Nacre growth and thickness of Akoya pearls from Japanese and Hybrid Pinctada fucata in response to the aquaculture temperature condition in Ago Bay, Japan

This study examines whole nacre thickness and monthly growth of pearls of Akoya pearl oyster, Pinctada fucata , which came from Japanese and hybrid strains and relate them to the water temperature of the aquaculture site in Ago Bay. Whole nacre thickness of the pearls was significantly different between Japanese and Hybrid strains (Student's t -test, p -value t -test, p -value t -test, p -value Statement of relevance The findings of this study will redound to the benefit of commercial aquaculture of pearl oyster in the world generally, and in Japan especially considering that cultured pearl is one of the important aquaculture products in Japan and some other Countries.