| Project/Area Number |
14340243
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
生態
|
|---|
| Research Institution | Shinshu University |
|---|
Principal Investigator |
NAKAMURA Hiroshi Shinshu University, Faculty of Education, Professor, 教育学部, 教授 (60135118)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
HAYASHIDA Nobuaki Shinshu University, Faculty of Textile Science & Technology, Assitance Professor, ヒト環境科学研究支援センター, 助教授 (80212158)
TAGUCHI Goro Shinshu University, Faculty of Textile Science & Technology, Lecturer, 繊維学部, 講師 (70252070)
TAKASU Fugo Nara Women's University, Faculty of Science, Assistance Professor, 理学部, 助教授 (70263423)
|
|---|
| Project Period (FY) |
2002 – 2005
|
| Project Status |
Completed (Fiscal Year 2005)
|
| Budget Amount *help |
¥13,300,000 (Direct Cost: ¥13,300,000)
Fiscal Year 2005: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 2004: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2003: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2002: ¥4,400,000 (Direct Cost: ¥4,400,000)
|
|---|
| Keywords | Common cuckoo / Brood parasitism / Co-evolution / mt-DNA / Egg mimicry / Molecular biology / International information exchange / Britain |
|---|
| Research Abstract |
The common cuckoo is divided into host-specific races (gentes). Females of each race lay a distinctive egg type that tends to match the host's eggs. It was provided genetic evidence that gentes restricted to female lineages from the fact that there is differentiation between gentes in maternally inherited mitochondrial DNA, but not in microsatellite loci of nuclear DNA. This supports recent behavioural evidence that female, but not male, common cuckoos specialize on a particular host, and is consistent with the possibility that genes affecting cuckoo egg type are located on the female-specific W sex chromosome. Our results in Japan also supported these ideas, but the host races are not so clear in Japan, due to colonization by separated ancestral lineages.
|
