Naslov
Fatty acid composition of different tissues of free-ranging gray wolf (Canis lupus) in Croatia

Autori
Octenjak, Daria ; Vranković, Lana ; Delaš, Ivančica ; Kusak, Josip ; Reljić, Slaven ; Huber, Đuro ; Stojević, Zvonko ; Aladrović, Jasna

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts 7th International Congress “Veterinary science and profession” / Brkljača Bottegaro, Nika ; Zdolec, Nevijo ; Vrbanac, Zoran - Zagreb : Veterinarski fakultet Sveučilišta u Zagrebu, 2017, 76-76

Skup
7th International Congress “Veterinary science and profession”

Mjesto i datum
Zagreb, Hrvatska, 05.10.2017. - 07.10.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
fatty acid composition, gray wolf, muscle, liver, adipose tissue

Sažetak
Analysis of the fatty acid (FA) composition of tissues is a research tool which can give information on the foraging patterns of free- living animals. In Croatia, research of gray wolf nutritional ecology performed so far has been based on faeces and stomach analysis, which can only show the composition of relatively recent meals. The objective of this study was a better understanding of the foraging patterns and physiological status of free ranging gray wolves, which is essential for management and conservation strategies of wildlife populations. The study was conducted on 36 animals (female, F=14 ; male, M=22) legally harvested during the years of legal quota cull from 2009 to 2012. In Lika and Gorski kotar (LGk), 19 animals were sampled, while in Dalmatia 17 animals were sampled. Samples from m. gluteus superfcialis (MG), m. vastus lateralis (MV), m. semitendinosus (MS), subcutaneous adipose tissue (SAT), perirenal adipose tissue (PAT) and liver were collected. After homogenization and lipid extraction, the FA composition of tissues was determined by gas chromatography with regard to gender, age, body mass, sampling season and sampling location. Age had a signifcant influence on the FA composition of MV, MS, both adipose tissues and liver. In the PAT older F (+2 year) had a higher percentage of C16:1t compared to younger F (p=0.04), as well as a lower percentage of C18:1t compared to older M (p=0.01). Body mass showed a signifcant influence on FA composition of MV, MS and both adipose tissues. In MV heavier M (+25 kg) had a higher percentage of C18:0 and C18:3 (p=0.02, p=0.04, respectively) compared to lighter M. The sampling season had a signifcant influence on the FA composition of all investigated tissues. Males sampled in winter had a higher percentage of C20:4n-6 in PAT (p=0.03) compared to winter F. Finally, location had a signifcant influence on the FA composition of all investigated tissues. Males from LGk had a higher percentage of C18:1t (p=0.01) in SAT than M from Dalmatia. It may be concluded that the composition of FAs, for both F and M, differs according to gender, age, body mass, sampling season and location, and probably reflects different foraging patterns.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Veterinarska medicina

POVEZANOST RADA