Using global genome approaches to address problems in cod mariculture
Goetz, Frederick W.
McCauley, Linda A. R.
Goetz, Giles W.
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A number of techniques including expressed sequence tag (EST) analysis, serial analysis of gene expression, and microarrays are available to study the global expression and regulation of genes. Many of these techniques are being used for intensively reared fish such as trout, salmon and catfish to study genes involved in growth, reproduction and health. In contrast, relatively little is known about the composition and regulation of transcriptomes in gadids. However, several bottlenecks in cod mariculture might benefit from the discovery and analysis of genes involved in reproduction, growth and disease. As a result, we have begun EST analysis of genes in the cod ovary. Complimentary DNA (cDNA) libraries of cod ovaries taken from females at oocyte final maturation and ovulation have been constructed, and 1,361 ESTs have been analyzed. As expected, several oocyte-related genes were observed including various zona pellucida egg membrane proteins. However, pivotal cell cycle regulators such as cyclins, genes involved in the regulation of apoptosis such as the Bcl-2-related ovarian killer protein, and hormone receptor components were also observed. Finally, a cDNA for a potential novel cod antifreeze protein was observed 12 times, suggesting the existence of a cod egg-specific antifreeze protein.
Author Posting. © The Authors, 2005. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in ICES Journal of Marine Science 63 (2006): 393-399, doi:10.1016/j.icesjms.2005.10.006.
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