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Ecological and population genetical studies on hybridization and on the process of speciation among baboon species

Research Project

Project/Area Number 04041084
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionField Research
Research InstitutionMiyazaki University

Principal Investigator

IWAMOTO Toshitaka  Faculty of Education, Miyazaki University, 教育学部, 教授 (40094073)

Co-Investigator(Kenkyū-buntansha) ツルハ アデフリス  アジスアベバ大学, 講師
TEFERI Gamechu  Faculty of Science, Addis Abeba University, 助教授
HOSHINO Jiro  Himeji Dokkyo University, 助教授 (60199479)
SHOTAKE Takayosi  Primate Research Institute, Kyoto University, 霊長類研究所, 教授 (00003103)
MORI Akio  Primate Research Institute, Kyoto University, 霊長類研究所, 助教授 (50027504)
KAWAI Masao  Japan Monkey Center, 所長 (10027477)
TURGA Adefris  Faculty of Science, Addis Abeba University
ラフェリ ゲメチュ  アジスアベバ大学, 理学部, 助教授
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥20,000,000 (Direct Cost: ¥20,000,000)
Fiscal Year 1993: ¥10,000,000 (Direct Cost: ¥10,000,000)
Fiscal Year 1992: ¥10,000,000 (Direct Cost: ¥10,000,000)
Keywordshybridization / gelada baboon / hamadryas baboon / adaptive radiation / primate society / feeding ecology / inter-specific competition / population genetics / 雑種形成 / 霊長類の集団遺伝
Research Abstract

The objectives of this project are two : One is to clarify the process of hybridization of Papio hamadryas and P.anubis, and other is to understand the speciation process of baboon species involving genus Papio and Theorpithecus.
Our intensive survey in Arusi and Bale region locating at South-Abyssinian highland suggested a more complex process of hybridization of two baboon species than that has reported so far in Awash where a single cline of hybridization is observed. Especially, near Sebaja in Bale region, where habitat conditions are more preferable to anubis, we found a complex mosaic pattern of distribution among anubis, hamadryas and hybrid populations, depending on the microtopography. It implies a process of invasive dispersion by hamadryas to the habitat of anubis baboon.
The gelada population which was found by Mori et al. (1991) in Arusi region coexisted with hamadryas baboon by sharing the cliff face as sleeping and feeding site. Our ecological and sociological studies sugg … More ested that the sympatric living of these two Papionini are possible by enough segregation of food habit, activity pattern and rage use. They usually encounter and easily mix each other, although small conflicts sometimes occur and gelada baboon groups show subordinate behavioral patterns. Considering their ordinary encounters, there is a possibility of hybridization beyond genus which is an important theme to be studied further.
This gelada population was found to adapt to the most arid and low altitude habitat among gelada populations known so far. It shows abnormally high proportion of fruit and seed eating and high moving activities as well as frequent long distant calls among unit males, all which has not found in other gelada populations. These behavioral differences imply the high habitat-adaptability of this conservative species and a possibility of genetical separation of this population from those living on the North-Abyssinian highland.
Although our project has not proceeded as the initial plan disturbed by unexpected political confusion in Ethiopia, we could obtain good results suggesting that the hybridization and complex distribution of three baboon species on Abyssinian highland are mainly brought by the strong adaptive and dispersive ability of hamadryas baboon invading to the original habitats of other two species. Less

Report

(2 results)
  • 1993 Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] T.Iwamoto: "Food digestion and energetic conditions in Theropithecus gelada" Theropithecus:The rise & fall of primate genus (ed.by N.Jabloski).Cambrdige University Press. 453-463 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Iwamoto: "The ecology of Theropithecus gelada" Theropithecus:The rise & fall of primate genus (ed.by N.Jabloski).Cambrdige University Press. 441-452 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 岩本俊孝: "エチオピア高原におけるヒヒ類の雑種化と種分化過程に関する研究" 日本熱帯生態学会ニューズレター. No.11. 1-5 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Iwamoto: "Feeding habit of gelada baboons living in a disturbed habitat." Primates. (投稿準備中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Iwamoto: "Feeding habit and activity rhythms of gelada baboons in an arid zone." Primates. (投稿準備中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] A.Mori & M.Kawai: "Mating strategies of gelada baboons." Primates. (投稿準備中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] A.Mori & T.Iwamoto: "Hybridization between Papio hamadryas and P.anubis along south bank of the Wabi-Shebeli river,Ethiopia" Primates. (投稿準備中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Shotake: "Breeding history of gelada baboon judging from genetic variability" Primates. (投稿準備中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] J.Hoshino: "Sociological studies on all-male-group of gelada baboons." Primates. (投稿準備中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] J.Hoshino: "Sociological studies on subordinate adult males in one-male-unit of gelada baboons." Primates. (投稿準備中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Shotake: "Effective population size of gelada baboon in Semien Mountains,Ethiopia." Primates. (投稿準備中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toshitaka Iwamoto: "Food digestion and energetic conditions in Theropithecus gelada." Theropithecus : The rise and fall of a primate genus. Cambridg. Univ P.453-463 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toshitaka Iwamoto: "The ecology of gelada baboons." Theropithecus : The rise and fall of a primate genus. Cambridge. Univ. P.441-452 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toshitaka Iwamoto: "Hybridization and spciation of baboon spcecies on Ethiopia highland. (in Japanese)" Japan Society of Tropical Ecology, News Letter. 11. 1-5 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toshitaka Iwamoto: "Feeding habit of gelada baboons living in a disturbed habitat." Primates. (in preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toshitaka Iwamoto: "Feeding habits and activity rhythms of gelada baboons in an arid zone." Primates. (in preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Akio Mori & Masao Kawai: "Mating strategies of gelada baboons." Primates. (in preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Akio Mori & Toshitaka Iwamoto: "Hybridization between Papio hamadryas and P.anubis along bank of the Wabi-Shebeli river, Ethiopia." Primates. (in preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Takayoshi Shotake: "Breeding history of gelada baboon judging from genetic variability." Primates. (in preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Takayoshi Shotake: "Effective population size of gelada baboon in Semien Mountains, Ethiopia" Primates. (in preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Jiro Hoshino: "Sociological studies on all-male-group of gelada baboons." Primates. (in preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Jiro Hoshino: "Sociological studies on subordinate adult males in one-male-unit of gelada baboons." Primates. (in preparation).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Iwamoto: "Food digestion and energetic conditions in Theropithecus gelada." Theropithecus:The rise & fall of a primate genus(ed.by N.Jablonski).Cambridge University Press. 453-463 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Iwamoto: "The ecology of Theropithecus gelada." Theropithecus:The rise & fall of a primate genus(ed.by N.Jablonski).Cambridge University Press. 441-452 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] A.Mori & M.Kawai: "Mating strategies of gelada babons." Primates.

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Shotaka: "Breeding history of gelada baboon judging from genetic variability." Primates.

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Iwamoto: "Feeding habit of gelada baboons living in a disturbed habitat." Primates.

    • Related Report
      1992 Annual Research Report
  • [Publications] J.Hoshino: "Integration of one male unit of gelada baboons." Primates.

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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