Potential emigration of Siberian cattle germplasm on Chirikof Island, Alaska

Journal of genetics

L. J. ALEXANDER¹  Z. I. IVANOVA⁹  A. MILLBROOKE²  I. A. AMMOSOV⁵  M. A. CRONIN10⁴  M. OZEROV⁷  R. G. POPOV⁶  M. D. MACNEIL1 2⁸  J. KANTANEN³ 

[1] USDA Agricultural Research Service, 243 Fort Keogh Road, Miles City, MT 59301, USA$$;Embry-Riddle Aeronautical University, Daytona, Beach, FL 32114, USA$$;Green Technology, Natural Resources Institute Finland, Myllytie 1, FI-31600 Jokioinen, Finland$$;University of Alaska School of Natural Resources and Extension, Palmer, AK 99645, USA$$;Board of Agricultural Office of Eveno-Bytantaj Region, Batagay-Alyta 678580, The Sakha Republic (Yakutia), Russia$$;Yakutian Research Institute of Agriculture (FGBNU Yakutskij NIISH), 677001 Yakutsk, ul. Bestyzhevo-Marlinskogo 23/1, The Sakha Republic (Yakutia), Russia$$;Department of Biology, University of Turku, Turku 20014, Finland$$;Delta G, 145 Ice Cave Rd, Miles City, MT 59301, USA$$;Autumnwood Ct SE 22344, Yelm WA 98597, United States$$

关键词: adaptation;    agricultural history;    feral livestock;    genetic diversity;    microsatellites.;   

DOI  :  

学科分类：生物科学（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Feral cattle residing in Chirikof Island, Alaska, are relatively distinct from breeds used in commercial production in North America. However, preliminary evidence suggested that they exhibit substantial genetic relationship with cattle fromYakutian region of Siberia. Thus, our objective was to further elucidate quantify the origins, admixture and divergence of the Chirikof Island cattle relative to cattle from Siberia and USA. Subject animals were genotyped at 15 microsatellite loci.Compared with Turano–Mongolian and North American cattle, Chirikof Island cattle had similar variation, with slightly less observed heterozygosity, fewer alleles per locus and a positive fixation index. Analysis of the genetic distances revealed two primary clusters; one that contained the North American breeds and the Kazakh White head, and a second that contained the Yakutian and Kalmyk breeds, and the Chirikof population. Thus, it is suggested that Chirikof Island cattle may be a composite of British breeds emanating from North America and Turano–Mongolian cattle. A potential founder effect, consistent withhistorical records of the Russian–American period, may contribute to the adaptation of the Chirikof Island cattle to their harsh high-latitude environment. Further study of adaptive mechanisms manifest by these cattle is warranted.

【 授权许可】

Unknown