1. Review SYMBIOSIS And TYPES of SYMBIOSIS
Species Interactions
Review SYMBIOSIS
And TYPES of SYMBIOSIS

2. Ecological Relationships
Oppositional relationship – opposing each other
Predator/Prey
Competition
Symbiosis – a close relationship between 2 different species
Mutualism
Commensalism
Parasitism

3. Species interaction: Opposition
Predation 1 – predator / prey; one eats another Video
Competition – Two species fight over a single resource, one loses

4. Predation

5. Competition

6. Interspecific Interaction
Symbiosis is a close relationship between two unrelated organisms
Parasitism
Mutualism
Commensalism

7. Symbiotic Relationships
Symbiosis- two species living together
3 Types of symbiosis:
1. Commensalism
2. Parasitism
3. Mutualism
Cleaning shrimp

8. Videos on Symbiosis
Rhino / White bird
Explain the relationship

9. Symbiotic Relationships
Mutualism-
beneficial to both species
Ex. cleaning birds and cleaner shrimp
The Egyptian plover takes insects from the backs of buffaloes, giraffes and rhinos. The plover has also been observed taking leeches from the open mouths of crocodiles! In this association the plover receives a supply of food and the other animal rids itself of unwelcome pests

12. Symbiotic Relationships
Mutualism-
beneficial to both species
Ex. lichen
The Egyptian plover takes insects from the backs of buffaloes, giraffes and rhinos. The plover has also been observed taking leeches from the open mouths of crocodiles! In this association the plover receives a supply of food and the other animal rids itself of unwelcome pests

13. Lichen
Mutualism = Fungi and bacteria – important for ecological succession. Eat rocks.
Pioneer Species

15. Symbiotic Relationships
Commensalism-
one species benefits and the other is neither harmed nor helped
Ex. orchids on a tree
Epiphytes: A plant, such as a tropical orchid or a bromeliad, that grows on another plant upon which it depends for mechanical support but not for nutrients. Also called xerophyte, air plant.

16. Symbiotic Relationships
Commensalism-
one species benefits and the other is neither harmed nor helped
Ex. polar bears and cyanobacteria
You can see here that this polar bear is no longer white.

17. Symbiotic Relationships
Parasitism-
one species benefits (parasite) and the other is harmed (host)
Parasite-Host relationship

18. Symbiotic Relationships
Parasitism- parasite-host
Ex. lampreys,
leeches, fleas,
ticks, tapeworm

21. = 1 species Type of relationship Species harmed Species benefits
Species neutral
Commensalism
Parasitism
Mutualism
= 1 species

22. PACKET REVIEW
video

23. California Sea Otters
KEYSTONE SPECIES – a species critical to the functioning of an ecosystem.
Read page 242

24. Sea Urchin and Kelp Beds

25. Ants and acacia tree
Nitrogen fixing bacteria
Protozoa and termite
Algae and sloth
Mistletoe and tree
Spanish moss and tree
Fluke eggs and host snail
Plover and crocodile

26. Wrasse and parrotfish
Clownfish and anemone
Parasitism
Body invaders
Lamprey
Tick

27. Review Notes! Video tomorrow Lab Tuesday Review Wednesday
Assessment Thursday
Review assessment friday