three AOP case studies, for pyrethroids, selective serotonin reuptake inhibitors (SSRIs) and cadmium. Our analysis showed that the effect of pyrethroids and SSRIs on food intake is strongly linked to growth impairment, while cadmium causes a reduction in growth due to increased metabolic demands rather than changes in food intake. Locomotion impairment by pyrethroids is strongly linked to their effects on food intake and growth, while for SSRIs their direct influence on appetite may play a more important role. We further discuss which alternative tests could be used to inform on the predictive key events identified in the case studies. In conclusion, our work demonstrates how the AOP concept can be used in practice to assess critically the knowledge available for specific chronic toxicity cases and to identify existing knowledge gaps and potential alternative tests.

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Section: Description Of Aop For Growth Impairment By Pyrethroidsmentioning

confidence: 72%

Development and application of the adverse outcome pathway framework for understanding and predicting chronic toxicity: II. A focus on growth impairment in fish

et al. 2015

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“…These insecticides have short residual activities and mistimed applications can result in inadequate control of larval populations (Stout et al ., ; Lanka et al ., ). Also, toxicity of pyrethroids to fish and nontarget aquatic invertebrates such as crustaceans are concerns (Coats et al ., ; Jarboe & Romaire, ; Amweg et al ., ; Barbee & Stout, ; Lao et al ., ; Moreira et al ., ; Palmquist et al ., ). Finally, heavy use of pyrethroids heightens the risk of development of insecticide resistance in RWW because resistance to insecticides such as aldrin has been recorded in this insect (Bowling, ).…”

Section: Introductionmentioning

confidence: 98%

Integrating flood depth and plant resistance with chlorantraniliprole seed treatments for management of rice water weevil, Lissorhoptrus oryzophilus (Coleoptera: Curculionidae)

2014

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Chlorantraniliprole seed treatments in rice provide effective suppression of rice water weevil populations in the United States; however, heavy reliance on prophylactic insecticide treatments as a sole strategy could destabilize management programs for this insect. The present research evaluated the compatibility of seed treatments with two other potential management tactics-plant resistance and shallow flooding-by conducting two split-plot experiments in 2009 and 2011. In both experiments, no substantial antagonism was found among the 3 different tactics. Statistical interactions in these experiments arose from the strong and persistent effects of chlorantraniliprole on larval densities rather than incompatibility of tactics. In 2009, weevil densities differed among varieties and were significantly lower on the cultivar "Jefferson." In 2011, weevil densities were reduced significantly in shallow-flooded plots compared to deep-flooded plots. Significant reductions in weevil numbers by chlorantraniliprole seed treatments, even at application rates 5 fold lower than commercially recommended rates, demonstrated the potential to reduce application rates of this highly potent larvicide. These latter results suggest that future studies on the relationship between chlorantraniliprole seed treatment rate and weevil fitness are warranted.

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“…The decrease in feeding rate because of contamination is expected to be fast, general, and quantifiable [2,[5][6][7]. It has been used as a toxicity test endpoint with cladocerans [6,8], amphipods [3,9], decapods [10,11], snails [12,13], polychaetes [7,14,15], midges [14,16], and fish [17,18]. If feeding inhibition occurs at contaminant concentrations close to those affecting growth or reproduction, then predicting ecosystem-level effects-taking into account only time-delayed extrapolations from population growth rates-can strongly underestimate risk.…”

Section: Introductionmentioning

confidence: 99%

A laboratory and in situ postexposure feeding assay with a freshwater snail

Correia

Ribeiro

Moreira‐Santos

2013

Enviro Toxic and Chemistry

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Contaminant-driven feeding inhibition has direct and immediate consequences at higher levels of biological organization, by depressing the population consumption and thus hampering ecosystem functioning (e.g., grazing, organic matter decomposition). The present study aimed at developing a short-term laboratory and in situ assay based on the postexposure feeding of the freshwater snail Theodoxus fluviatilis. A method to precisely quantify feeding rates was first developed, consisting of a 3-h feeding period, in darkness, on 150 defrosted nauplii of the brine shrimp Artemia franciscana. Postexposure feeding after a 48-h exposure to cadmium was approximately as sensitive as survival, with the median effective concentration (EC50) and median lethal concentration (LC50) being 85 mg/L and 102 mg/L, respectively, and the 20% effective concentration (EC20) and 20% lethal concentration (LC20) being 41 mg/L and 77 mg/L, respectively. Together, both effects at the LC20 reduced population consumption by 56%. In situ experiments at reference sites covering broad ranges of current velocity, hardness, conductivity, sediment organic matter content, and sediment particle size distribution revealed the influence of these abiotic conditions on postexposure feeding, in the absence of contamination, to be negligible. The effectiveness of the in situ assay was evaluated at 5 sites contaminated with acid mine drainage. Surviving organisms at the single partially lethal site (37% mortality) presented a 54% feeding inhibition relative to the reference, whereas the population consumption would be inhibited by 71%, confirming the integration of survival and feeding to be pertinent for estimating contaminant effects at higher levels of biological organization. Environ Toxicol Chem 2013;32:2144-2152. # 2013 SETAC

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Ecotoxicological tools for the tropics: Sublethal assays with fish to evaluate edge-of-field pesticide runoff toxicity

Cited by 36 publications

References 28 publications

Development and application of the adverse outcome pathway framework for understanding and predicting chronic toxicity: II. A focus on growth impairment in fish

Development and application of the adverse outcome pathway framework for understanding and predicting chronic toxicity: II. A focus on growth impairment in fish

Integrating flood depth and plant resistance with chlorantraniliprole seed treatments for management of rice water weevil, Lissorhoptrus oryzophilus (Coleoptera: Curculionidae)

A laboratory and in situ postexposure feeding assay with a freshwater snail

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