نتایج جستجو برای: developmental time
تعداد نتایج: 1996514 فیلتر نتایج به سال:
the life history of enochrus quadripunctatus herbst was studied in the laboratory. the duration of each developmental stage, larval behavior, and preimaginal mortality rate were determined. it takes the insect a total of 43 days from hatching to reach the adult stage, with a high mortality rate in the first stadium. the mortality rate decreases as the beetle passes through the immature stages. ...
the common green lacewing is an important natural enemy used for pest control in greenhouses. it is also very common in many agricultural systems. hence, studying lethal and sublethal effects of insecticides on this predator would be useful. toxicity of endosulfan, imidacloprid and indoxacarb was assessed on 1st instar larvae of chrysoperla carnea (stephens) in laboratory. residual bioassays we...
beet armyworm (spodoptera exigua (hubner)) (lepidoptera: noctuidae) is the most economically important sugar beet (beta vulgaris) pest worldwide. the main control method of this pest is insecticides use. thus, it is important to develop alternative means of controlling this pest, including host plant resistance using plant lectins. in the current study, the effects of gna (galanthus nivalis agg...
the spider mite, t. turkestani, is considered as one of the most important polyphagous pests of many crops. its reproductive ability, developmental time, preimaginal mortality and reproduction rate were determined on kidney bean at 20, 25 and 30°c,70±5% rh and 16l:8d. female longevity and immature developmental period (6.74 and 5.8 days, respectively) were shorter at 30°c than at 20 and 25°c. t...
insect natural enemies selected for such specific traits as faster developmental times, longer survivor, increased fecundity, and larger body size might be considered during production of biological control agents in certain situations. for instance, traits related to developmental rates may be selected for, if genetically based variation exists within temperature-dependent responses. hippodami...
Introduction: Developmental changes in atrioventricular nodal conduction time and refractoriness have been shown in several studies. Prevalence of atrioventricular nodal reentrant tachycardia (AVNRT) is clearly age-dependent. The purpose of this study was to determine developmental changes of basic and frequency-dependent electrophysiological properties of the atrioventricular node (AV-node)...
how to cite this article: yaghini o, danesh f, mahmoudian t, beigi b. evaluation of developmental delay in infants who came in for 6th month vaccination in isfahan city health centers. iran j child neurol 2012;6(2): 29-32. objective developmental delay is one of the most common causes of conferring the pediatric neurologist. the main part of neurological growth and development occur in the fi...
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