2010年11月
Change of fish fauna in ponds after eradication of invasive piscivorous largemouth bass, Micropterus salmoides, in north-eastern Japan
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
- ,
- ,
- ,
- ,
- 巻
- 20
- 号
- 7
- 開始ページ
- 710
- 終了ページ
- 716
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/aqc.1143
- 出版者・発行元
- WILEY-BLACKWELL
1. The change in fish fauna was monitored in ponds within irrigation systems in Iwate prefecture, north-eastern Japan to evaluate the effectiveness of eradicating the invasive piscivorous largemouth bass, Micropterus salmoides.
2. Eleven study ponds were categorized into three pond groups: bass-dwelling (n = 3), bass-eradicated (n = 3) and non-invaded ponds (n = 5).
3. Species richness and diversity, which temporally decreased in bass-dwelling ponds, increased in bass-eradicated ponds. Furthermore, in bass-eradicated ponds, the mean numbers of topmouth minnow and freshwater goby were gradually restored, but in bass-dwelling ponds the numbers decreased and both species eventually disappeared.
4. Although the eradication of piscivorous invaders is helpful for restoring fish species diversity in ponds, its effectiveness varies among species, and other alien fish such as the rose bitterling (Rhodeus ocellatus ocellatus) often invade and proliferate in the bass-eradicated ponds.
5. To ensure successful restoration of native biota and avoid undesirable results, it is necessary to plan and implement continuous monitoring and adaptive management after eradication of alien predators. Copyright (C) 2010 John Wiley & Sons, Ltd.
2. Eleven study ponds were categorized into three pond groups: bass-dwelling (n = 3), bass-eradicated (n = 3) and non-invaded ponds (n = 5).
3. Species richness and diversity, which temporally decreased in bass-dwelling ponds, increased in bass-eradicated ponds. Furthermore, in bass-eradicated ponds, the mean numbers of topmouth minnow and freshwater goby were gradually restored, but in bass-dwelling ponds the numbers decreased and both species eventually disappeared.
4. Although the eradication of piscivorous invaders is helpful for restoring fish species diversity in ponds, its effectiveness varies among species, and other alien fish such as the rose bitterling (Rhodeus ocellatus ocellatus) often invade and proliferate in the bass-eradicated ponds.
5. To ensure successful restoration of native biota and avoid undesirable results, it is necessary to plan and implement continuous monitoring and adaptive management after eradication of alien predators. Copyright (C) 2010 John Wiley & Sons, Ltd.
- リンク情報
- ID情報
-
- DOI : 10.1002/aqc.1143
- ISSN : 1052-7613
- Web of Science ID : WOS:000284035300002