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| Titel |
Near-future levels of ocean acidification do not affect sperm motility and fertilization kinetics in the oyster Crassostrea gigas |
| VerfasserIn |
J. N. Havenhand, P. Schlegel |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 6, no. 12 ; Nr. 6, no. 12 (2009-12-15), S.3009-3015 |
| Datensatznummer |
250004227
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| Publikation (Nr.) |
 copernicus.org/bg-6-3009-2009.pdf |
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| Zusammenfassung |
| An increasing number of studies are now reporting the effects of ocean
acidification on a broad range of marine species, processes and systems.
Many of these are investigating the sensitive early life-history stages that
several major reviews have highlighted as being potentially most susceptible
to ocean acidification. Nonetheless there remain few investigations of the
effects of ocean acidification on the very earliest, and critical, process
of fertilization, and still fewer that have investigated levels of ocean
acidification relevant for the coming century. Here we report the effects of
near-future levels of ocean acidification (≈−0.35 pH unit change)
on sperm swimming speed, sperm motility, and fertilization kinetics in a
population of the Pacific oyster Crassostrea gigas from western Sweden. We found no
significant effect of ocean acidification – a result that was well-supported
by power analysis. Similar findings from Japan suggest that this may be a
globally robust result, and we emphasise the need for experiments on
multiple populations from throughout a species' range. We also discuss the
importance of sound experimental design and power analysis in meaningful
interpretation of non-significant results. |
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