Accumulation of organic and inorganic contaminants in shellfish collected in estuarine waters near Pensacola, Florida: Contamination profiles and risks to human consumers

Karouna‐Renier, Natalie K.; Snyder, Richard A.; Allison, Jeffrey G.; Wagner, Matthew E.; Rao, K. Ranga

doi:10.1016/j.envpol.2006.04.035

Cited by 64 publications

(27 citation statements)

References 17 publications

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“…Most health impacts caused by Hg come from its presence in the diet, and human exposure through this process has been well studied [12], in particular after consumption of fish [13][14][15], crustaceans [16,17], birds [18], game animal meat [19], mushrooms [20], vegetables [21], and other foodstuffs. As a result, Hg has become an important pollutant for populations whose main protein source comes directly from nearby ecosystems [22].…”

Section: Introductionmentioning

confidence: 99%

Relationship Between Localization of Gold Mining Areas and Hair Mercury Levels in People from Bolivar, North of Colombia

Olívero-Verbel

Caballero-Gallardo

Negrete-Marrugo

2011

Biol Trace Elem Res

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Mercury (Hg) is a heavy metal that, once in the environment, is bioaccumulated and biomagnified through food chain impacting ecosystems. The aim of this study was to evaluate total Hg (T-Hg) concentrations in individuals along Cauca and Magdalena Rivers in Colombia, where most gold mining activities take place. A total of 1,328 hair samples were collected and analyzed for T-Hg using atomic absorption spectroscopy. T-Hg concentrations ranged from 0.01 to 20.14 μg/g. Greatest levels were detected in La Raya (5.27 ± 0.32 μg/g), Achi (2.44 ± 0.22 μg/g), and Montecristo (2.20 ± 0.20 μg/g), places that are located near gold mines. Concentrations decreased with the distance from main mining areas. Only 0.75% of the individuals had T-Hg levels above 10 μg/g. Men had significantly higher T-Hg levels than women, and correlation analysis revealed moderately weak but significant relationships between T-Hg and weight (R = 0.111, P < 0.001), stature (R = 0.111, P < 0.001), and age (R = 0.073, P = 0.007). However, T-Hg concentrations did not vary according to fish consumption frequency. Subjective health survey showed no Hg-related signs or symptoms within studied sample. However, studies are necessary to detect neurological damage linked to the metal. Changing technologies to Hg-free mining, monitoring, and educational programs are necessary to protect health of people living near Colombian rivers.

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Section: Introductionmentioning

confidence: 99%

Relationship Between Localization of Gold Mining Areas and Hair Mercury Levels in People from Bolivar, North of Colombia

Olívero-Verbel

Caballero-Gallardo

Negrete-Marrugo

2011

Biol Trace Elem Res

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“…The accumulation of hydrophobic organic chemicals by invertebrates has proven useful in environmental monitoring for polychlorinated biphenyls (PCBs) [1], organochlorine pesticides (OCPs) [2][3][4], polychlorinated benzo-p-dioxins and furans (PCDD/F) [1,5] and organophosphate insecticides (OPs) [3,6,7]. Many of these chemicals are known to cause sublethal effects in aquatic organisms, including reproductive impairment and decreases in hatching success [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Accumulation of current‐use and organochlorine pesticides in crab embryos from northern California, USA

Smalling

Morgan

Kuivila

2010

Enviro Toxic and Chemistry

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Invertebrates have long been used as resident sentinels for assessing ecosystem health and productivity. The shore crabs, Hemigrapsus oregonensis and Pachygrapsus crassipes, are abundant in estuaries and beaches throughout northern California, USA and have been used as indicators of habitat conditions in several salt marshes. The overall objectives of the present study were to conduct a lab-based study to test the accumulation of current-use pesticides, validate the analytical method and to analyze field-collected crabs for a suite of 74 current-use and legacy pesticides. A simple laboratory uptake study was designed to determine if embryos could bioconcentrate the herbicide molinate over a 7-d period. At the end of the experiment, embryos were removed from the crabs and analyzed by gas chromatography/mass spectrometry. Although relatively hydrophilic (log K(OW) of 2.9), molinate did accumulate with an estimated bioconcentration factor (log BCF) of approximately 2.5. Following method validation, embryos were collected from two different Northern California salt marshes and analyzed. In field-collected embryos 18 current-use and eight organochlorine pesticides were detected including synthetic pyrethroids and organophosphate insecticides, as well as DDT and its degradates. Lipid-normalized concentrations of the pesticides detected in the field-collected crab embryos ranged from 0.1 to 4 ppm. Pesticide concentrations and profiles in crab embryos were site specific and could be correlated to differences in land-use practices. These preliminary results indicate that embryos are an effective sink for organic contaminants in the environment and have the potential to be good indicators of ecosystem health, especially when contaminant body burden analyses are paired with reproductive impairment assays.

