Assisted Nature Recovery: A Novel Approach to Enhance Diadema antillarum Recruitment

The massive die-off of hte sea urchin Diademan antillarum in 1983-1984 is one of the main reasons for low coral recuirtmenat and little coral recovery in the Caribbean. As the natural recovery of D. antillarum is slow to non-existent, multiple restoration studies have been attempted. There are currently three different approaches to obtain individuals for restocking: the translocation of wild-collected juveniles or adults, lab-reared juveniles cultured from wild=collected settlers, or lab-reared juveniles cultured from gametes. All three methods are costly and can only be applied on a relatively small scale.  We propose a fourth, new, approach, which we term assisted natural recovery (ANR) of D. antillarum populations.

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