The prevalence of intraguild predation (IGP) in productive environments has long puzzled ecologists. Theory predicts the exclusion of intraguild prey from such environments, but data consistently defy this expectation. This suggests that coexistence mechanisms at high resource productivity may differ from those at lower productivity. Here I present a mathematical model that investigates multipl...

The strength of interference between foraging individuals can influence per capita consumption rates, with important consequences for predator and prey populations and system stability. Here we demonstrate how the replacement of a previously established invader, the predatory crab Carcinus maenas, by the recently invading predatory crab Hemigrapsus sanguineus shifts predation from a species tha...

The direct toxicity of insecticidal soap, horticultural oil, Azatin, an extract from the Neem tree containing azadiractin, and BotainiGard, a commercial formulation of the entomopathogenic fungus Beauveria bassiana, was assessed on adults of four species of coccinellids--Hippodamia convergens (Guérin-Ménéville), Coleomegilla maculata (DeGeer), Harmonia axyridis Pallas, and Cryptolaemus montrouz...

Abstract Background The ladybird beetle Cryptolaemus montrouzieri Mulsant, 1853 (Coleoptera, Coccinellidae) is used worldwide as a biological control agent. It predator of various mealybug pests, but it also feeds on alternative prey and can be reared artificial diets. Relatively little known about the underlying genetic adaptations its feeding habits. Results We report first high-quality genom...

<abstract><p>The indirect effect of predation due to fear has proven have adverse effects on the reproductive rate prey population. Here, we present a deterministic two-species predator-prey model with herd behavior, mutual interference, and fear. We give conditions for existence some local global bifurcations at coexistence equilibrium. also show that can induce extinction populati...

We present a notion of non-interference which embodies the notion of time. It is useful to verify the strength of a system against attacks depending on the frequency of certain actions. In particular we give a decidable definition of non-interference which can be checked by using existing verification tools. We show an application example of our notion of non-interference by defining a variant ...