High stoichiometric food quality increases moulting organism vulnerability to pollutant impacts: An experimental test with Gammarus fossarum (Crustacea: Amphipoda)

Arce-Funck, Julio; Crenier, Clément; Danger, Michaël; Billoir, Élise; Usseglio‐Polatera, Philippe; Felten, Vincent

doi:10.1016/j.scitotenv.2018.07.227

Cited by 15 publications

(6 citation statements)

References 66 publications

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“…Finally, it must be noted that in contrast to the observed stimulation of G. fossarum growth, our results also showed a low but significant negative effect of P on organisms’ survival. Such an effect has already been observed in another study (Arce-Funck et al, 2018). It was proposed that higher growth rates generated by higher resource quality increases molting frequency.…”

Section: Discussionsupporting

confidence: 78%

Interactive Impacts of Silver and Phosphorus on Autotrophic Biofilm Elemental and Biochemical Quality for a Macroinvertebrate Consumer

et al. 2019

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Autotrophic biofilms are complex and fundamental biological compartments of many aquatic ecosystems. In particular, these biofilms represent a major resource for many invertebrate consumers and the first ecological barrier against toxic metals. To date, very few studies have investigated the indirect effects of stressors on upper trophic levels through alterations of the quality of biofilms for their consumers. In a laboratory study, we investigated the single and combined effects of phosphorus (P) availability and silver, a re-emerging contaminant, on the elemental [carbon (C):nitrogen (N):P ratios] and biochemical (fatty acid profiles) compositions of a diatom-dominated biofilm initially collected in a shallow lake. We hypothesized that (1) P and silver, through the replacement of diatoms by more tolerant primary producer species, reduce the biochemical quality of biofilms for their consumers while (2) P enhances biofilm elemental quality and (3) silver contamination of biofilm has negative effects on consumers life history traits. The quality of biofilms for consumers was assessed for a common crustacean species, Gammarus fossarum , by measuring organisms’ survival and growth rates during a 42-days feeding experiment. Results mainly showed that species replacement induced by both stressors affected biofilm fatty acid compositions, and that P immobilization permitted to achieve low C:P biofilms, whatever the level of silver contamination. Gammarids growth and survival rates were not significantly impacted by the ingestion of silver-contaminated resource. On the contrary, we found a significant positive relationship between the biofilm P-content and gammarids growth. This study underlines the large indirect consequences stressors could play on the quality of microbial biomass for consumers, and, in turn, on the whole food web.

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Section: Discussionsupporting

confidence: 78%

Interactive Impacts of Silver and Phosphorus on Autotrophic Biofilm Elemental and Biochemical Quality for a Macroinvertebrate Consumer

et al. 2019

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“…This could be related to the low stoichiometric quality of Cs litter, which could enhance survival of invertebrates exposed to toxic substances. For example, mortality of G. fossarum exposed to cadmium was greater when the animals were fed higher quality litter, possibly because of increased moulting and metabolism, which would have led to higher sensitivity and toxic uptake rate (Arce-Funck et al, 2018). In our experiment, however, Qr litter (also of low quality) caused similar mortality to that of Ag litter (of high quality).…”

Section: Fungicide Exposure Leads To Lethal Effects On Invertebratesmentioning

confidence: 46%

A common fungicide impairs stream ecosystem functioning through effects on aquatic hyphomycetes and detritivorous caddisflies

Cornejo

Pérez

Alonso

et al. 2020

Journal of Environmental Management

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Fungicides can reach streams through runoff or adhered to leaf litter, and have the potential to adversely affect processes such as litter decomposition and associated communities. This study investigated the effects of chlorothalonil, a widely used fungicide, on litter decomposition, detritivorous invertebrates (larvae of the insect Sericostoma pyrenaicum) and aquatic hyphomycetes (AHs), using stream microcosms. We considered the single and combined effects of two exposure modes: waterborne fungicide (at two concentrations: 0.125 μg L À 1 and 1.25 μg L À 1) and litter previously sprayed with the fungicide (i.e., pre-treated litter, using the application dose concentration of 1250 μg L À 1). We also assessed whether fungicide effects on invertebrates, AHs and decomposition varied among litter types (i.e., different plant species), and whether plant diversity mitigated any of those effects. Invertebrate survival and AH sporulation rate and taxon richness were strongly reduced by most combinations of fungicide exposure modes; however, invertebrates were not affected by the low waterborne concentration, whereas AHs suffered the highest reduction at this concentration. Total decomposition was slowed down by both exposure modes, and microbial decomposition was reduced by litter pre-treatment, while the waterborne fungicide had different effects depending on plant species. In general, with the exception of microbial decomposition, responses varied little among litter types. Moreover, and contrary to our expectation, plant diversity did not modulate the fungicide effects. Our results highlight the severity of fungicide inputs to streams through effects on invertebrate and microbial communities and ecosystem functioning, even in streams with well-preserved, diverse riparian vegetation.

