An evolutionary perspective on the diversification of shape in fishes: lessons from Sebastidae and Cottidae

2016 Fiscal Year Final Research Report

• Project/Area Number: 26440212
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: Kyoto University
• Principal Investigator: Kai Yoshiaki 京都大学, フィールド科学教育研究センター, 助教 (30379036)
• Research Collaborator: Orr James W. ワシントン大学, バーク博物館, 連携研究員 ; Stevenson Duane E. ワシントン大学, バーク博物館, 連携研究員 ; KIM Jin-Koo 釜慶大学, 海洋生物学部, 教授
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 生物多様性 / 形態学 / 進化 / 分子系統

Outline of Final Research Achievements

Fishes exhibit an enormous diversity in their shapes, but little is known about how they have acquired and evolved. In this study, the pattern of shape evolution was evaluated by using a geometric morphometric approach and compared with a molecular phylogenetic hypothesis, focusing on the species-rich groups, family Sebastidae and Cottidae. Both members have been speciated mainly in the North Pacific. In the species of Sebastidae, the shape has been evolved associated with the habitat characteristics, however, in the species of Cottidae, it has no correlation with the latters. Therefore, the evolutionary history of shape variation in those two families are quite different.

Free Research Field

魚類系統分類学