Catch and efforts in eradication program of largemouth bass (Micropterus nigricans) in Kanabara Dam Lake, Nagano Prefecture, Japan

<p>  </p> <p>Catch and efforts in eradication program of largemouth bass (<em>Micropterus nigricans</em>) in Kanabara Dam Lake, Nagano Prefecture, Japan. Operating since 2007, the program includes the removal of spawning beds via snorkelling; removal of larvae and fry through scooping; and capture of immature and adult fish via net traps, cast nets, gill nets, fishing, and spear guns, and by hand. The <em>M. nigricans</em> population was monitored via snorkelling and environmental DNA analysis. Net traps were effective for capturing smaller fish, whereas 3-meter-long gill nets and spear guns were effective for larger fish.</p>