Transcript Boom and Bust, Predator and Prey, Relationships

Predator and Prey
K Coleman
SQ
• What would you like to know more about in
population ecology? What are you lost on?
Deer Activity (12-15 rounds)
• 2 parallel lines: record number of deer at beginning
and end of each round to graph later!
• Count off in 4’s
• #1: deer with their backs to other students
– Choose what your looking for at beginning, signal
• Other #’s: habitat component (food, shelter, water)
with backs to deer
– Choose what you are at beginning, hold sign
• Run to what you need when I say “Go!”
• Take what you need back to your line, it becomes a
deer. If not taken, you continue as a component.
• Any deer that fails, dies and becomes a component
Graph your results
and answer the following questions:
• We’ve talked about graphs- which does yours
resemble? Why is it an accurate or inaccurate
depiction of that graph/reality?
• Choose 3 terms in population ecology, and relate
them to this activity.
• How would you modify this game to result in
another type of graph?
Starting Question
• Which relationships or interactions are the
same between people and other animals?
Which ones are different?
Predation occurs when one organism captures and
feeds on another organisms. The organism doing the
eating is the predator and the organism being eaten
is the prey.
Predation is a driving factor in co-evolution.
The prey evolves to better escape the
predator.
In turn the predator evolves to better
capture the prey.
Predator vs. Prey Game
• You need to get the exact number of prey to
survive!
•
http://srel.uga.edu/kidsdoscience/kidsdoscience-predator-game.htm
• What would give predators the advantage?
How about prey?
Communities interact in a
variety of different ways
that enable the organisms
within them to establish a
niche and shape the
ecosystem in which they
live.
The following are types of
interactions within
communities:
The term symbiosis means
"living together."
When two species live closely
together they are said to be in a
symbiotic relationship.
There are three main categories
of symbiotic relationships:
 Mutualism
 Commensalism
 Parasitism
In mutualism, both species
benefit
from the relationship.
In this example,
the flower provides the
hummingbird with nectar
and the hummingbird
helps the flower reproduce
by transporting pollen
from one flower to the
next.
Mutualism: a
win/win situation
In commensalism, one
species benefits from the
relationship while the other
is neither helped nor
harmed by it.
In parasitism, one organism lives on or
inside another organism and harms it.
Parasites are organisms that obtain all or
most of their nutrients from other
organisms, called hosts. The host-parasite
relationship benefits the parasite at the cost
of the host.
Tapeworms live in the intestines of mammals and
"steal" nutrients from them. This is an example of
a.
b.
c.
d.
Competition
Mutualism
Commensalism
Parasitism
E. coli live in the human colon where they absorb
nutrients and produce vitamin K and sodium that
benefit their human hosts. This is an example of
a.
b.
c.
d.
Competition
Mutualism
Commensalism
Parasitism
A relationship in which one organism is helped and
another organism is neither helped nor hurt is called
a.
b.
c.
d.
Competition
Mutualism
Commensalism
Parasitism
A relationship in which one organism is helped and
another organism is neither helped nor hurt is called
a.
b.
c.
d.
Competition
Mutualism
Commensalism
Parasitism
Which of the following types of
community interactions leads to
coevolution?
a.
b.
c.
d.
Predation
Mutualism
Parasitism
All of the above
Community charades
• With a partner or group of 3, choose
organisms and demonstrate the relationship
between them
– Parasitism
– Mutualism
– Commensalism
– Predation
• Act it out, but you can’t speak! We will guess!