Protection, Valorization of Coastal Marine Resources and Molecular Systematics Laboratory. Department of Marine Science and Aquaculture. Faculty of Natural Sciences and Life. Abdelhamid Ibn Badis University-Mostaganem, PO Box 227, Route nationale N° 11, Kharrouba, 27000, Mostaganem, Algeria..
School of Life Sciences, University of KwaZulu-Natal, P/Bag X54001, Durban 4000, South Africa..
Zootaxa. 2021 Jun 3;4981(1):89106. doi: 10.11646/zootaxa.4981.1.4.
In this study we redescribe the taxonomy of some holothuriid species collected from different localities of the Algerian coastal waters. Morphological (anatomical and endoskeletal) and previous molecular studies show the presence of two distinct morphotypes of Holothuria (Holothuria) tubulosa "A" "B". Morphotype "A" corresponds to the classical Holothuria (Holothuria) tubulosa Gmelin 1791, described by Koehler (1921) and hereafter referred to as H. (H.) tubulosa (s.s.), while morphotype "B", we believe, represents a new species, herein named H. (Holothuria) algeriensis n. sp. with characteristics significantly different from those of Holothuria (H.) tubulosa (s.s.). Both morphology and statistical analysis (Linear Discriminant Analysis) confirm significant differences between these two morphotypes. To visualize these differences, measurements made on ossicles of Holothuria (H.) tubulosa (s.s.) and Holothuria (H.) algeriensis n. sp. were compared with other species present in our collections, including the north-eastern Atlantic and Mediterranean Holothuria (Roweothuria) arguinensis Koehler Vaney, 1906, recently recorded from Algerian waters, the Mediterranean Holothuria (Roweothuria) poli Delle Chiaje, 1824 and Holothuria (Holothuria) stellati Delle Chiaje, 1824. We conclude that the two morphotypes of H. (H.) tubulosa are significantly different to warrant the recognition of a new species, H. (H.) algeriensis n. sp. and the linear discriminant analysis (LDA) of the five species demonstrate this.
在这项研究中，我们重新描述了从阿尔及利亚沿海水域不同地点采集的一些海参物种的分类。形态学（解剖学和内骨骼）和以前的分子研究表明，存在两种不同形态的 Holothuria (Holothuria) tubulosa "A" "B"。形态型"A"对应于经典的 Holothuria (Holothuria) tubulosa Gmelin 1791，由 Koehler（1921 年）描述，此后称为 H. (H.) tubulosa（s.s.），而形态型"B"，我们认为，代表一个新物种，本文命名为 H. (Holothuria) algeriensis n. sp.，其特征与 Holothuria (H.) tubulosa（s.s.）明显不同。形态和统计分析（线性判别分析）都证实了这两种形态型之间存在显著差异。为了可视化这些差异，对 Holothuria (H.) tubulosa（s.s.）和 Holothuria (H.) algeriensis n. sp.的骨片进行了测量，并与我们收集的其他物种进行了比较，包括东北大西洋和地中海的 Holothuria (Roweothuria) arguinensis Koehler Vaney，1906 年，最近在阿尔及利亚水域被记录到，地中海的 Holothuria (Roweothuria) poli Delle Chiaje，1824 年和 Holothuria (Holothuria) stellati Delle Chiaje，1824 年。我们得出结论，H. (H.) tubulosa 的两种形态型存在显著差异，足以证明需要识别一个新物种，H. (H.) algeriensis n. sp.，并且五种物种的线性判别分析（LDA）证明了这一点。
