A review of occurrence, distribution and alien status of Notodiaphana atlantica and Liloa mongii () (Mollusca: Heterobranchia) in the Mediterranean Sea

Pub Date : 2021-09-01 DOI:10.2478/oandhs-2021-0022
L. Romani, L. Tringali, F. Crocetta
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Abstract

Abstract Notodiaphana atlantica and Liloa mongii are two cephalaspidean species described respectively from the Atlantic Ocean and the Red Sea, and considered widespread in their native ranges. Both species have also been recently recorded from the Mediterranean Sea, prompting some authors to consider them alien. Notwithstanding clear morphological differences in their shells, the two species have often been confused or misidentified in the literature, or specimens have been described with incorrect locality data. We hereby review the occurrence, distribution and status of both species in the Mediterranean Sea based on published data and examination of new material. Notodiaphana atlantica is considered a cryptogenic species with a range spanning from the western to eastern part of the basin. The presence of L. mongii in the Mediterranean is questioned until specimens that can be reliably assigned to this taxon or to any congeneric species are found in the area. Alien species inventories play an important role in regional policy and management decisions, thus requiring a high degree of confidence in the validity of species identification and their non-indigenous status. The present paper adds further evidence of the excess of “bibliographically introduced” alien records and reiterates the need for periodic re-evaluation of published data.
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地中海Notodiaphana atlantica和Liloa mongii()(软体动物:异鳃目)的发生、分布和外来地位综述
摘要Notodiphana atlantica和Liloa mongii是分别来自大西洋和红海的两种头足目物种,被认为在其原生范围内广泛分布。最近在地中海也记录到了这两个物种,这促使一些作者认为它们是外来物种。尽管它们的外壳存在明显的形态差异,但这两个物种在文献中经常被混淆或误认,或者用不正确的位置数据描述了标本。根据已发表的数据和对新材料的审查,我们特此审查这两个物种在地中海的发生、分布和地位。atlantica Notodiphana被认为是一个隐成因物种,其范围从盆地的西部到东部。蒙氏乳杆菌在地中海的存在一直受到质疑,直到在该地区发现了可以可靠地归属于该分类单元或任何同类物种的标本。外来物种清单在区域政策和管理决策中发挥着重要作用,因此需要对物种识别的有效性及其非本土地位有高度的信心。本文件进一步证明了“文献介绍”的外国记录过多,并重申有必要定期重新评估已公布的数据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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