首页|期刊导航|中国海洋湖沼学报（英文版）|Integrated biological control of water hyacinths, Eichhornia crassipes by a novel combination of grass carp, Ctenopharyngodon idella (Valenciennes, 1844), and the weevil, Neochetina spp.
Integrated biological control of water hyacinths, Eichhornia crassipes by a novel combination of grass carp, Ctenopharyngodon idella (Valenciennes, 1844), and the weevil, Neochetina spp.
GOPALAKRISHNAN Ayyaru RAJKUMAR Mayalagu SUN Jun PARIDA Ajay VENMATHI MARAN Balu Alagar
中国海洋湖沼学报（英文版）2011，Vol.29Issue(1)：162-166,5.
中国海洋湖沼学报（英文版）2011，Vol.29Issue(1)：162-166,5.DOI:10.1007/s00343-011-0101-z
Integrated biological control of water hyacinths, Eichhornia crassipes by a novel combination of grass carp, Ctenopharyngodon idella (Valenciennes, 1844), and the weevil, Neochetina spp.
Integrated biological control of water hyacinths, Eichhornia crassipes by a novel combination of grass carp, Ctenopharyngodon idella (Valenciennes, 1844), and the weevil, Neochetina spp.
摘要
Abstract
The efficacy of grass carp Ctenopharyngodon idella (Cyprinidae) and weevils Neochetina spp. (Curculionidae) to control the aquatic weed, water hyacinth, is investigated in a square net cage (happas) setting at a farm in Cuddalore District, South India. This novel combination of insects and fish is found to be superior to individual treatments for controlling the weed growth within 110 d. The biomass of the weed, number of plants, percentage of flowered plants and chlorophyll contents were studied. The weed biomass is reduced from 5 kg (dayto 0.33 kg (day 110) when exposed to grass carp and weevils. The number of plants is reduced to 0.75 in grass carp and weevil exposed happas, while it is 741.5 in the control. The mean number of leaves per plant is also reduced. In addition, the chlorophyll a and b are significantly reduced in happas exposed to the combination of fish and insects when compared to the other treatments. Based on the results of this study, we consider the combined use of grass carp and weevils to be more efficient and sustainable for managing water hyacinths than the use of these organisms individually.关键词
water hyacinth/grass carp/weevil/biological controlKey words
water hyacinth/grass carp/weevil/biological control引用本文复制引用
GOPALAKRISHNAN Ayyaru,RAJKUMAR Mayalagu,SUN Jun,PARIDA Ajay,VENMATHI MARAN Balu Alagar..Integrated biological control of water hyacinths, Eichhornia crassipes by a novel combination of grass carp, Ctenopharyngodon idella (Valenciennes, 1844), and the weevil, Neochetina spp.[J].中国海洋湖沼学报（英文版）,2011,29(1):162-166,5.基金项目
Supported by the Chinese Academy of Sciences Research Fellowship for International Young Researchers to M. Rajkumar hosted by J. SUN, and the Knowledge Innovation Project of the Chinese Academy of Sciences (Nos. KZCX2-YW-QN-205, KZCX2-YW-213-2) to J. SUN （Nos. KZCX2-YW-QN-205, KZCX2-YW-213-2）
