1Postdoctoral Researcher (CONACYT) associated with Programa de Maestría en Biosistemática y Manejo de Recursos Naturales y Agrícolas (BIMARENA)/ Laboratorio de Ecología Molecular, Microbiología y Taxonomía (LEMITAX), Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Camino Ramón Padilla Sánchez No. 2100, 45200, Nextipac, Zapopan, Jalisco, Mexico. .
2Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología. Universidad Nacional Autónoma de México, PO Box 811, 82000, Mazatlán, Sinaloa, Mexico. .
Zootaxa. 2023 Apr 3;5259(1):1-71. doi: 10.11646/zootaxa.5259.1.1.
Deep-sea ophiuroids from western Mexico have been documented since 1899, but mostly by non-Mexican expeditions. TALUD is a Mexican project designed to study the deep-sea fauna from Mexico. As part of it, the present contribution provides for the first time detailed information about the taxonomy and distribution, as well as images, of deep-sea ophiuroids from western Mexico, representing a useful taxonomic identification tool for Ophiuroidea from the eastern Pacific. A total of 38 species of ophiuroid (35 identified at species level, one at genus level, and two as confer) were collected from 83 stations located at 123‒2,309 m depth. At a regional scale, several new species records are presented: six for western Baja California, five for western Baja California Sur, two for the Gulf of California, four for Jalisco, 14 for Colima, and five for Guerrero. Geographic (six) and bathymetric (seven) distribution ranges of species are extended. An updated list of deep-sea ophiuroids (61 species) from western Mexico is provided together with an identification key to species collected during this survey. In addition, nine records of deep-sea ophiuroids for the Mexican Pacific are unproven, doubtful or invalid. We corroborated the presence of Ophiacantha eurypoma and Ophiacantha pacifica in the study area and added Amphiura gymnogastra as the first record for Mexico. We propose to transfer Ophiacantha phragma to Ophiolimna on account of it having both granules and spines on the dorsal disc and striated arm plates. TALUD cruises collected 57 % of the total deep-sea species known to occur off Mexico, making it the most important survey of deep-sea Ophiuroidea carried out in western Mexico to date.
自 1899 年以来，人们就已经记录了来自墨西哥西部的深海蛇尾类动物，但主要是由非墨西哥考察队记录的。TALUD 是一个旨在研究墨西哥深海动物群的墨西哥项目。作为其一部分，本贡献首次提供了有关来自墨西哥西部深海蛇尾类动物的分类学和分布的详细信息，以及图像，代表了东太平洋蛇尾类动物有用的分类鉴定工具。从位于 123-2309 米深度的 83 个站位共采集了 38 种蛇尾类动物（35 种在种水平上确定，1 种在属水平上确定，2 种作为假定种）。在区域尺度上，提出了几个新的物种记录：加利福尼亚湾有 6 种来自下加利福尼亚半岛西部，5 种来自下加利福尼亚半岛南部，2 种来自加利福尼亚湾，4 种来自哈利斯科州，14 种来自科利马州，5 种来自格雷罗州。扩展了物种的地理（6 个）和水深（7 个）分布范围。提供了一份来自墨西哥西部的深海蛇尾类动物（61 种）的最新清单，并附有在本次调查中收集的物种的鉴定钥匙。此外，墨西哥太平洋的深海蛇尾类动物有 9 个记录未经证实、可疑或无效。我们证实了研究区域内存在 Ophiacantha eurypoma 和 Ophiacantha pacifica，并增加了 Amphiura gymnogastra 作为墨西哥的第一个记录。我们提议将 Ophiacantha phragma 转移到 Ophiolimna，因为它的背盘既有颗粒又有刺，臂板有条纹。TALUD 考察共采集了墨西哥已知深海物种的 57%，这是迄今为止在墨西哥西部进行的最重要的深海蛇尾类动物考察。
