2023 Fiscal Year Final Research Report

E mergent effects of landscape heterogeneity on life history variation and population stability

Research Project

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Project/Area Number	20KK0163
Research Category	Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
Allocation Type	Multi-year Fund
Review Section	Medium-sized Section 45:Biology at organismal to population levels and anthropology, and related fields
Research Institution	Kyoto University (2021-2023) Kobe University (2020)
Principal Investigator	Sato Takuya 京都大学, 生態学研究センター, 准教授 (30456743)
Co-Investigator(Kenkyū-buntansha)	小関右介大妻女子大学, 家政学部, 准教授 (00513772) 勝村啓史北里大学, 医学部, 准教授 (10649544) 立木佑弥東京都立大学, 理学研究科, 助教 (40741799) 武島弘彦東海大学, 海洋学部, 特定研究員 (50573086) 秋田鉄也国立研究開発法人水産研究・教育機構, 水産資源研究所(横浜), 主任研究員 (60625507)
Project Period (FY)	2020-10-27 – 2024-03-31
Keywords	ポートフォリオ / カワマス / 家系分析 / SNP / 生活史多様性
Outline of Final Research Achievements	The processes that generate and maintain life history variation is fundamentally important for long-term persistence of populations and species, and sustainable resource management and conservation. In this project, we aimed to test the emergent effects of landscape heterogeneities (i.e., ecosystem linkages and habitat connectivity) on variation in life-history and population stability of west brook trout (Salvelinus fontinalis) in a river network of western Massachusetts, USA. To do this, we constructed the reference genome of the brook trout studies and developed an analytical pipeline to conduct high-resolution pedigree analysis. At present, we are conducting analyses that integrate molecular data and life-history data.
Free Research Field	個体群生態学
Academic Significance and Societal Importance of the Research Achievements	本研究は、自然生態系において、生活史の多様性維持によってポートフォリオ効果が成立する仕組みを体系的に理解するという学術的意義をもつ。この問いが解決されれば、変動環境下における集団動態の予測性を高めることができ、持続的な生物資源利用にも実質的な貢献を果たすことができる。