The citrus mealybug, Planococcus citri, is a highly destructive pest of citrus, occurring only in the aerial parts of plants. Humidity will be one of the key factors to consider when using entomopathogenic nematodes (EPN) as biological control agents. Different adjuvants can be added to suspensions of EPNs, to improve control as a foliar application. An aqueous suspension containing Heterorhabd...

Predators and parasites can control the abundance or biomass of herbivores with indirect effects on producer communities and ecosystems, but the interplay of multiple natural enemies may yield unexpected dynamics. We experimentally examined interactions between two microparasites (entomopathogenic nematodes) isolated from sandy grassland soils of coastal California: Heterorhabditis marelatus (H...

We exposed honey bee workers and brood to four entomopathogenic nematode species under conditions normally encountered in the hive by spraying nematodes onto combs. Mortality of adult bees exposed to any of the nematode species was less than 10%, and there was no evidence of nematode infection when dead adults were dissected. To assess the impact of nematodes on brood, we used smaller-size hone...

Different species and strains of pathogens and predators differ in their effectiveness as biological control agents of insects. These differences have been well documented for predatory insects, parasitoids, and a number of entomopathogens (9). The importance of such interspecific and intraspecific variation has been recognized and demonstrated for insect-parasitic steinernematids and heterorha...

In a survey of entomopathogenic nematodes in Brazil, a nematode isolate of the genus Heterorhabditis was found. The nematode was collected from soil by the insect-baiting technique and maintained in the laboratory on last instar Galleria mellonella (L.) larvae. Morphological and molecular studies of the isolate showed that the nematode is a new species. Light and scanning electron microscopy, D...

entomoparasitic nematodes (epn) are among the very important pest control agents. among the related groups within these nematodes, two families namely steinernematidae and heterorhabditidae are more important than the others. due to commercial application of these agents in pest control, extensive research has been carried out to identify the different species of these nematodes throughout the ...

For the first time during the survey of entomopathogenic nematodes in north of Iran, a geographical isolates of Heterorhabditis recovered from soil using Galleria baiting technique. Based on morphological and molecular characterization this isolates was identified as Heterorhabditis bacteriophora NIR1. Morphometric and morphological comparisons of the new isolate with type species and other des...