Invasive Pacific lionfish Pterois volitans reduce abundance and species richness of native Bahamian coral-reef fishes
Invasive Pacific lionfish Pterois volitans reduce abundance and species richness of native Bahamian coral-reef fishes
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DOI：
10.3354/meps11159
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发表时间：
2015-03-02
影响因子：
2.5
通讯作者：
Albins, Mark A.
中科院分区：
文献类型：
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作者：
Albins, Mark A.
太平洋红狮子鱼Pterois volitans，在20世纪80年代引入大西洋沃茨，代表了一种特别成功的入侵海洋捕食者，对本地猎物有很强的影响。以前的实验研究狮子鱼对本地鱼类群落的影响已经在小块珊瑚礁上进行。然而，狮子鱼对本地珊瑚礁鱼类群落在更大的空间尺度上的保护和管理的努力，通常适用的规模还没有实验研究。从2009年6月开始，我在巴哈马群岛的Lee Stocking岛附近进行了一次大规模的实地实验。10个大型（1400至4000平方米）珊瑚礁根据位置和栖息地的相似性配对，并对其鱼类群落进行了基线调查。每季度清除的狮子鱼，然后进行1个珊瑚礁在每对，而狮子鱼的密度在其他珊瑚礁标准化后的入侵水平。到2010年8月，季度调查显示，狮子鱼造成了显着的变化，在本地珊瑚礁鱼类群落，包括减少总密度（高达46.3 +/-13.7%，平均+/- SEM），生物量（31.9 +/- 10.7%），和物种丰富度（21.4 +/- 9.1%）的猎物大小的鱼类（所有个体
Pacific red lionfish Pterois volitans, introduced to Atlantic waters in the 1980s, represent a particularly successful invasive marine predator with strong effects on native prey. Previous experiments examining the effects of lionfish on native fish communities have been conducted on small patch reefs. However, the effects of lionfish on native reef-fish communities over larger spatial scales-scales at which conservation and management efforts are typically applied-have not been examined experimentally. Beginning in June 2009, I conducted a large-scale field experiment near Lee Stocking Island, Bahamas. Ten large (1400 to 4000 m(2)) coral reefs were paired based on location and similarity of habitat, and baseline surveys of their fish communities were conducted. Quarterly removals of lionfish were then conducted on 1 reef in each pair, while the densities of lionfish on the other reefs were standardized at typical post-invasion levels. Through August 2010, quarterly surveys showed that lionfish caused significant changes in native reef-fish communities, including reductions in the total density (up to 46.3 +/- 13.7%, mean +/- SEM), biomass (31.9 +/- 10.7%), and species richness (21.4 +/- 9.1%) of prey-sized fishes (all individuals