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Predator Prey Relationships

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Hayley Igbokwe

on 4 November 2014

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Transcript of Predator Prey Relationships

Garter Snake Vs Rough Skinned Newt
Ladybird Vs Aphid
Predator-Prey Relationships
W/C 01/12/14
The wolves and moose of Isle Royale have been studied for more than five decades. This research represents the longest continuous study of any predator-prey system in the world.

The most important events in the chronology have been essentially unpredictable.

In 1980 the wolf population crashed when humans inadvertently introduced a disease, canine-parvovirus
Isle Royale - Wolf Vs Moose
We are now beginning to realize the important role they play in their ecosystem, eliminating the weak and the sick from the environment and keeping sea lion numbers under control.

Lack of great white sharks to control the sea lion population may be is thought to be one of the contributing factors to the declining salmon populations along the coast of California and Oregon.
Great White Sharks Vs Sea Lions
As a top predator, sparrowhawks can only thrive if their prey is present in good numbers and has a healthy population.
Sparrowhawk Vs Songbirds
Ladybirds are one of the most popular controls for aphids.

Both Ladybird adults and their larvae are voracious eaters and can make a real difference to the numbers of aphids

The seven-spot ladybird can eat 5000 aphids during its year long lifespan.
Predator Prey Relationships
You are working as a field research scientist and have been asked by the World Wildlife Fund to create a display poster detailing predator and prey interactions within wildlife populations.

You must include the following points:

1. Explain the predator prey relationship between two species including the positive and negative effects on each party. This must be for TWO examples of predator prey relationships
2. Discuss the evolution and population dynamics of a wildlife population including how and why the population has evolved over time; this could be an example taken from the predator prey relationship discussed for point 1.

Emphasis is placed on independent research for this task, therefore all work should be appropriately referenced, however species examples can be suggested by your tutor, notable predator prey relationships will be covered in class

All animals must eat to survive (Well Duh!).

With predators always on the lookout for a meal, prey must constantly avoid being eaten.

What have prey animals adapted as defense mechanisms?

What are examples of predator adaptations?
The predator-prey relationship is important in maintaining balance among different animal species. Without predators, certain species of prey would drive other species to extinction through competition. Without prey, there would be no predators. Thus, this relationship is vital to the existence of life as we know it.
How do you think this relationship allows "balance" in the population?
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