Neutral lipid compositions of antarctic fish tissues may reflect use of fatty acyl substrates by catabolic systems
✍ Scribed by E. D. Lund; B. D. Sidell
- Book ID
- 104737936
- Publisher
- Springer-Verlag
- Year
- 1992
- Tongue
- English
- Weight
- 645 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0025-3162
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✦ Synopsis
Antarctic fishes contain large quantities of lipid in adipose tissue, blood and oxidative muscle. In this study, the fatty acyl compositions of free fatty acids (FFA) and triacylglycerol (TAG) in serum, adipose tissue and oxidative muscle were determined in two species of Antarctic fishes, Trematomus newnesi Boulenger, 1902, and Notothenia gibberifrons L6nnberg, 1905, collected off the Antarctic Peninsula in February and March 1987. Total lipid contents of serum and oxidative muscle in each species also were measured. T. newnesi, a mesopelagic species, has significantly more lipid in the serum than N. gibberifrons, a demersal species (17.6 + 2.4 and 10.4 + 1.0 mg lipid g-1 serum, respectively). The oxidative muscle of T. newnesi also contains more lipid than does that of N. gibberifrons (12.5 and 9.3% by dry weight, respectively). Fatty acids comprising greater than 5% of one or more of the lipid pools assayed in both