Restoring depleted coral-reef fish populations through recruitment enhancement: a proof of concept
Research output: Contribution to journal › Article › peer-review
Electronic versions
DOI
To determine whether enhancing the survival of new recruits is a sensible target for the restorative management of depleted coral-reef fish populations, settlement-stage ambon damsel fish Pomacentrus amboinensis were captured, tagged and then either released immediately onto small artificial reefs or held in aquaria for 1 week prior to release. Holding conditions were varied to determine whether they affected survival of fish: half the fish were held in bare tanks (non-enriched) and the other half in tanks containing coral and sand (enriched). Holding fish for this short period had a significantly positive effect on survivorship relative to the settlement-stage treatment group that were released immediately. The enrichment of holding conditions made no appreciable difference on the survival of fish once released onto the reef. It did, however, have a positive effect on the survival of fish while in captivity, thus supporting the case for the provision of simple environmental enrichment in fish husbandry. Collecting and holding settlement-stage fish for at least a week before release appear to increase the short-term survival of released fish; whether it is an effective method for longer-term enhancement of locally depleted coral-reef fish populations will require further study.
Keywords
- Animals, Body Size, Coral Reefs, Environmental Restoration and Remediation, Perciformes, Survival Analysis, Journal Article, Research Support, Non-U.S. Gov't
Original language | English |
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Pages (from-to) | 1857-67 |
Number of pages | 11 |
Journal | Journal of Fish Biology |
Volume | 75 |
Issue number | 7 |
DOIs | |
Publication status | Published - Nov 2009 |
Externally published | Yes |