::: Welcome to Conservation Genome Resource Bank for Korean Wildlife :::
17_c.gif 문헌정보
17_c.gif 야생동물관련 자료 및 소식
17_c.gif 종정보
17_c.gif 보전유전학/보전생물학 자료
17_c.gif 야생동물의학 소식 및 자료
  - 천연기념물의 대상
sound.gif 갤러리
sound.gif 자유게시판 (옛날 게시판)
sound.gif 관련사이트
sound.gif 자료실
sound.gif 찾아오시는 길
보전유전학/보전생물학 자료

View Article
  운영자 2007-03-19 13:27:54 | Hit : 25522 | Vote : 8140
Subject   [자료] Temporal diet changes recorded by stable isotopes in Asiatic black bear (Ursus thibetanus) hair
Isotopes Environ Health Stud. 2005 Mar;41(1):87-94.

Temporal diet changes recorded by stable isotopes in Asiatic black bear (Ursus thibetanus) hair

Mizukami RN, Goto M, Izumiyama S, Yoh M, Ogura N, Hayashi H.

United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho Fuchuu, Tokyo 183-8509, Japan. nakasita@qc4.so-net.ne.jp

Carbon and nitrogen stable isotope ratios were measured in hair samples of the Asiatic black bear (Ursus thibetanus) inhabiting the Northern Japanese Alps (NJA) (n = 20) and the periphery of Nagano City (NC) (n = 6), in Nagano Prefecture, Japan. The hair of NJA bears, which did not have access to anthropogenic foods, showed lower values of d13C and d15N than that of NC bears which had access to garbage and corn fields, especially during the summer. These results reflect somewhat differing diets between the NJA and NC bears. We attempted to assess the feeding history during the hair growth cycle using the growth section analysis method. Each hair sample had been cut into 3?mm lengths from root to tip, labeled, and analyzed along the hair growth. We measured the carbon and nitrogen stable isotope ratios of each 3?mm length of hair sample from one NC bear which had been killed while raiding a corn field. The sections showed wide ranges of isotope ratios, from -23.2% to -14.6% for delta13C, and from 0.3% to 4.6% for delta15N. It was shown that the diet of this bear shifted dramatically from principally C3 plants to more C4 plants and to foods of animal origin. An analysis of the whole hair reflects just the average feeding habit during hair growth, but the present method can trace its diet history. This method can contribute to obtain precise ecological information of wildlife.

PMID: 15823859 [PubMed - indexed for MEDLINE]

 Prev   [소식] Goral information in Thai Society for the Conservation of Wild Animals
 Next   [자료] A complete mitochondrial genome sequence of Asian black bear Sichuan subspecies (Ursus thibetanus mupinensis)

Copyright 1999-2024 Zeroboard / skin by daerew
151-742 서울특별시 관악구 신림9동 산56-1 서울대학교 수의과대학 85동 802호
Tel 02-888-2744, Fax 02-888-2754, E-mail cgrb@cgrb.org

Copyright © 2002-2004 CGRB All Rights Reserved