Impacts of elevated pCO(2) on Mediterranean mussel (Mytilus galloprovincialis): Metal bioaccumulation, physiological and cellular parameters

Sezer N., Kılıç Ö., Sıkdokur E., Çayır A., Belivermiş M.

MARINE ENVIRONMENTAL RESEARCH, cilt.160, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 160
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.marenvres.2020.104987
  • Dergi Adı: MARINE ENVIRONMENTAL RESEARCH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Agricultural & Environmental Science Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, Environment Index, Geobase, MEDLINE, Metadex, Pollution Abstracts, Veterinary Science Database, DIALNET, Civil Engineering Abstracts
  • Anahtar Kelimeler: Ocean acidification, Bioaccumulation, Metal, Haemocyte, Immunomarker, Filtration rate, INDUCE OXIDATIVE STRESS, EARLY-LIFE STAGES, OCEAN ACIDIFICATION, SEAWATER ACIDIFICATION, HEAVY-METALS, SUBCELLULAR-DISTRIBUTION, DREISSENA-POLYMORPHA, SILVER NANOPARTICLES, COMMON CUTTLEFISH, MARINE BIVALVES
  • İstanbul Üniversitesi Adresli: Evet

Özet

Ocean acidification alters physiology, acid-base balance and metabolic activity in marine animals. Near future elevated pCO(2) conditions could be expected to influence the bioaccumulation of metals, feeding rate and immune parameters in marine mussels. To better understand such impairments, a series of laboratory-controlled experiment was conducted by using a model marine mussel, Mytilus galloprovincialis. The mussels were exposed to three pH conditions according to the projected CO2 emissions in the near future (one ambient: 8.10 and two reduced: 7.80 and 7.50). At first, the bioconcentration of Ag and Cd was studied in both juvenile (2.5 cm) and adult (5.1 cm) mussels by using a highly sensitive radiotracer method (Ag-110m and Cd-109). The uptake and depuration kinetics were followed 21 and 30 days, respectively. The biokinetic experiments demonstrated that the effect of ocean acidification on bioconcentration was metal-specific and size-specific. The uptake, depuration and tissue distribution of Ag-110m were not affected by elevated pCO(2) in both juvenile and adult mussels, whereas Cd-109 uptake significantly increased with decreasing pH in juveniles but not in adults. Regardless of pH, Ag-110m accumulated more efficiently in juvenile mussels than adult mussels. After executing the biokinetic experiment, the perturbation was sustained by using the same mussels and the same experimental set-up, which enabled us to determine filtration rate, haemocyte viability, lysosomal membrane stability, circulating cell-free nucleic acids (ccf-NAs) and protein (ccf-protein) levels. The filtration rate and haemocyte viability gradually decreased by increasing pCO(2) level, whereas the lysosomal membrane stability, ccf-NAs, and ccf-protein levels remained unchanged in the mussels exposed to elevated pCO(2) for eighty-two days. This study suggests that acidified seawater partially shift metal bioaccumulation, physiological and cellular parameters in the mussel Mytilus galloprovincialis.