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DOI: | 10.1006/jipa.1993.1030 |
Web URL(s): | http://www.sciencedirect.com/science/article/pii/S002220118371030X Last checked: 12/15/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Thurston, Graham, S.;
Kaya, Harry K.;
Burlando, T. M.;
Harrison, R. E. |
Author Affiliation: | Thurston, Kaya, and Burlando: Department of Nematology, University of California, Davis, California; Harrison: Cooperative Agricultural Research Program, Tennessee State University, Nashville, Tennessee |
Title: | Milky disease bacterium as a stressor to increase susceptibility of Scarabaeid larvae to an entomopathogenic nematode |
Source: | Journal of Invertebrate Pathology. Vol. 61, No. 2, March 1993, p. 167-172. |
Publishing Information: | San Diego: Academic Press |
# of Pages: | 6 |
Keywords: | TIC Keywords: Biological control organisms; Biological pest control; Comparisons; Control methods; Cyclocephala hirta; Entomopathogenic nematodes; Heterorhabditis bacteriophora; In vitro; Infectivity; Milky disease; Paenibacillus popilliae; Pest control; Progeny testing; Scarabaeidae
|
Abstract/Contents: | "Mortality of Cyclocephala hirta by the entomopathogenic nematode Heterorhabditis bacteriophora was enhanced in grubs infected with the milky disease bacterium, Bacillus popilliae (Bp). In concentration-response assays with the nematode, LC50 values and 95% fiducial limits were 4.0 (<0.1, 14.6) infective juveniles per grub for Bp-infected insects and 47.7 (32.0, 64.7) for non-Bp-infected insects. The increased mortality of Bp-infected insects was partially attributed to rapid penetration of H. bacteriophora through the midgut wall. In in vitro assays with ligated midguts, the time required for H. bacteriophora to penetrate the midgut wall of Bp-infected grubs was 0.6 ± 0.1 hr, whereas the time required in non-Bp-infected grubs was 1.3 ± 0.1 hr. Total nematode progeny production per milligram grub tissue did not differ significantly between Bp-infected and non-Bp-infected grubs. However, the proportion of progeny remaining trapped in the non-Bp-infected cadavers at the end of the assay was greater than the proportion remaining in Bp-infected cadavers (0.52 ± 0.04 vs 0.13 ± 0.05, respectively). These data indicate that coexistence of these two pathogens within a host can occur and that B. popilliae could be used as a stressor on C. hirta to increase its susceptibility to H. bacteriophora." |
Language: | English |
References: | 25 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Thurston, G. S., H. K. Kaya, T. M. Burlando, and R. E. Harrison. 1993. Milky disease bacterium as a stressor to increase susceptibility of Scarabaeid larvae to an entomopathogenic nematode. J. Invertebr. Pathol. 61(2):p. 167-172. |
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| DOI: 10.1006/jipa.1993.1030 |
| Web URL(s): http://www.sciencedirect.com/science/article/pii/S002220118371030X Last checked: 12/15/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b4889219 |
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