The freshwater isopod Asellus aquaticus as a model biomonitor of environmental pollution: A review

O'Callaghan, Irene; Harrison, Simon; Fitzpatrick, Dara; Sullivan, Timothy

The freshwater isopod Asellus aquaticus as a model biomonitor of environmental pollution: A review

Files

OCallaghan_et_al_2019.pdf(558.32 KB)

Accepted version

Date

2019-06-28

Authors

O'Callaghan, Irene

Harrison, Simon

Fitzpatrick, Dara

Sullivan, Timothy

Publisher

Elsevier

Published Version

10.1016/j.chemosphere.2019.06.217

Abstract

Anthropogenic substances pollute freshwater systems worldwide, with serious, long-lasting effects to aquatic biota. Present methods of detecting elevated levels of trace metal pollutants are typically accurate but expensive, and therefore not suitable for applications requiring high spatial resolution. Additionally, these methods are not efficient solutions for the determination of long-term averages of pollution concentration. This is the rationale for the implementation of a biomonitoring programme as an alternative means of pollutant detection. This review summarises recent literature concerning the past and potential uses of the benthic isopod Asellus aquaticus as a biomonitor for pollution in freshwater systems. Recent studies indicate that A. aquaticus is well suited for this purpose. However, the mechanisms by which it bioaccumulates toxins have yet to be fully understood. In particular, the interactions between coexisting trace metal pollutants in the aquatic environment have only recently been considered, and it remains unclear how a biomonitoring programme should adapt to the effects of these interactions. It is evident that failing to account for these additional stressors will result in an ineffective biomonitoring programme; for this reason, a comprehensive understanding of the bioaccumulation mechanisms is required in order to reliably anticipate the effects of any interferences on the outcome.

Keywords

Asellus aquaticus , Biomonitor , Freshwater , Trace metal , Pollution

Citation

O'Callaghan, I., Harrison, S., Fitzpatrick, D. and Sullivan, T. (2019) 'The freshwater isopod Asellus aquaticus as a model biomonitor of environmental pollution: A review', Chemosphere, 235, pp. 498-509. doi: 10.1016/j.chemosphere.2019.06.217