Freshwater-saltwater interface and estuarine sediment in situ assays based on post-exposure feeding of chironomids and polychaetes

Soares, Sara Silva; Moreira, Susana; Andrade, Sofia; Guilhermino, Lúcia; Ribeiro, Rui

doi:10.1007/bf02732864

Cited by 15 publications

(5 citation statements)

References 14 publications

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“…A reduction in feeding is a sensitive measure of sublethal effects of pollution in some estuarine species (Moreira et al, 2006;Soares et al, 2005), and has been recorded in other marine invertebrate microplastic exposure studies (Besseling et al, 2013;Cole et al, 2015;Watts et al, 2015; Welden and Cowie, 2016;Wright et al, 2013a). Tyre particle/microplastic ingestion may cause physical gut blockage, false satiety, and tissue damage (Cole et al, 2015;Welden and Cowie, 2016;Wright et al, 2013a), alongside the leaching of chemical additives which may have further negative impacts (Jang et al, 2021).…”

Section: Burrowing and Feeding Ratesmentioning

confidence: 97%

Tyre particle exposure affects the health of two key estuarine invertebrates

JI²,

RC³

2022

Environmental Pollution

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Section: Burrowing and Feeding Ratesmentioning

confidence: 97%

Tyre particle exposure affects the health of two key estuarine invertebrates

JI²,

RC³

2022

Environmental Pollution

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“…Indeed, feeding has been recognized as an ecologically relevant response and has been successfully quantified as a sublethal assay endpoint for various groups of aquatic organisms, including estuarine organisms [9][10][11]. More specifically, postexposure feeding, rather than feeding during exposure, has been used as an endpoint because feeding during exposure is difficult to measure and because, in general, feeding depression to toxic stress persists in the period immediately after exposure [9,10,12,13].…”

Section: Introductionmentioning

confidence: 99%

An estuarine mudsnail in situ toxicity assay based on postexposure feeding

Krell¹,

Moreira‐Santos²,

Ribeiro³

2011

Enviro Toxic and Chemistry

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In situ assays provide more realistic exposure scenarios than laboratory assays, which is particularly pertinent for estuaries because exposure conditions are difficult to simulate. Traditionally, sublethal toxicity testing endpoints, such as growth, emergence, and reproduction, imply time-delayed extrapolations from individuals to populations, communities, and ecosystems. Sublethal responses mechanistically linked to ecosystem functions have been largely neglected. Feeding is an unequivocal ecologically meaningful response because its impairment has direct and immediate effects on ecosystems, by hampering key functions such as organic matter decomposition, long before its effects at the individual level have consequences at successively higher levels of biological organization. The ultimate goal of the present study was to widen the range of ecosystem functions for estuarine quality assessments. Specifically, a short-term in situ assay based on the postexposure feeding of the mudsnail Hydrobia ulvae is presented. Methodologies to quantify precisely postexposure egestion as a surrogate of feeding were achieved. A multiple regression model from laboratory experiments was successfully applied to an in situ assay at reference (Mira River) and contaminated Portuguese estuaries (Sado River) for predicting reference results and allowing unraveling confounding factors during exposure (temperature, salinity, sediment grain size). Sensitivity comparisons of postexposure feeding with survival and growth, after Cu exposure, were carried out and used for a first preliminary appraisal of the relative consequences of ecosystem-level immediate effects.

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“…It is assumed that the impact on the organism during exposure will persist after the exposure has ended, and this will be reflected in post-exposure feeding. Exposure to different contaminants (e.g., carbendazim, chlorpyrifos, copper, dimethoate, naturally contaminated sediment, profenofos, pulp mill effluent, and zinc) demonstrated to affect the post-exposure feeding of the prawn Macrobrachium rosenbergii (Satapornvanit et al, 2009), the midge Chironomus riparius (Soares et al, 2005), the amphipod Echinogammarus meridionalis (Agostinho et al, 2012), the crab Carcinus maenas (Moreira et al, 2006), the polychaete Hediste (Nereis) diversicolor , and the cladoceran Daphnia magna (McWilliam & Baird, 2002;Rosa et al, 2010). Recently, Krell et al (2011) also showed that contamination affect the post-exposure feeding of the snail H. ulvae.…”

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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Freshwater-saltwater interface and estuarine sediment in situ assays based on post-exposure feeding of chironomids and polychaetes

Cited by 15 publications

References 14 publications

Tyre particle exposure affects the health of two key estuarine invertebrates

Tyre particle exposure affects the health of two key estuarine invertebrates

An estuarine mudsnail in situ toxicity assay based on postexposure feeding

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

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