Results 21 to 30 of about 509 (144)

A Computer Simulation Model of Waterhyacinth and Weevil Interactions [PDF]

open access: yes, 1991
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]

open access: yes, 2011
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]

open access: yes, 2004
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  

Establishment of Neochetina Spp.: Their Pattern of Local Dispersal and Age Structure at the Release Site [PDF]

open access: yes, 2001
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  

Temperature Optima for Development of Neochetina eichhorniae and Orthogalumna terebrantis

open access: yesThe Florida Entomologist, 1977
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

Agrobiodiversity and Its Conservation in Nepal [PDF]

open access: yes, 2020
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  

S. Dharmaputra [PDF]

open access: yes, 1999
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  

Persebaran Agens Hayati Neochetina Spp. (Coleoptera: Curculionidae) Di Jawa Barat Dan DKI Jakarta [PDF]

open access: yes, 2006
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  

The decline of water hyacinth on Lake Victoria was due to biological control by Neochetina spp [PDF]

open access: yes, 2007
There has been some debate recently about the cause of the decline of water hyacinth on Lake Victoria. While much of this evidence points to classical biological control as the major factor, the El Niño associated weather pattern of the last quarter of ...
Ajuonub, O   +10 more
core   +1 more source

Infectivity of Insect Pathogens against Neochetina eichhorniae, a Biological Control Agent of Waterhyacinth

open access: yesThe Florida Entomologist, 1991
Several insect pathogens were tested for infectivity against Neochetina eichhorniae Warner (Coleoptera:Curculionidae), a biological control agent for waterhyacinth, Eichhornia crassipes (Mart.) Solms. No mortality resulted from exposure to 21 strains of Bacillus thuringiensis.
Kim H. Haag, Drion G. Boucias
openaire   +1 more source

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