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“…Edible crabs may take up and retain human-virulent bacterial contaminants (1,10,11,13) and organic and inorganic pollutants from ambient water and sediments at levels posing risks to consumers (12). There is no published information on contamination of crabs with Cryptosporidium, a waterborne pathogen commonly reported from coastal waters (3,6).…”

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confidence: 99%

Risk of Handling as a Route of Exposure to Infectious Waterborne Cryptosporidium parvum Oocysts via Atlantic Blue Crabs ( Callinectes sapidus )

Graczyk

McOliver

Silbergeld

et al. 2007

Appl Environ Microbiol

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Commercial Atlantic blue crabs (Callinectes sapidus) were exposed to 2.0 ؋ 10 4 infectious waterborne oocysts of Cryptosporidium parvum. The study demonstrated that blue crabs can transfer C. parvum oocysts to persons involved in handling or preparing crabs and that they may contaminate other surfaces or products during storage.Cryptosporidium parvum is a human enteric pathogen that can be transmitted very efficiently via the fecal-oral route (i.e., autoinfection and person-to-person) and indirectly via contact with contaminated water, including consumption and recreational activities (5). Edible crabs may take up and retain human-virulent bacterial contaminants (1, 10, 11, 13) and organic and inorganic pollutants from ambient water and sediments at levels posing risks to consumers (12). There is no published information on contamination of crabs with Cryptosporidium, a waterborne pathogen commonly reported from coastal waters (3, 6). However, our previous study demonstrated mechanical passage of C. parvum oocysts via handling of fish caught in urban watersheds to the hands of recreational anglers (16). The purposes of the present study were to determine if commercially harvested Atlantic blue crabs (Callinectes sapidus), which are widely consumed, can serve as a vehicle for infectious waterborne oocysts of C. parvum and if the handling of crabs collected from Cryptosporidium-contaminated water can result in oocyst transfer to the handler's hands.A 120-liter-capacity marine tank was filled with 4 liters of artificial seawater of 12-ppt salinity (9) to which 2.0 ϫ 10 4 C. parvum oocysts were added. The oocysts were tested and found to be infectious to neonatal BALB/c mice (6). C. parvum oocysts were eluted from 12 blue crabs (C. sapidus) purchased from a local market by sprinkling 0.5 liter of the eluting fluid (4) on the crabs' surfaces and then collecting all the fluid into a single plastic bottle. The crabs were alive and actively ventilating with their mouthpart appendages during the experiments. The crabs were left in the tank for 24 h, and then the oocysts were eluted from the individual surfaces of six randomly selected crabs as described above and the fluid was collected into six corresponding plastic bottles. The oocysts were eluted collectively from the surfaces of the remaining crabs, and the fluid was collected into a single plastic bottle. The crabs were handled by a single person, and the hands of that person were washed in a plastic ziplock bag (16) containing 0.5 liter of eluting fluid (4). The tank water was collected into a plastic container, and the tank was washed with 1 liter of the eluting fluid (4), which was added to the container. The samples were processed by a cellulose acetate membrane filter dissolution method (4), and the recovered material was tested by combined fluorescence in situ hybridization and a direct immunofluorescent antibody assay for C. parvum (7-9).

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Accumulation of organic and inorganic contaminants in shellfish collected in estuarine waters near Pensacola, Florida: Contamination profiles and risks to human consumers

Cited by 64 publications

References 17 publications

Relationship Between Localization of Gold Mining Areas and Hair Mercury Levels in People from Bolivar, North of Colombia

Relationship Between Localization of Gold Mining Areas and Hair Mercury Levels in People from Bolivar, North of Colombia

Accumulation of current‐use and organochlorine pesticides in crab embryos from northern California, USA

Risk of Handling as a Route of Exposure to Infectious Waterborne Cryptosporidium parvum Oocysts via Atlantic Blue Crabs ( Callinectes sapidus )

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