BOSTON (AP) — New England's lobster fishing industry is again facing the possibility of a bait shortage, and ocean managers are looking to make some tweaks to the herring fishery.

The lobster and herring fisheries are tied to each other because herring is the preferred bait for lobster traps. But fishermen in Maine, New Hampshire and Massachusetts have sometimes had trouble getting enough bait in recent summers.

An arm of the Atlantic States Marine Fisheries Commission changed some of the rules about herring fishing off of New England starting on Monday. The rules have to do with how many days herring fishermen can operate, and how much fish they can bring to land.

The commission says the new rules are projected to keep the herring fishery going through the end of August.