Evaluating the Structure of Enemy Biodiversity Effects on Prey Informs Pest Management

Figure 3

Model predictions about variation of per capita predation rates of mirids with species identity, whitefly nymph density and interactions between predators. Per capita predation rates of M. melanotoma alone (𝑝^′_𝑀𝑚) and in combination with P. phrygianus (𝑝^′_{𝑀𝑚+𝐿𝑖}) decrease with increasing whitefly nymph density. Per capita predation rates of N. tenuis alone (𝑝^′_𝑁𝑡) and in combination with any other predator (𝑝^′_{𝑁𝑡+𝑃𝑗}) tend to decrease less sharply with whitefly density. The two predators appear complementary across prey density. Parameter estimates taken from model J9.