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

Table 4.4. Virginia competent vector mosquito surveillance statistics by month for 2000-
2006.
Month Records b #
Mosquitoes a
# Trap # Trap # Mosquitoes Mean # Abundance
Sites Nights per Trap Night Mosquitoes Index c
January 10 140 7 10 14.00 20.60 1.33
March 4 10 4 4 2.50 11.50 0.24
April 699 28236 219 1517 18.61 16.10 1.77
May 3215 191518 573 12298 15.57 15.34 1.48
June 5225 264894 856 20790 12.74 16.52 1.21
July 5454 263157 975 21068 12.49 16.74 1.18
August 5900 195629 1168 23052 8.49 15.79 0.80
September 5170 155406 965 20025 7.76 14.68 0.74
October 3392 56548 688 10693 5.29 13.67 0.50
November 697 12593 125 1315 9.58 16.41 0.91
a The number of mosquitoes is the number of females trapped.
b A record is the monthly mean number of mosquitoes of a competent vector species trapped at a given site.
c The abundance indices were calculated using the following equation: [(number of female mosquitoes collected in the
month) / (total number of female mosquitoes collected] / [(number of trap nights in the month) / (total number of trap
nights)].
Table 4.5 and Figure 4.2 show the number of each competent vector species collected
in Virginia. The greatest number of mosquitoes collected was Cx. restuans (16.96%), Cx.
salinarius (15.57%), and Cx. pipiens (15.44%) followed by Ae. canadensis (15.08%), Ae.
vexans (9.53%), Ae. albopictus (8.80%), Ae. triseriatus (6.44%), Ae. taeniorhynchus
(2.29%), and Ae. sollicitans (0.58%). Ae. canadensis had the highest abundance index
(2.47), followed by Cx. pipiens (1.20) and Ae. taeniorhynchus (1.20). Spatial maps showing
trap site locations and mosquito density at the trap sites for each of the 9 mosquito species
considered to be potential competent RVF vectors are displayed in Appendix A.
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