2023 Fiscal Year Final Research Report
Elucidation of the influence of differences in epiphytic substrates on the dispersal ability and geographical genetic structure of seaweeds
| Project/Area Number |
21K06304
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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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| Review Section |
Basic Section 45030:Biodiversity and systematics-related
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| Research Institution | Kitasato University (2022-2023)
Kobe University (2021) |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 地理的遺伝構造 / 海藻類 |
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| Outline of Final Research Achievements |
The dispersal ability and geographical distribution of several macro algal species were investigated, based on the differences in genetic diversity between and within regional populations. The macro algal species, that are widely distributed along the coast of Japan, and whose main epiphyte substrates differ among closely related species, were focused. The aim was to clarify the genetic structure and the effects of different epiphyte substrates. As the results of genetic analyses, no geographical genetic structure was observed in Petalonia fascia. On the other hand, P. binghamiae, a closely related species, had a clear geographical genetic structure.
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| Free Research Field |
大型藻類の系統分類，生物地理，保全
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| Academic Significance and Societal Importance of the Research Achievements |
海洋生物の地域集団間の遺伝的分化の程度や種内の地理的遺伝構造には，分散能力の違いが大きな影響を及ぼすことが明らかになっている。気泡の有無などにより種間の浮力の違いが非常に大きい海藻類は，分散能力の違いと遺伝的分化の関係について研究するのに非常に適した生物であるが，日本沿岸に生育する海藻類の分散能力については未だ不明な点が多い。
本研究は，褐藻類の近縁種を対象として比較解析を行い，着生基質の違いによる分散能力の違いが影響したと推測される地理的遺伝構造の有無を明らかにした。この点において学術的な意義があるものと考える。
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