Genetic relationship of Chinese and Japanese gamecocks revealed by mtDNA sequence variation

Biochemical Genetics
Yi-Ping LiuYong-Gang Yao

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...Continue Reading

References

May 20, 1999·Molecular Biology and Evolution·H J BandeltA Röhl
Apr 27, 2001·Nature·C S TroyD G Bradley
Dec 26, 2001·Bioinformatics·S KumarM Nei
Feb 12, 2002·American Journal of Human Genetics·Yong-Gang YaoYa-Ping Zhang
Nov 8, 2003·Gene·Tomoyoshi KomiyamaTakashi Gojobori
Dec 9, 2003·Molecular Biology and Evolution·Manjunath B JoshiKumarasamy Thangaraj
Nov 9, 2005·Molecular Phylogenetics and Evolution·Yi-Ping LiuYa-Ping Zhang

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Citations

Oct 30, 2008·BMC Evolutionary Biology·Da-Qian HeYong-Gang Yao
Feb 5, 2008·Biochemical Genetics·Shi-Yi ChenSong-Jia Lai
Feb 12, 2009·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·Y-P LiuT-Z Liu

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