Neochetina eichhorniae (Coleoptera: Curculionidae) is a natural enemy of water hyacinth and its morphology as well as biology has been investigated previously. In this study, the host range of N. eichohorniae was examined using the following 7 groups of plants: Pontederiaceae (water hyacinth, Eichhornia crassipes; hastate-leaf pondweed, Monochoria ...
openaire +2 more sources
A Computer Simulation Model of Waterhyacinth and Weevil Interactions [PDF]
A personal computer simulation model termed INSECT has been developed to evaluate biological control of waterhyacinth (Eichhornia crassipes (Mart.) Solms.) by two species of weevil (Neochetina eichhorniae Warner, and N. bruchi Hustache).
Akbay, Kunter S. +2 more
core +1 more source
ESTABLISHMENT OF NEOCHETINA SPP.: THEIR PATTERN OF LOCAL DISPERSAL AND AGE STRUCTURE AT THE RELEASE SITE [PDF]
Study on the distribution pattern and age structure ofNeochetina spp. (Coleoptera: Curculionidae) at the release site was conducted to know a) the distribution pattern of the weevil, b) its establishment status, c) its survival rate in the field, and d ...
KASNO, KASNO +3 more
core +2 more sources
Do tissue carbon and nitrogen limit population growth of weevils introduced to control waterhyacinth at a site in the Sacramento-San Joaquin Delta, California? [PDF]
Waterhyacinth (Eichhornia crassipes(Mart.) Solms), is a serious problem in the Sacramento Delta. Two weevil species (Neochetina bruchi Hustache and N. eichhorniae Warner) have been introduced as biological control agents. The purpose of this study was
Ksander, Gregory G., Spencer, David F.
core
Agrobiodiversity and Its Conservation in Nepal [PDF]
Nepal is a part of the world\u27s biodiversity hotspot and ranks the 49th in the world for biodiversity. Agrobiodiversity and its conservation status were studied through literature review, field survey, key informant survey and focus group discussion ...
Ghimire, K. H. (Krishna) +8 more
core
Persebaran Agens Hayati Neochetina Spp. (Coleoptera: Curculionidae) Di Jawa Barat Dan DKI Jakarta [PDF]
The establishment of Neochetina spp. as biocontrol agent of waterhyacinth are related to the weevil's ability to disperse and to increase their population sizes. The objective of this research was to study the distribution and abundance of Neochetina spp.
Buchori, D. (Damayanti) +4 more
core
First report of establishment of two weevils, Neochetina bruchi and Neochetina eichhorniae Warner (Coleoptera: Curculionidae), released against water hyacinth [Pontederia crassipes Mart.] in the Philippines [PDF]
Water hyacinth, Pontederia crassipes Mart. [syn. Eichhornia crassipes (Mart.) Solms.] of the family Pontederiaceae, is one of the world’s worst aquatic weeds and a major problem in the Philippines, covering lakes, and blocking drainage and irrigation ...
Day, Michael D. +3 more
core
Temperature Optima for Development of Neochetina eichhorniae and Orthogalumna terebrantis
Mottled waterhyacinth weevils, Neochetina eichhorniae Warner, and waterhyacinth mites, Orthogalumna terebrantis Wallwork, were tested for mortality, feeding, oviposition, and emergence at 4 temperature regimes, viz. 5-25@*, 10-30@*, 15-35@*, and 20-40@*C. Highest mortality for both species occurred at the 2 extreme regimes.
openaire +1 more source
The study on the integrated use of the chevroned water hyacinth weevil (Neochetina bruchi Mustache) and the water hyacinth blight disease (Alternaria eichhorniae Nag Raj & Ponnappa) in suppressing water hyacinth growth was carried out under field ...
DHARMAPUTRA, O. S. (OKKY) +4 more
core
Establishment of Neochetina Spp.: Their Pattern of Local Dispersal and Age Structure at the Release Site [PDF]
Study on the distribution pattern and age structure ofNeochetina spp. (Coleoptera: Curculionidae) at the release site was conducted to know a) the distribution pattern of the weevil, b) its establishment status, c) its survival rate in the field, and d ...
KASNO, K. (KASNO) +3 more
core

