1. Arnold Says: Do it now! What is an exotic species?
What is an invasive species?
Do you know any examples?

2. What is an Introduced (exotic) Species?
Organisms that have either intentionally or accidentally been released into this country that are (non-native)

3. Ring Neck Pheasant

4. Brown Trout

5. What is an Invasive Species?
Invasive Species- Exotic organism that takes over an environment and disrupts the community by out-competing or destroying native species.
Overall negative impact to ecosystem.

6. Kudzu Also known as mile a minute vine- can grow 1 foot a day.
Introduced from Vietnam in the southern US to control erosion.
Quickly got out of control and spreads 150,000 acres annually.
Negative Impact: Chokes out native plants

7. Zebra Mussles Mollusk from Russia Has invaded the Great Lakes
Negative Impact: Clogs drains and covers beaches, boats, and other animals.

8. What is a vector?
Vector- This is the medium (method) through which an invasive species gets to a location.

9. How does the Zebra Mussel affect the food web in the Great Lakes?

10. Lionfish
Ouch!!!
Ouch!!!
Vector?
Ouch!!!

12. Asian and Silver Carp Imported from Asia for food and algae control
Can grow to 100 lbs and jump 10 feet out of the water.
What impact do they have on the environment?

13. Ouch!
Asian Carp Video
Turn a Negative into a positive

14. Stink Bugs!
Introduced accidentally around the summer of 1998, possibly on container ship from Asia.
First seen in US in Allentown, PA
No natural predators because of the smell and distaste to other animals
Negative Impact: Agricultural pest and indoor pest (seeks warm during cold weather).

15. Burmese Python Released by pet owners that can’t handle them.
Everglades similar to home environment.
Negative Impact: Outcompete the top predators.
Python v. Gator Video

16. Get out your HW! What is an invasive species?
How is it different from an exotic?
What is a vector?
Give 3 examples.

18. What are common characteristics of most invasive species?
Rapidly reproduction
Not many (if any) limiting factors
Outcompete native species for resources
No “natural” predators in new environment.

19. Snakehead Fish
Read the following article and answer the questions about the snakehead fish. Please do this on your own. You have about 10 minutes.

20. Northern Snakehead Distribution
Video of Snakehead Fish
Sightings in US since 1997 by USGS
Video of Snakehead v. Large Mouth Bass