铜锈环棱螺和椭圆萝卜螺对丝状绿藻和沉水植物的牧食选择研究  

Grazing selection of Bellamya aeruginosa and Radix swinhoei on filamentous green algae and submerged macrophyte

作　　者：康玉辉 胡胜男 高健[3] 周驰 苗滕 冯智 KANG Yuhui;HU Shengnan;GAO Jian;ZHOU Chi;MIAO Teng;FENG Zhi(Hubei Water Resources Research Institute,Hubei Science and Technology Promotion Centre of Water Resources,Wuhan 430070,China;Hubei Polytechnic Institute,Xiaogan 432000,China;Key Laboratory of Ecological Remediation of Lakes and Rivers and Algal Utilization of Hubei Province,School of Civil and Environment,Hubei University of Technology,Wuhan 430068,China;Wuhan Hangfa Ruihua Ecological Technology Co.,Ltd,Wuhan 430000,China)

机构地区：[1]湖北省水利水电科学研究院,湖北省水利水电科技推广中心,武汉430070 [2]湖北职业技术学院,孝感432000 [3]湖北工业大学,河湖生态修复与藻类利用湖北省重点实验室,生态环境岩土与河湖生态修复学科引智创新示范基地,土木建筑与环境学院,武汉430068 [4]武汉航发瑞华生态科技有限公司,武汉430000

出　　处：《生态科学》2025年第1期10-18,共9页Ecological Science

基　　金：湖北省水科院水利前期科研及咨询工作(P21800600002);国家自然科学基金面上项目(32170383);武汉市建设集团有限责任公司2020年科研计划项目(wszky202014)。

摘　　要：沉水植物重建初期水绵等丝状绿藻易大量孽生,影响沉水植物的恢复效果甚至导致其再次消亡。淡水螺类一般既能牧食藻类又能牧食沉水植物,而其是否优先牧食丝状绿藻进而有利于沉水植物的恢复尚存在争议。基于此选择前鳃亚纲铜锈环棱螺(Bellamyaaeruginosa)和肺螺亚纲椭圆萝卜螺(Radixswinhoei),比较研究二者对浅水湖泊常见的沉水植物穗花狐尾藻(Myriophyllum spicatum)、密刺苦草(Vallisneria denseserrulata)、轮叶黑藻(Hydrilla verticillata)以及丝状绿藻水绵(Spirogyrasp.)和刚毛藻(Chladophorasp.)的牧食选择。结果表明,铜锈环棱螺和椭圆萝卜螺对两种丝状绿藻均具有主动牧食选择性,对三种沉水植物有牧食回避性,丝状绿藻的鲜重减少量也均显著高于其他沉水植物。研究结果表明相对沉水植物,铜锈环棱螺和椭圆萝卜螺更喜爱牧食水绵和刚毛藻。Excessive proliferation of filamentous green algae(FGA)is a common problem in early stage of recovery of submerged macrophytes in lake restoration.The excessive proliferation of filamentous green algae affected the recovery and even led to the re-extinction of submerged macrophytes.In freshwater ecosystem,snails can graze both of submergedenter,Hangzhou 31300,China macrophyte and algae.However,it is still controversial whether snails can preferentially graze FGA to benefit the recovery of submerged macrophytes.In this study,we assessed the preference of Bellamya aeruginosa and Radix swinhoei for five living plants,namely Myriophyllum spicatum,Vallisneria denseserrulata,Hydrilla verticillate,Spirogyra sp.and Chladophora sp.These plants are widely distributed in Chinese shallow lakes.Both of snails had active grazing selectivity to the FGA,and grazing avoidance to the three submerged macrophytes.The losses in plant weight were consistent with snails’grazing preferences.Compared with the submerged plants the results showed that,both of snails preferred to graze on FGA.

关 键 词：铜锈环棱螺 椭圆萝卜螺 丝状绿藻 沉水植物 牧食选择 

分 类 号：Q958[生物学—动物学]