| comparative analysis of xenorhabdus koppenhoeferi gene expression during symbiotic persistence in the host nematode. | species of xenorhabdus and photorhabdus bacteria form mutualistic associations with steinernema and heterorhabditis nematodes, respectively and serve as model systems for studying microbe-animal symbioses. here, we profiled gene expression of xenorhabdus koppenhoeferi during their symbiotic persistence in the newly formed infective juveniles of the host nematode steinernema scarabaei through the selective capture of transcribed sequences (scots). the obtained gene expression profile was then com ... | 2016 | 26745883 |
| variation in the laboratory susceptibility of turf-infesting white grubs (coleoptera: scarabaeidae) to biological, biorational and chemical control products. | white grubs are the most widespread and damaging pests in turfgrass habitats of the northeast usa, and their management is highly dependent on chemical pesticides. because this complex includes at least eight species, opportunities for pest management would be enhanced by understanding how susceptibility to control products varies across taxa. the objective of this laboratory study was to measure variation in the susceptibility of four species to 18 biological, biorational and chemical insectici ... | 2010 | 19742452 |
| entomopathogenic nematodes for control of insect pests above and below ground with comments on commercial production. | entomopathogenic nematodes (epns) have been utilized in classical, conservation, and augmentative biological control programs. the vast majority of applied research has focused on their potential as inundatively applied augmentative biological control agents. extensive research over the past three decades has demonstrated both their successes and failures for control of insect pests of crops, ornamental plants, trees and lawn and turf. in this paper we present highlights of their development for ... | 2012 | 23482993 |
| relationship between the successful infection by entomopathogenic nematodes and the host immune response. | reproduction of entomopathogenic nematodes requires that they escape recognition by a host's immune system or that they have mechanisms to escape encapsulation and melanization. we investigated the immune responses of larvae for the greater wax moth (galleria mellonella), tobacco hornworm (manduca sexta), japanese beetle (popillia japonica), northern masked chafer (cyclocephala borealis), oriental beetle (exomala orientalis) and adult house crickets (acheta domesticus), challenged with infective ... | 2007 | 17275827 |
| effect of soil type on infectivity and persistence of the entomopathogenic nematodes steinernema scarabaei, steinernema glaseri, heterorhabditis zealandica, and heterorhabditis bacteriophora. | we tested the effect of soil type on the performance of the entomopathogenic pathogenic nematodes steinernema scarabaei, steinernema glaseri, heterorhabditis zealandica, and heterorhabditis bacteriophora. soil types used were loamy sand, sandy loam, loam, silt loam, clay loam, acidic sand, and a highly organic potting mix. infectivity was tested by exposing third-instar anomala orientalis or popillia japonica to nematodes in laboratory and greenhouse experiments and determining nematode establis ... | 2006 | 16563427 |
| attraction of four entomopathogenic nematodes to four white grub species. | to better understand the differences in the efficacy of entomopathogenic nematode species against white grub species, we are studying the various steps of the infection process of entomopathogenic nematodes into different white grub species using nematode species/strains with particular promise as white grub control agents. in this study we compared the attraction of the entomopathogenic nematodes steinernema scarabaei (amk001 strain), steinernema glaseri (nc1 strain), heterorhabditis zealandica ... | 2008 | 18597774 |
| effect of white grub developmental stage on susceptibility to entomopathogenic nematodes. | the pathogenicity of the entomopathogenic nematodes heterorhabditis bacteriophora poinar and steinernema scarabaei stock & koppenhöfer against different developmental stages of the japanese beetle, popillia japonica newman, and the oriental beetle, anomala (=exomala) orientalis waterhouse, were studied under laboratory conditions. the efficacy of s. scarabaei did not differ between second and third instars in p. japonica or a. orientalis or between small (young) and large (older) third instars i ... | 2004 | 15666735 |