Related Experiment Video
Updated: Jun 24, 2026
09:33
An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
Published on: December 17, 2018
Amphipod susceptibility to metals: cautionary tales
M Ramiro Pastorinho1, Trevor C Telfer, Amadeu M V M Soares
1Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Portugal. rpastorinho@ua.pt
Chemosphere
|April 1, 2009
Summary
Aquatic crustacean metal accumulation studies must consider life stage, nutrition, and gender. Ignoring these factors, especially cadmium (Cd) and zinc (Zn) uptake in exoskeletons, can lead to inaccurate ecological risk assessments.
Area of Science:
- Environmental toxicology
- Ecotoxicology
- Marine biology
Background:
- Standard heavy metal accumulation studies in aquatic crustaceans often use whole-body burden, neglecting tissue-specific uptake, life stage, gender, and nutritional effects.
- This approach can lead to erroneous dose-response relationships, inaccurate ecological risk assessments, and flawed metal budget calculations.
- Metals may be sequestered into non-bioavailable forms or tissues, leading to under- or over-estimation of toxicity and trophic transfer.
Purpose of the Study:
- To investigate the influence of life stage, gender, and nutritional status on the uptake and bioaccumulation of zinc (Zn) and cadmium (Cd) in the amphipod Echinogammarus marinus.
- To determine if differential uptake and bioaccumulation occur based on gender for these metals.
- To assess the contribution of exoskeleton accumulation to the overall metal burden and its bioavailability.
Main Methods:
- Experimental evaluation of zinc (Zn) and cadmium (Cd) uptake in Echinogammarus marinus.
- Assessment of influences from life stage, gender, and pre-existing nutritional state.
- Analysis of metal accumulation in different tissues, including the exoskeleton.
Main Results:
- Life stage and nutritional status significantly impacted the uptake and bioaccumulation of both Zn and Cd.
- Cadmium (Cd) showed differential uptake and bioaccumulation between genders.
- Significant accumulation of both metals was observed in the amphipod exoskeleton, but this fraction is largely bioavailable.
Conclusions:
- Life stage and nutritional status are critical factors influencing metal bioaccumulation in aquatic crustaceans.
- Gender-specific differences in metal uptake are metal-dependent, as seen with cadmium (Cd).
- Exoskeleton accumulation of metals like Zn and Cd contributes to the whole-body burden but has limited bioavailability, necessitating careful interpretation of toxicity and risk assessments.
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