Translocation of Wild Trochus niloticus : Prospects for Enhancing Depleted Philippine Reefs

Dolorosa, Roger G., Grant, Alastair and Gill, Jennifer A. (2013) Translocation of Wild Trochus niloticus : Prospects for Enhancing Depleted Philippine Reefs. Reviews in Fisheries Science, 21 (3-4). pp. 403-413. ISSN 1064-1262

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Abstract

Intentional release of wild-caught individuals has been widely used to establish new populations of the commercially valuable but threatened reef gastropod Trochus niloticus in oceanic islands. Is this also a viable strategy to enhance depleted populations of this species and other marine invertebrates? We monitored growth and survival of 765 translocated individuals and 486 in their original habitat for 5–9 months. Individuals translocated to a severely overexploited reef (mainland Palawan) grew 2–3 times faster than those at Tubbataha Reefs Natural Park, Phillipines. Despite variations in growth between the three sites, survival probabilities were consistently high, ranging between 0.77 and 0.92. So translocation is feasible, and sites at which a species has previously been found are likely to be suitable for their growth and survival. If site management can control over-fishing, this approach is likely to be a valuable tool for enhancing field populations of a large invertebrates like Trochus that have a short lived planktonic larva.

Item Type: Article
Uncontrolled Keywords: growth,marine protected areas,reintroduction,survival rates
Faculty \ School: Faculty of Science > School of Environmental Sciences
Faculty of Science > School of Biological Sciences
Depositing User: Pure Connector
Date Deposited: 04 Dec 2013 10:18
Last Modified: 28 Oct 2019 15:48
URI: https://ueaeprints.uea.ac.uk/id/eprint/45428
DOI: 10.1080/10641262.2013.800773

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