Abstract: The morphology and microstructure of mantle were described in 2 year old yesso scallopPatinopectenyessoensiswith different color shell, ordinary yesso scallop and “Ivory” strains of yesso scallop. It was found that the mantle of yesso scallop had a typical bivalve mantle characteristics, more black streaks on the free end of left shell mantle than on the right shell with different shell color, and more black streaks on the free end of mantle with ordinary yesso scallop than “Ivory” strains. There were no pigment granules in shell protuberances on mantles in yesso scallop with different color shells, and only a large number of brown pigment granules were distributed in the epidermal cells of velum protuberance and sensory protuberance on the black streaks in mantle, a few pigment granules in the epidermal cell of sensory protuberance in free black streaks in mantle. It is speculated that velum protuberance and sensory protuberance are involved in pigment deposition in shell color. The findings will provide some evidence for the mechanism of shell color formation.
2014, Vol. 29 