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“…From the measure of the interactive effect size (η 2 ), i.e., larger η 2 meaning greater interactive effect, the significant interaction of media P accounted for 47% and The reduction in productivity and growth of S. acutus due to the interaction effect of media P and metal exposure could have significant impacts on food availability for grazers in freshwater ecosystems. Compared to similar stoichiometric studies, 5,6,14,22 this is the first study to account for these responses with significant interaction of media P with Cd, As, and Cd/As mix . The interaction effects may be due to a number of factors including direct/indirect reduction in the activity of enzymes that sequester and/or detoxify toxic metals since P is known to play an important role in the uptake of essential trace metals that are enzyme cofactors (e.g., Zn), and a number of these essential trace metals (e.g., Fe, Cu, Zn) are known to also limit the bioavailability and uptake of other nonessential toxic metals such as Cd and As.…”

Section: ■ Results and Discussionmentioning

confidence: 91%

“…There is increasing evidence that organisms experience interactive effects of contaminant stressors and food/media conditions including nutrient availability. , For example, in a study conducted by Arce-Funck et al, exposure of Gammarus fossarum to Cd and food resource with higher P concentration reduced survival rates and increased toxicity. Ieromina et al reported increased toxicity of imidacloprid to Daphnia magna fed nutrient-deficient algal food.…”

Section: Introductionmentioning

confidence: 99%

Trophic-Level Interactive Effects of Phosphorus Availability on the Toxicities of Cadmium, Arsenic, and Their Binary Mixture in Media-Exposed Scenedesmus acutus and Media and Dietary-Exposed Daphnia pulex

Awoyemi

Subbiah

Thompson

et al. 2020

Environ. Sci. Technol.

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Various anthropogenic activities simultaneously alter essential mineral nutrients and contaminant content in the environment. Depending on essential nutrient conditions, the uptake and effects of contaminants in exposed organisms may be altered. The addressing of ecological risk assessment (ERA) of contaminant mixtures has proven difficult. Furthermore, most assessments involving single contaminant exposures do not consider the interaction of essential nutrients on toxicological end points. Hypotheses for toxicological effects of cadmium (Cd), arsenic (As), and their binary mixture (Cd/Asmix) include alteration under varying dietary and media phosphorus (P) conditions. However, interactive effects and effect size (η2) are largely unknown. Here, we investigated the toxicities of Cd-, As-, and Cd/Asmix-treated media and diets on Scenedesmus acutus (a primary producer) and Daphnia pulex (a primary consumer), under varied media and dietary P conditions [low (LP), median (MP), and optimum (COMBO)]. Our results showed significant (p < 0.05) interactive effects and concentration dependent growth inhibition of S. acutus. The toxicity (at day 7) of Cd against S. acutus was 2×, 11×, and 4× that of As in LP, MP, and COMBO conditions, respectively, while the joint toxicity effects of Cd/Asmix were partially additive in LP and COMBO, and synergistic in MP media. Furthermore, acute lethal toxicity (96 h) of Cd in D. pulex was ∼60× that of As, while Cd/Asmix joint toxicity was synergistic. Chronic toxicity (14 d) in D. pulex showed significant (p < 0.05) interaction of As and P-availability on survival, reproduction, and behavior (distance moved, velocity, acceleration and mobility), while Cd and P availability showed significant interactive effect on rotational behavior. Dose response effects of Cd, As, and Cd/Asmix in S. acutus and D. pulex were either monophasic or biphasic under varying nutrient conditions. This study provides empirical evidence of the interactive effects of media/dietary P and toxic metals (Cd, As, and Cd/Asmix) at environmentally relevant concentrations, emphasizing the need for consideration of such interactions during ERA.

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High stoichiometric food quality increases moulting organism vulnerability to pollutant impacts: An experimental test with Gammarus fossarum (Crustacea: Amphipoda)

Cited by 15 publications

References 66 publications

Interactive Impacts of Silver and Phosphorus on Autotrophic Biofilm Elemental and Biochemical Quality for a Macroinvertebrate Consumer

Interactive Impacts of Silver and Phosphorus on Autotrophic Biofilm Elemental and Biochemical Quality for a Macroinvertebrate Consumer

A common fungicide impairs stream ecosystem functioning through effects on aquatic hyphomycetes and detritivorous caddisflies

Trophic-Level Interactive Effects of Phosphorus Availability on the Toxicities of Cadmium, Arsenic, and Their Binary Mixture in Media-Exposed Scenedesmus acutus and Media and Dietary-Exposed Daphnia pulex

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