2012 Fiscal Year Final Research Report
Adaptive significance of dwarf males in deep-sea barnacles
| Project/Area Number |
22570020
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Ecology/Environment
|
|---|
| Research Institution | Nara Women's University |
|---|
Principal Investigator |
YUSA Yoichi 奈良女子大学, 自然科学系, 教授 (60355641)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
IWAGUCHI Shinichi 奈良女子大学, 自然科学系, 准教授 (40263420)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Keywords | 矮雄 / 精子競争 / 適応度 / 性表現 / 蔓脚類 |
|---|
| Research Abstract |
The adaptive significance of dwarf males is addressed in deep-sea barnacles. First, microsatellite markers were developed in Scalpellum stearnsii, and the reproductive success of their dwarf males was studied. Small males attained higher reproductive success than larger ones. Second, life history traits were studied and some pieces of information were obtained in this species and in a related species, S. scalpellum, in situ and/or in the aquarium. Third, using mathematical models and theoretical synthesis by reviewing relevant studies, it was suggested that dwarf males evolved under low-density conditions.
|
