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Chromosome Studies of Sika Deer

Author: YangChun
Tutor: CaiZhiHua
School: Chongqing Normal University
Course: Zoology
Keywords: Sika deer Chromosome G-band
CLC: S865.42
Type: Master's thesis
Year: 2005
Downloads: 146
Quote: 3
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Abstract

Sika deer (Cervus nippon) membership Artiodactyla, Cervidae, deer genus, ruminant mammals. The original six subspecies of sika deer, there are only two sub-species in the Northeast and Sichuan. Which all of Northeast Asia domesticated species, chromosome 66. Sika deer are expensive delicacies and traditional medicinal beasts have high economic value. Serious damage to their habitat, the the existing wild deer populations of less than 1000 due to the long face of enormous hunting pressure and human activities, and on the verge of extinction. In order to save the species, the Chinese government in 1978 was listed as national key protected species to be protected, and the IUCN Red List is listed as endangered animal. , Biological trait is subject to the control of their genetic material contained on the level of cells (chromosome). As the main carriers of the genetic material in the chromosomes, when its structure or change in the number of bound on the genetic variation and evolutionary impact. All creatures chromosome variation on the structure and number, will cause organisms karyotype change. Therefore, through analysis of the chromosomes of an organism, we can understand the origin and evolution and genetic variation law to determine the biological kinship. The fewer domestic sika chromosome, sika deer research focuses on the biochemistry, physiology, and other aspects. In order to better development and utilization of sika and improve the economic efficiency of the sika deer, sika chromosome preliminary study. Chongqing Yongchuan City, Pine both senior vocational schools farms, the test sika deer as the research object, using peripheral blood lymphocytes prepare chromosome samples by trypsin G-banding technique, on the sika chromosome preliminary research shows sika karyotype G band type. Sika deer and other deer species karyotype explore their similarities and differences, as well as more appropriate for the sika deer karyotype classification method to explore the correlation between its performance and production, and on the basis of sika deer karyotype parameters, sex. Naming system, reference ISCNDA (1989) International Livestock cytogenetics to draw Figure G-banding pattern of the sika deer, sika deer chromosomal aberrations and gene mapping provide a valuable reference. Sika haplotype genome chromosome band displayed number 248, including the X and Y chromosomes, wherein the X chromosome is the smallest chromosome, while the Y chromosome is the largest chromosome. Deer chromosome number in the medium term will be different, the proposed mechanism of sika changes in chromosome number. This article describes the development process of the animal chromosome study then of chromosome modern research level, with points from the initial karyotype to chromosome fluorescence in situ hybridization (FISH) and microsatellite sequence tag to gene mapping, the last of chromosome research prospected.

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CLC: > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Hunting,domestication of wild animals > A variety of wild animal domestication > Medicinal animals > Deer
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