Speciation and secondary contact between two Sulawesi macaque species

2017 Fiscal Year Final Research Report

• Project/Area Number: 26304008
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Evolutionary biology
• Research Institution: The Graduate University for Advanced Studies
• Principal Investigator: Terai Yohey 総合研究大学院大学, 先導科学研究科, 助教(特定有期雇用) (30432016)
• Co-Investigator(Kenkyū-buntansha): 松村 秀一 岐阜大学, 応用生物科学部, 教授 (30273535) ; 今井 啓雄 京都大学, 霊長類研究所, 准教授 (60314176)
• Research Collaborator: Suryobroto Bambang ボゴール農科大学, 講師 ; Arum Widayati Kanthi ボゴール農科大学, 講師
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 種分化 / 環境適応 / 集団ゲノム解析 / マカク / 食性の適応

Outline of Final Research Achievements

The Sulawesi macaque species endemic to island of Sulawesi (Central Indonesia) have differentiated into seven morphologically distinct species in seven allopatric areas. The evolution of these species has been studied, however the evolutionary process and its genetic basis are still unclear. We determined exome sequences of seven species. The analyses of these data showed that the speciation of Sulawesi macaques has occurred in Sulawesi island just after the migration of common ancestral species of these macaques. Most of the SNPs were observed in one species (~90%) or shared between M. tonkeana and M. hecki, whereas a handful of SNPs were fixed differences. These fixed differences were located in ~100 genes including genes responsible for olfaction, and detoxification. These results demonstrate that the small number of genes with fixed differences may be responsible for local adaption and for preventing expansion of hybrid zones.

Free Research Field

分子進化生態学