来自西南大西洋的新的深层唇口目苔藓虫物种：为黑暗带来光明。

New deep Cheilostomata (Bryozoa) species from the Southwestern Atlantic: shedding light in the dark.

作者信息

Figuerola Blanca, Gordon Dennis P, Cristobo Javier

机构信息

Department of Evolutionary Biology, Ecology, and Environmental Sciences and Biodiversity Research Institute (IrBIO), University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain. Smithsonian Tropical Research Institute, Panama, Republic of Panama.

出版信息

Zootaxa. 2018 Jan 24;4375(2):211-249. doi: 10.11646/zootaxa.4375.2.3.

DOI:10.11646/zootaxa.4375.2.3

PMID:29689770

Abstract

The present paper reports on 22 bryozoan species collected from 25 localities on the Southwestern Atlantic continental shelf and slope by the Instituto Español de Oceanografía vessel RV Miguel Oliver (2008-2010). Two new genera, Amynaskolia n. gen. and Biconcavus n. gen., and twenty new cheilostome species are described: Amastigia zigzag n. sp., Membranicellaria balanyai n. sp., Figularia dimorpha n. sp., Biconcavus batmani n. sp., Smittina acicularis n. sp., Smittoidea granulosa n. sp., Amynaskolia foramina n. sp., Mawatarius avilae n. sp., Mucropetraliella reticulata n. sp., Ipsibuffonella umbonata n. sp., Microporella gappai n. sp., Fenestrulina curviscutum n. sp., Fenestrulina multiflorum n. sp., Malakosaria cecilioi n. sp., Osthimosia incisa n. sp., Spigaleos simplex n. sp., Reteporella kuklinskii n. sp., Reteporella maryae n. sp., Reteporella taylori n. sp., Orthoporidra nova n. sp.. New taxonomic remarks are also included for two little-known species: Melicerita atlantica Busk, 1884 and Arachnopusia tubula Hayward Thorpe, 1988. Membranicellaria balanyai n. sp., Mawatarius avilae n. sp. and Ipsibuffonella umbonata n. sp. represent the third described species of their genera, whereas Spigaleos simplex n. sp., Malakosaria cecilioi n. sp. and Orthoporidra nova n. sp. are the fourth, fifth and sixth described species of their genera respectively. Spigaleos (Celleporidae) and Arachnopusia tubula (Arachnopusiidae), previously reported only from Antarctica, Ipsibuffonella (Buffonellodidae), reported from tropical and subtropical regions, and Mucropetraliella (Petraliidae) all represent first records for the Patagonian region, expanding their geographic distributions northwards and southwards, respectively. These results highlight the importance of sampling the slope and deep waters of South American and Antarctic margins and basins, filling significant gaps in the knowledge of the biodiversity and biogeographic ranges of certain taxa in these unique and varied ecosystems.

摘要

本文报道了西班牙海洋研究所的“米格尔·奥利弗号”科考船（2008 - 2010年）在西南大西洋大陆架和陆坡的25个地点采集到的22种苔藓虫。描述了两个新属，即Amynaskolia新属和Biconcavus新属，以及20个新的唇口目物种：Amastigia zigzag新种、Membranicellaria balanyai新种、Figularia dimorpha新种、Biconcavus batmani新种、Smittina acicularis新种、Smittoidea granulosa新种、Amynaskolia foramina新种、Mawatarius avilae新种、Mucropetraliella reticulata新种、Ipsibuffonella umbonata新种、Microporella gappai新种、Fenestrulina curviscutum新种、Fenestrulina multiflorum新种、Malakosaria cecilioi新种、Osthimosia incisa新种、Spigaleos simplex新种、Reteporella kuklinskii新种、Reteporella maryae新种、Reteporella taylori新种、Orthoporidra nova新种。还对两个鲜为人知的物种给出了新的分类学说明：1884年的Melicerita atlantica Busk和1988年的Arachnopusia tubula Hayward Thorpe。Membranicellaria balanyai新种、Mawatarius avilae新种和Ipsibuffonella umbonata新种分别是其所属属的第三个被描述的物种，而Spigaleos simplex新种、Malakosaria cecilioi新种和Orthoporidra nova新种分别是其所属属的第四个、第五个和第六个被描述的物种。Spigaleos（艾氏苔藓虫科）和Arachnopusia tubula（蛛苔藓虫科）此前仅在南极洲有记录，Ipsibuffonella（布氏苔藓虫科）在热带和亚热带地区有记录，Mucropetraliella（苔藓虫科）均为巴塔哥尼亚地区的首次记录，它们分别向北和向南扩展了地理分布范围。这些结果凸显了对南美和南极边缘及盆地的陆坡和深水区域进行采样的重要性，填补了这些独特且多样的生态系统中某些分类群的生物多样性和生物地理范围知识的重大空白。