beauveria bassiana (balsamo) vuillemin is an important natural regulator of insect populations. identification of a suitable molecular marker for detecting a virulent phenotype on a target pest would be useful in screening for effective isolates against the pest. nine isolates of b. bassiana were tested for their virulence to adults of tribolium castaneum (herbst) in laboratory bioassay with 1×...

the western flower thrips frankliniella occidentalis, an important greenhouse pest, has acquired rapid resistance to the chemical pesticides. therefore, biological control is worth consideration as an alternative control method. among the biological control agents, entomopathogenic fungi showed to be quite successful in some occasions. in this study, three iranian isolates of metarhizium anisop...

background: the aim of this study was to apply the nested-pcr and bioassay methods in detection and genotyping of toxoplasma gondii infection in provided sheep aborted fetus samples from qazvin province of iran. methods : eighteen sheep aborted fetal samples were studied by nested-pcr-rflp, histopathologi­cal observation and microbiological assay. bioassay in mice was carried out by inoculating...

background: the problem of the environmental pollution by nanoparticles, which have recently entered the cycle of industries process in iran, is very important and can be prevented with applying the proper management approaches. one of the most practical compounds is zno nanoparticle. in the present study  the (lethal concentration-50) lc50 24hr and 48hr of zno nanoparticles exposed-to reactive...

The glycosaminoglycan heparan sulphate (HS) has a heterogeneous structure; evidence shows that specific structures may be responsible for specific functions in biological processes such as blood coagulation and regulation of growth factor signalling. This review summarises the different experimental tools and methods developed to provide more rapid methods for studying the structure and functio...

Larvae of the marine gastropod Crepidula fornicata must complete a transition from the plankton, where they are highly dispersed, to an aggregated group of benthic adults. Previous research has shown that selective settlement of larvae on conspecific adults is mediated by a water-borne chemical cue. However, variable experimental conditions have been used to study this cue, and standardization ...

Harmful algal bloom (HAB) dinoflagellate species Karlodinium veneficum and Prorocentrum cordatum (prev. P. minimum) are commonly found in Chesapeake Bay during the late spring early summer months, coinciding with spawning season of eastern oyster (Crassostrea virginica). Unexplained larval mortalities at regional commercial hatcheries prompted screening hatchery water samples for these HAB spec...

Cephamycin C is a β-lactam antibiotic used as a raw material in several commercial antibiotics. The production and purification process of this antibiotic requires a fast, simple and accurate method to quantify it. In this paper, it was developed a high-performance liquid chromatography method to determine cephamycin C concentration, in order to offer an option for the traditional, but laboriou...

Phyllanthus watsonii Airy Shaw is an endemic plant found in Peninsular Malaysia. Although there are numerous reports on the anti cancer properties of other Phyllanthus species, published information on the cytotoxicity of P. watsonii are very limited. The present study was carried out with bioassay-guided fractionation approach to evaluate the cytotoxicity and apoptosis induction capability of ...