海南省三亚市红树林湿地海洋线虫群落特征及其影响因子  

Characteristics and their influencing factors of marine nematode communities in mangrove wetlands of Sanya City,Hainan Province

作　　者：杨幼晨 张德梅 慕芳红[1] 华尔[1] Yang Youchen;Zhang Demei;Mu Fanghong;Hua Er(College of Marine Life Sciences,Ocean University of China,Qingdao 266003,China;Organization Department of the Communist Party of China Yantai Municipal Committee,Yantai 264003,China)

机构地区：[1]中国海洋大学海洋生命学院,山东青岛266003 [2]中共烟台市委组织部,山东烟台264003

出　　处：《海洋学报》2024年第11期91-105,共15页

基　　金：国家自然科学基金(41976100)。

摘　　要：本研究于2020年11月在海南亚龙湾青梅港红树林自然保护区和三亚河红树林自然保护区采集沉积物样品,开展了海洋线虫的群落特征及影响因子研究。研究结果显示,青梅港红树林海洋线虫平均丰度为(80.4±40.3) ind./cm^(2),三亚河红树林的为(96.7±55.6) ind./cm^(2),两处红树林湿地海洋线虫平均丰度为(88.5±47.1) ind./cm^(2),海洋线虫丰度在两红树林湿地间存在显著差异。共鉴定海洋线虫77种,隶属于56属,21科7目。青梅港红树林的优势属为新色矛线虫属(Neochromadora)、微口线虫属(Terschellingia)、拟单宫线虫属(Paramonohystera)、吞咽线虫属(Daptonema)、链环线虫属(Desmodora),以刮食性线虫为优势摄食类型;三亚河红树林的优势属为微口线虫属(Terschellingia)、萨巴线虫属(Sabatieria)、游咽线虫属(Eleutherolaimus)、拟齿线虫属(Parodontophora)和折咽线虫属(Ptycholaimellus),以选择性沉积食性线虫为主;两红树林湿地共同的优势属为微口线虫属。海洋线虫群落结构在两红树林均具空间差异,海洋线虫群落在两红树林之间分化,但差异并不显著。沉积物有机质含量和脱镁叶绿酸含量是影响三亚河红树林海洋线虫丰度和群落结构的重要因素;红树植被类型的差异可能在一定程度上对青梅港红树林海洋线虫的丰度及群落结构产生影响;沉积物粒度特征、海水pH值和盐度等的差异可解释两处红树林选定站点海洋线虫群落的分化。此外,青梅港红树林存在污水工程、港口建设和旅游业的发展,三亚河红树林存在人为砍伐、筑堤、盐田开辟、养虾池废水排放,两地存在的不同污染也可能是导致红树林海洋线虫群落分化的原因。In November 2020,sediment samples were collected from the Yalong Bay Qingmei Port mangrove nature reserve and the Sanya River mangrove nature reserve in Hainan Province.The present study focused on the community characteristics of marine nematodes and their influencing factors in these two mangroves.The results of the present study showed that the average abundance of marine nematodes was(80.4±40.3)ind./cm^(2) in the Qingmei Port mangrove,while it was(96.7±55.6)ind./cm^(2) in the Sanya River mangrove.In this study,the average abundance of marine nematodes in the two study mangrove wetlands was(88.5±47.1)ind./cm^(2).There were significant differences in the abundance of marine nematodes between the two mangrove wetlands.A total of 77 species of marine nematodes were identified,belonging to 56 genera,21 families and 7 orders.The dominant genera in the Qingmei Port mangrove were Neochromadora,Terschellingia,Paramonohystera,Daptonema and Desmodora,and epigrowth feeders were the dominant feeding type.The dominant genera in the Sanya River mangrove were Terschellingia,Sabatieria,Eleutherolaimus,Parodontophora and Ptycholaimellus,and the selective deposit feeders dominated.Terschellingia dominated in both mangroves.There were spatial differences in the community structure of marine nematodes in study mangroves.Although the marine nematode communities differentiated between the two mangroves,the difference was not significant.Organic matter content and phaeophorbide content in sediments were important factors affecting the abundance and community structure of marine nematodes in Sanya River mangrove.The differences in mangrove vegetation types may affect the abundance and community structure of marine nematodes in Qingmei Port mangrove to some extent.The differences of sediment granularity characteristics,seawater pH and salinity could explain the differentiation of marine nematode communities at selected sites of the two mangrove.In addition,there are sewage project,port construction and tourism development in Qingme

关 键 词：红树林 海洋线虫 种类组成 摄食结构 三亚 

分 类 号：Q178.53[生物学—水生生物学]