Toxicity of Propylene Oxide at Low Pressure Against Life Stages of Four Species of Stored Product Insects

2004 ◽  
Vol 97 (2) ◽  
pp. 281-285 ◽  
Author(s):  
Ali A. Isikber ◽  
Shlomo Navarro ◽  
Simcha Finkelman ◽  
Miriam Rindner ◽  
Avi Azrieli ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Low Pressure ◽  
Life Stages ◽  
Stored Product Insects

scholarly journals Effects of Low Pressure Treatment on the Mortality of Different Life Stages of Indianmeal moth (Plodia interpunctella) and the Quality of Dried Chinese Jujube

Insects ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 136
Author(s):  
Juncai Hou ◽  
Lushuai Zhao ◽  
Shaojin Wang
Keyword(s):  
Exposure Time ◽  
Life Stage ◽  
Plodia Interpunctella ◽  
Low Pressure ◽  
Survival Ratio ◽  
Pressure Treatment ◽  
Life Stages ◽  
Chinese Jujube ◽  
Pressure System ◽  
Indianmeal Moth

Low pressure technology is a potential non-chemical method to control insects in agriculture products. The purpose of this study was to determine the tolerance of different life stages of indianmeal moth (Plodia interpunctella) to low pressure and to validate the mortality of P. interpunctella when infesting Chinese jujube (Zizyphus jujuba Miller) using a low pressure system. Results showed that larvae were the most tolerant life stage of P. interpunctella, with a minimum exposure time of 41.4 h at 1.3 kPa and 25 °C to obtain 100% mortality. Pupae were the most susceptible life stage, with a lethal time of 12 h under the above low pressure conditions. The survival ratio of P. interpunctella in jujube decreased with increasing exposure time and reached 0% when the jujubes with P. interpunctella larvae were exposed to low-pressure treatment for 41.6 h at 1.3 kPa and 25 °C. Although the color, moisture, soluble solid, and vitamin C contents were slightly changed, there was no significant quality difference in these factors between control and treated jujubes. The information provided by this study is useful in developing effective non-chemical low-pressure treatments for disinfesting agricultural products.

scholarly journals Mobility and Dispersal of Two Cosmopolitan Stored-Product Insects Are Adversely Affected by Long-Lasting Insecticide Netting in a Life Stage-Dependent Manner

2020 ◽  
Vol 113 (4) ◽  
pp. 1768-1779 ◽  
Author(s):  
Rachel V Wilkins ◽  
Kun Yan Zhu ◽  
James F Campbell ◽  
William R Morrison
Keyword(s):  
Life Stage ◽  
Differential Susceptibility ◽  
Video Tracking ◽  
Dispersal Ability ◽  
Dependent Manner ◽  
Life Stages ◽  
Tropical Regions ◽  
Vector Borne Diseases ◽  
Stored Product Insects ◽  
Promising Tool

Abstract Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and Trogoderma variabile Ballion (Coleoptera: Dermestidae) are two stored-product insects that cause extensive damage to a variety of postharvest commodities. Long-lasting insecticide-incorporated netting (LLIN), commonly used to control vector-borne diseases in tropical regions, has only been recently studied in an agricultural setting. While prior research showed that LLIN was successful against stored-product beetles, little is known about differential susceptibility among stored-product insect life stages. The aim of this study was to evaluate LLIN efficacy against immature T. castaneum and T. variabile compared with adults. Movement and dispersal ability were evaluated after exposure to LLIN or an untreated, control netting. For the movement assay, video-tracking software recorded the postexposure effects of LLIN on distance traveled and velocity of the insects in 2-h trials. For the dispersal assay, insects were exposed to the netting then released into one end of a PVC pipe and allowed 48 h to disperse to a novel food patch located at the opposite end of the pipe. Our study found that movement and dispersal ability of T. variabile and T. castaneum are significantly reduced, often by multiple-fold, after LLIN exposure, with the larval stage of each species more tolerant to the insecticide netting than adults. These results indicate that LLIN is a promising tool for use in intercepting immigrating insects of different life stages in food facilities to protect stored products.

Influence of temperature on toxicity of propylene oxide at low pressure againstTribolium castaneum

2004 ◽  
Vol 32 (5) ◽  
pp. 451-458 ◽  
Author(s):  
A. A. Isikber ◽  
S. Navarro ◽  
S. Finkelman ◽  
M. Rindner ◽  
R. Dias
Keyword(s):  
Propylene Oxide ◽  
Low Pressure ◽  
Influence Of Temperature ◽  
Influence Of Temperature On

Effects of Electrical Discharges in Low Pressure Gases on the Morphology of Polyethylene Crystals

1974 ◽  
Vol 32 ◽  
pp. 544-545
Author(s):  
L.H. Bolz ◽  
D.H. Reneker
Keyword(s):  
Power Distribution ◽  
Electrical Discharge ◽  
Dielectric Breakdown ◽  
Ionic Species ◽  
Low Pressure ◽  
Polymer Surfaces ◽  
Electrical Discharges ◽  
Adhesive Bonds ◽  
Power Distribution Lines ◽  
Modification Of The Surface

The attack, on the surface of a polymer, by the atomic, molecular and ionic species that are created in a low pressure electrical discharge in a gas is interesting because: 1) significant interior morphological features may be revealed, 2) dielectric breakdown of polymeric insulation on high voltage power distribution lines involves the attack on the polymer of such species created in a corona discharge, 3) adhesive bonds formed between polymer surfaces subjected to such SDecies are much stronger than bonds between untreated surfaces, 4) the chemical modification of the surface creates a reactive surface to which a thin layer of another polymer may be bonded by glow discharge polymerization.

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