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The effect of oxygen on the growth of Oncorhynchus mykiss embryos with and without a chorion
Article first published online: 1 DEC 2005
DOI: 10.1111/j.1095-8649.2005.00856.x
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How to Cite
Ciuhandu, C. S., Stevens, E. D. and Wright, P. A. (2005), The effect of oxygen on the growth of Oncorhynchus mykiss embryos with and without a chorion. Journal of Fish Biology, 67: 1544–1551. doi: 10.1111/j.1095-8649.2005.00856.x
Publication History
- Issue published online: 1 DEC 2005
- Article first published online: 1 DEC 2005
- (Received 19 November 2004, Accepted 19 May 2005)
- Abstract
- Article
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Keywords:
- dechorionated;
- diffusion;
- dissolved oxygen;
- hyperoxia;
- hypoxia
Growth was measured in dechorionated and chorionated embryos of rainbow trout Oncorhynchus mykiss exposed to three oxygen treatments: hypoxia, normoxia and hyperoxia (nominally 5, 10 and 15 mg l−1). Dechorionated embryos grew faster than chorionated ones in all three oxygen treatments. Similar patterns, however, were found in both dechorionated and chorionated groups; embryos exposed to hypoxia grew less than normoxic and hyperoxic exposed embryos. Moreover, there was no significant interaction between the effect of oxygen levels and presence or absence of the chorion on growth after hatching. These results suggest that the effect of oxygen on growth was not affected by the presence of the chorion.