Abstract Hyalesthes obsoletus Signoret (Hemiptera: Auchenorrhyncha: Cixiidae) is a univoltine, polyphagous planthopper that completes its life cycle, including the subterranean nymph cryptic stage, on herbaceous weeds. In vineyards, it can transmit ‘ Candidatus Phytoplasma solani’, an obligate parasitic bacterium associated with bois noir (BN) disease of grapevine, from host plants to grapevine...

Abstract Background Entomopathogenic nematodes (EPNs) have the potential to supersede larvicidal activity for management of various insect pests. Result Lab experiments were conducted test pathogenicity 2 EPNs local species; Steinernema feltiae and Heterorhabditis bacteriophora at different (IJs/cm ) concentrations against cabbage butterfly, Pieris brassicae (L.). The native isolate was obtaine...

One of the pest organisms reducing potato production is Colorado Potato Beetle [Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomalidae)] (CPB). CPB a polyphagous that damages every-stage potato. Although entomopathogenic nematodes (EPNs) in world have been demonstrated by many laboratories and field/garden studies activity against harmful groups, very few conducted on our country (Türkiye)....

Infective juveniles (J3) of the entomogenous nematodes Steinernema feltiae DD-136 (ca. 10,000 J3/100 ml) and S. glaseri (ca. 2,500 J3/100 ml) were incubated in steam-sterilized and nonsterilized sandy soil and bark compost for 8 weeks at 25 C. The nematodes were recovered by a two-step extraction procedure at 1-week intervals, and their infectivity to lepidopterous larvae (Spodoptera litura and...

The Diaprepes root weevil, Diaprepes abbreviatus (L.) is the most severe weevil pest in Florida citrus. Entomopathogenic nematodes have effectively suppressed larval populations of D. abbreviatus. Our objective was to conduct a broad laboratory comparison of entomopathogenic nematodes for virulence toward larvae of D. abbreviatus. The study was conducted at three temperatures (20, 24, and 29 de...

Third and fourth instar larvae of Aedes aegypti actively ingested entomopathogenic nematodes (EPNs) their symbiotic bacteria, resulting in larval mortality. All six EPN species evaluated this study were pathogenic to Ae. but varied significantly virulence. Heterorhabditis bacteriophora Steinernema carpocapsae most virulent, H. megidis S. kraussei showed the least virulence, whereas downesi felt...

We report the isolation of a bacterium from Galleria mellonella larva and its identification using genome sequencing and phylogenomic analysis. This bacterium was named Alcaligenes faecalis strain MOR02. Microscopic analyses revealed that the bacteria are located in the esophagus and intestine of the nematodes Steinernema feltiae, S. carpocapsae, and H. bacteriophora. Using G. mellonella larvae...

During a survey of entomopathogenic nematodes (EPNs) in the eastern Black Sea region of Turkey in 2009-2012, a steinernematid species was recorded and isolated using the Galleria-baiting method. The isolate was identified as Steinernema kraussei based on its morphological and molecular properties. The analysis of the ITS rDNA sequence placed the Turkish population of S. kraussei in the "feltiae...

The infective juveniles (IJs) of entomopathogenic nematodes (EPNs) seek out host insects and release their symbiotic bacteria into their body cavity causing septicaemia, which eventually leads to host death. The interaction between EPNs and their hosts are only partially understood, in particular the host immune responses appears to involve pathways other than phagocytosis and the canonical tra...