Analysis of mtDNA sequences shows Japanese native chickens have multiple origins

Animal Genetics - Tập 38 Số 3 - Trang 287-293 - 2007
Oka T1, Yasuko Ino1, Kazutaka Nomura1, Shuichi Kawashima1, Takehito Kuwayama1, Hirofumi Hanada1, Takashi Amano1, Moriatsu Takada2, Naoyuki Takahata3, Yoshihiro Hayashi4, Fumihito Akishinonomiya5
1Department of Animal Science, Tokyo University of Agriculture, Kanagawa, Japan
2The Research Institute of Evolutionary Biology, Tokyo, Japan
3Department of Evolutionary Studies of Biosystems, The Graduate University for Advanced Studies, Kanagawa, Japan
4Department of Global Agricultural Science, The University of Tokyo, Tokyo, Japan
5Hayama Center for Advanced Studies, The Graduate University for Advanced Studies, Kanagawa, Japan

Tóm tắt

SummaryIn this study, we analysed the mitochondrial DNA D‐loop region of Japanese native chickens to clarify their phylogenetic relationships, possible maternal origin and routes of introduction into Japan. Seven haplogroups (Types A–G) were identified. Types A–C were observed in Jidori, Shokoku and related breeds. However, Type C was absent in Shokoku, which was introduced from China, while most Indonesian native chickens were included in the Type C haplogroup. Types D–G were observed in Shamo and related breeds. Type E had a close genetic relationship with Chinese native chickens. Our results indicate that some breeds were not introduced into Japan as suggested in conventional literature, based on low nucleotide diversity of certain chicken breeds. Sequences originating from China and Korea could be clearly distinguished from those originating from Southeast Asia. In each group, domestic chickens were divided into the Jidori‐Shokoku and Shamo groups. These results indicate that Chinese and Korean chickens were derived from Southeast Asia. Following the domestication of red junglefowl, a non‐game type chicken was developed, and it spread to China. A game type chicken was developed in each area. Both non‐game and game chickens formed the foundation of Japanese native chickens.

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Animal Genetics

Tập 38 Số 3

287-293

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