Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Biogeosciences, 7, 3915-3919, 2010
http://www.biogeosciences.net/7/3915/2010/
doi:10.5194/bg-7-3915-2010
© Author(s) 2010. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
01 Dec 2010
Effect of ocean acidification on marine fish sperm (Baltic cod: Gadus morhua)
A. Y. Frommel1, V. Stiebens1, C. Clemmesen1, and J. Havenhand2 1Leibniz-Institute of Marine Sciences IFM-GEOMAR, Duesternbrooker Weg 20, 24105 Kiel, Germany
2Dept. of Marine Ecology – Tjärnö, University of Gothenburg 45296 Strömstad, Sweden
Abstract. Ocean acidification, as a consequence of increasing marine pCO2, may have severe effects on the physiology of marine organisms. However, experimental studies remain scarce, in particular concerning fish. While adults will most likely remain relatively unaffected by changes in seawater pH, early life-history stages are potentially more sensitive – particularly the critical stage of fertilization, in which sperm motility plays a central role. In this study, the effects of ocean acidification (decrease of pHT to 7.55) on sperm motility of Baltic cod, Gadus morhua, were assessed. We found no significant effect of decreased pH on sperm speed, rate of change of direction or percent motility for the population of cod analyzed. We predict that future ocean acidification will probably not pose a problem for sperm behavior, and hence fertilization success, of Baltic cod.

Citation: Frommel, A. Y., Stiebens, V., Clemmesen, C., and Havenhand, J.: Effect of ocean acidification on marine fish sperm (Baltic cod: Gadus morhua), Biogeosciences, 7, 3915-3919, doi:10.5194/bg-7-3915-2010, 2010.
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