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Effects of infected insects on secondary invasion of steinernematid entomopathogenic nematodes
Year:
1997
Source of publication :
Parasitology
Authors :
Glazer, Itamar
;
.
Volume :
114
Co-Authors:
Glazer, I., Department of Nematology, ARO, Volcani Center, Bet Dagan, 50250, Israel
Facilitators :
From page:
597
To page:
604
(
Total pages:
8
)
Abstract:
Factors affecting 'invasion efficiency' of steinernematid entomopathogenic nematodes into hosts were elucidated. The phenomenon that only part (10-40%) of the nematode population invades the target host has been recorded in many studies. It has been mainly ascribed to differences in the ability of individual nematodes to infect. In the present study the effect of an infected host, the wax moth Galleria mellonella, on subsequent infection of the entomopathogenic nematodes Steinernema carpocapsae Mexican, S. riobravus and S. feltiae was evaluated. The invasion rate of the 3 nematode species to a non-infected host was reduced by 40-60% after pre-exposure to infected hosts. These nematodes regained their full invasion potential after they were rinsed with water. Invasion into insects which were previously injected with nematodes was significantly reduced by 60-80% 6-9 h after injection. The reduction in subsequent invasion due to the initial infection was nematode species specific. This phenomenon was also observed with other lepidopteran pests (Helicoverpa armigera and Spadoptera littoralis). The data indicate that the initial infection by entomopathogenic nematodes induced the release of a substance which reduced the subsequent invasion. The chemical and biological characteristics of this substance are currently under investigation.
Note:
Related Files :
animal experiment
Animals
Biochemistry
Entomopathogenic nematodes
Invasion inhibitory substance
Moths
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:

Itamar's own PDF.

ID:
28413
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:39
Scientific Publication
Effects of infected insects on secondary invasion of steinernematid entomopathogenic nematodes
114
Glazer, I., Department of Nematology, ARO, Volcani Center, Bet Dagan, 50250, Israel
Effects of infected insects on secondary invasion of steinernematid entomopathogenic nematodes
Factors affecting 'invasion efficiency' of steinernematid entomopathogenic nematodes into hosts were elucidated. The phenomenon that only part (10-40%) of the nematode population invades the target host has been recorded in many studies. It has been mainly ascribed to differences in the ability of individual nematodes to infect. In the present study the effect of an infected host, the wax moth Galleria mellonella, on subsequent infection of the entomopathogenic nematodes Steinernema carpocapsae Mexican, S. riobravus and S. feltiae was evaluated. The invasion rate of the 3 nematode species to a non-infected host was reduced by 40-60% after pre-exposure to infected hosts. These nematodes regained their full invasion potential after they were rinsed with water. Invasion into insects which were previously injected with nematodes was significantly reduced by 60-80% 6-9 h after injection. The reduction in subsequent invasion due to the initial infection was nematode species specific. This phenomenon was also observed with other lepidopteran pests (Helicoverpa armigera and Spadoptera littoralis). The data indicate that the initial infection by entomopathogenic nematodes induced the release of a substance which reduced the subsequent invasion. The chemical and biological characteristics of this substance are currently under investigation.
Scientific Publication
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