通过对南海F冷泉海洋线虫的生物特征分析研究冷泉的环境异质性

Environmental heterogeneity of cold seep by biological trait analysis of marine nematodes at Site F cold seep in South China Sea.

作者信息

Hu Bingzhou, Wang Qi, Liu Jiwen, Xing Lei, Zhang Xin, Wang Yuqing, Liu Xiaoshou

机构信息

College of Marine Life Sciences and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266003, China; MOE Key Laboratory of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China.

Key Lab of Submarine Geoscience and Prospecting, College of Marine Geosciences, Ocean University of China, China.

出版信息

Mar Pollut Bull. 2024 Jan;198:115932. doi: 10.1016/j.marpolbul.2023.115932. Epub 2023 Dec 16.

DOI:10.1016/j.marpolbul.2023.115932

PMID:38104383

Abstract

Cold seeps provide high environmental heterogeneity for marine benthos. Site F is one of the active cold seeps in the South China Sea. In this study, free-living marine nematode communities were investigated at Site F and the adjacent deep-sea area. A total of 67 genera and 32 families were identified. The mean density at cold seep sites ranged from 13.6 to 181.8 ind./10 cm, and that at the adjacent deep-sea sites ranged from 36.9 to 301.4 ind./10 cm. At cold seep sites, the most dominant nematode genera were Desmoscolex, Pierrickia, Sabatieria, Halalaimus, and Dorylaimopsis while at deep-sea sites, the most dominant genera were Retrotheristus, Thalassomonhystera, Desmoscolex, Cobbia, and Halalaimus. Deposit feeders of nematodes were dominant at all sites. Results of biological trait analysis showed that there was high environmental heterogeneity for nematodes at Site F. Water depth, sediment organic matter content, and sand proportion had important influences on nematode communities.

摘要

冷泉为海洋底栖生物提供了高度的环境异质性。F 站点是南海活跃的冷泉之一。在本研究中，对 F 站点及相邻深海区域的自由生活海洋线虫群落进行了调查。共鉴定出 67 个属和 32 个科。冷泉站点的平均密度范围为 13.6 至 181.8 个/10 平方厘米，相邻深海站点的平均密度范围为 36.9 至 301.4 个/10 平方厘米。在冷泉站点，最主要的线虫属是 Desmoscolex、Pierrickia、Sabatieria、Halalaimus 和 Dorylaimopsis，而在深海站点，最主要的属是 Retrotheristus、Thalassomonhystera、Desmoscolex、Cobbia 和 Halalaimus。线虫中的沉积食性者在所有站点都占主导地位。生物特征分析结果表明，F 站点的线虫存在高度的环境异质性。水深、沉积物有机质含量和砂比例对线虫群落有重要影响。