Figure 1.
Map depicting 28 traps set in a transect array at 90° angles from the center of the waste-water lagoon at dairy farms where the lagoon infrastructure has been removed (Farm A) and retained (Farm B).
Figure 2.
Seasonal abundance of C.sonorensis collected on each farm.
A) Seasonal abundance of adult (adults per trap per day) Culicoides sonorensis collected on dairy Farm A; B) Seasonal abundance of immature (larvae/30 ml sample) (dashed line) and adult (adults per trap per day) (solid line) Culicoides sonorensis collected on dairy Farm B. The star denotes capture of 32 parous females during the month of February on the site with a lagoon present.
Figure 3.
Seasonal abundance of adult Culicoides sonorensis distinguished by sex and parity (males- dotted line; parous-dashed line; nulliparous-solid line) for Farm A (top) and Farm B (bottom).
Figure 4.
Seasonal C. sonorensis abundance for first and second (A), third (B), and fourth (C) instars.
Table 1.
Mean seasonal physiochemical characteristics of waste water lagoon pond on dairy farm with lagoon infrastructure present and crop rotation/harvest schedule.
Figure 5.
Culicoides sonorensis abundance (back-transformed geometric mean per trap day) at 28 trap sites along 4 transects (north, south, east, and west) on Farm A and Farm B.
Abundance is represented by solid black circles, graduated in size. Further characterization of the proportions of males (black shading), nulliparous (white), and parous females (line shading are represented by pie diagrams for each trap.