xenorhabdus and photorhabdus are members of the family enterobacteriaceae, and are engaged in a mutualistic association with the entomopathogenic nematodes, steinernema and heterorhabditis, respectively. in the present study, the organic fraction of ethyl acetate bacterial crude extracts of the symbiotic bacteria, xenorhabdus stockiae and photorhabdus luminescens isolated from entomopathogenic ...

The entomogenous nematodes Heterorhabditis bacteriophora Poinar and H. heliothidis (Khan, Brooks, and Hirschmann) and their associated bacterium Xenorhabdus luminescens (Poinar and Thomas) have been tested against a humher of insect pests with some encouraging results (11). Simons (14) obtained 90% control of tile black vine weevil, Otiorhynchus sulcatus Fab., after applying Heterorhabditis sp....

Entomopathogenic nematodes are generally considered beneficial organisms. However, they can affect beneficial insects such as parasitoids. The interaction between the entomopathogenic nematodes Heterorhabditis bacteriophora Poinar (Rhabditida: Heterorhabditidae) and Steinernema carpocapsae Weiser, and the parasitoid Microplitis rufiventris Kokujev (Hymenoptera: Braconidae) was investigated in t...

habditid nematodes of the Steinernematidae and Heterorhabditidae family are lethal to a broad range of economically important insect pests (Journey and Ostlie, 2000). Entomopathogenic nematodes (EPN) are often applied to sites and ecosystems that routinely receive other inputs that may interact with nematodes, including chemical pesticides, fertilizers, and soil amendments (De Nardo and Grewal,...

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...

Oriental fruit moth Grapholita molesta (Busck, 1916) (Lepidoptera: Tortricidae) is considered a major pest in temperate fruit trees, such as peach and apple. Entomopathogenic nematodes (EPNs) are regarded as viable for pest management control due to their efficiency against tortricid in these trees. The objective of this study was to evaluate the effectiveness of native EPNs from Rio Grande do ...