您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

The current distribution of invasive mrigal carp (Cirrhinus mrigala) in Southern China, and its potential impacts on native mud carp (Cirrhinus molitorella) populations

文献类型： 外文期刊

作者： Yu, Fan Dong 1 ; Gu, Dang En 1 ; Tong, Yan Nan 3 ; Li, Gao Jun 3 ; Wei, Hui 1 ; Mu, Xi Dong 1 ; Xu, Meng 1 ; Yang, Ye Xin 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Recreat Fisheries, Minist Agr & Rural Affairs, Guangzhou, Guangdong, Peoples R China

2.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai, Peoples R China

3.Hainan Acad Ocean & Fisheries Sci, Haikou, Hainan, Peoples R China

关键词： Invasive species; distribution; temperature; eutrophication; mrigal carp (Cirrhinus mrigala); mud carp (Cirrhinus molitorella); China

期刊名称：JOURNAL OF FRESHWATER ECOLOGY （ 影响因子：1.132； 五年影响因子：1.593 ）

ISSN： 0270-5060

年卷期： 2019 年 34 卷 1 期

页码：

收录情况： SCI

摘要： Invasive species are a major and growing threat to China's native freshwater biodiversity. They have caused species extinctions, biodiversity loss, and environmental changes. Mrigal carp (Cirrhinus mrigala), one of the most widespread and invasive of freshwater fish species, now occurs in major rivers throughout southern China. We report the current (to 2017) distribution of mrigal carp throughout southern China, and experiments with temperature, water quality and food availability, that assess possible impacts of this species on populations of native mud carp (C. molitorella)". In the wild, the mud carp to mrigal carp weight ratio was 1:1.65. Mrigal carp were a dominant species in some rivers of southern China, such as Liuxi River, Zengjiang River and the Zhaoqing section of Xijiang River. Manipulative experiments reveal mrigal carp to be more tolerant of colder temperature, more eutrophic conditions, and lower dissolved oxygen levels than mud carp. In food-limited experiments, mrigal carp displayed no direct aggression towards mud carp, but they did snatch food from them, and excluded them from eating. Mud carp growth was curtailed in the presence of mrigal carp in food-limited treatments, with a growth rate 2.71%, only 17.02% of that in treatments where carp were fed to satiation. In satiation treatments, mrigal carp also grew up to 2.21 times faster than mud carp. Our results indicate that mrigal carp will outcompete mud carp for resources and habitat, and that both its distribution and population will increase in the future.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台