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| DOI: | 10.1006/bcon.2001.1013 |
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| Web URL(s): | http://pdn.sciencedirect.com/science?_ob=MiamiImageURL&_cid=272466&_user=1111158&_pii=S1049964401910138&_check=y&_origin=article&_zone=toolbar&_coverDate=31-Mar-2002&view=c&originContentFamily=serial&wchp=dGLzVlk-zSkWA&md5=78503f3513e3ec079b04ccc5c77214ee/1-s2.0-S1049964401910138-main.pdf
Last checked: 01/16/2012
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| Publication Type:
| Refereed |
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| Author(s): | Somasekhar, Nethi;
Grewal, Parwinder S.;
Klein, Michael G. |
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| Author Affiliation: | Somasekhar and Grewal: Department of Entomology, Ohio State University, Wooster, Ohio; Klein: United States Department of Agriculture, Agricultural Research Science, Horticultural Insects Research Laboratory, Wooster, Ohio |
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| Title: | Genetic variability in stress tolerance and fitness among natural populations of Steinernema carpocapsae |
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| Source: | Biological Control: Theory and Application in Pest Management. Vol. 23, No. 3, March 2002, p. 303-310. |
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| Publishing Information: | San Diego: Academic Press |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Genetic variability; Steinernema carpocapsae; Heat resistance; Virulence; Comparisons; Breeding improvement; Oxygen deprivation; Population dynamics; Entomopathogenic nematodes; Stress response
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| Abstract/Contents: | "Genetic variability in stress tolerance (heat, desiccation, and hypoxia) and fitness (virulence and reproduction potential) among natural populations of Steinerema carpocapsae was assessed by estimating phenotypic differences. Significant differences were observed in stress tolerance among populations. Populations isolated from North Carolina showed significantly more stress tolerance than those isolated from Ohio. Significant differences were also observed in populations isolated from the same locality. Survival of infective juveniles after exposure to 40°C for 2 h ranged from 37 to 82%. A threefold difference was observed in infective juvenile survival following exposure to osmotic desiccation or hypoxic condition. Several populations tested were superior to the most widely used strain (`All' strain) in stress tolerance traits, with one population KMD33, being superior to the `All' strain in all traits. Fitness as expressed by virulence and reproductive potential differed significantly among populations but showed less variability than the stress tolerance traits. All populations tested had a reproductive potential greater than or similar to that of the `All' strain and most of them caused >60% insect mortality of the wax moth larvae, Galleria mellonella. The high genetic variability in stress tolerance among natural populations suggests the feasibility of using selection for genetic improvement of these traits." |
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| Language: | English |
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| References: | 37 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Somasekhar, N., P. S. Grewal, and M. G. Klein. 2002. Genetic variability in stress tolerance and fitness among natural populations of Steinernema carpocapsae. Biol. Control: Theory Appl. Pest Manage. 23(3):p. 303-310. |
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| DOI: 10.1006/bcon.2001.1013 |
| Web URL(s):
http://pdn.sciencedirect.com/science?_ob=MiamiImageURL&_cid=272466&_user=1111158&_pii=S1049964401910138&_check=y&_origin=article&_zone=toolbar&_coverDate=31-Mar-2002&view=c&originContentFamily=serial&wchp=dGLzVlk-zSkWA&md5=78503f3513e3ec079b04ccc5c77214ee/1-s2.0-S1049964401910138-main.pdf
Last checked: 01/16/2012
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 925 .B5 |
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