Prey vs predator lab3/30/2024 ![]() Using a long-term mesocosm experiment, we have examined: 1) the relative importance of cascades that occur via changes in density versus traits (DMII versus TMII) and 2) the temporal dynamics in the magnitude of DMIIs and TMIIs. These impacts can cascade through larger communities that contain many predator and competitor species. In a captive or laboratory situation, where prey, predators or meso-predators cannot get their distance from us, we should expect them to freeze in place, hide if they can, tense up or counter-attack if restrained for an exam. reducing their density) or through inducing phenotypic changes (i.e. Lastly, predators can impact prey by direct consumption (i.e. While the fission rates might depend on the actual laboratory experiment (see Figures 2 and 3 of Veilleux 1979) further complexity of intergenerational dynamics arises from the fact that fission rates of the predator (Didinium) are by about 30 larger than those of the prey (Paramecium). We have documented that snails lose their ability to respond to environmental variation in predation risk as they age due to developmental constraints associated with shell development. Population Dynamics: Predator/Prey In this lab students will simulate the population dynamics in the lives of bunnies and wolves. While predator-induced defenses have clear advantages for prey, organisms are not infinitely plastic. Recently, we documented that functionally different predator species are a major factor maintaining plasticity in defensive traits. Graphs make it easier to see and understand numerical relationships. Background: Graphs: Numerical data are often best represented in the form of a graph. Objectives: Perform an experiment which simulates evolution by natural selection Draw a graph Write parts of a scientific lab report. The ability to detect specific predator species is critical for snails because predators vary in feeding mode. BIO 101 Lab: Evolution Simulation: Predator-Prey. Importantly, snails are capable of identifying the specific predator species and their densities in the environment by eavesdropping on the chemical cues released in the predators’ waste products. We have discovered that snails adaptively respond to the presence of predators by altering a complex suite of traits (i.e. Using freshwater snails and their predators (e.g., crayfish, fish, insects) as a model system, the Hoverman Lab addresses the ecology and evolution of predator-prey interactions (i.e. They will discover how both predator and prey interact with each other and affect the number of individuals in a given region. The risk of predation is perhaps the most pervasive form of stress in ecological communities and has substantial effects on the ecology and evolution of organisms and their communities. Population Dynamics: Predator/Prey Teacher Version In this lab students will simulate the population dynamics in the lives of bunnies and wolves.
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