| Project/Area Number |
25440246
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
Inoue Maki 東京農工大学, (連合)農学研究科(研究院), 講師 (80512590)
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| Co-Investigator(Renkei-kenkyūsha) |
ITO Fuminori 香川大学, 農学部, 教授 (50260683)
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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 |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 外来種 / スーパーコロニー / 社会性昆虫 / 行動 / パーソナリティ / アルゼンチン |
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| Outline of Final Research Achievements |
We examined the behavioral traits among the four supercolonies introduced into Japan. Each L. humile supercolony demonstrated different behavioral traits: JM and KB exhibited strong aggressiveness toward a foreign worker, whereas KC avoided a foreign worker but exhibited more foraging activity than the others. The KA supercolony infrequently attacked a foreign worker and explored food.
We analyzed mitochondrial DNA of L. humile workers from native Argentina populations. Sequencing revealed the six clades: the first clade included JM, KB, and the populations collected across Argentina; second, KC, the eastern region and Sndes region; third, only the eastern region; fourth, Tokyo colony. Geographically genetic structure was not detected and thus the species have been expanding associated with the development of the trade along Palana River and railways.
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