Study on the evolution of sexual traits and sperm characteristics in marine sculpins with diverse reproductive strategies
Project/Area Number |
24770016
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Ecology/Environment
|
Research Institution | Niigata University |
Principal Investigator |
AWATA Satoshi 新潟大学, 自然科学系, 助教 (60569002)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
Keywords | 海産カジカ / 性淘汰 / 精子競争 / 交尾 / 親子判定 / 系統関係 |
Outline of Final Research Achievements |
Marine sculpins exhibit diverse reproductive modes and parental behaviors within a family Cottidae: non-copulatory with paternal care, copulatory with paternal care, copulatory with maternal care and copulatory with no-care. In the present study, the effects of reproductive modes and the mode of parental care on the evolution of sexual traits (male genitalia and sexual dimorphism) and sperm characteristics (sperm morphology and motility) were investigated in 18 species of marine sculpins showing different reproductive behaviors. The results showed that reproductive modes and the modes of parental care were significantly associated with sexual traits and sperm characteristics, suggesting that sexual traits and sperm may have evolved in relation to changes in reproductive behaviors.
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Report
(4 results)
Research Products
(26 results)
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[Journal Article] Group composition, relatedness, and dispersal in the cooperatively breeding cichlid Neolamprologus obscurus.2015
Author(s)
Tanaka, H., Heg, D., Takeshima, H., Takeyama, T., Awata, S., Nishida, M. & Kohda, M.
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Journal Title
Behavioral Ecology and Sociobiology
Volume: 69
Issue: 2
Pages: 169-181
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Bower-building behaviour is associated with increased sperm longevity in Tanganyikan cichlids.2014
Author(s)
Morita, M., Awata, S., Yorifuji, M., Ota, K., Kohda, M. & Ochi, H.
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Journal Title
Journal of Evolutionary Biology
Volume: 27
Issue: 12
Pages: 2629-2643
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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