Results 81 to 90 of about 882 (122)
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Environmental Entomology, 1986
Toxicities of commonly used water hyacinth herbicides and additives to water hyacinth weevils, Neochetina eichhorniae Warner and N. bruchi Hustache, were tested in the laboratory. Weevils were either sprayed while on water hyacinth plants or dipped directly into the compounds tested.
K. Haag
semanticscholar +2 more sources
Toxicities of commonly used water hyacinth herbicides and additives to water hyacinth weevils, Neochetina eichhorniae Warner and N. bruchi Hustache, were tested in the laboratory. Weevils were either sprayed while on water hyacinth plants or dipped directly into the compounds tested.
K. Haag
semanticscholar +2 more sources
Hydrobiologia, 1984
Water hyacinth Eichhornia crassipes (Mart.) Solms. is an aquatic weed that infests most of the White Nile system in the Sudan. Serious economical and ecological problems are caused by this weed. The two weevils Neochetina eichhorniae and Neochetina bruchi were imported and released in an attempted biological control against the weed.
M. Bashir, Z. E. E. Abjar, N. Irving
semanticscholar +2 more sources
Water hyacinth Eichhornia crassipes (Mart.) Solms. is an aquatic weed that infests most of the White Nile system in the Sudan. Serious economical and ecological problems are caused by this weed. The two weevils Neochetina eichhorniae and Neochetina bruchi were imported and released in an attempted biological control against the weed.
M. Bashir, Z. E. E. Abjar, N. Irving
semanticscholar +2 more sources
BioControl, 2007
Water hyacinth (Eichhornia crassipes (Mart.) Solms-Laub.) remains a problem waterweed worldwide, for which biological control offers a sustainable solution. Under laboratory conditions, we investigated the interaction between two established weevil species Neochetina eichhorniae (Warner), Neochetina bruchi Hustache and the mirid Eccritotarsus ...
O. Ajuonu +4 more
semanticscholar +2 more sources
Water hyacinth (Eichhornia crassipes (Mart.) Solms-Laub.) remains a problem waterweed worldwide, for which biological control offers a sustainable solution. Under laboratory conditions, we investigated the interaction between two established weevil species Neochetina eichhorniae (Warner), Neochetina bruchi Hustache and the mirid Eccritotarsus ...
O. Ajuonu +4 more
semanticscholar +2 more sources
Biological Control, 1999
Abstract The weevils Neochetina eichhorniae and N. bruchi were released in the USA for waterhyacinth control during the early 1970s and have since been used in many other countries. Although successful control has been reported, questions regarding the efficacy of these insects remain unresolved. This lack of consensus may be attributed to the subtle
F. Dray, G. Jubinsky, A. Leslie
semanticscholar +2 more sources
Abstract The weevils Neochetina eichhorniae and N. bruchi were released in the USA for waterhyacinth control during the early 1970s and have since been used in many other countries. Although successful control has been reported, questions regarding the efficacy of these insects remain unresolved. This lack of consensus may be attributed to the subtle
F. Dray, G. Jubinsky, A. Leslie
semanticscholar +2 more sources
Biocontrol Science and Technology, 2008
Abstract The integration of biological and herbicidal methods is advocated to manage waterhyacinth, but this can only be achieved when herbicides are nontoxic to the biocontrol agent. Therefore, laboratory experiments were conducted to determine the toxic effect of herbicides on the insect biocontrol agent, the waterhyacinth weevil, Neochetina bruchi ...
Puja Ray, Sushilkumar, A. Pandey
semanticscholar +2 more sources
Abstract The integration of biological and herbicidal methods is advocated to manage waterhyacinth, but this can only be achieved when herbicides are nontoxic to the biocontrol agent. Therefore, laboratory experiments were conducted to determine the toxic effect of herbicides on the insect biocontrol agent, the waterhyacinth weevil, Neochetina bruchi ...
Puja Ray, Sushilkumar, A. Pandey
semanticscholar +2 more sources
CABI Compendium, 2022
This datasheet on Neochetina bruchi covers Identity, Distribution, Hosts/Species Affected, Natural Enemies, Further Information.
semanticscholar +1 more source
This datasheet on Neochetina bruchi covers Identity, Distribution, Hosts/Species Affected, Natural Enemies, Further Information.
semanticscholar +1 more source
Biological Control, 2001
Abstract The potential effects of Beauveria bassiana, an entomopathogen, on the biological control agent of water hyacinth, Neochetina bruchi, were assessed. In bioassays, B. bassiana induced mortality of the eggs, larvae, and adults when the N. bruchi stages were either sprayed or dipped in conidia concentrations of 5 × 105, 5 × 106, 5 × 107, 5 ...
G. Chikwenhere, S. Vestergaard
semanticscholar +2 more sources
Abstract The potential effects of Beauveria bassiana, an entomopathogen, on the biological control agent of water hyacinth, Neochetina bruchi, were assessed. In bioassays, B. bassiana induced mortality of the eggs, larvae, and adults when the N. bruchi stages were either sprayed or dipped in conidia concentrations of 5 × 105, 5 × 106, 5 × 107, 5 ...
G. Chikwenhere, S. Vestergaard
semanticscholar +2 more sources
The Florida Entomologist, 1992 We studied Neochetina eichhorniae and N. bruchi populations at 22 sites in southern Florida during mid-summer 1985. Species composition, reproductive females (as a percentage of total females), and flight muscle development of N. eichhorniae populations varied greatly among sites. N.
F. Dray
semanticscholar +2 more sources
BioControl, 2003
Water hyacinth (Eichhornia crassipes (Mart.) Solms.)creates severe problems in the irrigationdistricts of Mexico, particularly in westernSinaloa. Therefore water hyacinth weevils(Neochetina eichhorniae Warner and N. bruchi Hustache), imported from the USA in1993, were used to initiate a biologicalcontrol program.
J. A. Aguilar +3 more
semanticscholar +2 more sources
Water hyacinth (Eichhornia crassipes (Mart.) Solms.)creates severe problems in the irrigationdistricts of Mexico, particularly in westernSinaloa. Therefore water hyacinth weevils(Neochetina eichhorniae Warner and N. bruchi Hustache), imported from the USA in1993, were used to initiate a biologicalcontrol program.
J. A. Aguilar +3 more
semanticscholar +2 more sources
Zeitschrift für Angewandte Entomologie, 2009
AbstractWater hyacinth attained the status of a major aquatic weed in the Sudan in 1959. It was probably introduced into the country from Zaire in the mid fifties. The annual cost of the chemical control measures is estimated to be over one million Sudanese pounds.
Z. E. E. Abjar, M. Bashir
semanticscholar +2 more sources
AbstractWater hyacinth attained the status of a major aquatic weed in the Sudan in 1959. It was probably introduced into the country from Zaire in the mid fifties. The annual cost of the chemical control measures is estimated to be over one million Sudanese pounds.
Z. E. E. Abjar, M. Bashir
semanticscholar +2 more sources