MSC 111 Lecture 19: Aquaculture

• School: University of Miami
• Department: Marine Science
• Course: MSC 111
• Professor: Peterson Larry

Document Summary

Need 200 kcal (food cal) / day to survive. Need for increasing food production has been incremental until last century. Demographic transition: birth rates, death rates, immigration, migration, etc. China and india- increasing how much they need to spend to live. ,000/person- spend 30% expenditures on meat (protein source) Minimum 30-40% increase in food production is needed. Aquaculture- highest growth rate of all food sources. Commercial fishing an agricultural rate are constant. Dug enclosures converted from agricultural lands flooded with seawater. Raised in small tanks by lowering lines- larvae attached when brought in by the current. Depend on tides for filter feeding- let them grow to harvestable sizes. Allow seeds to settle and kept suspended. >60% of all aquaculture is freshwater (carps) Sa(cid:373) malo(cid:374)e"s fish i(cid:374) fish our o(cid:271)je(cid:272)tio(cid:374): Must catch wild fish to sustain farmed fish. 5lb wild fish = 1lb farmed salmon. 16kg wild fish = 4 kg of salmon (actual calculations)