نتایج جستجو برای: sublethal dose

تعداد نتایج: 313593  

2013
Takashi MATSUMOTO

The negative effects of a commonly applied systemic insecticide, neonicotinoid, on the honey bee Apis mellifera L. are of great concern worldwide, as the use of the chemical is expanding. Recently, special attention has been paid to the sublethal effects of insecticides. An increasing number of studies has identified sublethal effects on the honey bee in the laboratory or in experimental cages,...

2017
Brittany Campbell Rebecca Baldwin Philip Koehler

To date, few studies have evaluated chitin synthesis inhibitors against bed bugs, although they would provide an alternative mode of action to circumvent insecticide resistance. Acute and sublethal effects of lufenuron were evaluated against two strains of the common bed bug. Combined acute and sublethal effects were used to calculate effective doses. The dose that was effective against 50% of ...

2016
Wan Fatma ZUHARAH Rattanam AHBIRAMI Hamady DIENG Maniam THIAGALETCHUMI Nik FADZLY

Plant derived insecticides have considerable potential for mosquito control because these products are safer than conventional insecticides. This study aimed to investigate sublethal activities of Ipomoea carica or railway creeper crude acethonilic extract against life history trait of dengue vectors, Aedes albopictus and Aedes aegypti. The late third instar larvae of Ae. albopictus and Ae. aeg...

F Zal M A Mosleh-Shirazi M Daneshmand R Zare S M J Mortazavi, Z Mostafavi-Pour

Background: Over the past few years, the rapid use of high frequency electromagnetic fields like mobile phones has raised global concerns about the negative health effects of its use. Adaptive response is the ability of a cell or tissue to better resist stress damage by prior exposure to a lesser amount of stress. This study aimed to assess whether radiofrequency radiation can induce adaptive r...

2017
Sydney E Crawley Jennifer R Gordon Katelyn A Kowles Michael F Potter Kenneth F Haynes

Sublethal exposure to an insecticide may alter insect feeding, mating, oviposition, fecundity, development, and many other life history parameters. Such effects may have population-level consequences that are not apparent in traditional dose-mortality evaluations. Earlier, we found that a routinely used combination insecticide that includes a pyrethroid and a neonicotinoid (Temprid® SC) had del...

Journal: :journal of biomedical physics and engineering 0
s m j mortazavi 1medical physics and medical engineering department, school of medicine, shiraz university of medical sciences, shiraz, z mostafavi-pour biochemistry department, medical school, shiraz university of medicinal sciences, shiraz, ir iran 3recombinant protein lسازمان های دیگر: 3recombinant protein laboratory, school of advanced medical sciences and technologies, shiraz university

background: over the past few years, the rapid use of high frequency electromagnetic fields like mobile phones has raised global concerns about the negative health effects of its use. adaptive response is the ability of a cell or tissue to better resist stress damage by prior exposure to a lesser amount of stress. this study aimed to assess whether radiofrequency radiation can induce adaptive r...

Journal: :Blood 1995
J Barquinero H P Kiem C von Kalle B Darovsky S Goehle T Graham K Seidel R Storb F G Schuening

We have studied the role of different conditioning regimens for engraftment of genetically marked hematopoietic repopulating cells in dogs. Peripheral blood (PB) and/or marrow cells collected after treatment with recombinant canine stem cell factor (rcSCF) or cyclophosphamide were transduced in a vector-containing long-term culture system. Three different vector-producing cell lines with simila...

Journal: :دانش گیاه پزشکی ایران 0
پرویز شیشه بر استاد دانشگاه شهیدچمران اهواز هاجر فعال محمدعلی دانشجوی سابق ارشد

sublethal effects of two juvenile hormone analogue, flufenoxuron and lufenuron, were evaluated on larval, pupal and adult stages of habrobracon hebetor say under laboratory conditions. dose-response bioassays were carried out on the insect’s immature and adult stages through dipping and contact residue methods. in the sublethal effect tests, field rates (500 ppm) of the two insecticides were em...

Background: Doxorubicin, by aggregating in bone marrow, causes genotoxic effects, and thus reduces the repair ability of cells. The present study was conducted as an in vitro evaluation of age effects on the cytotoxicity induced by doxorubicin in mesenchymal stem cells (MSCs).    Methods: The MSCs of female BALB/c mice aged 1, 8, and 16 months were separated, characterized, and subse...

2016
Yi-Chan Peng En-Cheng Yang

The dramatic loss of honey bees is a major concern worldwide. Previous studies have indicated that neonicotinoid insecticides cause behavioural abnormalities and have proven that exposure to sublethal doses of imidacloprid during the larval stage decreases the olfactory learning ability of adults. The present study shows the effect of sublethal doses of imidacloprid on the neural development of...

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