Dietary copper effects in the estuarine crab, Neohelice (Chasmagnathus) granulata, maintained at two different salinities

Low salinity enhances NI-mediated oxidative stress and sub-lethal toxicity to the green shore crab (Carcinus maenas)

“…Ni has been shown to cause oxidative stress in freshwater fish (Kubrak et al, 2012a(Kubrak et al, ,b, 2013(Kubrak et al, , 2014Loro et al, 2012), and metals are known to also cause oxidative stress in marine invertebrates (Sabatini et al, 2009;Vlahogianni et al, 2007). The present data are the first to show oxidative stress in response to Ni in marine invertebrates.…”

“…Reduced salinity has been shown to exacerbate oxidative stress in metal-exposed killifish Loro et al, 2012). However, very few data exist in terms of the interactions between metals, salinity and oxidative stress in marine invertebrates (Sabatini et al, 2009;Vlahogianni et al, 2007).…”

The influence of sediment particle size and organic carbon on toxicity of copper to benthic invertebrates in oxic/suboxic surface sediments

“…Although both bivalve species completely bury themselves when sediments are present, they displayed greater than 85% survival in water-only test controls over 10 d. The 10-d LC50 values for S. trigonella and T. deltoidalis for dissolved Cu were determined to be 15 AE 4 and 5 AE 2 mg/L (n ¼ 2), respectively. For each species, monitoring of survival over the 10-d tests indicated that survival decreased sharply after approximately 5 d. The 3-, 5-, and 7-d LC50 values were 179 (158-214), 59 (48-73), and 25 (18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30) mg Cu/L for S. trigonella, and 208 (186-246), 102 (90-110), and 9.9 (5.6-15) mg Cu/L for T. deltoidalis, respectively. The test waters were replaced daily, and ammonia concentrations were expected to be well below effects thresholds for all species.…”

“…Although these properties may reduce porewater metal concentrations, the greater nutritional content and the optimum particle size for ingestion by deposit-feeding organisms may increase the rate of dietary exposure to metals [8,11,21,22]. For benthic organisms, increasing numbers of studies have demonstrated the significance of bioaccumulation and toxicity of metals from dietary exposure [7,21,[23][24][25]. For Cu, acute effects from dietary exposure have been demonstrated for the epibenthic amphipod Melita plumulosa, a species that ingests significant amounts of Environmental Toxicology and Chemistry, Vol.…”

Tag performance and physiological responses of juvenile mud crabs Scylla paramamosain tagged with visible implant elastomer

“…The same result in SOD activity in the hepatopancreas further illustrated that eight weeks after tagging the hepatopancreas (the most important tissue of the mud crab in detoxification and digestion) did not appear to show any stress reaction. However, the increase of SOD activity in the muscle where elastomer was implanted from the double-tagged treatment indicated that the organisms were showing some reaction to the elastomer tag, similar to the increase of SOD activity under different stress conditions (Cordova et al, 2009;Sabatini et al, 2009;An and Choi, 2010).…”