Effects of soaking in Arginine or Ornithine immediately after conchospores adhere to substrate in adherence strength and growth of Neopyropia yezoensis

Abstract

In order to clarify the soaking effects of arginine and ornithine solutions to conchospores of Neopyropia yezoensis, the adherence strength for preventing losses and the growth for increasing yield of thalli were examined with laboratory culture experiments and field aquaculture trials, respectively. From the results of laboratory cultures, the adherence strength with soaking in ornithine for 1 hour or more were enhanced. From the results of field aquaculture trials, the enhances of the adherence strength and the growth promoting were showed with soaking in arginine and ornithine. Additionally, yields with soaking in arginine and ornithine increased by more than 10% per net a day. It was considered that the just once soaking in arginine or ornithine at the time of seedling collection, not only can contribute the enhance of the adherence strength for preventing thalli losses, but also can the increase of yields of lavers.