ANS 1 Lecture Notes - Lecture 7: Oyster Farming, Veliger, Ostrea
Document Summary
Fish: we are rapidly depleting species - issue. Aquaculture (mariculture = farming in the ocean: world statistics. We more so feed the fish, versus feeding the water. 5,000 years ago -> fish actually raised in setting controlled by humans. Polyculture - raising many species together in one space. Different species live in different layers of water (pond = 3-d) Fertilize pond - algae grow, animals eat algae and so on. Feed the water versus feeding the fish: worry about pollutants that get into water, also worry about bacteria or oxygen concentration or temperature of water. Fish = politotherms -> body temperature determined by water temperature. Water quality -> chemicals, biological toxins o. Foods eating raw, need to be concerned with what goes in them, can"t/don"t clean them. Sessile - water rolls on top of them. Prefer 1-2% salinity (the ocean is 3. 5%: don"t taste as good in higher salinity.
