Sample A: Cover Page of Thesis, Project, or Dissertation Proposal

4.2 VIRGINIA MOSQUITO SURVEILLANCE STATISTICS
Statistical analyses of RVF competent vector mosquito surveillance data gathered by
mosquito control districts in Virginia revealed that a total of 1,168,131 competent vector
mosquitoes were collected in 110,772 trap nights from 2,101 different trap locations over the
period of 2000-2006. 2 The monthly mean mosquito index i was 15.63. There were a total of
29,766 competent vector records ii available for analyses in this study. Figure 4.1 is a map
showing the location of the mosquito surveillance traps sites in Virginia from which the
mosquito population data used in this study was collected.
Figure 4.1. Location of the mosquito surveillance traps sites in Virginia from which the
mosquito population data used in this study was collected. Trap sites are shown on an
elevation map.
2
Including all mosquito surveillance data gathered by mosquito control districts, from 2000-2006 a total of
2,788,036 mosquitoes were trapped over 239,252 trap nights. The mean number of female mosquitoes
trapped per site per month was 15.32.
3
The monthly mean mosquito index was calculated as the natural logarithm of the mean number of female
mosquitoes trapped per site per month, multiplied by 10.
4
A record is the monthly mean number of mosquitoes of a competent vector species trapped at a given site.
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