NDLI: Genetic Relationship of Chinese and Japanese Gamecocks Revealed by mtDNA Sequence Variation

Content Provider	Springer Nature Link
Author	Liu, Yi Ping Zhu, Qing Yao, Yong Gang
Copyright Year	2006
Abstract	Cockfighting has a very long history dating back to as early as 2500 years ago in China. Cockfighting was intertwined with human cultural traditions, helped disperse chickens across the world, and influenced the subsequent breed selection. Therefore, tracing the origin of gamecocks could mirror the distribution of the cockfighting culture. In this study, we compared the available mtDNA control region sequences in Chinese and Japanese gamecocks to test the recently proposed hypothesis behind the dual origin of the Japanese cockfighting culture (from China and Southeast Asia independently). We assigned gamecock mtDNAs to different matrilineal components (or phylogenetic clades) that emerged from the phylogenetic tree and network profile, and compared the frequency differences between Chinese and Japanese gamecocks. Among the six clades (A–F) identified, Japanese gamecocks were most frequently found in clades C and D (74%, 32/43), whereas more than half of the Chinese gamecock samples (69%, 35/51) were grouped in clades A and B. Haplotypes in Japanese gamecocks assigned to clades A, B, and E were either shared with those of the Chinese samples or differed from the close Chinese types by no more than a three-mutation distance. This genetic pattern is in accordance with the proposed dual origin of Japanese gamecocks but has left room for single origin of Japanese gamecocks from China. The genetic structure of gamecocks in China and Japan might also be influenced by subsequent breed selection and conservation after the initial gamecock introduction.
Starting Page	18
Ending Page	28
Page Count	11
File Format	PDF
ISSN	00062928
Journal	Biochemical Genetics
Volume Number	44
Issue Number	1-2
e-ISSN	15734927
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2006-04-29
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mitochondrial DNA gamecock origin Douji Shamo Zoology Biochemistry Medical Microbiology Human Genetics
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine Biochemistry Molecular Biology Ecology, Evolution, Behavior and Systematics

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