Current Search: Paulson, Sally L. (x)
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(1 - 4 of 4)
- Title
- Effects of LaCrosse virus infection on Aedes triseriatus: A gravimetric analysis of engorgement and an evaluation of host seeking behavior.
- Creator
- Appelbaum, Carolyn., Florida Atlantic University, Paulson, Sally L.
- Abstract/Description
-
Aedes triseriatus females were parenterally inoculated with LaCrosse virus and the relationship of wing length to body weight after bloodfeeding was analyzed. An olfactometer was used to evaluate the host seeking ability of infected mosquitoes. A decrease in the slope of the normal linear relationship between wing length and body weight after bloodfeeding was found in the three infected groups. A significantly greater number of virus infected mosquitoes failed to engorge on an available...
Show moreAedes triseriatus females were parenterally inoculated with LaCrosse virus and the relationship of wing length to body weight after bloodfeeding was analyzed. An olfactometer was used to evaluate the host seeking ability of infected mosquitoes. A decrease in the slope of the normal linear relationship between wing length and body weight after bloodfeeding was found in the three infected groups. A significantly greater number of virus infected mosquitoes failed to engorge on an available vertebrate when compared with controls. No significant difference was found in host seeking ability between infected and control groups when tested in the olfactometer.
Show less - Date Issued
- 1992
- PURL
- http://purl.flvc.org/fcla/dt/14839
- Subject Headings
- Insects--Virus diseases, Aedes, Mosquitoes
- Format
- Document (PDF)
- Title
- Reproductive isolation between Florida strains of Aedes aegypti and Aedes albopictus.
- Creator
- Harper, Jeffery Patrick, Florida Atlantic University, Paulson, Sally L.
- Abstract/Description
-
The recent introduction of Aedes albopictus and decline in Aedes aegypti suggests competitive displacement. I report the dynamics of hetero- and conspecific mating between Florida strains of these species. Dissection of the spermathecae showed that heterospecific insemination was an infrequent event for both species combination (10.7% for Aedes albopictus with Aedes aegypti males, 3.7% for the reciprocal cross). This even occurred when the rear tarsi of females were removed, eliminating a...
Show moreThe recent introduction of Aedes albopictus and decline in Aedes aegypti suggests competitive displacement. I report the dynamics of hetero- and conspecific mating between Florida strains of these species. Dissection of the spermathecae showed that heterospecific insemination was an infrequent event for both species combination (10.7% for Aedes albopictus with Aedes aegypti males, 3.7% for the reciprocal cross). This even occurred when the rear tarsi of females were removed, eliminating a significant mechanism for fending off unwanted courtship. When heterospecific mating does occur the resulting eggs are nonviable. When held with males of both species, females mated with conspecifics and oviposited without regard to the presence of heterospecifics. In low density experiments, a single female of either species was caged with an excess of heterospecific males, the conspecific male always located and inseminated the female. My results suggest that significant prezygotic and postzygotic reproductive isolation exists between Ae. aegypti and Ae. albopictus.
Show less - Date Issued
- 1993
- PURL
- http://purl.flvc.org/fcla/dt/14895
- Subject Headings
- Mosquitoes--Florida, Aedes aegypti--Reproduction, Aedes albopictus--Reproduction
- Format
- Document (PDF)
- Title
- Infestation of Opuntia by the phycitid moths Melitara prodenialis and Cactoblastis cactorum.
- Creator
- Pierce, Rebecca Lynn., Florida Atlantic University, Paulson, Sally L.
- Abstract/Description
-
Cactoblastis cactorum has been used as a biological control for prickly pear cactus, especially Opuntia stricta. Since its introduction to several Caribbean islands in the late 1950's, the moth has spread naturally through the region and now poses a threat to the Opuntia populations in Florida and Texas. A study in the Nature Preserve of FAU from June to August, 1993, revealed that 96% of the prickly pear was O. stricta with Opuntia compressa comprising the remaining four percent. The...
Show moreCactoblastis cactorum has been used as a biological control for prickly pear cactus, especially Opuntia stricta. Since its introduction to several Caribbean islands in the late 1950's, the moth has spread naturally through the region and now poses a threat to the Opuntia populations in Florida and Texas. A study in the Nature Preserve of FAU from June to August, 1993, revealed that 96% of the prickly pear was O. stricta with Opuntia compressa comprising the remaining four percent. The infestation rate of O. stricta by the native moth borer Melitara prodenialis was significantly higher than by C. cactorum (75% versus 54%). Rate of infestation by either species of moth was positively correlated with plant size. M. prodenialis significantly preferred tertiary pads over primary growth. In contrast, C. cactorum did not show a significant preference for primary, secondary or tertiary pads. Coinfestation rates of individual pads was significantly lower than for the total plant (5% versus 25%).
Show less - Date Issued
- 1995
- PURL
- http://purl.flvc.org/fcla/dt/15195
- Subject Headings
- Prickly pears--Biological control, Moths
- Format
- Document (PDF)
- Title
- Surveillance of Culex nigripalpus populations in Palm Beach County, Florida.
- Creator
- Downing, Mary Lou Morales., Florida Atlantic University, Paulson, Sally L.
- Abstract/Description
-
Populations of resting Culex nigripalpus were monitored with a ground aspirator weekly at four different sites in Palm Beach County, Florida from April, 1991, through March, 1992. There was no difference found in rainfall abundance or in temperature at the four sites, however mosquito production was significantly different. Baseline data of the population was established and two sites produced high numbers of Cx. nigripalpus. One of these two sites acted like an island for resting mosquitoes,...
Show morePopulations of resting Culex nigripalpus were monitored with a ground aspirator weekly at four different sites in Palm Beach County, Florida from April, 1991, through March, 1992. There was no difference found in rainfall abundance or in temperature at the four sites, however mosquito production was significantly different. Baseline data of the population was established and two sites produced high numbers of Cx. nigripalpus. One of these two sites acted like an island for resting mosquitoes, attracting them from surrounding areas; the other site had continuous standing water and constant mosquito numbers. Environmental parameters on population density and structure were also examined at the two sites. Only one of the sites showed correlation with rainfall in population density and structure. Both sites were identified for use in future St. Louis Encephalitis surveillance programs.
Show less - Date Issued
- 1994
- PURL
- http://purl.flvc.org/fcla/dt/15002
- Subject Headings
- Culex--Florida--Palm Beach County, Mosquitoes as carriers of disease, Mosquitoes--Florida--Palm Beach County, Saint Louis encephalitis--Florida--Palm Beach County
- Format
- Document (PDF)
