特集
1998年から2018年までに諫早湾干拓調整池から得られたユスリカ幼虫
2020 年 74 巻 2 号 p. 109-114
詳細
2020 年 74 巻 2 号 p. 109-114
Eleven genera of chironomid larvae were identified in sediments of the Isahaya Bay reservoir in western Kyushu, Japan from 1998 to 2018. Since 2005, the dominant genera collected at designated sampling sites were Chironomus and Microchironomus. Larval densities of these two genera were highest in 2011 and 2012. Consequently, adult emergence was also highest in these years. Increased reproduction in these two genera is a result of eutrophication, silty sediment deposition, and algal bloom in the reservoir.
