Figure 1.
Levels of intraguild predation among four species of coccinellids measured by molecular gut content analysis in soybean fields in Québec, Canada, in 2004 and 2005.
Results are expressed as the proportion of each species of intraguild prey detected in the gut of intraguild predators. Ha = Harmonia axyridis, C7 = Coccinella septempunctata, Cmac = Coleomegilla maculata, P14 = Propylea quatuordecimpunctata. Numbers above histogram bars represent the number of individuals tested.
Figure 2.
Relative strength of intraguild predation by each of the four coccinellid species measured by molecular gut content analysis in soybean fields in Québec, Canada, in 2004 and 2005.
Results are shown for raw and weighted data*. Ha = Harmonia axyridis, C7 = Coccinella septempunctata, Cmac = Coleomegilla maculata, P14 = Propylea quatuordecimpunctata.
Table 1.
Number (N) of specimens tested and levels of intraguild predation (raw data) among four coccinellid species with molecular gut-content detection of one to three different intraguild prey species in a same predator, in 2004 and 2005.
Table 2.
Selected examples of intraguild predation under field conditions among different taxa.