Restoring caribbean reefs, one spine at a time : The culture and rearing of the long-spined sea urchin, Diadema antillarum for restocking
Year: 2025
Type: dissertation
Abstract: Tropical coral reefs are under serious threat, especially in the Caribbean, where hard coral cover has dropped sharply in recent decades. A major reason is the loss of natural grazers that keep algae and seaweed in check. One key grazer, the long-spined sea urchin (Diadema antillarum), has nearly disappeared due to two recent disease events. My PhD research focused on helping restore these urchins to boost reef health. I developed the first successful method to raise their larvae in the lab, tested what substrate the larvae prefer to settle on, grew juveniles for reef restocking, and used cryopreservation to save biological material for future efforts. These results make it possible to actively restore this vital species and support the recovery of Caribbean coral reefs.
DOI: 10.18174/681925
Author: Tom Wijers
Institution: Wageningen University & Research
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
SDG: Life below water
Open Access status: green
OpenAlex ID: W4411809481