1. Activity 73: Introduced Species

2. What is an introduced species?
A species that has been moved by humans from its normal habitat to a new habitat, either intentionally or by a mistake
Also often referred to as invasive species

3. Example of Introduced Species: Nile Perch

4. Nile Perch Notes Name of organism
Lake Victoria perch (formerly Nile Perch)
Lates niloticus
Order – Perciformes
Class – Osteichthyes (boney fish)
Phylum – Chordata
Kingdom - Animalia
Distribution
Native to Lake Chad, Nile River, Zaire River, and Niger River
Introduced to Lake Victoria in the 1950s
Now present in huge numbers throughout Lake Victoria
Effects on people
Huge increase in food availability for locals
Decline in smaller fisheries and increase in large fishing operations
Increase in fish exports, providing more money and jobs
Effects on ecosystems
Extinction of 200 species of cichlids
Four-fold increase in algae levels, which has reduced oxygen availability in the lake
Increase in the number of insects (prey for cichlids)
Deforestation (wood needed to process Nile Perch)
Position in the food web
Predator of small fish such as cichlids
Nile Perch’s only predator are people
Reasons for success
No natural predators in Lake Victoria
Large, powerful fish – easily caches fish and shrimp native to Lake Victoria
Issues in the future
Governments and many local people do not wish to remove Nile Perch
Population of Nile Perch may change depending on its food availability

5. Websites used for Nile Perch

6. Task
Use the worksheet provided to record your notes on your introduced species
Use the websites identified within the webquest
Create a wanted poster using the template provided on the P: Drive

7. Rubric for grading: Communicating Skills
Level 4
Above and Beyond – 12/10pts
Student accomplishes level 3 response and enhances answer such as providing additional images, diagrams or facts
Level 3
Complete and Correct 10/10pts
Student communicates ideas clearly with no technical errors (grammar, spelling or sentence structure).
Level 2
Almost there
8/10pts
Student may have several technical errors (grammar, spelling or sentence structure) but the errors DO NOT prevent the audience from understanding the message
Level 1
On your way
6/10pts
Students communication is unclear or too many technical errors (grammar, spelling or sentence structure) seriously distracts the audience from understanding the message
Level 0
Redo
0/10pts
Students’ response is missing, illegible or irrelevant

8. Asian Carp

9. Asian Longhorn Beetle http://www.uvm.edu/albeetle/

10. Asian Tiger Mosquito

11. Brown Tree Snake https://www.britannica.com/animal/brown-tree-snake

12. Burning Bush (Winged Euonymus)

13. Canadian Geese http://www.dec.ny.gov/animals/7003.html

14. Common Teasel https://www.invasivespeciesinfo.gov/plants/teasel.shtml

15. Emerald Ash Borer

16. European Starling

17. Feral Pigs

18. Garlic Mustard

19. Golden Bamboo

20. Greenbrier (Round Leaf Greenbrier)

21. Honeysuckle

22. Hydrilla http://www.nyis.info/?action=invasive_detail&id=16

23. Japanese Barberry

24. Japanese Beetles

25. Japanese Knotweed

26. Japanese Stilt Grass

27. Kudzu

28. Multiflora Rose

29. Mute Swans

30. Norway Rat http://www.nsrl.ttu.edu/tmot1/rattnorv.htm

31. Nutria http://nutria.com/site.php

32. Purple Loosestrife

33. Pythons http://www.sciencedaily.com/releases/2008/02/080223111456.htm

34. Snakehead Fish

35. Sparrows

36. Stink Bugs

37. Zebra Mussels