Abstract
Juvenile and adult herring tagged along the Maine coast in 1976-78 exhibited migration patterns which varied with season and region in which they were tagged. Some of the herring tagged as summer-feeding juveniles in southwestern Maine overwintered in the region of Massachusetts Bay, whereas juveniles tagged at the same time in eastern Maine had a greater tendency to overwinter in eastern Maine. Many of the herring tagged as summer-feeding adults in eastern Maine also overwintered in Massachusetts Bay. Recoveries from these tagging of adults one year after release were generally distributed over many regions, whereas returns from tagging of juveniles were distributed among fewer regions. Recoveries from tagging of juveniles on the southwest and central coast of Maine one year after release were frequently from more easterly regions but recoveries from adults and juveniles tagged in eastern Maine were frequently from the same general area. Herring tagged as overwintering juveniles in eastern and western Maine remain in close proximity to the area where they were tagged throughout the following summer. The occurrence of a relatively large percentage of prespawning and postspawning adult herring in eastern Maine supports the belief that this area is an important spawning ground. The extremes in movement of herring reported in this study are from Point Judith, Rhode Island, to Sydney Bight, Nova Scotia.
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