宮城県志津川湾におけるマゴコロガイ（二枚貝綱：ウロコガイ上科）の初記録

抄録

Peregrinamor ohshimai is a symbiotic bivalve associated with upogebiid mud shrimp, typically distributed along the Pacific coast of Japan, from Ibaraki Prefecture to Kumamoto Prefecture. During a survey conducted by high school students, a specimen of P. ohshimai was found attached to Upogebia yokoyai in Shizugawa Bay, Miyagi Prefecture. This finding extends the known distribution of P. ohshimai to northern Japan.