Download Coqui Frog - Northwest ISD Moodle

Golden Coqui
Frog Activity
Why are we doing this
activity?


The Golden Coqui (Eleutheroactylus jasperi) is one of the
most important symbols of Puerto Rico. The Coqui (co-key)
frog is very small, measuring only one-quarter to one inch
long and can jump many feet in a single leap. The color
ranges from cream to deep brown, an adaptation to help
the Coqui blend into its environment to avoid predation.
In this activity, you will investigate the environmental
pressures that can lead to the extinction of a species such
as the Golden Coqui frog. Some of these pressures include:




Habitat destruction due to environmental pollution or
natural causes
Predation from man, natural and introduced species
Lack of food or water
Illegal poaching
II.
Copy Data Table 1 into your
journal.
DATA Table 1
Years →
0
Trial 1
15
Trial 2
15
Trial 3
15
1
2
3
4
5
6
7
8
9
10
What are we going to do?

You will begin each trial with 15 Coqui frogs living in the
rainforest.
What are we going to do?

You will begin each trial with 15 Coqui frogs living in the
rainforest.
What are we going to do?


You will begin each trial with 15 Coqui frogs living in the
rainforest.
Each partner will roll one die. Based on the results of
both dice, the Coqui frog population will either increase,
decrease, or stay the same.
What are we going to do?



You will begin each trial with 15 Coqui frogs living in the
rainforest.
Each partner will roll one die. Based on the results of
both dice, the Coqui frog population will either increase,
decrease, or stay the same.
Use the information in the Trial Key to determine what
each roll of the dice will represent.
Trial Key
If you roll a…
2
3
,then you…
reproduce. (+1)
continue living.
(no change in population)
8
die from habitat
destruction by
environmental
pollution/natural disaster.
(-1)
die from habitat
destruction by
environmental
pollution/natural disaster.
(-1)
die from a natural
predator.
(-1)
die from an exotic or
introduced animal species.
(-1)
die from starvation from a
competition and/or lack of
food or water. (-1)
9
die in a poacher’s home
aquarium. (-1)
10
continue living.
(no change in population)
11
continue living.
(no change in population)
12
reproduce. (+1)
4
5
6
7
Let’s Look at
Trial 1…
If you rolled a 1 and your
partner rolled a 4, your total
would be 5.
What are we going to do?




You will begin each trial with 15 Coqui frogs living in the
rainforest.
Each partner will roll one die. Based on the results of
both dice, the Coqui frog population will either increase,
decrease, or stay the same.
Use the information in the Trial Key to determine what
each roll of the dice will represent.
After each roll, add or subtract frogs according to the
information in the Trial Key.
Trial Key
If you roll a…
2
3
,then you…
reproduce. (+1)
continue living.
(no change in population)
8
die from habitat
destruction by
environmental
pollution/natural disaster.
(-1)
die from habitat
destruction by
environmental
pollution/natural disaster.
(-1)
die from a natural
predator.
(-1)
die from an exotic or
introduced animal species.
(-1)
die from starvation from a
competition and/or lack of
food or water. (-1)
9
die in a poacher’s home
aquarium. (-1)
10
continue living.
(no change in population)
11
continue living.
(no change in population)
12
reproduce. (+1)
4
5
6
7
Let’s Look at
Trial 1…
If you rolled a 1 and your partner
rolled a 4, your total would be 5.
Looking at the Key, you would
lose one animal from your
population.
What are we going to do?





You will begin each trial with 15 Coqui frogs living in the
rainforest.
Each partner will roll one die. Based on the results of
both dice, the Coqui frog population will either increase,
decrease, or stay the same.
Use the information in the Trial Key to determine what
each roll of the dice will represent.
After each roll, add or subtract frogs according to the
information in the Trial Key.
Count the number of Coqui frogs at the end of each
year and record the information in your journal.
Don’t forget, you
will need to record
information from this
activity in your data
table.
Then, what?
 When
you are done, graph your results to
show how the population changed over
10 years.
 Use the correct map pencil for each trial.
 Answer the CONCLUSION questions.
Conclusion
 1.
Describe what happened to your
population of Coqui frogs in each of the
three trials.
 2. What can humans do to reverse
environmental change?
 3. What will happen to the ecosystem if
the Coqui frogs disappear?