CAMBRIDGE, Massachusetts (Reuters) - Maine's lobstermen and seafood processors are seeking permission to harvest more shrimp in the only native habitat for northern shrimp in the United States. Limits for harvesting the small sweet shrimp have been steadily dropping in recent years, with the 2012 quota at 2,000 metric tons, just half of the 4,000 metric ton limit for 2011. The seasonal lobster ...