Sediment Toxicity Bioassays Using<i>Ruditapes decussatus</i>Embryos and Larvae to Assess the Contamination in Four Sites on the Coast of Tunisia

Fathallah, Salem; Medhioub, Mohamed Néjib; Medhioub, Amel; Kraïem, M. M.

doi:10.1080/15320383.2012.664182

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…Hydrobia ulvae (Pennant) (Gastropoda) is an estuarine benthic mudsnail found in intertidal ecosystems considered an important energy source for many organisms (Lillebø et al, 1999;Pascual & Drake, 2008). Unfortunately, environmental changes and contamination, frequent in estuarine and coastal environments (Redondo-Gómez et al, 2009;Fathallah et al, 2012), threaten seriously H. ulvae populations (Lillebø et al, 1999). Because mudsnails live in direct contact with sediment (Haubois et al, 2005), they have been used to provide reliable information about the effects of sediment toxicity (Shipp & Grant, 2006;Hampel et al, 2009;Mauffret et al, 2010;Araújo et al, 2012;Campana et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Motionless of snail Hydrobia ulvae (Pennant) as response to sediment toxicity and its consequences for the post-exposure feeding

Araújo¹,

Blasco²,

Moreno-Garrido³

2024

Ecotoxicol. Environ. Contam.

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Post-exposure feeding and motionless may be useful endpoints for assessing toxicity. The present study aimed to examine (i) the immobility of the estuarine snail Hydrobia ulvae resulting from short-term exposure to copper-spiked sediment, and subsequently, (ii) the potential application of post-exposure feeding (indirectly measured as pellets excreted) as an ecotoxicological response associated with motionlessness. Mobility and post-exposure feeding were influenced by copper contamination. Motionless was noticeable above the concentration of 200 µg Cu g -1 , where 40% of the organisms were inactive. Practically all the organisms remained active at the two lowest concentrations: 40 (control) and 60 µg Cu g -1 . For 400 and 800 µg Cu g -1 the motionless was generally higher than 50%. Mortality higher than 25% was observed at 200, 400 and 800 µg Cu g -1 , with values of 27, 40 and 60%, respectively. The feeding inhibition values showed an increasing inhibition from 20% at the lowest concentration (60 µg Cu g -1 ), up to 59% at 400 µg Cu g -1 ; at concentration of 800 µg Cu g -1 , although the physical activity inhibition had reached 67%, the post-exposure feeding was 1.5 higher in relation to the control. Probably, the starvation period due to motionless during exposure seems to increase the post-exposure feeding and egestion when food was provided; alternatively, increased pellet production could also indicate a detoxification process.

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Section: Introductionmentioning

confidence: 99%

Motionless of snail Hydrobia ulvae (Pennant) as response to sediment toxicity and its consequences for the post-exposure feeding

Araújo¹,

Blasco²,

Moreno-Garrido³

2024

Ecotoxicol. Environ. Contam.

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Sediment Contact Assay Using the Carpet Shell Clam, Ruditapes decussatus L., Embryos and Larvae for Assessing Contamination Levels of Four Sites in Tunisian Coast

Fathallah

Medhioub

Kraïem

2013

Bull Environ Contam Toxicol

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This study assessed sediment pollution along the Tunisian coast using the sediment contact assay with embryo and larval life-stages of the clam Ruditapes decussatus. Sediment was collected from four sites for testing: Mahres, Monastir lagoon, Zarat and Chebba. Embryo development was significantly (p < 0.05) inhibited in sediment at concentrations ≥5 g L(-1) from the Mahres and Monastir sites, and ≥25 g L(-1) with sediment from the Zarat site. Sediment from the Chebba site had no effect at concentrations up to 125 g L(-1). Compared to the control, the percentages of larval mortality were significantly higher in sediment from Monastir, Mahres and Zarat at sediment concentrations ≥25 g L(-1); mortality increased with increasing sediment concentration to 50.1%, 39.5% and 31.2% respectively at 125 g L(-1). Chebba sediment did not affect the survival of larvae.

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Toxicity of Chemically Spiked Sediment to the Carpet Shell ClamRuditapes decussatusEmbryos and Larvae

Fathallah¹

2014

Soil and Sediment Contamination: An International Journal

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Sediment Toxicity Bioassays UsingRuditapes decussatusEmbryos and Larvae to Assess the Contamination in Four Sites on the Coast of Tunisia

Cited by 3 publications

References 23 publications

Motionless of snail Hydrobia ulvae (Pennant) as response to sediment toxicity and its consequences for the post-exposure feeding

Motionless of snail Hydrobia ulvae (Pennant) as response to sediment toxicity and its consequences for the post-exposure feeding

Sediment Contact Assay Using the Carpet Shell Clam, Ruditapes decussatus L., Embryos and Larvae for Assessing Contamination Levels of Four Sites in Tunisian Coast

Toxicity of Chemically Spiked Sediment to the Carpet Shell ClamRuditapes decussatusEmbryos and Larvae

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