Flux of heavy metal accumulation in various organs of the intertidal marine blue crab, Portunus pelagicus (L.) from the Kuwait coast after the Gulf War

Al-Mohanna, S. Y.; Subrahmanyam, M.N.V.

doi:10.1016/s0160-4120(01)00063-0

Cited by 69 publications

(35 citation statements)

References 22 publications

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“…As shown in Table 3, the experimental value (t cal ) is smaller than the computed value (t tab ), indicating that no significant difference between the overall means has been demonstrated. This observation is consistent with the findings of As Mohana and Subromanyam (2001) that bioaccumulation would occur irrespective of the sex of crab.…”

Section: Resultssupporting

confidence: 93%

“…The high level of the metal concentration obtained could be due to bioaccumulation of the metal and this would indicate an outset of metal contamination in the river body. Studies have proved that there is bioaccumulation of metals irrespective of the sex of crab and there is always significant increase in the accumulation of zinc, lead, and copper in various organs of the crab (As Mohana and Subromanyam 2001). This can be associated with contaminants from anthropogenic sources, atmospheric deposition, refuse incineration, domestic waste, particulates possibly from automobile exhaust.…”

Section: Resultsmentioning

confidence: 99%

“…Worst still, metals are not rapidly removed from the environment nor are they readily detoxified or degraded by metabolic activities of the organisms taking them up resulting in accumulation. Once absorbed metals tend to accumulate in certain organs and tissues rather than distributing uniformly through the body (As Mohana and Subromanyam 2001;Chou et al 2002;Ayejuyo et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Heavy metal distribution in crab (Callinectes amnicola) living on the shores of Ojo Rivers, Lagos, Nigeria

Olusegun

Olukemi

2008

Environmentalist

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Crab samples, both male and female specie, were purchased from fishermen at the Ojo Rivers, Lagos, Nigeria. The samples separated into abdomen, muscle tissue, and thorax were oven dried at 80°C for 3 days. The dried samples were then pulverized in a clean acid-washed mortar and pestle. Approximately 1.00 g each of the pulverized samples was weighed and Zn, Cr, Pb, and Cd were determined in the solution of the aqua regia digested samples by means of AAS (Buck Scientific 210 GVP model).The results obtained showed Zn metal to be consistently higher in all the female parts compared to the male with values of 12.92 ± 3.65 lg/g to 16.03 ± 1.08 lg/g and 9.33 ± 1.77 lg/g to 15.75 ± 1.02 lg/g, respectively. Mean values of 0.39 ± 0.09 lg/g and 0.22 ± 0.02 lg/g cadmium were found in the abdomen and tissue of the male crab as against 0.35 ± 0.07 lg/g and 0.17 ± 0.07 lg/g in the female crab. The tissues of both species have comparable value of chromium. Lead was below the detection limit of 0.05 lg/g in the tissues of male crab but the female tissue contained 0.83 ± 0.13 lg/g and in other parts identified, lead was consistently higher than the 2.00 lg/g permissible level of WHO in foods. A simple pair t-test did not demonstrate any significant difference in the distribution of metals between the male and female crabs. The coefficient of variation (CV) calculated for each metal with respect to the studied parts showed Pb to be widely distributed (56.23-89.54%) while Cr did not vary widely (4.17-8.20%).

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Heavy metal distribution in crab (Callinectes amnicola) living on the shores of Ojo Rivers, Lagos, Nigeria

Olusegun

Olukemi

2008

Environmentalist

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“…Concentrations of cadmium, zinc, lead, and copper as determined in hepatopancreas of N. granulata from the Samborombón Bay and the Mar Chiquita coastal lagoon, in Argentina, were relatively similar or even higher, as compared with reports from other authors for related species within different ecosystems. Heavy-metal concentrations found in this study were higher than those reported by Al-Mohanna and Subrahmanyam (2001) for Portunus pelagicus from the Kuwait Gulf where heavy metals were associated with the Gulf War oil spill. Turoczy et al (2001) reported higher cadmium concentrations in the crab Pseudocarcinus gigas from Australian water, while-unlike this-greater levels of copper were recorded in N. granulata.…”

Section: Discussioncontrasting

confidence: 88%

The burrowing crab Neohelice granulata as potential bioindicator of heavy metals in estuarine systems of the Atlantic coast of Argentina

