BIOLOGY 2F03 Lecture Notes - Parasitoid Wasp, Paramecium, Predator Satiation
Document Summary
Rate of prey (or host) population, n, change: Equals the exponential rate of increase by prey population. Minus p the number killed by 1 predator. Rate of predator (or parasite) population, n, change. Equals the rate, cp, at which prey are converted to predators (offspring) Host to predator conversion rate; analog of r. Plot prey and predator against time: when predator increases, prey number declines and vice versa. Outcome: oscillations in time can be viewed as cycling of two populations. Unlikely that they will always follow the same path. Weevil beetle and parasitoid wasp six years of observations 112 generations reciprocal fluctuations with delay (even with no climatic impacts) Paramecium and didinium: in the absence of refuges and immigration. With a refuge, prey persists, predator loses. With immigration, both persist and oscillate can this be produced without human intervention. Migration made to rely on the animals without human intervention.
