Ms. Fleming 02/22/12

Objectives Define 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

OCEANS Represents 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? Frogs Turtles Reptiles Amphibians - 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. Water Amphibians Frogs turtles reptiles Are all animals that live part of their life in fresh water and the remaining on land. Aquatic Animals Shellfish Crustacceans 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 6H 2 O + 6CO > C 6 H 12 O 6 + 6O 2 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 life Larvae: 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 Nitrogen Too 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 = neutral Below 7 = acidic Above 7 = basic or alkaline water

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