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| 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, Ayyaru2; Rajkumar, Mayalagu1,2; Sun Jun1; Parida, Ajay3; Maran, Venmathi Balu Alagar4 | |
| 2011 | |
| 发表期刊 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| ISSN | 0254-4059 |
| 卷号 | 29期号:1页码:162-166 |
| 文章类型 | Article |
| 摘要 | 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 (day 1) to 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.; 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 (day 1) to 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 Control |
| 学科领域 | Marine & Freshwater Biology ; Oceanography |
| DOI | 10.1007/s00343-011-0101-z |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000286203200021 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/11673 |
| 专题 | 海洋生态与环境科学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Annamalai Univ, Ctr Adv Study Marine Biol, Parangipettai 608502, Tamil Nadu, India 3.MS Swaminathan Res Fdn, Madras 600113, Tamil Nadu, India 4.Hiroshima Univ, Grad Sch Biosphere Sci, Takehara Marine Sci Stn, Hiroshima 7250024, Japan |
| 推荐引用方式 GB/T 7714 | Gopalakrishnan, Ayyaru,Rajkumar, Mayalagu,Sun Jun,et al. 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]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2011,29(1):162-166. |
| APA | Gopalakrishnan, Ayyaru,Rajkumar, Mayalagu,Sun Jun,Parida, Ajay,&Maran, Venmathi Balu Alagar.(2011).Integrated biological control of water hyacinths, Eichhornia crassipes by a novel combination of grass carp, Ctenopharyngodon idella (Valenciennes, 1844), and the weevil, Neochetina spp..CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,29(1),162-166. |
| MLA | Gopalakrishnan, Ayyaru,et al."Integrated biological control of water hyacinths, Eichhornia crassipes by a novel combination of grass carp, Ctenopharyngodon idella (Valenciennes, 1844), and the weevil, Neochetina spp.".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 29.1(2011):162-166. |
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