| Budget Amount *help |
¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2014: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2011: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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| Outline of Final Research Achievements |
Synchronous and asynchronous mating periods are widely observed in both the plant and animal kingdoms, and females may use this phenomenon as a reproductive strategy. It is prospected that females asynchronize estrus and choose mates strictly because paternal investment is of minor contribution for survival of offspring in anubis baboons.
The purpose of this study was to clarify whether females of anubis baboons show estrous asynchrony, and to figure out what is behind estrous asynchrony. We developed a novel index and utilized a randomization procedure to analyze estrous synchrony in plural groups of baboons living in the Gombe Stream National Park, Tanzania. Contrary to our prediction, female estrous days overlapped randomly. Therefore it is thought that mate competition among males was less severe. The higher ranking males (alpha and beta males) had sired almost a half of infants.
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