the biological parameters of sympiesis striatipes ashmead, one of the most abundant hymenopterous ectoparasitoid of phyllocnistis citrella stainton in ehime province of japan, were studied under laboratory and field conditions. the mean immature developmental time and adult longevity at different temperatures (22 to 31â°c), 50-70% rh and 12l: 12d photoperiod decreased as the temperature increas...

In the aftermath of the collapse of apartheid, critical intellectuals in South Africa have faced the prospect of redescribing the world in the absence of the political system which for decades had been the object of their critique. And this, in a context in which every doctrine of Modernism is on the defensive, if not on the floor. It is a daunting challenge, but it would require a powerful opt...

Network one-way transit time is one of the principal factors affecting network QoS. It is therefore important to measure it with sufficient accuracy. The measurements of network one-way transit time should not include host effects (time spent of the measurement hosts themselves) but be entirely attributable to delays incurred on the network. Furthermore, the measurements of network oneway trans...

Introduction Onchocerciasis, or ‘river-blindness’, is a disease caused by infection with the filarial worm, Onchocerca volvulus. The parasite is transmitted to human hosts by infected female ‘blackflies’, Simulium spp., as they feed on the host’s blood. Whilst feeding, the fly secretes saliva containing infective larvae. These larvae enter the host’s subcutaneous tissue, migrate, and form nodul...

Woody plants host diverse communities of associated organisms, including wood-inhabiting fungi. In this group, host effects on species richness and interaction network structure are not well understood, especially not at large geographical scales. We investigated ecological, historical and evolutionary determinants of fungal species richness and network modularity, that is, subcommunity structu...

Few aerobiological studies have focused on smut spores, teliospores of fungi within the order Ustilaginales, but the scientific literature provides evidence of the potential aerobiological significance of these plant pathogens. The atmosphere in Tulsa, Oklahoma was monitored for the presence of smut teliospores using a Burkard Volumetric Spore Trap. Smut spores were identified in the atmospheri...

rearing methods for bracon hebetor (say) (hym., braconidae) were investigated in the series of laboratory experiments designed to enhance the yield of the mass rearing of this parasitoid for biological control of lepidopteran field and stored product pests. in these experiments, the effects of parasitoid and host densities on fertility and sex ratio of b. hebetor were assessed. in parasitoid de...

one species of eulophidae, oomyzus sokolowskii (kurdjumov), was collected from larvae of the diamondback moth, plutella xylostella (l.) (lep.: plutellidae). this parasitoid is a major gregarious larval-pupal endoparasitoid of p. xylostella that prefers ovipositing into host larvae but depositing its eggs in host prepupae too. this is the first report of the occurrence of this species from iran.

Field surveys in Zagros forests located in western Iran were done to study some aspects of biology and host range of Biscogniauxia mediterranea during 2014-2016. The ability of its conidia and ascospores to cause the disease was evaluated under greenhouse condition. Ascospore viability and development of anamorph and teleomorph were surveyed under different conditions. The pathogen host range w...