2000
DOI: 10.1016/s0141-1136(99)00083-5
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Trophic accumulation and depuration of mercury by blue crabs (Callinectes sapidus) and pink shrimp (Penaeus duorarum)

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Cited by 35 publications
(23 citation statements)
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“…Genetic resistance to inorganic Hg has been reported for this species, which may be related to detoxification and storage (by way of metallothionein-like proteins or metal-rich granules) or to accumulation and subsequent loss of metal through autotomy of caudal segments (Klerks and Bartholomew 1990;Horne 2003a, 2003b). Penaeid shrimp, fed field-exposed Hg-contaminated fish tissue, accumulated tissue Hg concentrations after 2 weeks of feeding that were approximately 17 times greater (approximately 1.7 lg g -1 wet wt) than for grass shrimp fed contaminated worms in the present work (Evans et al 2000).…”
Section: Discussioncontrasting
confidence: 41%
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“…Genetic resistance to inorganic Hg has been reported for this species, which may be related to detoxification and storage (by way of metallothionein-like proteins or metal-rich granules) or to accumulation and subsequent loss of metal through autotomy of caudal segments (Klerks and Bartholomew 1990;Horne 2003a, 2003b). Penaeid shrimp, fed field-exposed Hg-contaminated fish tissue, accumulated tissue Hg concentrations after 2 weeks of feeding that were approximately 17 times greater (approximately 1.7 lg g -1 wet wt) than for grass shrimp fed contaminated worms in the present work (Evans et al 2000).…”
Section: Discussioncontrasting
confidence: 41%
“…Data that did not fit a normal distribution were analyzed using Spearman rank correlation (r s ) AE-203 Hg% by field-collected shrimp fed laboratorycontaminated amphipod prey (exposed to approximately 0.005 lM dissolved Hg) was greater (approximately 61-78 %) than the maximum value observed for Hg pre-exposed shrimp (Seebaugh and Wallace 2009). Hg assimilation by penaeid shrimp fed field-contaminated fish tissue was approximately 72 % (Evans et al 2000). There was, however, overlap between the range of AE-109 Cd% values (approximately 54-75 %) for field-collected shrimp after consumption of amphipods (exposed to approximately 0.025 lM dissolved Cd) and values in the present study (Seebaugh and Wallace 2009).…”
Section: Discussionmentioning
confidence: 99%
“…Contribution from environmental contamination (namely the dissolved fraction) seems low, reflected by the reduced mercury burden in gill tissue. It is known that mercury biomagnifies along food webs (Watras and Bloom, 1992;Lawson and Mason, 1998) and that higher trophic level organisms accumulate mercury mostly from food (Evans et al, 2000), hence even in low contamination areas dietary items will be enriched in mercury, and mainly in organic form, which is the most prone to bioaccumulate (Lawson and Mason, 1998).…”
Section: Discussionmentioning
confidence: 99%
“…This species is one of the most important and exploited natural resources in temperate estuarine systems, and therefore represent a major pathway for Human contamination. Most of the previous research on this species consist of laboratory studies, focusing on mercury mediated osmoregulatory impairment (Péqueux et al, 1996), the combined effects of salinity and pH on the bioaccumulation of mercury (Laporte et al, 1997) or feeding experiments using mercury contaminated food (Evans et al, 2000). Studies on a different decapod crustacean, the blue crab, focused on the transport mechanisms and fluxes of mercury across the membranes (gills and intestine) and suggest that inorganic and organic mercury uptake into the gills and intestine of this invertebrate is by a variety of pathways, both active and passive Laporte et al, 2002).…”
Section: Introductionmentioning
confidence: 99%
“…Major sources of human exposure to Hg are primarily from eating high levels of marine fish or inland fish raised in waters contaminated by the past industrial activities, such as chlorine production [32,33] and chronic inhalation of Hg gas associated with metal ore mining and processing (e.g. gold).…”
Section: Implication Of Environmental Factors In Autismmentioning
confidence: 99%