Comparative study of the sensitivity to cadmium of two populations of Gambusia affinis from two different sites

Annabi, Ali; Messaoudi, Imed; Kerkeni, Abdelhamid; Saïd, Khaled

doi:10.1007/s10661-008-0448-6

Cited by 25 publications

(12 citation statements)

References 36 publications

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“…Several studies indicate that populations that have been pre-exposed to toxicants have an increased tolerance compared to non-exposed populations (Clements 1999;Muyssen et al 2002;Annabi et al 2009). Two explanations for this increased tolerance are put forward: physiological acclimation (Howell 1985;Stuhlbacher and Maltby 1992) and genetic adaptation (Barata et al 2002;Ward and Robinson 2005).…”

Section: Discussionmentioning

confidence: 99%

A comparison of the short-term toxicity of cadmium to indigenous and alien gammarid species

et al. 2012

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Amphipods play an important role in many aquatic ecosystems and are commonly used in ecotoxicology and ecosystem health assessment. Several alien gammarids have been introduced in many regions of the world during the last decades. In this study, we investigated if differences in cadmium sensitivity occurred between (1) different species belonging to the family Gammaridae and (2) different populations of the same species originating from a polluted or a non-polluted site. The acute cadmium toxicity to two indigenous (Gammarus pulex and Gammarus fossarum) and four alien (Dikerogammarus villosus, Echinogammarus berilloni, Gammarus roeseli and Gammarus tigrinus) gammarids occurring in Belgium was tested. Significant differences (P < 0.05) in median lethal concentrations (LC(50)) were found between the different species, with 72 h-LC50s ranging from 6.3 to 268 μg/l and 96 h-LC50s from 4.7 to 88.9 μg/l. No clear trend in Cd sensitivity was found when comparing indigenous and alien gammarids. D. villosus, an alien invasive species, was the most sensitive to Cd toxicity and E. berilloni, another alien species, the least sensitive. In addition, larger Gammarid species were more sensitive to Cd toxicity than smaller ones. No significant differences were found between populations of the same species originating from metal polluted sites or non-polluted sites. Overall, our results showed that considerable differences in Cd sensitivity exist between gammarid species, which should be taken into consideration in environmental risk assessment and water quality standard setting. Finally, our data suggest that alien gammarids would not have an advantage over indigenous gammarids in Cd contaminated environments.

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Section: Discussionmentioning

confidence: 99%

A comparison of the short-term toxicity of cadmium to indigenous and alien gammarid species

et al. 2012

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“…Origin and maintenance of parental fish Adult Mosquitofish were collected, using a hand net, in March 2007 from an unpolluted estuary in Tunisia (Annabi et al 2008). In the laboratory, pregnant females were selected based on external morphology and kept in 30-l glass aquariums filled with dechlorinated tap water under a photoperiod 14 h: 10 h (light: dark) cycle and a temperature of 24 ± 1°C.…”

Section: Methodsmentioning

confidence: 99%

“…Animals in the first group were maintained in Cd-free water at 24°C to serve as controls, whereas those of the three other groups were exposed either to Cd (0.4 mg/l as Cd Cl 2 ) at 24°C, to high temperature (32°C), or to Cd at 32°C. The Cd concentration chosen was 10% of the 96-h LC 50 value from the acute toxicity test in the juveniles of Gambusia affinis (Annabi et al 2008). Animals were fed three times a day with Tetramin flake food.…”

Section: Experimental Designmentioning

confidence: 99%

Influence of high temperature on cadmium-induced skeletal deformities in juvenile mosquitofish (Gambusia affinis)

Sassi

Annabi

Kessabi

et al. 2010

Fish Physiol Biochem

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The aim of this study was to assess the effect of high temperature on cadmium (Cd)-induced skeletal deformities in juvenile Mosquitofish, Gambusia affinis. For this purpose, 188 juveniles (1 day old) were equally divided into the control group, which was maintained in Cd-free water at 24 degrees C, and three treated groups exposed either to Cd (0.4 mg/l as Cd Cl(2)) at 24 degrees C, to high temperature (32 degrees C), or to Cd at 32 degrees C for 30 days. The results showed that Cd exposure at 24 degrees C significantly increased the Cd accumulation (P < 0.0001) in the whole tissues of juveniles as well as the incidence of skeletal deformities (P < 0.01) compared with control animals. Exposure to high temperature also led to a significant increase in the incidence of skeletal deformities (P < 0.01) with respect to the control group. Interestingly, our results showed that the combined exposure to Cd and high temperature led to a more significant increase in Cd accumulation and in the frequency of spinal deformities than exposure to Cd or high temperature alone. These results confirm that temperature increases Cd toxicity and needs to be taken into account for the accurate prediction and assessment of Cd-induced spinal deformities in fish.

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“…Seawater samples were stabilized at pH 2 with 1 M HNO 3 prior to direct determination of total Cd concentrations [21]. Sediment samples were oven-dried for 48 h at 100°C and 100 mg of each sample was mineralized at 250°C with a set of acids composed of 1 ml of HNO 3 , 2 ml of fluorhydric acid, and 0.5 ml of perchloric acid and then adjusted to 10 ml with ultrapure water [22].…”

Section: Analytical Proceduresmentioning

confidence: 99%

Involvement of Cd Bioaccumulation in Spinal Deformities Occurrence in Natural Populations of Mediterranean Killifish

Kessabi

Kerkeni

Saïd

et al. 2008

Biol Trace Elem Res

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The aim of this study was to investigate the possible influence of environmental exposure to cadmium (Cd) on the spinal deformities occurrence in the Mediterranean killifish, Aphanius fasciatus (Pisces: Cyprinodontidae). For this purpose, some indicators of skeletal bone mineralization, Cd, and calcium (Ca) concentrations in spinal column as well as bioaccumulation of Cd from the water and the sediment have been compared in normal and deformed fish collected from polluted (S1) and nonpolluted (S2) areas in the Gulf of Gabès in Tunisia. When compared to the normal fish, the deformed fish showed signs of spinal column demineralization such as significant decrease in the ash weight/dry weight ratio, percentage of nonorganic components content, and Ca concentration. Cd concentrations in spinal column and liver were significantly higher in deformed fish than in normal fish. A highly significant negative correlation (r = -0.915, p < 0.01) between Cd and Ca concentrations was noted in spinal column of deformed fish. Bioaccumulation factors of Cd in the liver from the water and the sediment in deformed fish were also significantly higher (p < 0.0001) than in normal fish from S1 and S2. These findings suggest that the ability to accumulate large amount of Cd may represent a potential risk to induce spinal deformities in natural populations of Mediterranean killifish.

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Comparative study of the sensitivity to cadmium of two populations of Gambusia affinis from two different sites

Cited by 25 publications

References 36 publications

A comparison of the short-term toxicity of cadmium to indigenous and alien gammarid species

A comparison of the short-term toxicity of cadmium to indigenous and alien gammarid species

Influence of high temperature on cadmium-induced skeletal deformities in juvenile mosquitofish (Gambusia affinis)

Involvement of Cd Bioaccumulation in Spinal Deformities Occurrence in Natural Populations of Mediterranean Killifish

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