@article{oai:nodai.repo.nii.ac.jp:00000603, author = {菅野, 貴久 and 金岩, 稔 and Kanno, Takahisa and Kanaiwa, Minoru}, issue = {1}, month = {Jun}, note = {2015年11月4日,北海道北見市内の野付牛公園内において国内外来種のモツゴを採捕した。このことは,オホーツク海側近辺域に本種が分布することを明らかにした初めての報告になる。侵入の経路は不明だが,過去に近隣で販売されていたことから飼育個体の遺棄や,他生物の放流時に混入した可能性が考えられる。また,当歳サイズの個体も採捕され,池内で再生産している可能性が高いと考えられた。今後は,定着の有無と在来種への影響を確認するため,モニタリングの継続とともに,更なる分布拡大を防ぎ,地域住民への啓蒙活動を進めるべきである。, The alien species topmouth gudgeon (Pseudorasbora parva) was captured in the lake at Notsukeushi Park, Kitami, Hokkaido on November 4, 2015. This study is the first report on the discovery of topmouth gudgeon observed around the area near the coast of the Okhotsk Sea. The reproductive status and the introduction process in Notsukeushi Park are currently unknown. However, the probability of reproduction is high because a fish measuring 32mm was observed and was considered to be a the yearling fish. There are two possibilities for the introduction: one is that topmouth gudgeon was sold around the area, and might have been dumped. The other is that other fishes were released into the lake and topmouth gudgeon was accidentally introduced with them. We should continue monitoring to confirm whether topmouth gudgeon has already been established in Notsukeushi Park and what the impact on the native species is. Then we have to develop methods to prevent the further spread of this species and bring awareness to the general public., E, 6, 短報, Note}, pages = {48--50}, title = {北海道北見市内での国内外来種モツゴの発見}, volume = {61}, year = {2016}, yomi = {カンノ, タカヒサ and カナイワ, ミノル} }