Organochlorines in the Vaccarès Lagoon trophic web (Biosphere Reserve of Camargue, France)

Roche, Hélène; Vollaire, Y.; Peršić, Ana; Buet, Astrid; Ribeiro, Ciro Alberto de Oliveira; Coulet, Eric; Banas, Damien; Ramade, François

doi:10.1016/j.envpol.2009.03.016

Cited by 32 publications

(17 citation statements)

References 72 publications

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“…In the literature, two main processes leading to the accumulation of contaminants in aquatic organisms are evoked: direct partitioning from the abiotic environment (bioconcentration) and ingestion of contaminated dietary sources (trophic transfer) (Borga et al, 2004;Roche et al, 2009). If food is the dominant route of exposure and if the absorption rate exceeds the elimination rate, biomagnification will occur.…”

Section: Introductionmentioning

confidence: 99%

Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

Coat¹,

Monti²,

Legendre³

et al. 2011

Environmental Pollution

122

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This paper determines the bioaccumulation and transfer processes of organochlorine pesticides within the stream food web in Guadeloupe (Caribbean). ABSTRACTConcentrations of organochlorine pesticides and stable isotope ratios of nitrogen and carbon were measured in a tropical freshwater ecosystem to evaluate the contamination level of biota and examine the bioaccumulation patterns of pollutants through the food web. Chemical analyses showed a general and heavy contamination of the entire food web. They revealed the strong accumulation of pollutants by juveniles of diadromous fishes and shrimps, as they re-enter the river. The role of ecological factors in the bioaccumulation of pesticides was evaluated. Whereas the most persistent pollutants (chlordecone and monohydro-chlordecone) were related to the organisms diet and habitat, bioaccumulation of β-HCH was only influenced by animal lipid content. The biomagnification potential of chlordecone through the food chain has been demonstrated. It highlighted the importance of trophic transfer in this compound bioaccumulation process. In contrast, bioconcentration by passive diffusion from water seemed to be the main exposure route of biota to β-HCH.

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Section: Introductionmentioning

confidence: 99%

Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

Coat¹,

Monti²,

Legendre³

et al. 2011

Environmental Pollution

122

View full text Add to dashboard Cite

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“…When organisms are fed on by predators, the chemical concentrates from one trophic level to the next, thus leading to biomagnification causing severe ecological consequences (Newman and Unger 2003). Numerous articles have shown that aquatic organisms bioaccumulate lipophilic pollutants, notably organochlorines, and some of them showed a biomagnification though trophic transfer (Kidd et al 1995;Rypel et al 2007;Roche et al 2009). Although endosulfan has already banned due to its persistence capability, it will still cause toxic effects at ecological levels.…”

Section: Discussionmentioning

confidence: 99%

Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure

Svartz

Marino

Ronco

et al. 2015

Arch Environ Contam Toxicol

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Agroecosystems are usually polluted with a wide variety of contaminants with pesticides being very frequently detected. Endosulfan, an organochlorine pesticide, has been shown to cause both lethal and sublethal effects on aquatic organisms such as amphibians and especially on its early developmental stages. In this context, the aim of this study was to evaluate the uptake of environmentally relevant concentrations of endosulfan and its correlation with differential sensitivity in the early development stages of the common South American toad, Rhinella arenarum. Embryos and larvae were exposed to sublethal concentrations of endosulfan for several periods of exposures. According to the developmental stage at which they were exposed, the uptake rate was different. Bioconcentration factors (BCFs) for embryos significantly decreased with exposure time and concentration (p < 0.05) reaching a BCF of ≤1679 for embryos at 96 h of exposure to 0.001 mg endosulfan L(-1). BCFs for larvae significantly increased with exposure time (p < 0.05) obtaining a maximum of 40 at 504 h. In our previous study, we reported that embryos were less sensitive to the effects of endosulfan than larvae, which is in line with the main tendency of embryos to bioconcentrate endosulfan as observed in this study.

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“…Although a longitudinal study of the same species at the same locations would be required to test this hypothesis, decreasing PCB concentrations have been observed in Rhône River sediments in previous decades (Liber et al 2019), and water analyses conducted by the National Nature Protection Society have not detected PCBs and OCPs in the Fumemorte canal since 2011 (Cheiron 2019). Moreover, organochlorine contamination across food webs tended to diminish through time in the Vaccarès lagoon (Roche et al 2009b), into which the Fumemorte canal flows. Exotic red swamp crayfish ( Procambarus clarkii ), the main prey of European pond turtles in the Camargue (Ottonello et al 2005), were not contaminated by POPs in 2019 (i.e., <LOQ, with LOQ ranging 0.9–1.98 ng/g dry wt; A. Goutte, EPHE, PSL Research University, unpublished data).…”

Section: Discussionmentioning

confidence: 99%

“…Mean flux over the 2011 to 2016 period was 14 kg/yr for PCB‐180 in suspended particulate matter at the outlet of the Rhône River (Poulier et al 2019). Previous studies in the Camargue confirmed that both birds (Berny et al 2002) and fish (Roche et al 2002, 2003, 2009b) are exposed to OCPs and PCBs.…”

Section: Introductionmentioning

confidence: 88%

Determinants of Legacy Persistent Organic Pollutant Levels in the European Pond Turtle (Emys orbicularis) in the Camargue Wetland, France

Burkart

Olivier

Lourdais

et al. 2021

Enviro Toxic and Chemistry

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Many banned persistent organic pollutants (POPs) remain for decades in the aquatic environment and can have harmful effects on long-lived predators because of their high bioaccumulation and biomagnification potentials. We investigated the occurrence and levels of 18 polychlorinated biphenyls (PCBs) and 16 organochlorine pesticides in European pond turtles (n = 174) from April to July 2018 in the Camargue wetland, France. Although the Camargue was highly contaminated in previous decades, plasma occurrence and levels of POPs were very low: we were able to quantify only 3 of the 34 compounds we analyzed in >10% of the turtles. The burdens from POPs did not differ between males and females and were uncorrelated with sampling date and body mass. We observed differences in POP burdens between turtles from the 2 sampling sites. One possible explanation is that the sampling sites were in different agricultural hydraulic systems: plasma occurrence and levels were higher for PCB-52 and hexachlorobenzene in turtles captured in drainage channels and for PCB-153 at the site that receives irrigation. Finally, the occurrence and levels of PCB-153 in turtles increased with age, likely because of bioaccumulation and much higher exposure 20 to 30 yr ago than now.

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Organochlorines in the Vaccarès Lagoon trophic web (Biosphere Reserve of Camargue, France)

Cited by 32 publications

References 72 publications

Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure

Determinants of Legacy Persistent Organic Pollutant Levels in the European Pond Turtle (Emys orbicularis) in the Camargue Wetland, France

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