First columbellid species (Gastropoda: Buccinoidea) from deep-sea hydrothermal vents, discovered in Okinawa Trough, Japan

First columbellid species (Gastropoda: Buccinoidea) from deep-sea hydrothermal vents, discovered in Okinawa Trough, Japan
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在日本冲绳海槽发现的第一个来自深海热液喷口的弓形动物物种(腹足纲:Buccinoidea)

DOI:
10.11646/zootaxa.4363.4.13
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发表时间:
2017
期刊:
影响因子:
0.9
通讯作者:
ARAYA JUAN FRANCISCO
ARAYA JUAN FRANCISCO
中科院分区:
生物学4区
文献类型:
--
作者:
CHEN CHONG;WATANABE HIROMI KAYAMA;ARAYA JUAN FRANCISCO

文献摘要

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日本深海化能合成生态系统的软体动物多样性总体上有很好的记录,约有80个描述物种,其中一半以上是腹足类(Sasaki等人,2005年; Fujikura等人,2012年; Sasaki等人,2016年)。然而,最近利用多波束回声测深法在该地区发现了一些新的热液喷口地点(中村等人,2015年),为新的发现提供了机会。作为正在进行的记录这些地点生物多样性的研究的一部分,我们提出了来自热液喷口的鸽科的第一个记录,其中一个新物种是从夏津和阿基地点发现的,在Iheya北热液区(关于喷口区的地图和背景,见中村等人,2015年)鸽螺科(Columbellidae)是新腹足类中的一个分支,隶属于鸽螺总科(Buccinoidea),共有70属数百种(deMaintenon 2014; Araya等人2016),其中大多数栖息在浅水沃茨,并带有独特的颜色图案。一般来说,柱螺的尺寸很小(大多数小于20毫米,尽管一些大型标本超过40毫米),并且是活跃的食肉动物或食腐动物(Squires 2015)。仅日本就已知有超过65个物种(Okutani 2017),尽管该科的深水多样性仍然知之甚少,还有一些未命名的物种(Hasegawa 2009)。目前的新物种不仅是在冲绳海槽热液喷口生态系统中记录到的第一个Columbellid,也是在整个全球喷口群落中记录到的第一个Columbellid。在本研究之前,唯一报道的来自化能合成生态系统的哥伦比亚虫来自鲸鱼瀑布(Smith等人,1989年; Levin等人,2002年)。
The molluscan diversity of deep-sea chemosynthetic ecosystems in Japan has been in general well documented with about 80 described species, of which over half are gastropods (Sasaki et al. 2005; Fujikura et al. 2012; Sasaki et al. 2016). Recently, however, a number of novel hydrothermal vent sites were discovered in the area using multibeam echosounding (Nakamura et al. 2015), providing opportunities for new discoveries. As a part of ongoing studies documenting the biodiversity of such sites, we present the first record of Columbellidae from hydrothermal vents, with a new species recovered from Natsu and Aki sites, in the Iheya North hydrothermal field (for map and background on the vent field see Nakamura et al. 2015).Columbellidae is a diverse family of caenogastropods in the superfamily Buccinoidea which include 70 genera and several hundred species (deMaintenon 2014; Araya et al. 2016), most of which inhabit shallow waters and carry distinct colour patterns. Generally, columbellids are small in size (mostly less than 20 mm although some large specimens exceed 40 mm) and are either active carnivores or scavengers (Squires 2015). More than 65 species are known from Japan alone (Okutani 2017), although the deep-water diversity of the family remains poorly understood with a number of unnamed species (Hasegawa 2009). The present new species is the first columbellid recorded not only from hydrothermal vent ecosystems in Okinawa Trough, but from global vent communities as a whole. Prior to the present study, the only columbellids reported from chemosynthetic ecosystems have been from whale-falls (Smith et al. 1989; Levin et al. 2002).