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Updated: Feb 5, 2026

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非本土的粉色鱼Oncorhynchus gorbuscha尸体受益于本土的盆地宏观无脊椎动物
Hui Wei1,2,3, Gordon H Copp3,4,5,6, Rasmus B Lauridsen7
1School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK.
Journal of fish biology
|February 3, 2026
概括
北大西洋河流中的侵入性粉红鱼尸体增加了盆地宏观无脊椎动物的密度,并显示了本地生物群的营养吸收. 这些来自海洋的营养素对生态系统的长期影响需要进一步研究.
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
- 营养素循环循环的过程
背景情况:
- 粉色鱼 (Oncorhynchus gorbuscha) 在北大西洋的入侵引发了生态问题.
- 侵入性鱼对非本土生态系统的影响尚不清楚.
- 从鱼中获得的海洋营养在本土范围中至关重要,但在入侵范围中却是未知的.
研究的目的:
- 调查侵入性粉红鱼尸体对盆地宏观无脊椎动物密度和社区结构的生态后果.
- 通过使用稳定的同位素,确定尸体中的营养物质是否被本地生物群同化.
- 评估入侵性鱼营养补贴的短期影响.
主要方法:
- 实验道使用了三种治疗水平:对照组,较低的尸体添加和较高的尸体添加.
- 增加了60天的粉色鱼尸体,以评估对宏观无脊椎动物的影响.
- 碳 (δ13C) 和 (δ15N) 的稳定同位素被用来追踪营养物质在本地生物体中的融入.
主要成果:
- 在高添加处理中,宏无脊椎动物的密度在尸体附近增加,这表明聚合.
- 在马体附近的大无脊椎动物和柳中,较高的δ15N值表明了从分解的鱼中吸收营养.
- 观察到小无脊椎动物的密度增加,但在60天的实验中,社区组成没有显著变化.
结论:
- 本地生物群,包括初级生产者和宏无脊椎动物,可以从侵入性粉红鱼尸体中吸收来自海洋的营养物质.
- 侵入性鱼可能会为被入侵的溪流生态系统提供营养补贴.
- 需要进一步的研究来了解这些营养补贴的长期生态影响.
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