1. Marine Biology
DAY 3
Drill: What are some abiotic and biotic factors that would affect organisms in a salt water fish tank?
Biotic
Abiotic
Outcome: Define the different relationships between marine organisms. Compare marine symbiotic relationships.
Agenda:
Discuss interactions between marine organisms

2. Competition What is Competition? There are two types of competition:
When two or more species compete for the same resource, space/food/light.
Ex. Connells barnacles
There are two types of competition:
Intraspecific - within one species
Interspecific - between species

3. Competitive Exclusion
What is Competitive Exclusion?
When a less successful species is replaced by a more successful one.
This happens often when an invasive species appears.
Organism not native to the area

4. Symbiosis
Symbiosis - ecological relationship between the individuals of two (or more) different species
Four examples of symbiosis:
Parasitism – One benefits, the other is harmed (+ , - )
Commensalism – One benefits, the other is neither helped nor harmed ( + , O )
Mutualism – Both benefit ( + , + )
Predator/Prey – One hunts and kills the other (+ , - )

5. Grouper Fish with a parasite
Parasitism Examples
Cymothoid isopod and
a snapper fish
Grouper Fish with a parasite

6. Commensalism Examples
Remora fish
Pearl fish and a sea cucumber
Shark with a remora fish

7. Mutualism Examples
Clown Fish and anemone
Boxer Crab and anemone

8. Predator/Prey Examples
Orcas and seal
Great White and seal

9. Symbiotic Worksheet Read the 10 scenarios and determine if they are:
M: Mutualism P: Parasitism C: Commensalism
In each scenario highlight or underline your justification for each answer choice!!!
When done show me your worksheet!
Think about how you can create symbiotic relationships within your aquarium exhibit!

10. Important Information
9/18 we will be looking at food chains and food webs within marine environments
9/20 we will be reviewing and you will be taking your first quiz on:
Ocean Zones
Marine Lifestyles
Symbiotic Relationships
Food chains & Food webs

11. Aquarium Project Goals for the Aquarium Project Name of Aquarium
Are there additional attractions?
Why is it so great?
Goals for the Aquarium Project
Name of Aquarium
Why should people come
Cost (enter / build)
Organisms in the aquarium
Layout / BluePrint (sketch) with explanation
How they environment meets the needs
Filters/Temp control/Salinity
Organized and colorful (pictures!)
How will you stop them from eating each other?
Is the temp, lighting, space enough?
How will you make it meet the needs/lifestyle of the orgs?