Are shallow-water shrimps proxies for hydrothermal-vent shrimps to assess the impact of deep-sea mining?
|Author(s)||Mestre N.C.1, Auguste M.1, de Sá L.C.1, Fonseca T.G.1, Cardoso C.1, Brown A.2, Barthelemy D.3, Charlemagne N.4, Hauton C.2, Machon J.4, Ravaux J.4, Shillito B.4, Thatje S.2, Bebianno M.J.1|
|Affiliation(s)||1 : Centre for Marine and Environmental Research (CIMA), Universidade do Algarve, Campus Universitário de Gambelas, 8005-139, Faro, Portugal
2 : Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH, UK
3 : Océanopolis, Port de Plaisance du Moulin Blanc BP 91039, 29210, Brest Cedex 1, France
4 : Sorbonne Universités, UPMC Univ Paris 06, UMR CNRS 7208, MNHN/IRD-207/UCN/UA, Biologie des Organismes et Ecosystèmes Aquatiques, 7 Quai St Bernard, 75252, Cedex 5 Paris, France
|Source||Marine Environmental Research (0141-1136) (Elsevier BV), 2019-10 , Vol. 151 , P. 104771 (11p.)|
|WOS© Times Cited||5|
|Keyword(s)||Deep-sea mining, Ecotoxicology, Biomarkers, Mirocaris fortunata, Palaemon|
Polymetallic seafloor massive sulphide deposits are potential targets for deep-sea mining, but high concentrations of metals (including copper - Cu) may be released during exploitation activities, potentially inducing harmful impact. To determine whether shallow-water shrimp are suitable ecotoxicological proxies for deep-sea hydrothermal vent shrimp the effects of waterborne Cu exposure (3 and 10 days at 0.4 and 4 μM concentrations) in Palaemon elegans, Palaemon serratus, and Palaemon varians were compared with Mirocaris fortunata. Accumulation of Cu and a set of biomarkers were analysed. Results show different responses among congeneric species indicating that it is not appropriate to use shallow-water shrimps as ecotoxicological proxies for deep-water shrimps. During the evolutionary history of these species they were likely subject to different chemical environments which may have induced different molecular/biochemical adaptations/tolerances. Results highlight the importance of analysing effects of deep-sea mining in situ and in local species to adequately assess ecotoxicological effects under natural environmental conditions.