厦门钟宅泥滩海洋线虫群落的种类组成及其多样性

１９９９年２月和１９９９年５月在厦门钟宅泥滩３个取样站取样，获得自由生活海洋线虫４８种，隶属于３目１９科４１属。这些海洋线虫在厦门潮间带均是首次记录。主要优势种有变异毛咽线虫（Ｄｏｒｙｌａｉｍｏｐｓｉｓ ｕａｒｉａｂｉｌｉｓ）、Ｖｉｓｃｏｓｉａ ｓｐ．、吞咽线虫（Ｄａｐｔｏｎｅｍａ ｓｐｌ．）、囊咽线虫（Ｓｐｈａｅｒｏｌａｉｍｕｓｂａｌｔｉｃｕｓ）和Ｔｈａｌａｓｓｏｍｏｎｈｙｓｔｅｒａ ｓｐ．等五

Species Composition and Diversity of Marine Nematode Community on Intertidal Mudflat in Zhongzhai, Xiamen

Three sampling stations on mudflat in Zhongzhai Xiamen were designed to investigate free living marine nematode. 48 species of marine nematodes were collected during February and May sampling. They belong to 41 Genera, 19 Families and 3 Orders. All of them were first recorded on Xiamen intertidal zone. The dominant species were Dorylaimopsis variabilis , Viscosia sp., Daptonema sp1., Sphaerolaimus balticus and Thalassomonhystera sp. The densities of marine nematodes increased from higher mudflat to lower mudflat. There was obvious difference in species composition of marine nematodes between February and May according to cluster analysis and Multi Dimensional Scaling analysis. The species number and species diversity index of marine nematodes on intertidal mudflat in Xiamen Zhongzhai were respectively fewer and lower than those in Taiwan Strait, but the density on intertidal mudflat in Xiamen Zhongzhai was higher than those in Taiwan Strait. Which related to different effects of food and ecological factors between Xiamen Zhongzhai mudflat and Taiwan Strait.