Cod fisheries into a "codfish aristocracy". The American settlers rose up against British "tariff on an import, instigated by merchants, including John Hancock and John Rowe, in which the scions of the codfish aristocracy" disguised themselves, boarded their own ships, and disposed of their own goods into the harbor in protest to the tariff, more commonly known as the Boston Tea Party (p. 96). In the 20th century, Iceland re-emerged as a fishing power and entered the Cod Wars to gain control over the north Atlantic seas. In the late 20th and early 21st centuries, cod fishing off the coasts of Europe
Blue cod change. Since a number of evidence indicated that blue cod are relatively sedentary, the fishing pressure may lead to potential local depletion. Recent studies showed that the genetic differences were significant between mainland List of islands of New Zealand population and Chatham Island population. On the other hand, the differences within mainlandList of islands of New Zealand populations were limited while the pattern of the isolation by distance was detected. Further research using microsatellite DNA markers suggested that some significant genetic differences between mainland population exist which indicate the potential long-distance dispersal, but the dispersal rate is too low to