Seasonal changes in the neutral and polar lipid fatty acid content of female northern pike (Esox lucius L.)
| Autor: | Karl Schwalme, William C. Mackay |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
chemistry.chemical_classification
Wet weight biology Fatty acid Ovary Polar lipids biology.organism_classification Neutral lipid Carcass weight Animal science medicine.anatomical_structure Biochemistry chemistry medicine lipids (amino acids peptides and proteins) Animal Science and Zoology computer Ecology Evolution Behavior and Systematics Esox Pike computer.programming_language |
| Zdroj: | Canadian Journal of Zoology. 70:280-287 |
| ISSN: | 1480-3283 0008-4301 |
| DOI: | 10.1139/z92-042 |
| Popis: | We quantified seasonal changes in the total fatty acid content and the content of major fatty acid classes (i.e., saturates, polyunsaturates, etc.) in the neutral lipids and polar lipids of ovaries, liver, white muscle, and adipopancreatic tissue of female northern pike in central Alberta. Concentrations (percent wet weight) of polar lipid fatty acids (PLFAs) increased during fall and winter in all the organs and tissues examined. As the ovaries were recrudescing between July and March, ovary PLFA content increased from 0.03 to 4.60 g and the combined PLFA content of the three somatic tissues increased from 1.87 to 2.68 g (quantities are expressed per kilogram carcass weight of pike). During this period the quantity of neutral lipid fatty acids (NLFAs) (per kilogram of carcass weight) in the ovary increased from 0.01 to 1.95 g and liver NLFA content decreased from 0.60 to 0.14 g. The NLFA content of adipopancreatic tissue was 3.5–5.5 g/kg carcass weight and that in muscle was 2–4 g/kg carcass weight, but neither showed significant seasonal variation. There were no significant seasonal changes in either the total fatty acid content or the content of any fatty acid class in the combined neutral lipids or combined total lipids (neutral lipids plus polar lipids) of the three somatic tissues. Thus, there do not appear to be large seasonal transfers of fatty acids from somatic to ovarian tissues or from neutral to polar lipids in female pike. |
| Databáze: | OpenAIRE |
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