Immediate biomarker responses to benzo[a]pyrene in polluted and unpolluted populations of the blue mussel (Mytilus edulis L.) at high-latitudes

Halldórsson, Halldór Pálmar; Pirro, Maurizio De; Romano, Chiara; Svavarsson, Jörundur; Sarà, Gianluca

doi:10.1016/j.envint.2007.11.002

Cited by 30 publications

(19 citation statements)

References 53 publications

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“…Bivalves and, more specifically mussels, are commonly used in ecotoxicology studies and have been extensively applied in various monitoring programmes (Halldórsson et al, 2007). Due to their wide distribution, sentinel, long life cycle and filter feeding behavior, they are a good bioindicator species for assessing the toxicity of pesticides ([Vidal-Liñán et al, 2010,Carro et al, 2012, Suarez et al, 2013).…”

Section: Discussionmentioning

confidence: 98%

Acute toxicity of cypermethrin on the freshwater mussel Unio gibbus

Khazri¹,

Sellami²,

Dellali³

et al. 2015

Ecotoxicology and Environmental Safety

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Section: Discussionmentioning

confidence: 98%

Acute toxicity of cypermethrin on the freshwater mussel Unio gibbus

Khazri¹,

Sellami²,

Dellali³

et al. 2015

Ecotoxicology and Environmental Safety

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“…Despite their productivity, they are often overlooked as unique coastal ecosystems. High levels of productivity of 'freshwater-free' shallow ecosystems can be induced 1) by organic waste input from aquaculture activities (Sarà 2007a), 2) exchange of organic matter with nearby highly productive areas (Ray and Straskraba 2004), or 3) highly enriched harbors or bays (e.g., Halldó rsson et al 2008). Under such limnological conditions, the only possible nutrient sources are from adjacent systems or in situ organic matter decomposition in sediments (Pusceddu et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Variation of suspended and sedimentary organic matter with depth in shallow coastal waters

Sarà

2009

Wetlands

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I tested the hypothesis that the quantity and quality of suspended and sediment organic matter in shallow coastal waters is affected by wind-induced resuspension at a smaller depth scale (, 1 m) than usually assumed. Water and sediment surface (0 to 1 cm) samples were collected on a seasonal basis and analyzed for total suspended matter, organic fraction, and phytopigments at 12 shallow sites representing a depth gradient from 0.2 to 2.0 m along the western shore of Sicily. Water column concentrations of all measured variables decreased rapidly with increasing water column depth, and concentrations levelled off at about 1 m water column depth. The likelihood of sediment resuspension by wind for various combinations of water column depth and fetch length was modelled using the CERC (U.S. Army Corps of Engineers, Coastal Engineering Centre, Washington D.C. US) model for 10 years of local wind data. The simulations indicated that even light winds (2 m s 21 ) increased the likelihood of resuspension in the shallowest basin (0.2 m depth) with an effective fetch of 250 m. This study provides evidence that shallow water systems should not be investigated by considering the entire water column as a single homogenous layer. Investigations of shallow water ecosystems should consider 2 main layers with different ecological conditions and functions: a shallow surface turbulent layer from the surface to a depth of 1 m that is strongly affected by wind-driven physical forces and a deeper, below 1 m to the sediment surface, layer where wind-driven turbulence has less impact.

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“…Indeed, since the Sixties, with the International Biological Program (IBP; the first coordinated large-scale ecological and environmental set of studies adopted by many countries worldwide), bivalves and, more specifically mussels, have been considered focal species, and have often been adopted as indicators in environmental risk assessment (Halldórsson et al, 2007). In the case of mussels, microbial Bt products would be assimilated through food acquisition mechanisms, since the size of Bt spores should fall well within the dimensional range of preferred bivalve food (from about 1 mm to over 90e100 mm; Dame, 1996).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, heart beat rate in each bivalve species was measured by following procedures employed by Depledge and Anderson (1990), Halldórsson et al (2007) and Sarà and De Pirro (2011). To measure the eco-physiological responses of B. pharaonis and M. minimus, we used eight individuals (n ¼ 8) for each species collected from each 10-L aquarium where they were treated with Bt.…”

Section: Physiological Measurementsmentioning

confidence: 99%

“…As no data are available on the susceptibility of these non-target organisms and data on exposure and concentration to Bt in seawater are scant and contrasting, we considered the two worst scenarios possible, using two high concentrations of commercial Bt. Thus, under laboratory mesocosmal conditions we measured, in both species, i) feeding rates, as expressed by clearance and ingestion rates, ii) oxygen consumption and excretion rates, iii) assimilation and absorption rates, iv) energy available for growth and reproduction (i.e., Scope for Growth, SFG e Widdows and Staff, 2006) and, lastly, heart beat rate, a reliable measure of stress successfully adopted in recent studies with other marine invertebrates (Dong and Williams, 2011;Halldórsson et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Eco-physiological response of two marine bivalves to acute exposition to commercial Bt-based pesticide

Manachini

Arizza

Rinaldi

et al. 2013

Marine Environmental Research

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a b s t r a c tMicrobial products based on the entomopathogenic bacterium Bacillus thuringiensis (Bt) are among the most common biopesticides used worldwide to suppress insect pests in forests, horticulture and agricultural crops. Some of the effects of commercial Bt have been recorded for terrestrial and freshwater non-target organisms but little research is available on marine fauna. Nevertheless, due to the contiguity of agro-ecosystems and coastal habitats, marine fauna may be highly influenced by this control method. We studied the effect of a commercial Bt product on the physiological and ecological responses and the energy budget of two of the most frequent marine intertidal bivalves in the Mediterranean, the native Mytilaster minimus and the invasive Brachidontes pharaonis. To test the effects experimentally, we simulated the worst scenarios possible using the average dose applied to fields and a hypothetical accumulation dose. The results showed the feeding rates of both species were affected detrimentally by the different experimental conditions; higher concentrations led to higher respiration rates, however neither species showed any significant difference in excretion rates. The biopesticide had a significant effect on the energy budget, the values decreasing with doses. In addition, it led to high mortality for the worst treatments and, in both species, induced significantly higher cardiac activity than in the controls. These results indicate a measurable effect of Bt commercial products on marine organisms, and great attention should be paid to biopesticides composed by entomopathogenic bacteria and addictive compounds. In addition, the results highlight the urgent need to study not only the effects of anthropogenic pressures on target organisms but also to extend our view to other ecosystems not expected to be influenced. Gaining data at the organismal level should help increase the sustainability of pest control and reduce the consequences of side-effects.

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Immediate biomarker responses to benzo[a]pyrene in polluted and unpolluted populations of the blue mussel (Mytilus edulis L.) at high-latitudes

Cited by 30 publications

References 53 publications

Acute toxicity of cypermethrin on the freshwater mussel Unio gibbus

Acute toxicity of cypermethrin on the freshwater mussel Unio gibbus

Variation of suspended and sedimentary organic matter with depth in shallow coastal waters

Eco-physiological response of two marine bivalves to acute exposition to commercial Bt-based pesticide

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