Abstract.— Kinorhynchs are microscopic invertebrates that are part of the meiofaunal community. Their diversity and distribution has been relatively unstudied in the Gulf of Mexico until the past few years. Past studies from Troy University have reported 32 species of kinorhynchs in the Gulf, from Texas to Florida. This study reports a re-sampling effort which focused on the Louisiana shelf, in an attempt to further understand the relationships between the shelf sediment and the kinorhynch diversity. For this work, sediment was sampled at 16 locations in 2015 using a multicorer. Kinorhynchs were isolated using centrifugation. Animal densities ranged from <1–33/10 cm2, with an average of 12 animals/10 cm2. A total of 345 animals were identified to the species level. Echinoderes bookhouti was the most abundant animal, which along with E. augustae, E. spinifurca, E. skipperae, and Leiocanthus cf. L. langi accounted for almost all the identifications. Additionally, we report four new species records for the Gulf of Mexico: Pycnophyes alexandroi, P. norenburgi, Antygomonas paulae, and Leiocanthus cf. L. corrugatus. These data reveal a multi-year trend with regard to dominant kinorhynch species within the Gulf of Mexico, and support an earlier study of Gulf kinorhynchs from 2013–2014. Multivariate analysis revealed that sediment locations with higher densities of kinorhynchs associated with higher levels of organic matter, and sediment locations with low densities associated with sandy sediment.

中文翻译：

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路易斯安那大陆架上的 Kinorhynch 社区

摘要：Kinorhynchs 是微型无脊椎动物，是小型动物群落的一部分。直到过去几年，它们的多样性和分布在墨西哥湾还没有得到充分研究。特洛伊大学过去的研究报告了从德克萨斯州到佛罗里达州的墨西哥湾有 32 种金丝雀。本研究报告了一项针对路易斯安那大陆架的重新采样工作，旨在进一步了解大陆架沉积物与基诺林奇多样性之间的关系。在这项工作中，2015 年使用多核仪在 16 个地点对沉积物进行了采样。使用离心分离Kinorhynchs。动物密度范围为 <1–33/10 cm2，平均为 12 只动物/10 cm2。共有 345 只动物被鉴定到物种水平。Echinoderes bookhouti 是数量最多的动物，与 E. augustae 一起，E. spinifurca、E. skipperae 和 Leiocanthus 参见。L. langi 占了几乎所有的鉴定结果。此外，我们报告了墨西哥湾的四个新物种记录：Pycnophyes alexandroi、P. norenburgi、Antygomonas paulae 和 Leiocanthus cf。L. 波纹管。这些数据揭示了墨西哥湾内主要动吻鳄物种的多年趋势，并支持了 2013 年至 2014 年间对墨西哥湾动吻鳄的早期研究。多变量分析表明，与较高水平的有机质相关的基诺林克斯密度较高的沉积物位置，以及与砂质沉积物相关的密度低的沉积物位置。norenburgi、Antygomonas paulae 和 Leiocanthus cf。L. 波纹管。这些数据揭示了墨西哥湾内主要动吻鳄物种的多年趋势，并支持了 2013 年至 2014 年间对墨西哥湾动吻鳄的早期研究。多变量分析表明，与较高水平的有机质相关的基诺林克斯密度较高的沉积物位置，以及与砂质沉积物相关的密度低的沉积物位置。norenburgi、Antygomonas paulae 和 Leiocanthus cf。L. 波纹管。这些数据揭示了墨西哥湾内主要动吻鳄物种的多年趋势，并支持了 2013 年至 2014 年间对墨西哥湾动吻鳄的早期研究。多变量分析表明，与较高水平的有机质相关的基诺林克斯密度较高的沉积物位置，以及与砂质沉积物相关的密度低的沉积物位置。