Post-exposure bioassays are used in environmental assessment as a cost-effective tool, but the effects of organism’s recovery after exposure to pollutant has not yet been addressed in detail. The recoveries of post-exposure feeding rates after being exposed to two sublethal concentrations of cadmium during two different exposure periods (48h and 96h) were evaluated in this study under laboratory conditions using the estuarine isopod Cyathura carinata.
Results are summarized in Figs 1 and 2.
In few words, the present study has shown that inhibitions in the feeding rates of C. carinata after Cd exposure represented a stable response as a bioassay endpoint since no evidence of recovery was detected in 24h after the exposure period.
This study is published in:
Antonia Juliana Pais-Costa, Pelayo Acevedo, João Carlos Marques, Mónica Martinez-Haro (2015) Addressing the recovery of feeding rates in post-exposure feeding bioassays: Cyathura carinata as a case study. Environmental Research 137, 222-225 (link)