Predator mentality vs prey mentality
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The idea was that the Predator also had primitive weapons that evolved.” He added that the prequel “wasn’t about weapons against weapons,” but rather “this girl and this creature and how they all merge together.” “When we started working on the Predator’s instruments, we had some designs come through that looked a little more homemade. “This one’s head wasn’t huge, the dreadlocks became thinner, and we were trying to mimic the feel of the warriors in their long hair,” he continued. When that balance is disrupted by an invasive species, it can completely change the composition of the community, often eliminating many native species that are not prepared to compete with or evade the new species.Close up of the Predator suit David Bukach Predation is a key aspect of any environment and can help stabilize and influence the biodiversity within a community. There are insufficient resources to support the other predatory species and they are being eliminated from environment along with many native prey species that are not adapted to having the python as a predator. It may eliminate both predators and prey within the system causing a domino effect.Ī trophic cascade occurs when a number of species at all levels of the food chain within the environment are affected by the introduction.įor example, the released pythons are eating many of the top predators and their prey species. The invasive species disrupts the balance within an environment. Other times, it comes to the new environment via a shipment from another location or an accidental disbursement. This is what has occurred with rock and Burmese pythons in Florida.
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Sometimes the invader is a species kept as a pet that is released into the wild. Invasive species are ones that are introduced to an environment where they are not naturally occurring either by accident or purposefully. Removing the predator from the environment, often results in a rapid decrease in biodiversity as one species takes over the environment, eliminating its competitors by using up all the resources. A keystone predator is one whose presence allows multiple species that compete with one another for resources to exist in an environment. It does this because it keeps the populations of the different competitors in check through predation. Many predators dine on multiple types of prey. These factors, such as spatial heterogeneity and prey defense mechanisms, act to stabilize the relationship, preventing the predatory or prey species from disrupting the cycle.įor example, when the prey becomes sparse, their density within a predator’s territory also becomes much less, making it harder to find prey and allowing some of the prey to survive without being completely eliminated by the predator. It is important to remember that there are other factors at work too though.
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One of the best known examples of this cycle occurs with snowshoe hares and Canada lynx. That results in a decrease in the number of predators as the food resource becomes smaller which in turn decreases the rate of predation, allowing the prey species population to flourish again. When the prey species is numerous, the number of predators will increase because there is more food to feed them and a higher population can be supported with available resources.Īs the number of predators begins to increase, the density of the prey population will decrease in response to increased rates of predation. It is logical to expect the two populations to fluctuate in response to the density of one another.