Does Myotis macrodactylus fly across the Nemuro Strait? Insights from ecological, genetic, and stable isotope analyses.

2013 Fiscal Year Final Research Report

• Project/Area Number: 23570014
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Hokkaido University
• Principal Investigator: KAWAI KUNIKO 北海道大学, 北方生物圏フィールド科学センター, 研究員 (60451415)
• Co-Investigator(Renkei-kenkyūsha): NAKASHITA Rumiko 独立行政法人森林総合研究所, 野生動物研 究領域, 研究員 (00457839)
• Project Period (FY): 2011 – 2013
• Keywords: コウモリ類 / 安定同位体比分析 / DNA解析 / 標識再捕獲法 / 流氷南限領域 / 国後島 / 知床半島

Research Abstract

The aim of this study was to elucidate why Myotis macrodactylus fly over the Nemuro Strait. This species occurs at both sides of the strait, in the Shiretoko Peninsula and in the island of Kunashir, and has been reported flying over the strait. We banded more than 1000 individuals of this bat species from Shiretoko Peninsula, over the strait and Kunashir Island, and analyzed their mitochondrial DNA, and stable isotopes from tissue samples.
The behavior of the bats flying over the strait was observed during heavy foggy days. The analysis of the stable isotopes suggested a low probability of these bats feeding over the strait. The results of the banding survey did not provide any evidence of bats flying across the Strait. However, the mitochondrial DNA analysis showed that the genetic diversity of the species on both sides of the strait is very low, suggesting that there might be some level of gene flow between Shiretoko and Kunashir, although not detectable by ecological means.

Research Products

• [Journal Article] Bats from Kunashir and Iturup Islands (2014)
  • Author(s): Kawai, K., Tiunov, M.P., Kondo, N., Antipin, M.P., Boiko, V.V., Ohtaishi, N. and Dewa, H.
  • Journal Title: Biodiversity and Biogeography of the Kuril Island and Sakhalin Volume: 4 Pages: 74-81
• [Journal Article] 択捉島中部のコウモリ類 (2013)
  • Author(s): 河合久仁子, 近藤憲久, ビクトルボイコ, 大泰司紀之
  • Journal Title: 根室歴史と自然の資料館紀要 Volume: 25 Pages: 9-20
• [Journal Article] 国後島ニキショロ海蝕洞に生息するモモジロコウモリMyotis macrodactylus (Temminck,1840) (2013)
  • Author(s): 近藤憲久, 河合久仁子, 出羽寛, マキシムアンチビン, ミハイルチウノフ, 大泰司紀之
  • Journal Title: 根室歴史と自然の資料館紀要 Volume: 25 Pages: 1-7
• [Book] 北海道のコウモリ類とその保全について.オホーツクの生態系とその保全(桜井泰憲・大島慶一郎・大泰司紀之,編) (2013)
  • Author(s): 河合久仁子
  • Total Pages: 399-407
  • Publisher: 北海道大学出版会,札幌
• [Book] コウモリ類の日露共同研究の状況とこれからの課題.オホーツクの生態系とその保全(桜井泰憲・大島慶一郎・大泰司紀之,編) (2013)
  • Author(s): 河合久仁子
  • Total Pages: 463-466
  • Publisher: 北海道大学出版会,札幌