Article: Evaluation of growth and survival of juveniles of the Japanese abalone Haliotis discus hannai in two culture systems suspended in tanks.(Report)

ABSTRACT Growth and survival of the Japanese abalone Haliotis discus hannai were studied over a six-month period at the Center for Abalone Production, Universidad Catolica del Norte, Coquimbo, Chile. Cultures were carried out in lantern and basket nets suspended in seawater tanks having a constant flow of fresh seawater from La Herradura Bay. A total of 900 juveniles were observed, starting with individuals having an average length of 20 mm. The abalone juveniles were fed with two species of macroalgae, half of which was Gracilaria chilensis, and the other was half Ulva sp (mass basis), fed ad libitum. Artificial pelletized food was fed as a supplement, at a rate of 2% of ...

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