1. Symbiosis
Overview

2. Types of Symbiosis Mutualism: both organisms benefit
Commensalism: one benefits, the other is not affected
Parasitism: one benefits, one is harmed (host)

3. Relationships Develop from Niches
Niche: what an organisms does or its role in the environment
Terrestrial & Aquatic relationships
Natures Way: Organisms are assisting or using one another
Predator-Prey; not symbiosis {helps balance population densities}

4. Partnerships are not helpful to everyone
Parasites: such as; ticks, mites, mosquitoes, leeches, fleas, lice, hookworms, tapeworms
Ex: Ticks & Flea

5. Leeches, Bed Bugs & Mites
                               
Bed bugs
Leeches, Bed Bugs & Mites

6. Parasitic Worms #1 = Hook worm
#2 = Tapeworm { longest parasite; millions of eggs /day }
#3 = Tapeworm embedded into intestine
#4 = Roundworm { up to 20 inches; 200,000eggs/day}

7. Commensalism in Plants
Epiphytes: grow upon another plant for support
Example: Spanish mosses, ferns, cacti, orchids, bromeliads
Ex: Spanish Moss &
Bromeliad together

8. Parasitic Plants
Mistletoe; takes some nutrients from trees

9. Aquatic Commensalism Barnacles {animal} on whales
They are filter feeders that do not harm whales

10. Insect / Plant Commensalism
Spider web on plants

11. Commensalism in Fish Remora {sucker fish} & Sharks
Remora gets protection, transportation, & scraps of food from its host

12. “Cleaner Fish” A Mutual Relationship
Take off parasites / dead skin {scales}
Gobies, wrasses, cleaner shrimp

13. Mutual Relationship Blind Shrimp & Shrimp Goby
Shrimp digs the home, Goby keeps an eye out

14. An Animal & an Algae
Coral { Animal } lives w/ photosynthetic algae {Zooanthellae } for most of its nutrients.
What kind of relationship?

15. What’s inside a Termite?
All termites eat cellulose { plant fiber }
There is a symbiotic protozoa inside the termite that digests the wood fiber with the help of symbiotic bacteria on the protozoa.
What kind of relationship?

16. An Algae & a Fungi
Lichen; The algae conducts photosynthesis {nutrients}, fungi provides the home.
What kind of relationship?