Transplantation of the Sea Urchin <I>Loxechinus albus</I> in Chiloé Island, Chile

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  • チリ共和国チロエ島におけるチリウニ <I>Loxechinus albus</I> の移植
  • Transplantation of the sea urchin Loxechinus albus in Chiloe Island, Chile

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Abstract

In order to understand methods to effectively utilize the resource of the Chilean sea urchin, Loxechinus albus, a transplantation experiment was carried out during 6 months from August 1988 to February 1989 in Chiloé Island, Chile. One thousand adults at 58.6 mm in mean test diameter showing mal-developed gonads in Linao which was depauperate in algae were transplanted to an experimental area of 400 m2 in Hueihue which was rich in algae. The gonad index improved from 8.5 to 13.7 two months after transplantation. The recovery rate of transplanted L. albus after 6 months was 83.0% (90.4% including sampled individuals). The movement range of this species was very narrow. In Linao, L. albus barely gathered to algae put in a net bag; the numbers that gathered were 2, 10, 15, and 20 individuals in 4, 8, 15, and 21 days after providing algae, respectively.

Journal

  • Aquaculture Science

    Aquaculture Science 58 (1), 55-63, 2010

    Japanese Society for Aquaculture Science

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