Lörz Anne-Nina, Jażdżewska Anna Maria, Brandt Angelika
Centre of Natural History, Zoological Museum, University of Hamburg CeNak, Hamburg, Germany.
Laboratory of Polar Biology and Oceanobiology, Department of Invertebrate Zoology and Hydrobiology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
PeerJ. 2018 Jun 7;6:e4887. doi: 10.7717/peerj.4887. eCollection 2018.
The bathyal to hadal deep sea of north-west Pacific Ocean was recently intensively sampled during four international expeditions (KuramBio I and II, SoJaBio and SokhoBio). A large amphipod, n. sp., was sampled in the Kuril-Kamchatka Trench and increases the number of described hadal species of that area to eight. A detailed description of the new species is provided, including illustrations, scanning-microscope images and molecular analysis. This predatory species was sampled at both continental and ocean abyssal margins of the Kuril-Kamchatka Trench as well as at hadal depths of the trench. The wide bathymetric distribution of the new species over more than 3,000 m is confirmed by molecular analysis, indicating that the Kuril Kamchatka Trench is not a distribution barrier for this species. However, the molecular analysis indicated the presence of isolation by distance of the populations of the studied taxon.
最近，在四次国际考察（KuramBio I和II、SoJaBio和SokhoBio）期间，对西北太平洋的半深海到超深渊深海区域进行了密集采样。在千岛-堪察加海沟采集到一种大型端足目新物种，使该区域已描述的超深渊物种数量增加到8种。本文提供了该新物种的详细描述，包括插图、扫描显微镜图像和分子分析。这种掠食性物种在千岛-堪察加海沟的大陆和海洋深渊边缘以及海沟的超深渊深度均有采集。分子分析证实了该新物种在超过3000米的广阔深度范围内的分布，表明千岛-堪察加海沟并非该物种的分布障碍。然而，分子分析表明所研究分类群的种群存在距离隔离现象。
