2015 Fiscal Year Final Research Report
A mechanism of adaptation by network morphology in plasmodial slime mold
| Project/Area Number |
25400430
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Biological physics/Chemical physics/Soft matter physics
|
|---|
| Research Institution | Waseda University |
|---|
Principal Investigator |
|
|---|
| Research Collaborator |
WATANABE Shin
IKARI Shusuke
YAMAGUCHI Takaki
TSUJI Kyo
TOYODA Satoshi
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | 輸送管ネットワーク / 真正粘菌 / 適応 / 最適化 |
|---|
| Outline of Final Research Achievements |
Adaptation by transportation network morphology in plasmodial slime mold, Physarum polychephalum, was investigated and the followings are revealed. Under attractive environment, it forms hierarchical mesh-type network, in which short thin tubes are dominant. The plasmodium can decentralize its function. Energy efficiency is relatively low because oxygen is consumed throughout the thin tubes. Instead, it can efficiently absorb nutrients. Under repulsive environment, the plasmodium forms dendritic networks, in which long thick tubes are dominant and the functions are centralized to them. The thick tubes are useful to explore the environment for discovering safety and attractive place. The number of thin tubes consuming oxygen is small then energy efficiency could be high. Furthermore, dynamical adaptation process by network morphology under fluctuating environment is found.
|
| Free Research Field |
生命現象の物理
|
