Pacific cod constitute one of the biggest fisheries in the United States. In Alaska, they are managed in the Gulf of Alaska and the Bering Sea/Aleutian Islands management units. Fisheries managers and fishermen alike are interested in fish movement – it provides information to manage fisheries sustainably. Genetic information is different from tagging; tagging can show where fish go, genetics can show which groups interbreed, and which do not. I was interested in whether Pacific cod in the Bering Sea/Aleutian Islands management unit were a single population, and was inspired by previous work. Here is the
result of my research, which describes evidence that more than one population of Pacific cod exists in this area.