This paper examines the impact of an industrial point-source atmospheric emission on the feeding of early life stages of a terrestrial invertebrate. Larvae of a bagworm moth, Luffia ferchaultella [Stephens], were fed terrestrial epiphytic algae (Desmococcus viridis [Menegh]) collected from five sites located along a 16 km transect around the Avonmouth zinc smelter. After 10 days of exposure symptoms of lethal and sublethal toxicity (mortality and paralysis) were observed. Reductions in the amount of faecal material (frass) produced were also identified, and these correlated with distance downwind of the smelter. The elevated concentrations of lead, mercury, arsenic, antimony, copper, cadmium, lead and nickel present in the algae could account for these symptoms of toxicity. Similar symptoms were observed when larvae were fed algae spiked with inorganic mercury. These results are consistent with other studies of soil toxicity conducted around the Avonmouth smelter. However, the current study suggests that the impacted area exceeds this 16 km transect and demonstrates the value of bagmoth larvae as sensitive biomonitors of metallic atmospheric pollutants above the rhizosphere.

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http://dx.doi.org/10.1007/s10646-009-0382-6DOI Listing

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This paper examines the impact of an industrial point-source atmospheric emission on the feeding of early life stages of a terrestrial invertebrate. Larvae of a bagworm moth, Luffia ferchaultella [Stephens], were fed terrestrial epiphytic algae (Desmococcus viridis [Menegh]) collected from five sites located along a 16 km transect around the Avonmouth zinc smelter. After 10 days of exposure symptoms of lethal and sublethal toxicity (mortality and paralysis) were observed.

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Background: Exposure to heavy metals may cause kidney damage. The population living near the Avonmouth zinc smelter has been exposed to cadmium and other heavy metals for many decades.

Objectives: We aimed to assess Cd body burden and early signs of kidney damage in the Avonmouth population.

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Critical analysis of soil invertebrate biomarkers: a field case study in Avonmouth, UK.

Ecotoxicology

November 2004

Centre for Environment, Fisheries and Aquaculture Sciences (CEFAS), Pakefield Road, Lowestoft, Suffolk NR33 OHT, United Kingdom.

During the period 1996-1999 a joint field research programme (BIOPRINT-II) funded by the European Union was undertaken. The main objective of this project was the deployment of biochemical fingerprint techniques of soil invertebrate biomarkers for assessing the exposure and effect of toxicants on soil invertebrates in the field. The aim was to apply these techniques in the field focusing on a a chronically polluted field near a lead and zinc smelter in Avonmouth (UK).

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Cepaea hortensis is a widespread terrestrial pulmonate, contributing significantly to element fluxes in soil ecosystems. Due to its capacity of accumulating certain trace elements in its tissues, Cepaea hortensis can serve as a biological indicator of metal accumulation in contaminated areas. In response to Cd exposure this species and related helicid pulmonates are also able to synthesize an inducible, Cd-binding metallothionein (MT) isoform specifically serving in binding and detoxification of this metal.

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A pedological characterisation of seven sites along a transect from a smelter at Avonmouth, UK, was undertaken. Site locations comprised a mixture of both grassland (5 sites) and oak tree dominated (2 sites) areas. Geographically, sites were either low lying or on adjacent elevated ground.

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