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首页> 外文期刊>Biology Bulletin Reviews >Giant Protists (xenophyophores and komokiaceans) from the Clarion—Clipperton Ferromanganese Nodule Field (Eastern Pacific)
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Giant Protists (xenophyophores and komokiaceans) from the Clarion—Clipperton Ferromanganese Nodule Field (Eastern Pacific)

机译：克拉里昂-克利珀顿铁锰结核田（东部太平洋）的巨型原生生物（异生植物和komokiaceans）

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Our investigations are consistent with those of earlier authors in showing that giant testate protists (xenophyophores and komokiaceans) are key groups among the deep-sea mega- and macro-benthos, dominating in density and biomass in some areas of theWorld Ocean. Analyses of 38 600 seafloor photographs, and fauna from 30 box-corers, taken in the Russian exploratory area at the Clarion—Clipperton Fracture Zone ferromanganese nodule field, revealed a diverse and abundant fauna of these organisms. We recognized 6 species of xenophyophores, 4 of them new, and 25 species of komokiaceans, most of which are undescribed. Xenophyophores, which are of megafaunal size, were present in 70% of seafloor photographs. Their abundance averaged 1600 specimens per hectare, with a maximal density of 12 specimens per m (=120000 specimens per hectare), whereas the abundance of the next most common group, the Actiniaria, did not exceed 170 specimens per hectare. Xenophyophores were found in 30% of box-cores. The Komokiacea, which are of macrofaunal size, occurred in 100% of box cores. Earlier studies by other authors have revealed that the abundance and species diversity of macro- and meiobenthos increased when xenophyophores were present, while the smaller komokiaceantests yield many DNA sequences originating from a diversity of other organisms. In the Russian exploratory area, these giant protists therefore probably play an important role in structuring benthic communities. Their study is especially important in the light of mining planned in the deep sea and for understanding of recovery of benthic communities after mining.
机译：我们的研究与早期作者的研究一致，它们表明，巨大的睾丸原生生物（异生植物和komokiaceans）是深海巨型和大型底栖动物中的关键群体，在世界海洋某些地区的密度和生物量中占主导地位。在俄罗斯探索区克拉里昂-克利珀顿断裂带铁锰结核田中拍摄的38 600张海底照片和来自30个箱形芯的动物分析显示，这些生物种类丰富多样。我们认识到6种异生植物，其中4种是新的，以及25种Komokiaceans，其中大多数尚未描述。 70％的海底照片中都存在大型的异生植物。它们的平均丰度为每公顷1600个标本，最大密度为每米12个标本（=每公顷120000个标本），而第二个最常见的猕猴桃属的丰度则不超过每公顷170个标本。在30％的盒芯中发现了异生植物。 Komokiacea具有大型动物的大小，出现在100％的盒子核心​​中。其他作者较早的研究表明，存在异生植物时，大型和中型底栖动物的丰度和物种多样性会增加，而较小的komokiaceantests会产生许多源自其他生物多样性的DNA序列。因此，在俄罗斯探索区，这些巨大的生物可能在构造底栖生物群落中发挥重要作用。鉴于计划在深海进行的采矿以及对采矿后底栖生物群落的恢复的了解，他们的研究特别重要。

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