A Large Aggregation of Liparids at 7703 Meters and a Reappraisal of the Abundance and Diversity of Hadal Fish
A Large Aggregation of Liparids at 7703 Meters and a Reappraisal of the Abundance and Diversity of Hadal Fish
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DOI：
10.1525/bio.2010.60.7.6
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发表时间：
2010-07-01
期刊：
影响因子：
10.1
通讯作者：
Priede, Imants G.
中科院分区：
文献类型：
--
作者：
Fujii, Toyonobu;Jamieson, Alan J.;Priede, Imants G.
很少有生物学研究调查了海沟内的深渊深度，从6000米（m）骤降到近11，000英寸的全海洋深度。在这里，我们提出了最深的鱼的原位观察：一个超深的蜗牛鱼，Pseudoliparis amblystomopsis（Andriashev 1955），从7703米深的日本海沟，这是使用诱饵视频着陆器。我们观察到的鱼的最大数量出乎意料地高于拖网捕捞记录的任何已知的深海鱼类。我们描述了鱼类丰度和相关行为随时间的变化，包括进食，休息和游泳。根据这些新的观察，我们重新评估的发生和多样性的记录，已建成从零碎的，往往是误导性的信息，来自历史的探索和全球数据集的深渊鱼类。这一重新评估表明，深海鱼类的多样性可能较低，虽然一些深海鱼类物种可能达到更大的人口比以前认为的。
Few biological studies have investigated the hadal depths within oceanic trenches that plummet from 6000 meters (m) to the full ocean depth of almost 11,000 in. Here we present the deepest known in situ observations of fish: a hadal snailfish, Pseudoliparis amblystomopsis (Andriashev 1955), from 7703-m deep in the Japan Trench, which was obtained using a baited video lander. The maximum number of fish we observed was unexpectedly higher than trawl catch records of any known hadal fish. We describe changes in fish abundance and associated behaviors over time, including feeding, resting, and swimming. In light of these new observations, we reappraise the occurrence and diversity records of hadal fishes that have been constructed from fragmentary and often misleading information derived from historical explorations and global data sets. This reappraisal suggests that hadal fish diversity may be lower-although some hadal fish species may attain much larger populations-than previously thought.