1. Symbiotic Relationships
Symbiosis: relationship in which one species lives on, in or near another species and affects its survival.
Symbiotic Relationships

2. Commensalism: One species benefits and the other is unaffected (+ o)
Epiphytes: A plant, such as a tropical orchid that grows on another plant upon which it depends for mechanical support but not for nutrients. Also called aerophyte, air plant.

3. Commensalism: One species benefits and the other is unaffected (+ o)
Remora fish catching a ride on a shark. It goes everywhere with the shark to get the scraps from the sharks last meal.

4. Commensalism: One species benefits and the other is unaffected (+ o)
Barnacles attached to a whale. The barnacles do not hurt the host but just go along for the ride and to gather food.

5. Parasitism: One species benefits, the other is harmed (+ -)
A Mosquito getting a warm meal.

6. Parasitism: One species benefits, the other is harmed (+ -)
A bed bug sucking the blood out of it's host.

7. Bot Fly Eggs
Egg: The egg of the bot fly is creamy colored and oval in shape, and is attached to different species of blood-feeding insects captured by the female bot fly.
The eggs, usually attached to the ventral side of the body, hatch when the insect carrying the eggs begins to blood feed on a warm-blooded host.

8. Parasitism: One species benefits, the other is harmed (+ -)
Bot Fly Larva
Adult Bot Fly

9. Bot Fly: Monsters Inside Me
Watch: Monsters inside me: botflies

10. Host of Bot Fly
The most common hosts for the human bot fly are cattle and dogs. However, they are found in many warm-blooded animals including buffalo, cattle, cats, dogs, humans, monkeys, pigs, rabbits, and sheep.

11. Mutualism: Both species benefit (+ +)
Lichens are pioneer species that grow where no other plant life can survive (on trees, rocks, and even buildings)
Lichens are a fungus (which is the part you see) thriving within the fungi is an algae that is totally dependent upon the fungi for it's survival.
In return for comfortable living quarters, the algae produce food for the fungus via photosynthesis.
The fungus can not survive with out this energy source so we have the example of a classic obligatory symbiotic relationship.
This also explains why lichens can be found growing in the middle of a rock in the middle of nowhere.

12. Mutualism: Both species benefit (+ +)

13. Mutualism: Both species benefit (+ +)
The Egyptian Plover bird cleaning the food stuck in the crocodiles teeth.

14. Mutualism: Both species benefit (+ +)
The bee spreads pollen from flower to flower, bees produce 1/3 of the worlds food supply. Did you know: Our bees are in danger and are suffering from CCD

15. = 1 species Type of relationship Species harmed Species benefits
Species neutral
Commensalism
Parasitism
Mutualism
= 1 species

16. The End