非本土西方蚊虫鱼和本土蓝太阳鱼之间的相互作用:中宇宙实验
Jessica E Rettig1, Elizabeth P Tristano1, Anthony C Burger1
1Department of Biology Denison University Granville Ohio USA.
Ecology and evolution
|November 4, 2024
概括
本地蓝太阳鱼 (Lepomis macrochirus) 可以通过竞争和掠夺来限制入侵的西方蚊虫鱼 (Gambusia affinis) 种群. 这种生物耐药性通过减少入侵物种的负面影响,有利于水生生态系统.
科学领域:
- 生态生态学 生态生态学
- 侵入性物种 生物学 生物学
- 淡水生态学 淡水生态
背景情况:
- 侵入性物种对水生生态系统产生负面影响.
- 本地物种的生物耐药性可以减轻入侵物种的影响.
- 西方蚊子鱼 (Gambusia affinis) 是一种具有高度影响力的入侵淡水鱼.
研究的目的:
- 调查本地蓝太阳鱼 (Lepomis macrochirus) 和入侵性西部蚊虫鱼 (Gambusia affinis) 之间的生态相互作用.
- 评估本地物种对入侵鱼类产生生物耐药性的潜力.
主要方法:
- 在不同的年份进行了两个中宇宙实验.
- 青少年蓝太阳鱼和成年西方蚊虫鱼被用来检查物种间和物种内部的相互作用.
- 评估了对动物浮游生物群落的影响.
主要成果:
- 观察到Lepomis macrochirus和Gambusia affinis之间的相互作用,但它们是不对称的.
- Lepomis macrochirus更受物种内部相互作用的影响,而Gambusia affinis更受物种间相互作用的影响.
- 这两种物种都减少了大型动物浮游生物的丰富性;入侵鱼类的存在减少了总体动物浮游生物.
结论:
- 本地Lepomis macrochirus可以通过竞争和协会内部掠食来减少入侵性Gambusia affinis的建立和种群维持.
- 实验中一致的结果支持本地鱼类在生物耐药性的作用.
- 控制入侵性Gambusia affinis有利于本地鱼类和整个水生社区的健康.
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