OCE 3014L Lecture Notes - Lecture 16: Directional Selection, Edward Forbes, Estuary
25 Jul 2018
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59% what are the 3 predominant freshwater species raised in aquaculture: carp, tilapia, catfish what percentage of aquaculture fish are marine species. 35% what percentage of aquaculture fish are estuarine species. Can aquaculture compensate for declining catches? not how it is currently practices and puts additional pressure on wild stocks how much of wild fish caught go back into fishing. 10 mmt how is the chinook salmon in the columbia river an example of competition for food. In el nino years there is a strong negative relationship between hatchlings released and wild salmon but not in la nina years. They use areas that were once mangroves or salt marshes. Loss of natural fisheries what is the position of catfish in aquaculture. Low impact fish what is the position of trout farms. Has been able to drive some commercial fisheries out of business. 151 how many species are on the iucn redlist.
