Results 11 to 20 of about 71 (56)

Abiotic and biotic influences on the performance of two biological control agents, Neochetina bruchi and N. eichhorniae, in the Sacramento-San Joaquin River Delta, California (USA)

open access: yesBiological Control, 2021
Abstract Variability in the effectiveness of biological control programs can be due to a myriad of abiotic and biotic interactions. Here, we explore these interactions in relation to the suboptimal biological control on the invasive water hyacinth, Pontederia (=Eichhornia) crassipes, by two weevils, Neochetina bruchi and N.
J.V. Hopper   +5 more
openaire   +2 more sources

A Comparison of Regression Tree Approaches to Modelling the Efficacy of Water Hyacinth Biocontrol Using Multitemporal Spectral Datasets

open access: yesJournal of Spectroscopy, Volume 2018, Issue 1, 2018., 2018
Water hyacinth (Eichhornia crassipes) is an exotic plant species that is effectively controlled by Neochetina spp. weevils. This study is aimed at determining if spectroscopic data may be utilized to predict insect‐induced stress on water hyacinth plants.
Na’eem Hoosen Agjee   +4 more
wiley   +1 more source

The Impact of Simulated Spectral Noise on Random Forest and Oblique Random Forest Classification Performance

open access: yesJournal of Spectroscopy, Volume 2018, Issue 1, 2018., 2018
Hyperspectral datasets contain spectral noise, the presence of which adversely affects the classifier performance to generalize accurately. Despite machine learning algorithms being regarded as robust classifiers that generalize well under unfavourable noisy conditions, the extent of this is poorly understood. This study aimed to evaluate the influence
Na’eem Hoosen Agjee   +4 more
wiley   +1 more source

Effects of Host Quality on Flight Muscle Development inNeochetina eichhorniaeandN. bruchi(Coleoptera: Curculionidae)

open access: yesFlorida Entomologist, 2010
ABSTRACT Neochetina eichhorniae Warner and N. bruchi Hustache, biological control agents of Eichhornia crassipes (Martius) Solms-Laubach, are usually incapable of flight but occasionally develop indirect flight muscles enabling dispersal. This reportedly alternates with oogenesis and is reversible. We examined host quality as a possible explanation for
Ted D. Center, F. Allen Dray
openaire   +1 more source

INTEGRATED USE OF NEOCHETINA BRUCHI AND ALTERNARIA EICHHORNIAE IN CONTROLLING WATER HYACINTH

open access: yesBIOTROPIA
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 conditions at Situ Bagendit lake, Garut, West Java.
OKKY S. DHARMAPUTRA   +4 more
openaire   +4 more sources

Laboratory Study to Limitation Degree-Days Which Prerequisite for Stages Development of Waterhyacinth Chevroune weevil Neochetina bruchi (Hustache) Coleoptera: Curculiondeae and the Lowest Developmental Threshold

open access: yesJournal of Biotechnology Research Center, 2014
The results of this study showed that the lowest developmental threshold of eggs, larvae and pupae of N. bruchi was 12, 12 and 11°C respectively at 20,25 and 30°C. While there were no hatching and development of larvae and pupae at 15°C ,While 35°C killed all the stages were tested.
openaire   +3 more sources

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