切拉滩及其周围(西地中海)的软体动物区系

IF 0.8 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY
J. A. Caballero-Herrera, J. Urra, S. Gofas, C. Salas, P. Bárcenas, M. Gallardo-Núñez, E. Moya-Urbano, J. Olivero, J. Rueda
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引用次数: 0

摘要

用van Veen抓取器在95 ~ 729 m的深度范围内采集了21个样本,对切拉滩及其周围的软体动物进行了研究。在最近宣布的群落重要地点“Sur de Almería-Seco de los Olivos”,共鉴定出299个分类群(其中77个是活体捕获的),从而使报告的软体动物种类增加了95%以上。其中两种是西班牙水域的新记录,一种是阿尔博兰海的新记录。物种丰富度高可能与该海域的地理位置、水文特征和地形异质性有关。通过对活采软体动物定量数据的多变量分析,区分出4个显著组:(1)深埋菱形石的深海泥质底;(II)含珊瑚碎石的深海泥质底;(III)深海半深海泥质底;(IV)深海砂质底。软体动物在珊瑚骨架底部比在切拉滩周围的沉积底部更多样化。大多数活捕捞的种类广泛分布在大西洋和地中海沿岸,少数是严格意义上的地中海。最显著的特征是出现了两个具有浮游营养幼虫发育的物种,其中Chella Bank是地中海唯一记录的地方(Episcomitra angelesae和Mitrella templadoi),而其他地方极其罕见(Mathilda spp.)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The molluscan fauna of Chella Bank and surroundings (Western Mediterranean Sea)
Molluscs of Chella Bank and its surroundings were studied from 21 samples collected with a van Veen grab in the depth range 95-729 m. A total of 299 taxa were identified (77 live-taken), thus increasing by more than 95% the species of molluscs reported in the recently declared site of community importance “Sur de Almería-Seco de los Olivos”. Two of the species are new records to Spanish waters and one to the Alboran Sea. The high species richness observed could be related to the location, the hydrological characteristics and the topographical heterogeneity of the area within the Alboran Sea. Four significant groups of samples were discriminated through multivariate analysis of quantitative data of live-taken molluscs: (I) bathyal muddy bottoms with buried rhodoliths; (II) bathyal muddy bottoms with coral rubble; (III) bathyal hemipelagic muddy bottoms and (IV) bathyal sandy bottoms. Molluscs were more diverse on coral framework bottoms than on sedimentary bottoms around Chella Bank. Most of the live-taken species are widely distributed along the Atlantic and Mediterranean Sea, and a few are strictly Mediterranean. The most striking feature was the occurrence of two species with planktotrophic larval development for which Chella Bank is the sole recorded locality in the Mediterranean (Episcomitra angelesae and Mitrella templadoi) and which elsewhere extremely rare (Mathilda spp.).
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来源期刊
Scientia Marina
Scientia Marina 生物-海洋与淡水生物学
CiteScore
2.10
自引率
0.00%
发文量
21
审稿时长
6-12 weeks
期刊介绍: Scientia Marina is the successor to Investigación Pesquera, a journal of marine sciences published since 1955 by the Institut de Ciències del Mar de Barcelona (CSIC). Scientia Marina is included in the Science Citation Index since 1998 and publishes original papers, reviews and comments concerning research in the following fields: Marine Biology and Ecology, Fisheries and Fisheries Ecology, Systematics, Faunistics and Marine Biogeography, Physical Oceanography, Chemical Oceanography, and Marine Geology. Emphasis is placed on articles of an interdisciplinary nature and of general interest.
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