title: The Lipid Composition of Subcutaneous Adipose Tissue of Brown Bears (Ursus arctos) in Croatia.
abstract: 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 body mass (BM) of brown bears in Croatia. Seventy-six 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) in SAT in spring than in autumn, 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 the presence 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.
authors.forename: Lana
authors.initials: L
authors.lastname: Vranković
authors.forename: Ivančica
authors.initials: I
authors.lastname: Delaš
authors.forename: Slaven
authors.initials: S
authors.lastname: Reljić
authors.forename: Đuro
authors.initials: Đ
authors.lastname: Huber
authors.forename: Nadica
authors.initials: N
authors.lastname: Maltar-Strmečki
authors.forename: Karla
authors.initials: K
authors.lastname: Klobučar
authors.forename: Gabriela
authors.initials: G
authors.lastname: Krivić
authors.forename: Zvonko
authors.initials: Z
authors.lastname: Stojević
authors.forename: Jasna
authors.initials: J
authors.lastname: Aladrović
mesh_terms: D000818:Animals; D001823:Body Composition / Q000502:physiology*; D017523:Croatia; D005260:Female; D008055:Lipids / Q000737:chemistry*; D008297:Male; D050151:Subcutaneous Fat / Q000737:chemistry* / Q000502:physiology; D001503:Ursidae / Q000502:physiology*
chemical_list: D008055:Lipids
keywords: fatty acid composition; phospholipids; season; supplemental feeding; total cholesterol; triacylglycerols