建溪建瓯丰乐至水西桥段淡水贝类调查  被引量:1

The survey of freshwater mollusks in Jianxi River from Fengle in Xundun to Shuixiqiao in Jian'ou

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作  者:邹丽珍[1] 崔利峰[1] 蒋奕雄[1] 高山[1] 何美峰[1] ZOU Lizhen;CUI Lifeng;JIANG Yixiong;GAO Shan;HE Meifeng(Freshwater Fisheries Research Institute of Fujian Province,Fuzhou 350002,China)

机构地区:[1]福建省淡水水产研究所,福建福州350002

出  处:《渔业研究》2021年第2期143-152,共10页Journal of Fisheries Research

基  金:福建省科技计划项目—省属公益类科研院所基本科研专项(2018R1002-2).

摘  要:2018年1月至12月对建溪建瓯丰乐段至水西桥段淡水贝类开展调查。结果显示,调查共获得淡水贝类24种,隶属于8科13属,优势种为铜锈环棱螺(Bellamya aeruginosa Reeve)、梨形环棱螺(Bellamya purificata Heude)、耳河螺(Rivularia auriculata Martens)、河蚬(Corbicula fluminea Müller)和方格短沟蜷(Semisulcospira cancellata Benson),5种优势种壳长与湿重幂指数方程表明这些优势种类均为负异速生长;淡水贝类平均密度和生物量分别为(4.59±4.47)ind/m2和(5.219±3.623)g/m2,密度和生物量在空间分布上整体与坝头距离呈正相关。单因素方差分析表明,密度和生物量在各站位间差异显著(P<0.05),密度在季节分布上差异不显著(P>0.05),生物量在季节分布上差异显著(P<0.05);群落多样性较低,Margalef指数、Shannon-Wiener指数和Pielou指数随着季节的变化差异不显著(P>0.05);在上溪口站位发现外来物种福寿螺(Pomacea canaliculata)。与其他江河流域如赣江、钱塘江干流、淮河干流等相比,调查区域淡水贝类物种数、密度、生物量及多样性低,建议有关部门加强淡水贝类资源及栖息地保护,同时加强外来物种福寿螺的动态监测及防控。Freshwater mollusks in Jianxi River from Fengle in Xundun to Shuixiqiao in Jian'ou were surveyed from January to December in 2018.The results showed that 24 species were identified and they belonged to 8 families and 13 genera.The dominant species were Bellamya aeruginosa Reeve,Bellamya purificata Heude,Rivularia auriculata Martens,Corbicula fluminea Müller and Semisulcospira cancellata Benson.The shell length and the wet weight relationship equations showed these five dominant species were all negative allometric growth.The average density and biomass were(4.59±4.47)ind/m2 and(5.219±3.623)g/m2 and the spatial distribution of density and biomass were positively correlated with the distance to dam.One-way analysis of variance(ANOVA)showed that the density and biomass among different sites were significantly different(P<0.05)and the seasonal distribution of density showed no significant difference(P>0.05)but significantly different in biomass(P<0.05).The community diversities were low.Margalef index,Shannon-Wiener index and Pielou index showed no significant difference among seasons(P>0.05).The invasive species such as Pomacea canaliculata were found in the site of Shangxikou.Compared with other rivers such as Ganjiang River,Qiantang River and Huaihe River,the number of species,density,biomass and the diversity were low.So it is suggested that relevant departments should strengthen the protection of freshwater mollusks resources and habitats,as well as the dynamic monitoring and control of invasive species.

关 键 词:淡水贝类 建溪 密度 生物量 多样性 

分 类 号:S932.6[农业科学—渔业资源]

 

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