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The Lipid Composition of Subcutaneous Adipose Tissue of Brown Bears (Ursus arctos) in Croatia

Vranković, Lana; Delaš, Ivančica; Reljić, Slaven; Huber, Đuro; Maltar-Strmečki, Nadica; Klobučar, Karla; Krivić, Gabriela; Stojević, Zvonko; Aladrović, Jasna (2017) The Lipid Composition of Subcutaneous Adipose Tissue of Brown Bears (Ursus arctos) in Croatia. Physiological and biochemical zoology, 90 (3). pp. 399-406. ISSN 1522-2152

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The composition of adipose tissue in brown bears (Ursus arctos) is highly variable and depends on an individual’s feeding habits. Fatty acid composition of subcutaneous adipose tissue (SAT) may provide insight into brown bear feeding habits, for which data are scarce. The aim of this study was to determine the lipid composition of SAT and variations in the composition of fatty substances with regard to gender and to assess SAT relative to season and bodymass (BM)of brown bears in Croatia. Seventysix tissue samples of brown bear SAT were analyzed in this study. We found that gender, season, and BM significantly affected the lipid composition of SAT. Both females and males had higher percentages of saturated fatty acids and monounsaturated fatty acids (MUFAs) inSAT in springthan inautumn, while the percentage of polyunsaturated fatty acids (PUFAs) was higher in autumn. The prevalence of MUFAs in SAT and the greater presence of PUFAs in autumn, together with thepresence of odd- chain saturated fatty acids, indicate the importance of these fatty acids in brown bear physiology. We suggest that the lipid content of adipose tissue may provide valuable information on changes in brown bear condition in response to feeding habits and the effects of supplemental feeding.

Item Type: Article
Uncontrolled Keywords: fatty acid composition, season, supplemental feeding, phospholipids, total cholesterol, triacylglycerols
Subjects: NATURAL SCIENCES > Physics
NATURAL SCIENCES > Chemistry > Physical Chemistry
BIOMEDICINE AND HEALTHCARE > Public Health and Health Care
Divisions: Division of Physical Chemistry
Depositing User: Nadica Maltar Strmečki
Date Deposited: 07 Jun 2021 07:08
DOI: 10.1086/690913

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