Evolution of asymmetric sexes: an empirical approach to the evolution of anisogamy using a green alga
| Project/Area Number |
25291097
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Chiba University |
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Principal Investigator |
Togashi Tatsuya 千葉大学, 海洋バイオシステム研究センター, 教授 (70345007)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIMURA Jin 静岡大学, 創造科学技術大学院, 教授 (10291957)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Keywords | 異型配偶 / 性淘汰 / 精子競争 / 性的二型 |
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| Outline of Final Research Achievements |
Anisogamy (mating system where gamete size is different between the two sexes) causes sexual selection through sperm competition. Therefore, answering questions on the mechanisms of the evolution of anisogamy is the most fundamental approach to understand the evolution of sexual dimorphism in morphology and behavior. In this research, we obtained the first empirical supports to the two important theoretical assumptions on 1) the role of male gametic resources to improve the fitness of a zygote and 2) the relationship between zygote size and its fitness, by focusing on several useful traits of a green alga.
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Report
(4 results)
Research Products
(49 results)
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[Journal Article] The contribution of seed dispersers to tree species diversity in tropical rainforests.2015
Author(s)
Kakishima S, Morita S, Yoshida K, Ishida A, Hayashi S, Asami T, Ito H, Miller DG, Uehara T, Mori S, Hasegawa E, Matsuura K, Kasuya E, Yoshimura J.
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Journal Title
Royal Society Open Science
Volume: 2
Issue: 10
Pages: 1-11
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Microhabitat locality allows multi-species coexistence in terrestrial plant communities.2015
Author(s)
Tubay JM, Suzuki K, Uehara T, Kakishima S, Ito H, Ishida A, Yoshida K, Mori S, Rabajante JF, Morita S, Yokozawa M, Yoshimura J.
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Journal Title
Scientific Reports
Volume: 5
Issue: 1
Pages: 1-9
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] The Distribution of Periodical Cicada (Hemiptera: Cicadidae:Magicicada) Brood II in 2013: Disjunct Emergences Suggest Complex Brood Origins.2015
Author(s)
Cooley JR, Simon C, Maier CT, Marshall D, Yoshimura J, Chiswell SM, Edwards M, Holliday C, Grantham R, Zyla J, Sanders RL, Neckermann M, Bunker G.
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Journal Title
American Entomologist
Volume: 61
Issue: 4
Pages: 245-251
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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