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Predator-Prey

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Incarnation Catholic

on 25 March 2015

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Transcript of Predator-Prey

Predator-Prey
Arctic Foxes and Lemmings
An interesting example in the form of the relationship between the Arctic fox and lemmings it is interesting because lemming population is cyclic it fluctuates every three to five years. The population of Arctic foxes in certain regions is driven by lemming population, we get to see a direct relationship between the number and size of Arctic fox litter and lemming availability.
Grizzly Bear and Salmon
In some predator-prey relationships, the prey has virtually no defense against the predator. The grizzly bear-salmon relationship is an apt example of the same. A poor salmon run can have a domino effect on the health and population of grizzly bears, and researchers are worried that poor salmon runs will become frequent over the course of time.

Wolves and Moose
The relationship between wolves and moose on Isle Royale, an island, gives the best picture of predator-prey relationships, as moose are almost the only prey for wolves on the island. After studying their relationship for decades, researchers have realized that the food shortage resulting from wolves eating too many moose, keeps a check on the wolf population as well.

Osprey and Fish

An osprey catching a fish will be a perfect example of predator and prey in action. This bird is found nearly everywhere where it can find fish to prey upon. With its exceptional eyesight, the osprey can see any movement in the water. It strikes at a fast speed and pulls the fish out of water, thanks to its opposable claws and the sharp spiny scales on its toes. As for fish, their best defense is to avoid shallow water.

Great White Shark and Elephant Seals
The great white shark is the apex predator. It usually preys on elephant seals. For seals, the best way of defense is to stay on land. For the great white shark, its exceptional hearing skills help to locate the seal. It is not always possible for the seal to stay out of water, because it can die of hunger. The moment it gets into the water, it is on the great white's radar.

Cat and Mouse
One of the simplest examples of predator-prey relationship is a cat and mouse, and it's highly unlikely that you must have never heard of the relationship. However, the chances are that a cat may not prey on the mouse for food, especially if it is used to an environment where it gets its food served in a food bowl from time to time.

The most famous example of predator-prey is the relationship between the cheetah (the world's fastest land animal) and the gazelle. Since there is no place to hide in the open grasslands, the gazelle has to outrun the cheetah, and the gazelle (knowing that the cheetah runs really fast when it runs in a straight line) does this by running in a zigzag pattern.
Cheetah and Gazelle
Similar to the cheetah and gazelle relationship is the relationship between African wild dogs and zebras. Wild dogs might be small, but they make up for it by resorting to pack behavior and their remarkable stamina. What they do is find the zebra, isolate the zebra, ware it out, then bring it down by grabbing its tail and nose. As for zebras, they have the camouflage, making it difficult for their predators to isolate and attack a zebra.

African Wild Dogs and Zebras
Another predator-prey relationship is the Canadian Lynx and the Snowshoe Hare. After counting the number of lynx and hare hides brought in by hunters, Canadian biologist, Charles Gordon Hewitt came to a conclusion that the two animals are highly dependent on each other, the population of the Canadian lynx rises and falls with a rise and fall in the snowshoe hare population. Research showed that it was food shortage resulting from the drop in hare population that affected the reproduction rate of lynx's.

Canadian Lynx and Snowshoe Hare
Wildebeests and Cape buffaloes form a major part of their diet, African lions are also known to eat warthogs, especially when they are easily available. However, warthogs, with their eyes on the top of their head and their tusks don't necessarily make an easy prey for the lion.
Lion and Warthog
Where do I see God?
I see God in the way he made
every animal either a predator or
prey, but some animals are both.

Interesting Facts
If a predator were fully
efficient, all of its prey would be
eaten, and the prey would go
extinct, and so would the
predator.
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