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Impact of environmental hypercapnia on fertilization success rate and the early embryonic development of the clam Limecola balthica (Bivalvia, Tellinidae) from the southern Baltic Sea – A potential CO2 leakage case study
Swiezak, J.; Borrero-Santiago, A.R.; Sokolowski, A.; Olsen, A.J. (2018). Impact of environmental hypercapnia on fertilization success rate and the early embryonic development of the clam Limecola balthica (Bivalvia, Tellinidae) from the southern Baltic Sea – A potential CO2 leakage case study. Mar. Pollut. Bull. 136: 201-211. https://dx.doi.org/10.1016/j.marpolbul.2018.09.007
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, more
Peer reviewed article  
Available in  Authors 
Keyword
    Limecola balthica (Linnaeus, 1758) [WoRMS]
Author keywords
    Carbon capture and storage; CO2 leakage; Fertilization rate; Embryonic development; Baltic Sea
Authors  Top 
  • Swiezak, J.
  • Borrero-Santiago, A.R.
  • Sokolowski, A., more
  • Olsen, A.J.
Abstract
    Carbon capture and storage technology was developed as a tool to mitigate the increased emissions of carbon dioxide by capture, transportation, injection and storage of CO2 into subterranean reservoirs. There is, however, a risk of future CO2 leakage from sub-seabed storage sites to the sea-floor sediments and overlying water, causing a pH decrease. The aim of this study was to assess effects of CO2-induced seawater acidification on fertilization success and early embryonic development of the sediment-burrowing bivalve Limecola balthica L. from the Baltic Sea. Laboratory experiments using a CO2 enrichment system involved three different pH variants (pH 7.7 as control, pH 7.0 and pH 6.3, both representing environmental hypercapnia). The results showed significant fertilization success reduction under pH 7.0 and 6.3 and development delays at 4 and 9 h post gamete encounter. Several morphological aberrations (cell breakage, cytoplasm leakages, blastomere deformations) in the early embryos at different cleavage stages were observed.
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