Beltrame

Marco

Marcovecchio

2010

Environ Monit Assess

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This paper presents the concentrations of total copper, lead, cadmium, and zinc in hepatopancreas of the burrowing crab Neohelice granulata from the Samborombón Bay (La Plata River estuary) and the Mar Chiquita coastal lagoon, Argentina. The highest accumulation of lead was observed in Mar Chiquita samples, whereas copper, zinc, and cadmium concentrations were higher in those from Samborombón Bay. Marked temporal and geographic availability differences were observed, while sexual differences only were observed for zinc. Finally, the validity of using this species as bioindicator of heavy-metal pollution within the assessed estuarine ecosystems is discussed.

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“…Studies on benthic invertebrates, such as snails and clams immediately after the spill were found to have significantly higher levels of Zn, Cu, and Ni in their tissues (Bu-Olayan and Subrahmanyam 1997). A decade after the spill, studies on the tissues of crabs showed high levels of Zn and Cu, along with detectable levels of other heavy metals, demonstrat-ing the persistence of these compounds in the ecosystem (Al-Mohanna and Subrahmanyam 2001).…”

Section: Active Combat Contaminationmentioning

confidence: 99%

The effects of modern war and military activities on biodiversity and the environment

et al. 2015

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Abstract:War is an ever-present force that has the potential to alter the biosphere. Here we review the potential consequences of modern war and military activities on ecosystem structure and function. We focus on the effects of direct conflict, nuclear weapons, military training, and military produced contaminants. Overall, the aforementioned activities were found to have overwhelmingly negative effects on ecosystem structure and function. Dramatic habitat alteration, environmental pollution, and disturbance contributed to population declines and biodiversity losses arising from both acute and chronic effects in both terrestrial and aquatic systems. In some instances, even in the face of massive alterations to ecosystem structure, recovery was possible. Interestingly, military activity was beneficial under specific conditions, such as when an exclusion zone was generated that generally resulted in population increases and (or) population recovery; an observation noted in both terrestrial and aquatic systems. Additionally, military technological advances (e.g., GPS technology, drone technology, biotelemetry) have provided conservation scientists with novel tools for research. Because of the challenges associated with conducting research in areas with military activities (e.g., restricted access, hazardous conditions), information pertaining to military impacts on the environment are relatively scarce and are often studied years after military activities have ceased and with no knowledge of baseline conditions. Additional research would help to elucidate the environmental consequences (positive and negative) and thus reveal opportunities for mitigating negative effects while informing the development of optimal strategies for rehabilitation and recovery.Key words: war, biodiversity, ecosystem structure, conflict, military activities, environment, conservation biology.Résumé : La guerre est une force omniprésente ayant le potentiel d'altérer l'atmosphère. Les auteurs passent en revue les conséquences potentielles des activités guerrières et militaires modernes sur la structure et le fonctionnement des écosystèmes. On met l'accent sur les effets directs et indirects des conflits, des armes nucléaires, des entrainements militaires et des contaminants des produits militaires. Dans l'ensemble, on constate que les activités préalablement mentionnées ont des effets négatifs écrasants sur la structure et le fonctionnement des écosystèmes. Avec des altérations dramatiques des habitats, la pollution et les perturbations environnementales contribuent au déclin des populations et aux pertes de biodiversité provenant des effets aigus et chroniques sur les systèmes terrestres aussi bien qu'aquatiques. Tout de même dans certains cas, en présence d'altérations massives de la structure des écosystèmes, la récupération s'est avérée possible. Il est intéressant de noter qu'une activité militaire fut bénéfique sous des conditions spécifiques telles que la création d'une zone d'exclusion, en générant des augmentations générales des p...

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Flux of heavy metal accumulation in various organs of the intertidal marine blue crab, Portunus pelagicus (L.) from the Kuwait coast after the Gulf War

Cited by 69 publications

References 22 publications

Heavy metal distribution in crab (Callinectes amnicola) living on the shores of Ojo Rivers, Lagos, Nigeria

Heavy metal distribution in crab (Callinectes amnicola) living on the shores of Ojo Rivers, Lagos, Nigeria

The burrowing crab Neohelice granulata as potential bioindicator of heavy metals in estuarine systems of the Atlantic coast of Argentina

The effects of modern war and military activities on biodiversity and the environment

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