FN Archimer Export Format
PT J
TI Wastewater bioremediation by mangrove ecosystems impacts crab ecophysiology: in-situ caging experiment
BT 
AF Theuerkauff, Dimitri
   Rivera-Ingraham, Georgina A.
   Lambert, Sophia
   Mercky, Yann
   Lejeune, Mathilde
   Lignot, Jehan-Hervé
   Sucré, Elliott
AS 1:1,2;2:1;3:2;4:1,2;5:1,2;6:1;7:1,2;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 UMR MARBEC (University of Montpellier, CNRS, IFREMER, IRD), Montpellier, France
   Centre Universitaire de Mayotte, Route Nationale 3, BP 53, 97660 Dembeni, Mayotte, France
C2 UNIV MONTPELLIER, FRANCE
   UNIV MAYOTTE, FRANCE
UM MARBEC
IN WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
IF 1.884
TC 7
UR https://archimer.ifremer.fr/doc/00592/70449/68559.pdf
LA English
DT Article
DE ;Mangrove;Bioturbation;Wastewater;Ecophysiology;Oxidative stress;Osmoregulation
AB Mangroves are tidal wetlands that are often under strong anthropogenic pressures, despite the numerous ecosystem services they provide. Pollution from urban runoffs is one such threats, yet some mangroves are used as a bioremediation tool for wastewater (WW) treatment. This practice can impact mangrove crabs, which are key engineer species of the ecosystem. Using an experimental area with controlled WW releases, this study aimed to determine from an ecological and ecotoxicological perspective, the effects of WW on the red mangrove crab Neosarmatium africanum. Burrow density and salinity levels (used as a proxy of WW dispersion) were recorded, and a 3-week caging experiment was performed. Hemolymph osmolality, gill Na+/K+-ATPase (NKA) activity and gill redox balance were assessed in anterior and posterior gills of N. africanum. Burrow density decreased according to salinity decreases around the discharged area. Crabs from the impacted area had a lower osmoregulatory capacity despite gill NKA activity remaining undisturbed. The decrease of the superoxide dismutase activity indicates changes in redox metabolism. However, both catalase activity and oxidative damage remained unchanged in both areas but were higher in posterior gills. These results indicate that WW release may induce osmoregulatory and redox imbalances, potentially explaining the decrease in crab density. Based on these results we conclude that WW release should be carefully monitored as crabs are key players involved in the bioremediation process. 
PY 2020
PD JAN
SO Aquatic Toxicology
SN 0166-445X
PU Elsevier BV
VL 218
UT 000509631400010
DI 10.1016/j.aquatox.2019.105358
ID 70449
ER

EF