Bioaccumulation of zinc and lead in selected tissues and organs of the freshwater crab, Potamonautes warreni

Preez, H.H. Du; Steenkamp, V.E.; Schoonbee, H. J.

doi:10.1016/s0048-9697(05)80049-x

Cited by 13 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Comparing to the control treatment, molting events came early in larvae exposed to the lower ammonia concentrations (9 and 15 mg TAN L -1 ), whereas it were delayed in those exposed to the higher ammonia concentrations. The overtaking in molting events could be explained as a defense strategy for detoxification (Amin et al 2003;du Preez et al 1993), a fact that has been also registered in other crustacean species as Litopeneaus stylirostris (Mugnier et al 2008) and Penaeus monodon (Chen and Kou 1993). Similar results have been found when other crabs were exposed to other pollutants.…”

Section: Discussionsupporting

confidence: 64%

Ammonia toxicity in Southern King Crab (Lithodes santolla, Molina 1742) larvae

Diodato

Amin²,

Comoglio³

2019

Int Aquat Res

View full text Add to dashboard Cite

Effects of ammonia on zoea I of the Southern King Crab, Lithodes santolla (Decapoda, Lithodidae) were analyzed through acute (96 h) and chronic (29 days in total) assays (seven total ammonia nitrogen (TAN) concentrations: 9, 15, 25, 41, 67, 110, and 182 mg L-1 , plus control). The estimated LC 50-96 h was 107.97 mg TAN L-1 (1.93 mg NH 3-N L-1), while the safe level of ammonia was 10.79 mg TAN L-1 (0.19 mg NH 3-N L-1). Survival was highest in the three lowest ammonia concentrations throughout 96 h (93.3%, 90% and 93.3% in 9, 15 and 25 mg TAN L-1 , respectively). In chronic assays, the percentage of survival decreased along with the exposure time and the ammonia concentration. Zoeaes mean life time tended to increase almost gradually with the increment of ammonia concentration. Mean molting time from zoea I to II was 4.06 days, while it increased from zoea II to III, and zoea III to the post-larval stage (6.00 and 8.39 more days, respectively) with ammonia concentration. The percentage of individuals that have molted in every molt stage tended to decrease while ammonia concentration increased. Therefore, the results obtained in the present study bring new information about ammonia toxicity in early stages of development of crab Lithodes santolla, an important commercial species of the Beagle Channel.

show abstract

Section: Discussionsupporting

confidence: 64%

Ammonia toxicity in Southern King Crab (Lithodes santolla, Molina 1742) larvae

Diodato

Amin²,

Comoglio³

2019

Int Aquat Res

View full text Add to dashboard Cite

show abstract

“…The mean [Pb] in the crabs from the upstream areas (0.58 mg/kg, wm) was significantly greater than that from the downstream areas (0.26 mg/kg, wm; p \ 0.05; Table 2). The difference in habitat type (shallow hard-bottom intertidal or subtidal habitats) and diet (macroalgae, salt marsh grasses and small invertebrates) between the upstream and downstream areas could result in the observed differences in the [Pb] in the crabs (Maria et al 2012;Preez et al 1993). …”

Section: Biotamentioning

confidence: 99%

Distribution and bioaccumulation of lead in the coastal watersheds of the Northern Bohai and Yellow Seas in China

Kong

Luo

Lü

et al. 2014

Environ Geochem Health

View full text Add to dashboard Cite

In this study, the concentration of lead ([Pb]) in the surface water, sediments, soils and muscles of carp and crab in the upstream and downstream coastal watersheds along the Northern Bohai and Yellow Seas (NBYS) in China was investigated and the risks of Pb were evaluated. The mean [Pb] in the downstream water (2.62 lg/L) and sediments [24.5 mg/kg, dry mass (dm)] was greater than the Chinese seawater quality standard for class I (1 lg/L) and the regional background soil concentration (11.5 mg Pb/kg, dm), respectively. Approximately 37 % of the soils, mainly from the upstream regions, had [Pb] greater than the regional background concentration of 21.4 mg/kg, dm. The sites with relatively large [Pb] in the water, sediments and soils were located in the coastal watersheds of Tangshan and Huludao. The large enrichment factors in the sediments (2.41) and soils (2.22) suggested that human activities influenced the soils and sediments in this region more than in the other regions. Relatively large [Pb] was found in the crabs that were obtained from the upstream reaches of the Shuanglong and Daliao Rivers and the downstream reaches of the Luanhe and Liugu Rivers. Most of the crabs from the upstream regions contained greater [Pb] than the permissible limit for human consumption [0.3 mg/kg, wet mass (wm)]. The risk indices of the water, carp and crabs for humans were 0.002, 0.01 and 0.006, respectively. Based on the bioaccumulation factors, biota-sediment accumulation factors (BSAFs) and human risk indices, it was concluded that the human risks associated with crab were lower than those of carp despite the greater accumulation of Pb by the crabs from the water and sediments. Finally, the [Pb] in the sediments was significantly correlated with the [Pb] in the soils, 123Environ Geochem Health (2015) 37:491-506 DOI 10.1007 which indicated that the same sources of Pb were responsible for the [Pb] in the sediments and soils in the coastal watersheds of the NBYS in China.

show abstract

“…The doses of metals used in this study (5, 10, 25, and 50 lg/L) are biologically relevant. They represent low to relatively high concentrations of zinc and lead found in contaminated environments (du Preez et al, 1993;Riget et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Dose‐dependent effects of metals on gene expression in the sydney rock oyster, Saccostrea glomerata

Taylor

Nair

Thompson

et al. 2014

Environmental Toxicology

View full text Add to dashboard Cite

In the current study, we tested the effects of common environmental contaminants (the metals zinc and lead) on gene expression in Sydney rock oysters (Saccrostrea glomerata). Oysters were exposed to a range of metal concentrations under controlled laboratory conditions. The expression of 14 putative stress response genes was then measured using quantitative, real-time (q) PCR. The expression of all 14 genes was significantly affected (p < 0.05 vs. nonexposed controls) by at least one of the metals, and by at least one dose of metal. For 5 of the 14 target genes (actin, calmodulin, superoxide dismutase, topoisomerase I, and tubulin) the alteration of expression relative to controls was highest at intermediate (rather than high) doses of metals. Such responses may reflect adaptive (acclimation) reactions in gene expression at low to intermediate doses of contaminants, followed by a decline in expression resulting from exposure at higher doses. The data are discussed in terms of the intracellular pathways affected by metal contamination, and the relevance of such gene expression data to environmental biomonitoring.

show abstract

Bioaccumulation of zinc and lead in selected tissues and organs of the freshwater crab, Potamonautes warreni

Cited by 13 publications

References 5 publications

Ammonia toxicity in Southern King Crab (Lithodes santolla, Molina 1742) larvae

Ammonia toxicity in Southern King Crab (Lithodes santolla, Molina 1742) larvae

Distribution and bioaccumulation of lead in the coastal watersheds of the Northern Bohai and Yellow Seas in China

Dose‐dependent effects of metals on gene expression in the sydney rock oyster, Saccostrea glomerata

Contact Info

Product

Resources

About