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| Web URL(s): | http://www.sciencedirect.com/science/article/pii/S1049964496900481/pdf?md5=1e9fe94dbbfe51a9d258269b27563019&pid=1-s2.0-S1049964496900481-main.pdf
Last checked: 09/29/2015
Requires: PDF Reader
Access conditions: Item is within a limited access website |
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| Publication Type:
| Refereed |
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| Author(s): | Walker, T. J.;
Parkman, J. P.;
Frank, J. H.;
Schuster, D. J. |
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| Author Affiliation: | Walker, Parkman, Frank: Department of Entomology and Nematology, University of Florida, Gainesville, FL; and Schuster: University of Florida Gulf Coast Research and Education Center, Bradenton, FL |
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| Title: | Seasonality of Ormia depleta and limits to its spread |
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| Source: | Biological Control: Theory and Application in Pest Management. Vol. 6, No. 3, June 1996, p. 378-383. |
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| Publishing Information: | San Diego: Academic Press |
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| # of Pages: | 6 |
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| Related Web URL: | http://www.sciencedirect.com/science/article/pii/S1049964496900481
Last checked: 09/29/2015
Notes: Abstract only |
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| Keywords: | TIC Keywords: Biological control organisms; Geographical distribution; Mole crickets; Ormia depleta; Regional variation; Seasonal variation
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| Abstract/Contents: | "Ormia depleta (Wiedemann) (Diptera: Tachinidae), a South American fly that homes on the calling songs of its hosts, was brought from Piracicaba, Brazil; colonized; and released in Florida for the biological control of Scapteriscus spp. mole crickets. It became established at some release sites and rapidly spread through most of peninsular Florida. The seasonal distributions of phonotactic females in Florida differed from the single summer peak recorded at Rio Claro and Piracicaba, Brazil (23°S). Near Bradenton (27°N), spring and fall peaks with a summer hiatus were quickly established and remain evident. At two sites near Gainesville (30°N), a strong fall peak and a modest-to-none spring peak developed. Peaks of phonotactic females seem to follow times of peak host availability and sometimes coincide with minima of host availability. Limits to geographical expansion of O. depleta are poorly understood. At Gainesville, the site of earliest introduction, establishment was rapid and sound-trap catches increased for the first 3 years, exceeding 1000 per year at one site. Catches then declined for 3 years, almost reaching zero in 1994. On the other hand, annual sound-trap catches of O.depleta at Bradenton exceeded 1000 in <2 years and have remained above that level for 5 years. Winters in Gainesville are more severe than those in Bradenton, but minimum water temperatures in Gainesville were substantially lower during O. depleta's increase than during its decline. Perhaps mild winters cause the flies to become active early-only to starve for lack of adequate winter nectar sources. O. depleta may yet spread to the northern limits of its Scapteriscus hosts as present populations adapt to new environments. Or farther spread may require that new strains be introduced from more southerly sites in South America." |
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| Language: | English |
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| References: | 11 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Walker, T. J., J. P. Parkman, J. H. Frank, and D. J. Schuster. 1996. Seasonality of Ormia depleta and limits to its spread. Biol. Control: Theory Appl. Pest Manage. 6(3):p. 378-383. |
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| Web URL(s):
http://www.sciencedirect.com/science/article/pii/S1049964496900481/pdf?md5=1e9fe94dbbfe51a9d258269b27563019&pid=1-s2.0-S1049964496900481-main.pdf
Last checked: 09/29/2015
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Access conditions: Item is within a limited access website |
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MSU catalog number: SB 925 .B5 |
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