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来自伊比利亚半岛大西洋-地中海沿岸的两种新寄居蟹（甲壳纲：十足目：陆寄居蟹科）：向极迁移物种还是仅仅被忽视的本土物种？

Two new hermit crab species of (Crustacea: Decapoda: Diogenidae) from Atlanto-Mediterranean coasts of Iberian Peninsula: Poleward migrants or merely overlooked indigenous species?

作者信息

Almón Bruno, Cuesta Jose A, García-Raso J Enrique

机构信息

Centro Oceanográfico de Vigo IEO-CSIC Vigo Spain.

Grupo de Estudo do Medio Mariño (GEMM) A Coruña Spain.

出版信息

Ecol Evol. 2022 May 19;12(5):e8844. doi: 10.1002/ece3.8844. eCollection 2022 May.

DOI:10.1002/ece3.8844
PMID:35600683
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9120568/
Abstract

A new hermit crab species of the genus with reddish-orange cheliped, sp. nov., is described and illustrated based on specimens from the Mediterranean coasts of the Iberian Peninsula, southern Spain. In addition, a second morphotype originating from Mauritanian waters and morphologically very close to sp. nov. is described as a different species, sp. nov. The new species are here compared to morphologically similar congeners, especially to those inhabiting the same geographical range. sp. nov. is distinguishable from other primarily by the shape and armature of the left cheliped, with a palm slightly higher than long, with a ridge of spines running along the proximal lower margin that continues with a series of spinose rows forming a central band parallel to the upper margin of the palm. The palm in sp. nov. is longer than high and shows similar proximal ridge, but without central spinose ridge. The shape of the cheliped is also different in sp. nov., with long dactylus, which is also flattened and twisted. Sequences from two mitochondrial and one nuclear genes, and comparative analyses with other available sequences for the genus, are also included. Molecular phylogenetic analyses support the morphological delimitation, with sp. nov. and sp. nov. forming a separate group, more related to other tropical species, which raises different possible explanations for its presence in the Iberian Peninsula.

摘要

基于来自西班牙南部伊比利亚半岛地中海沿岸的标本，描述并图示了一种具有橙红色螯足的新寄居蟹物种，[具体属名] sp. nov.。此外，描述了另一种源自毛里塔尼亚海域且形态上与[具体属名] sp. nov.非常接近的形态型，将其作为一个不同的物种，[具体属名] sp. nov.。本文将新物种与形态相似的同属物种进行了比较，特别是与那些分布在相同地理区域的物种。[具体属名] sp. nov.与其他[具体属名]物种的主要区别在于左螯足的形状和刚毛，其掌节略高于长，在近端下缘有一排刺脊，该刺脊与一系列形成平行于掌节上缘的中央带的刺状排相连。[具体属名] sp. nov.的掌节长于高，且有类似的近端脊，但没有中央刺状脊。[具体属名] sp. nov.的螯足形状也不同，其指节长，且扁平并扭曲。还包括来自两个线粒体基因和一个核基因的序列，以及与该属其他可用序列的比较分析。分子系统发育分析支持形态学上的界定，[具体属名] sp. nov.和[具体属名] sp. nov.形成一个单独的类群，与其他热带物种的关系更为密切，这为其在伊比利亚半岛的存在提出了不同的可能解释。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/4fa404c028f3/ECE3-12-e8844-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/acdd6a5c6429/ECE3-12-e8844-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/13b275ab53bd/ECE3-12-e8844-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/36d9cbe423d6/ECE3-12-e8844-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/4101627e6816/ECE3-12-e8844-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/dbc35b6c176c/ECE3-12-e8844-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/3de766a9f219/ECE3-12-e8844-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/4fa404c028f3/ECE3-12-e8844-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/acdd6a5c6429/ECE3-12-e8844-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/13b275ab53bd/ECE3-12-e8844-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/36d9cbe423d6/ECE3-12-e8844-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/4101627e6816/ECE3-12-e8844-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/dbc35b6c176c/ECE3-12-e8844-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/3de766a9f219/ECE3-12-e8844-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0adc/9120568/4fa404c028f3/ECE3-12-e8844-g008.jpg

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