نتایج جستجو برای: entomopathogenic nematode

تعداد نتایج: 18024  

Journal: :The Journal of parasitology 1994
S L Gardner S P Stock H K Kaya

A new species of nematode of the genus Heterorhabditis (Nemata: Heterorhabditidae) was found during a survey of the soil entomopathogenic nematode fauna of the Hawaiian Islands. Heterorhabditis hawaiiensis sp. n. can be separated from all other species of Heterorhabditis by the length of the infective juvenile and the morphological characters of the spicules, gubernaculum, and bursa. Random amp...

2003
DAVID I. SHAPIRO-ILAN WAYNE A. GARDNER JAMES R. FUXA BRUCE W. WOOD KHUONG B. NGUYEN BYRON J. ADAMS RICHARD A. HUMBER MICHAEL J. HALL

Thepecanweevil,Curculio caryae (Horn), is amajor pest of pecans in the Southeastern United States. Entomopathogenic nematodes and fungi are potential alternatives to chemical insecticides for C. caryae control. Our objective was to survey pecan orchards in the southeastern United States for entomopathogenic nematodes and fungi and determine the virulence of the new isolates to C. caryae larvae....

Journal: :Parasitology 2007
J M Christen J F Campbell E E Lewis D I Shapiro-Ilan S B Ramaswamy

Potential hosts for infective juveniles of entomopathogenic nematodes can vary considerably in quality based on the characteristics of the host species/stage, physiological status (e.g. stress, feeding on toxins), and infection status (heterospecific or conspecific infection). In this study, we investigated responses of the entomopathogenic nematode Steinernema riobrave to hosts (Galleria mello...

2018
A. M. A. Meligy

Little is known about element contents in the entomopathogenic nematodes despite their vital role in the growth and development of all organisms. Ten element contents of seven nematode isolates were determined. No significant differences were observed in concentrations of aluminum (Al), chromium (Cr), and lead (Pb) among all the studied nematode isolates, while significant differences of cadmiu...

Journal: :Journal of economic entomology 2001
D I Shapiro-Ilan

The pecan weevil, Curculio caryae (Horn), is a key pest of pecans in the Southeast. Entomopathogenic nematodes have been shown to be pathogenic toward the larval stage of this pest. Before this research, only three species of nematodes had been tested against pecan weevil larvae. In this study, the virulence of the following nine species and 15 strains of nematodes toward fourth-instar pecan we...

Journal: :Journal of nematology 2006
David I Shapiro-Ilan Ted E Cottrell Ian Brown Wayne A Gardner Robert K Hubbard Bruce W Wood

Our overall goal was to investigate several aspects of pecan weevil, Curculio caryae, suppression with entomopathogenic nematodes. Specifically, our objectives were to: 1) determine optimum moisture levels for larval suppression, 2) determine suppression of adult C. caryae under field conditions, and 3) measure the effects of a surfactant on nematode efficacy. In the laboratory, virulence of He...

2012
Adler R. Dillman John M. Chaston Byron J. Adams Todd A. Ciche Heidi Goodrich-Blair S. Patricia Stock Paul W. Sternberg

1 Howard Hughes Medical Institute, Division of Biology, California Institute of Technology, Pasadena, California, United States of America, 2 Department of Entomology, Cornell University, Ithaca, New York, United States of America, 3 Department of Biology, and Evolutionary Ecology Laboratories, Brigham Young University, Provo, Utah, United States of America, 4 Department of Microbiology and Mol...

2010
Jared G. Ali Hans T. Alborn Lukasz L. Stelinski

1. Indirect plant defences are well documented for the above-ground constituents of plants. Although less investigated to date, below-ground defences that mediate multitrophic interactions are equally important. Entomopathogenic nematodes (Steinernema diaprepesi) are attracted to herbivore-induced volatiles from Swingle var. (Citrus paradisi · Poncirus trifoliata) when fed upon by root weevil,D...

Journal: :Journal of nematology 2012
David I Shapiro-Ilan Richou Han Claudia Dolinksi

Production and application technology is critical for the success of entomopathogenic nematodes (EPNs) in biological control. Production approaches include in vivo, and in vitro methods (solid or liquid fermentation). For laboratory use and small scale field experiments, in vivo production of EPNs appears to be the appropriate method. In vivo production is also appropriate for niche markets and...

Journal: :Biotechnology journal international 2022

Aims: Entomopathogenic nematode (EPN) and its symbiotic bacterium are used worldwide as microbial control agents. Toxins from EPN bacteria were isolated provided basis for using this potential resource biocontrol agent against vegetable diseases pests.
 Study Design: The toxins extracted 28 strains of associated with entomopathogenic nematodes. insecticidal activity antibiotic pests determ...

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