EXTENDED ABSTRACT ONLY- DO NOT CITE
Substantial data exist demonstrating that activation of thyroid hormone production accompanies periods of active growth in fish. Whereas this suggests that thyroid hormones function to promote growth in fish, clear evidence for their direct role in the cellular processes of fish growth remains elusi...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.619.3444 http://www-heb.pac.dfo-mpo.gc.ca/congress/2002/Growth/MacKenzie.pdf |
| Summary: | Substantial data exist demonstrating that activation of thyroid hormone production accompanies periods of active growth in fish. Whereas this suggests that thyroid hormones function to promote growth in fish, clear evidence for their direct role in the cellular processes of fish growth remains elusive (Leatherland, 1994). Our objective has been to develop model warm water species in which to study the regulation and action of thyroid hormones during periods of rapid growth, in comparison to the extensive literature for cold water salmonids. We sought species which are used in aquaculture, but also exhibit rapid juvenile growth, elevated thyroid hormone levels, and the opportunity for controlled studies in the laboratory and under natural or semi-natural conditions. These traits are evident in two warm water teleost species, the channel catfish (Ictalurus punctatus), and the red drum (Sciaenops ocellatus). Whereas channel catfish are a fresh water siluriform species with extensive information on nutritive and environmental requirements for growth, red drum are an estuarine perciform species for which basic information on aquacultural requirements is |
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