椭圆萝卜螺Radix swinhoei(H.Adams)对三种沉水植物的牧食选择

被引：18

作者：

李宽意 ^{[1
]}

刘正文 ^{[1
]}

胡耀辉 ^{[1
]}

王传海 ^{[2
]}

机构：

[1] 中国科学院南京地理与湖泊研究所

[2] 南京信息工程大学

来源：

生态学报 | 2006年 / 10期

关键词：

椭圆萝卜螺; 牧食; 沉水植物; 太湖;

D O I：

暂无

中图分类号：

Q958.8 [水生动物学];

学科分类号：

071012 ; 0713 ;

摘要：

报道了2005年79月在太湖试验基地进行的椭圆萝卜螺对沉水植物牧食的实验结果。结果表明,椭圆萝卜螺对3种沉水植物的平均牧食率为7·87mg·g-1·d-1,其中对苦草的牧食率最高(13·63mg·g-1·d-1),马来眼子菜次之(9·66mg·g-1·d-1),轮叶黑藻最低(0·31mg·g-1·d-1),且牧食率与螺规格呈显著负相关。椭圆萝卜螺对沉水植物的牧食具有选择性,喜食苦草而较少选食其他两种沉水植物。椭圆萝卜螺的食物选择性能力与其规格有关,随着生长对沉水植物的选择性加强。探讨了椭圆萝卜螺对沉水植物的选食机理。

引用

页码：3221 / 3224

页数：4

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