Webb, Frederick J., Jr. (ed.) / Proceedings of the 13th Annual Conference on Wetlands Restoration and Creation, May 15-16, 1986
Murdoch, Carla W.
Mosquito control project in upper Tampa Bay Park Hillsborough County, Florida, pp. 145-147 ff. PDF (1.1 MB)
MOSQUITO CONTROL PROJECT IN UPPER TAMPA BAY PARK HILLSBOROUGH COUNTY, FLORIDA Carla W. Murdoch Pinellas County Mosquito Control 14845 49th Street North Clearwater, Florida 33520 INTRODUCTION Hillsborough County Mosquito and Aquatic Weed Control constructed a minnow reservoir in December of 1984 within a saltmarsh area of Upper Tampa Bay Park for the biological control of mosquitoes. Three months later, five shallow ditches (30" deep) were excavated with a rotary ditcher scattering the spoil over the saltmarsh, which connected the low grassy mosquito producing depressions to the minnow reservoir. The minnow reservoir, 75' in diameter, 3' deep, maintains permanent water and supports several species of top feeding minnows that are predacious to mosquito larvae. The Department of Environmental Regulation issued their Dredge and Fill permit to Hillsborough County Mosquito and Aquatic Weed Control contingent on having several environmental perimeters monitored for three years. They are described as follows: mosquito production, vegetation, and water quality. MOSQUITO PRODUCTION SURVEY Prior to the construction of our Mosquito Source Reduction Project for the Southeast and South tidal areas of Upper Tampa Bay Park we devised a larval survey form which we use weekly, that began in August of 1984. With this form we labeled sampling stations for all the identified mosquito producing areas, noting the stage and species of larvae, #/dip, depth of water and presence of fish. The preconstruc- tion survey along with information obtained from seven years of aerial inspections indicated large broods of saltmarsh mosquitoes, Aedes taeniorhynchus and Aedes Sollicitans, being produced from within the project site. After construction of the minnow reservoir and radial ditches a significant decrease in mosquito production has been docu- mented. Also a change of dominant mosquito species has been noted during our "mosquito seasons" to a less vicious biting species, Anopheles Atropos. SALTMARSH VEGETATION SURVEY Mosquito Control's initial vegetation survey was conducted on February 21, 1985, before any ditches were dug with the rotary ditcher, within the study area established for the project site. This survey 145
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