ADJUSTABLE NATURAL CULLING OF MUSSEL POPULATION ON MUSSEL-CULTURE ROPES

摘要

A method for naturally culling mussel population on a mussel-culture rope, comprising the steps of installing a predator guard around the mussel-culture rope; and during the step of installing, adjusting a degree of mussel protection of that predator guard. In one aspect, the step of adjusting comprises the steps of opening and adjusting a size of a breach in the predator guard. In another aspect, the predator guard is made of an elongated hemicylindroidal mesh-like element with an open side. The hemicylindroidal element has flaps bordering the open side. The flaps constitute duck-mobility impediments for limiting without completely precluding predation by diving ducks.