Effect of Size upon Metal Content of Lobster ( Thenus orientalis ) from the Kuwait Marine Environment

Bu-Olayan, A. H.; Mohammed, Hussain M. A.; Subrahmanyam, M.N.V.; Thomas, B. V.

doi:10.1007/s001289900745

Cited by 8 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Other explanations for the differences in accumulation between the genders have been mainly attributed to differences in diet, or due to differences in habitat (Elahi et al 2012 and references therein). Our results are in agreement with those of Bu-Olayan et al (1998), who investigated the relationship between Hg level with total length, total weight and sex in Thenus orientalis (decapod) from the Persian Gulf. Also, in this study Hg concentrations in T. orientalis females were higher than in males.…”

Section: Discussionsupporting

confidence: 92%

Mercury bioaccumulation and the population dynamics of Mesopodopsis slabberi (Crustacea: Mysidacea) along a mercury contamination gradient

et al. 2013

View full text Add to dashboard Cite

The mercury bioaccumulation and population dynamics of the mysid Mesopodopsis slabberi was assessed along a mercury gradient in Ria de Aveiro (Portugal). M. slabberi is one of the most important mysid species in European temperate coastal shallow waters playing a key ecological role. Nevertheless, no references were found concerning the possible consequences of the Hg on the trophodynamics of these coastal ecosystems. M. slabberi showed a clear bioaccumulation along the Hg gradient and through life, with mature females reaching the highest concentrations. In terms of population structure, higher densities and biomasses of M. slabberi were assessed in the most contaminated areas contrarily to the least polluted areas. Despite the mercury accumulation in its tissues no strong negative effects on the structure and population dynamics of the species were observed. However, mysids might be important in the transfer of metals from the sediments and zooplankton to higher trophic levels such as fishes, most of them with commercial interest.

show abstract

Section: Discussionsupporting

confidence: 92%

Mercury bioaccumulation and the population dynamics of Mesopodopsis slabberi (Crustacea: Mysidacea) along a mercury contamination gradient

et al. 2013

View full text Add to dashboard Cite

show abstract

“…1 Kadmium is een van die potensieel skadelikste swaarmetale. 2 Dit kan besonder giftig wees in lae konsentrasies 3,4 en kan ook akkumuleer tot hoë konsentrasies in die weefsels van mariene invertebrate. 5 Volgens Webb 3 hou dit ook gevare in vir mense en diere bo-aan die voedselketting wat gekontamineerde skulpdiere as voedsel gebruik.…”

Section: Inleidingunclassified

“…Hiervan was ses geleë binne Valsbaai terwyl die sewende as verwysinglokaliteit net buite die oostelike arm van die baai geleë was. Oppervlaksediment is versamel met 'n skoon plastiekgraaf (0.1m 2) . Monsters is by -20°C gestoor tot en met analise.…”

Section: Monsterneming Van Sedimente En Seewaterunclassified

Cadmium in False Bay: Monitoring potential of the marine snail, Oxystele tigrina (Mollusca)

Reinecke¹,

Mdzeke²,

Reinecke³

2009

Suid-Afrikaanse Tydskr Natuurwetenskap Tegnol

View full text Add to dashboard Cite

Cadmium contamination levels in the False Bay intertidal zone in South Africa were assessed in the water and sediments over a period of one year. Samples were collected seasonally from six sites within the bay, and from a reference site situated just outside the eastern arm of False Bay in order to obtain a general overview of contamination levels to which invertebrates in the coastal areas are exposed. The results from the chemical analyses of water and sediment samples revealed that most contamination was associated with the northern shore of the bay between Strand and Muizenberg, where the most populated and industrialised catchments occur. The high contamination factors calculated for Cd for sediments from some sites suggested a strong input of industrial and other discharges containing this heavy metal. There were signiﬁ cant seasonal and spatial differences in the cadmium concentrations, with spatial variations indicating localised contamination, while seasonal variations were assumed to be predominantly related to changes in precipitation and runoff at different times of the year. The mean cadmium concentrations in the water and sediments were occasionally higher than the levels recommended by the South African Water Quality Guidelines, and indicated an increase in the levels compared to the previous water quality surveys. Laboratory experiments were conducted to examine the uptake, accumulation and loss of cadmium by the different organs of the periwinkle, Oxystele tigrina, from the False Bay intertidal zone. Tissue-speciﬁc cadmium accumulation in the control and exposed individuals were compared over a 14-day exposure period to sub-lethal concentrations (0.2 and 0.4 µg/ml) of water-borne cadmium in the form of CdCl2. The animals were sampled at regular intervals and the cadmium concentrations in the different organs measured by atomic absorption spectrophotometry. The results showed a general pattern of cadmium increase in the exposed individuals over a relatively short period. Cadmium was detected in all the tissues, with varying degrees of bioaccumulation. A more or less linear pattern of cadmium accumulation indicated that the metal was not regulated by O. tigrina. The metal was partitioned differently into the soft tissues and shells, with the soft tissues generally displaying a higher rate of cadmium uptake. There was a loss of the accumulated cadmium from the organs of the contaminated individuals upon transfer to clean seawater, with variations in the percentage of cadmium loss probably indicating that only part of the accumulated cadmium was ﬁrmly bound to the different tissues. The cadmium loss in the group that was exposed to 0.40µg/ml was not signiﬁcant, indicating that the cadmium may have been more tightly bound in the tissues of this group compared to the group exposed to 0.20 µg/L. The amounts of cadmium in sediments and animal bodies in some parts of False Bay were such that cadmium could at current relatively low levels be expected to accumulate over time in these animals. Under changed physical conditions that may increase bioavailability, body levels could be reached that could affect the long term survival of this species and possibly its predators.

show abstract

Total Mercury Levels in Selected Tissues of Some Marine Crustaceans from Persian Gulf, Iran: Variations Related to Length, Weight and Sex

Elahi

Esmaili-Sari

Bahramifar

2011

Bull Environ Contam Toxicol

View full text Add to dashboard Cite

Much of the variation in trace metal tissue concentrations in marine invertebrates has been attributed to the variety in individual organism size, age and sex. This study assessed the relationship between total mercury (Hg) concentrations in edible tissue, exoskeleton and viscera with length, weight and gender for 69 samples of crustaceans, Penaeus semisulcatus (n = 30), Thenus orientalis (n = 21) and Portunus pelagicus (n = 18) from the northern part of the Persian Gulf. Significant increase in the Hg level in muscle and viscera (r > 0.65, p < 0.01) with an increase in length and weight for all three species. No relationship was found between the Hg level in exoskeleton and length or weight. Significantly higher Hg levels (p < 0.01) were found in female P. semisulcatus than in males (muscle and viscera), but no gender differences were found for the other two species.

show abstract

Effect of Size upon Metal Content of Lobster ( Thenus orientalis ) from the Kuwait Marine Environment

Cited by 8 publications

References 9 publications

Mercury bioaccumulation and the population dynamics of Mesopodopsis slabberi (Crustacea: Mysidacea) along a mercury contamination gradient

Mercury bioaccumulation and the population dynamics of Mesopodopsis slabberi (Crustacea: Mysidacea) along a mercury contamination gradient

Cadmium in False Bay: Monitoring potential of the marine snail, Oxystele tigrina (Mollusca)

Total Mercury Levels in Selected Tissues of Some Marine Crustaceans from Persian Gulf, Iran: Variations Related to Length, Weight and Sex

Contact Info

Product

Resources

About