AquacultureMs. Fleming

02/22/12

ObjectivesDefine aquaculture.Recall terms dealing with aquaculture.Describe animals surviving in the aquatic

environment.Explore photosynthesis.

What is Aquaculture?Management of the aquatic environment to

increase the harvest of useable plant and animal products

OCEANSRepresents the largest body of water

Salinity in this water is high

Salinity : is the measure of total mineral solids in the water, and is measured by either Electrical Conductivity or converted to Parts Per Thousands (PPT)

Gradient: deals with types of organisms that flourish in the ocean. Gradient measures the amount of salt and its effects over time.

Types of Water…Brackish: is a

mixture of fresh water and salt water.

Ex- Colorado river meeting the Gulf of Mexico in Matagorda bay

Bull shark can survive in this type of water. Any others??

Where Do You Think We Can Survive?

FrogsTurtlesReptilesAmphibians- A cold-blooded, smooth-

skinned vertebrate of the class Amphibia, such as a frog or salamander, that characteristically hatches as an aquatic larva with gills.

Land vs. WaterAmphibians

Frogsturtles reptiles

Are all animals that live part of their life in fresh water and the remaining on land.

Aquatic AnimalsShellfishCrustacceans Fish

These animals live their entire life either in fresh water, brackish water, and/or salt water

Are plants important?Plants harvest energy from the sun through

photosynthesis

What is photosynthesis? the process by which plants some bacteria and protistans

use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things

6H2O + 6CO2 ----------> C6H12O6+ 6O2

Also serve as waste recyclers

How does it work?How do fish breathe?

They use gills to breathe in oxygen from the water

Crustacceans have what kinds of skin?Exoskeleton , which they molt during certain

times of the year. Ex- hermit crab

Aquatic lifeLarvae: are mobile

aquatic organisms that grow into nonmobile adults

Ex- Coral

How do fish reproduce?Called spawning

which is to lay eggs

Salmon leave salt water and travel upstream to spawn

The harvesting of fish is called seining or to seine.

More to know…TAN= Total

Ammonial NitrogenToo much is often

toxic to aquatic species.

Toxins can have an adverse affect on the growth and development of plants and animals

pH =Measures acidity and alkalinity of water

pH scale 7 = neutralBelow 7 = acidic Above 7 = basic or

alkaline water

Watch a little about aquatic life

http://dsc.discovery.com/videos/life-nemertean-worms-and-sea-stars.html