Gammarus pulex (L.) feeding bioassay?Effects of parasitism

Pascoe, David D.; Kedwards, Tim; Blockwell, S. J.; Taylor, E. J.

doi:10.1007/bf00196046

Cited by 55 publications

(42 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pond and stream mesocosm experiments were carried out as part of these projects to provide data that could be used to assess the capacity of the laboratory tests to predict toxic threshold concentrations in seminatural communities. Details of the methods developed in the projects can be found in publications by Taylor et al (1991aTaylor et al ( ,b, 1993aTaylor et al ( ,b, 1999a, Maund et al (1992a,b), Ferando and Andreu (1993), Ferando et al (1993a,b), Janssen et al (1993Janssen et al ( , 1994a, Mitchell et al (1993), Peither (1993), SchaK efer et al (1993, Pascoe et al (1994Pascoe et al ( , 1995Pascoe et al ( , 2000, JuK ttner et al (1995), Snell and Janssen (1995), Blockwell et al (1996), Peither et al (1996), Girling et al (2000a,b).…”

Section: Data Basesmentioning

confidence: 97%

Derivation of Predicted No-Effect Concentrations for Lindane, 3,4-Dichloroaniline, Atrazine, and Copper

Girling

Tattersfield

Mitchell

et al. 2000

Ecotoxicology and Environmental Safety

Self Cite

View full text Add to dashboard Cite

Section: Data Basesmentioning

confidence: 97%

Derivation of Predicted No-Effect Concentrations for Lindane, 3,4-Dichloroaniline, Atrazine, and Copper

Girling

Tattersfield

Mitchell

et al. 2000

Ecotoxicology and Environmental Safety

Self Cite

View full text Add to dashboard Cite

“…Gammarids were checked for infection with acanthocephalan parasites visually and, if infected, discarded because parasites can affect their behavior, such as feeding [13]. Only animals with a body length of approximately 4.5 to 6.0 mm, determined by a passive underwater separation technique [14], were used in the bioassay.…”

Section: Test Speciesmentioning

confidence: 99%

Ecotoxicological impact of the fungicide tebuconazole on an aquatic decomposer‐detritivore system

Zubrod

Bundschuh

Feckler

et al. 2011

Enviro Toxic and Chemistry

106

View full text Add to dashboard Cite

Leaf litter breakdown is a fundamental process in aquatic ecosystems that is realized by microbial decomposers and invertebrate detritivores. Although this process may be adversely affected by fungicides, among other factors, no test design exists to assess combined effects on such decomposer-detritivore systems. Hence, the present study assessed effects of the model fungicide tebuconazole (65 µg/L) on the conditioning of leaf material (by characterizing the associated microbial community) as well as the combined effects (i.e., direct toxicity and food quality-related effects (=indirect)) on the energy processing of the leaf-shredding amphipod Gammarus fossarum using a five-week semistatic test design. Gammarids exposed to tebuconazole produced significantly less feces (≈ 20%), which in turn significantly increased their assimilation (≈ 30%). Moreover, a significantly reduced lipid content (≈ 20%) indicated lower physiological fitness. The conditioning process was altered as well, which was indicated by a significantly reduced fungal biomass (≈ 40%) and sporulation (≈ 30%) associated with the leaf material. These results suggest that tebuconazole affects both components of the investigated decomposer-detritivore system. However, adverse effects on the level of detritivores cannot be explicitly attributed to direct or indirect pathways. Nevertheless, as the endpoints assessed are directly related to leaf litter breakdown and associated energy transfer processes, the protectiveness of environmental risk assessment for this ecosystem function may be more realistically assessed in future studies by using this or comparable test designs.

show abstract

“…Numerous studies have highlighted the confounding effect of parasites on the physiology of infected freshwater hosts such as bivalves (Minguez et al, 2009), arthropods (McCahon et al, 1991Pascoe et al, 1995;Sures et al, 2002;Prenter et al, 2004;Sures, 2004), or fish (Sures et al, 2005). Parasites can either disrupt the detoxification capacity of the hosts (Sures and Radszuweit, 2007) or, conversely, can help the host detoxify by accumulating heavy metals in their own tissues (review in Sures et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Microsporidia parasites disrupt the responses to cadmium exposure in a gammarid

Gismondi

Rigaud

Beisel

et al. 2012

Environmental Pollution

View full text Add to dashboard Cite

a b s t r a c tMicrosporidia parasites are commonly found in amphipods, where they are often asymptomatic, vertically-transmitted and have several effects on host sexuality and behaviour. As amphipods are often used as models in ecotoxicological studies, we investigated the effect of microsporidian infections on energy reserves and defence capacities of Gammarus roeseli under cadmium stress. Only females were infected by two microsporidia parasites: Dictyocoela roeselum or Dictyocoela muelleri. In physiological conditions, microsporidia had no major effect on energy reserves and defence capacities of G. roeseli, while under cadmium exposure, energy reserves and antioxidant defence were weaker in infected females. Moreover, higher malondialdehyde levels detected in infected females revealed that they suffered more cellular damages. Our results suggest that microsporidia may affect gammarid fitness in stressful conditions, when parasitic stress cannot be compensated by the host. Consequently, microsporidia parasites should be a factor necessary to take into account in ecotoxicology studies involving amphipods.

show abstract

Gammarus pulex (L.) feeding bioassay?Effects of parasitism

Cited by 55 publications

References 5 publications

Derivation of Predicted No-Effect Concentrations for Lindane, 3,4-Dichloroaniline, Atrazine, and Copper

Derivation of Predicted No-Effect Concentrations for Lindane, 3,4-Dichloroaniline, Atrazine, and Copper

Ecotoxicological impact of the fungicide tebuconazole on an aquatic decomposer‐detritivore system

Microsporidia parasites disrupt the responses to cadmium exposure in a gammarid

Contact Info

Product

Resources

About