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A novel method for long-term storage of the entomopathogenic nematode Steinernema feltiae at room temperature
Year:
2005
Source of publication :
biological control (source)
Authors :
גלזר, איתמר
;
.
צ'ן, סונגבי
;
.
Volume :
32
Co-Authors:
Chen, S., Department of Nematology, ARO, Volcani Ctr., Bet Dagan 50250, I., Israel
Glazer, I., Department of Nematology, ARO, Volcani Ctr., Bet Dagan 50250, I., Israel
Facilitators :
From page:
104
To page:
110
(
Total pages:
7
)
Abstract:
A novel method was developed for long-term storage of infective juveniles (IJs) of the entomopathogenic nematode (EPN) Steinernema feltiae IS-6 at 23 ± 0.3°C. A nematode suspension in distilled water containing 18% glycerol and 2% sodium alginate was dropped in 0.5% CaCO 3· 2H 2O, which formed calcium alginate granules. The granules were placed in 5-cm petri dishes and transferred into sealed 2.5-L desiccators under 100 or 85% relative humudity (RH), or sealed into plastic boxes in which a high RH was maintained by the presence of a piece of distilled water-soaked sponge. The experimental results showed that after storage for 6 months at 23°C, the survival rates of nematodes in the granules in the desiccator at 100% RH and in the plastic box were 99.8 ± 0.4 and 95.9 ± 4.3%, respectively. Under the same conditions, the survival rates of nematodes stored in distilled water and in granules without osmotic solution were 10.3 ± 1.9 and 14.7 ± 4.7%, respectively. EPNs stored in the desiccator at 85% RH were all dead after 4 months. The infectivity, as measured by insect mortality (100%) and invasion rate (23.5 ± 1.6%) of osmotically desiccated nematodes in granules that had been stored for 6 months in the desiccator at 100% RH was similar to that of freshly reared ones. In contrast, the invasion rates of nematodes stored in either distilled water or in granules without osmotic pressure were zero, and the invasion rate of the nematodes in granules stored in plastic boxes was 1.7 ± 0.2%. © 2004 Elsevier Inc. All rights reserved.
Note:
Related Files :
Alginate granules
Infective juveniles
Insecta
Nematoda
relative humidity
Steinernema
Steinernema feltiae
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.biocontrol.2004.08.006
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
24422
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:07
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Scientific Publication
A novel method for long-term storage of the entomopathogenic nematode Steinernema feltiae at room temperature
32
Chen, S., Department of Nematology, ARO, Volcani Ctr., Bet Dagan 50250, I., Israel
Glazer, I., Department of Nematology, ARO, Volcani Ctr., Bet Dagan 50250, I., Israel
A novel method for long-term storage of the entomopathogenic nematode Steinernema feltiae at room temperature
A novel method was developed for long-term storage of infective juveniles (IJs) of the entomopathogenic nematode (EPN) Steinernema feltiae IS-6 at 23 ± 0.3°C. A nematode suspension in distilled water containing 18% glycerol and 2% sodium alginate was dropped in 0.5% CaCO 3· 2H 2O, which formed calcium alginate granules. The granules were placed in 5-cm petri dishes and transferred into sealed 2.5-L desiccators under 100 or 85% relative humudity (RH), or sealed into plastic boxes in which a high RH was maintained by the presence of a piece of distilled water-soaked sponge. The experimental results showed that after storage for 6 months at 23°C, the survival rates of nematodes in the granules in the desiccator at 100% RH and in the plastic box were 99.8 ± 0.4 and 95.9 ± 4.3%, respectively. Under the same conditions, the survival rates of nematodes stored in distilled water and in granules without osmotic solution were 10.3 ± 1.9 and 14.7 ± 4.7%, respectively. EPNs stored in the desiccator at 85% RH were all dead after 4 months. The infectivity, as measured by insect mortality (100%) and invasion rate (23.5 ± 1.6%) of osmotically desiccated nematodes in granules that had been stored for 6 months in the desiccator at 100% RH was similar to that of freshly reared ones. In contrast, the invasion rates of nematodes stored in either distilled water or in granules without osmotic pressure were zero, and the invasion rate of the nematodes in granules stored in plastic boxes was 1.7 ± 0.2%. © 2004 Elsevier Inc. All rights reserved.
Scientific Publication
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