Table 5.
Mean (± SEM) number of seeds consumed for four weed species by four different omnivorous ground beetle species over a 48-h period
Weed | Ground beetle species | Overall mean | |||
---|---|---|---|---|---|
Amara carinata | Harpalus amputatus | Harpalus erraticus | Harpalus pensylvanicus | ||
Barnyardgrass | 0.32 ± 0.16a | 0.22 ± 0.13a | 10.26 ± 1.20a | 8.12 ± 1.26a | 4.91 ± 0.39a |
Yellow foxtail | 0.06 ± 0.07a | 0.87 ± 0.29a | 0.65 ± 0.24b | 1.25 ± 0.35b | 0.76 ± 0.13b |
Kochia | 3.12 ± 0.87b | 6.26 ± 1.27b | 8.06 ± 1.02a | 2.11 ± 0.48b | 5.36 ± 0.42a |
Lambsquarters | 6.82 ± 1.76c | 10.20 ± 1.94c | 19.63 ± 1.96c | 21.79 ± 2.93c | 15.78 ± 0.94c |
Dry beetle dry weight (mg) | 39.34 ± 2.21 | 23.02 ± 1.36 | 85.50 ± 5.10 | 56.27 ± 3.35 |
Values within a column followed by different lower case letters indicate significant differences in the mean number of weed seeds consumed by a particular ground beetle species (Tukey’s Honest Significant Difference multiple comparison test, α = 0.05).