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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Effect of soil texture and moisture on the activity of entomopathogenic nematodes against female Boophilus annulatus ticks
Year:
2006
Source of publication :
BioControl
Authors :
גלזר, איתמר
;
.
Volume :
51
Co-Authors:
Alekseev, E., Kimron Veterinary Institute, PO Box 1250250, Bet Dagan, Israel
Glazer, I., Department of Entomology, Nematology Division, Volcani Center, 50250, Bet Dagan, Israel
Samish, M., Kimron Veterinary Institute, PO Box 1250250, Bet Dagan, Israel
Facilitators :
From page:
507
To page:
518
(
Total pages:
12
)
Abstract:
Soil texture, chemistry and moisture have a profound effect upon the activity and persistence of entomopathogenic nematodes (EPNs). Whereas nematodes' natural habitat is within the soil, ticks and other arthropod pests prefer to stay on the soil surface and under stones or leaf litter; they spend much of their life cycle in the humid environment of the soil upper layer, therefore consideration of the effect of the soil environment on nematode activity is a pre-requisite for the sucessful use of EPNs against arthropod pests. In the present study we investigated the effects of soil type, and humidity on various nematode strains and on their effectiveness against ticks. Many infective juveniles (IJs) of Steinernema carpocapsae and S. riobrave were found in the uppermost soil layer whereas the heterorhabditid strains were almost absent from the upper 6 cm of the soil profile. The IJs of S. feltiae, and the S. carpocapsae strain S-20, exhibited an intermediate behavior. It was found that the activity of IJs of S. carpocapsae in the soil upper layer (1 cm depth) was strongly affected by soil type: the greatest number of IJs were recorded from sandy loam soil; less were found in the lighter soils - 'Marine sand' and 'Calcareous sandstone' - and only very few were recovered from heavy soils. Strikingly, even when the soil moisture was low and the number of nematodes found in the upper layer correspondingly low, tick mortality remained high. The results demonstrate: (a) the possible use of the nematodes as an anti-tick agent; (b) the importance of knowing the exact interaction of nematodes with the immediate environment of the pest, in order to optimize the pest-control activity of the nematode. © IOBC 2006.
Note:
Related Files :
Acari
BioControl
Entomopathogenic nematodes
Nematoda
soil chemistry
soil moisture
ticks
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/s10526-005-2935-9
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:

Itamar's own PDF.

ID:
23722
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:02
You may also be interested in
Scientific Publication
Effect of soil texture and moisture on the activity of entomopathogenic nematodes against female Boophilus annulatus ticks
51
Alekseev, E., Kimron Veterinary Institute, PO Box 1250250, Bet Dagan, Israel
Glazer, I., Department of Entomology, Nematology Division, Volcani Center, 50250, Bet Dagan, Israel
Samish, M., Kimron Veterinary Institute, PO Box 1250250, Bet Dagan, Israel
Effect of soil texture and moisture on the activity of entomopathogenic nematodes against female Boophilus annulatus ticks
Soil texture, chemistry and moisture have a profound effect upon the activity and persistence of entomopathogenic nematodes (EPNs). Whereas nematodes' natural habitat is within the soil, ticks and other arthropod pests prefer to stay on the soil surface and under stones or leaf litter; they spend much of their life cycle in the humid environment of the soil upper layer, therefore consideration of the effect of the soil environment on nematode activity is a pre-requisite for the sucessful use of EPNs against arthropod pests. In the present study we investigated the effects of soil type, and humidity on various nematode strains and on their effectiveness against ticks. Many infective juveniles (IJs) of Steinernema carpocapsae and S. riobrave were found in the uppermost soil layer whereas the heterorhabditid strains were almost absent from the upper 6 cm of the soil profile. The IJs of S. feltiae, and the S. carpocapsae strain S-20, exhibited an intermediate behavior. It was found that the activity of IJs of S. carpocapsae in the soil upper layer (1 cm depth) was strongly affected by soil type: the greatest number of IJs were recorded from sandy loam soil; less were found in the lighter soils - 'Marine sand' and 'Calcareous sandstone' - and only very few were recovered from heavy soils. Strikingly, even when the soil moisture was low and the number of nematodes found in the upper layer correspondingly low, tick mortality remained high. The results demonstrate: (a) the possible use of the nematodes as an anti-tick agent; (b) the importance of knowing the exact interaction of nematodes with the immediate environment of the pest, in order to optimize the pest-control activity of the nematode. © IOBC 2006.
Scientific Publication
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