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Growth And Spawning Characteristics Of The Sea Scallop, Placopecten Magellanicus (Gmelin), Walter R. Welch

Electronic Theses and Dissertations

Anatomical studies of Placopecten magellanicus agreed with previous investigations, except that a crystalline style was found, but only in fresh specimens. Ring mesh size of the dredge controlled relative frequency of size classes in commercial dredging, which yielded 97.7 per cent commercial sizes. Growth was most rapid during the first five years and slowest after the seventh. The minimum size for commercial utilization was about 80 millimeters, attained at about four years. The commercial catch was 60-8 per cent composed of ages up through seven years and 38.8 per cent composed of ages up through five. Maximum age was over …