Insectivorous bats in semi-arid agroecosystems − effects on foraging activity and implications for insect pest control

2018 ◽  
Vol 261 ◽  
pp. 80-92 ◽  
Author(s):  
Idan Kahnonitch ◽  
Yael Lubin ◽  
Carmi Korine
Keyword(s):  
Pest Control ◽  
Insect Pest ◽  
Foraging Activity ◽  
Insectivorous Bats ◽  
Insect Pest Control ◽  
Semi Arid

scholarly journals Cuticle degrading enzyme production by some isolates of the entomopathogenic fungus, Metarhizium anisopliae (Metsch.)

2014 ◽  
Vol 20 ◽  
pp. 25-32
Author(s):  
N Sapna Bai ◽  
OK Remadevi ◽  
TO Sasidharan ◽  
M Balachander ◽  
Priyadarsanan Dharmarajan
Keyword(s):  
Pest Control ◽  
Entomopathogenic Fungi ◽  
Enzyme Production ◽  
Insect Pest ◽  
Strong Relationship ◽  
Control Agent ◽  
Mechanical Pressure ◽  
Degrading Enzyme ◽  
Insect Pest Control ◽  
Degrading Enzymes

Context: Entomopathogenic fungi have been recognized as viable alternate options to chemicals in insect pest control. Unlike other potential biocontrol agents, fungi do not have to be ingested to infect their hosts but invade directly through the cuticle. Entry into the host involves both enzymic degradation of the cuticle barrier and mechanical pressure. Production of a range of cuticle degrading enzymes is an important event in the interaction of entomopathogenic fungi and host. Enzyme secretion is believed to be a key contributor for the virulence of a fungal isolate. Objectives: The potentiality of nine isolates of M. anisopliae were tested to produce to produce three important cuticle degrading enzymes, viz., chitinase, protease and lipase. Materials and Methods: Nine isolates of M. anisopliae were evaluated for chitinase, protease and lipase enzyme production by determining the enzyme index and activities. Results: Chitinase index of these isolates were ranged from 1.5 to 2.2 and chitinolytic activity from 0.525 to 1.560 U/ml. The isolates showed protease index in the range of 1.2 to 3.3 and the activity ranged from 0.020 to 0.114 U/ml. Lipase index ranged from 1.15 to 7.0 and the enzyme activity ranged from 0.153 to 0.500 U/ml. A strong relationship was observed between virulence of the isolates and cuticle degrading enzyme production as increased enzyme production was observed for virulent isolates. Conclusion: In the present study three isolates as (MIS2, MIS7 and MIS13) demonstrated cuticle degrading enzyme (CDE) that indicate higher virulence based on the bioassay conducted earlier by the authors as strongly substantiating the role of CDEs is considered the virulence of Metarhizium isolates. So, these isolates may be as ecofriendly insect-pest control agent in future. DOI: http://dx.doi.org/10.3329/jbs.v20i0.17648 J. bio-sci. 20: 25-32, 2012

Regulatory roles of microRNAs in insect pests: prospective targets for insect pest control

2021 ◽  
Vol 70 ◽  
pp. 158-166
Author(s):  
Qiang Zhang ◽  
Wei Dou ◽  
Clauvis Nji Tizi Taning ◽  
Guy Smagghe ◽  
Jin-Jun Wang
Keyword(s):  
Pest Control ◽  
Insect Pests ◽  
Insect Pest ◽  
Insect Pest Control

scholarly journals The Potential of Using Indigenous Pesticidal Plants for Insect Pest Control to Small Scale Farmers in Africa

2015 ◽  
Vol 06 (19) ◽  
pp. 3164-3174 ◽  
Author(s):  
Angela G. Mkindi ◽  
Kelvin M. Mtei ◽  
Karoli N. Njau ◽  
Patrick A. Ndakidemi
Keyword(s):  
Pest Control ◽  
Insect Pest ◽  
Small Scale ◽  
Insect Pest Control ◽  
Small Scale Farmers

scholarly journals Evaluation of New Systemic Insecticides for Elm Insect Pest Control

1996 ◽  
Vol 14 (1) ◽  
pp. 22-26 ◽  
Author(s):  
D. Casey Sclar ◽  
Whitney S. Cranshaw
Keyword(s):  
Pest Control ◽  
Woody Plants ◽  
Insect Pests ◽  
Insect Pest ◽  
Leaf Beetle ◽  
Pest Species ◽  
Shade Trees ◽  
Insect Pest Control ◽  
Systemic Activity ◽  
Systemic Insecticides

Abstract Use of systemic insecticides that can be injected either into the root system or trunk of woody plants provides several potential advantages, notably in control of drift during application. Recently, new classes of insecticides with systemic activity have been developed, which may supplant the organophosphate and carbamate systemic insecticides that have previously been available. To evaluate their potential to control insects affecting shade trees, studies were conducted using imidacloprid and abamectin on elm. Soil injections of imidacloprid appeared particularly effective, controlling all three of the target pest species in this study (elm leaf beetle, European elm scale, elm leaf aphid). Both imidacloprid and abamectin also were effective against at least some elm insects when injected into trunks. Persistence of irnidacloprid was unusually long, providing second season control of all elm insect pests, although root uptake following soil injections was slow.

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