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Approaches to stock enhancement in mangrove-associated crab fisheries

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Date
2008
Author
Le Vay, Lewis
Lebata, Ma. Junemie Hazel L.
Walton, Mark
Primavera, Jurgenne H.
Quinitio, Emilia T.
Lavilla, Celia R.
Parado-Estepa, Fe D.
Rodriguez, Eduard
Ut, Vu Ngoc
Nghia, Truong Trong
Sorgeloos, Patrick
Wille, Mathieu
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Abstract
Over the last decade, hatchery production of mud crabs has become technically and economically more feasible, enabling evaluation of the potential effectiveness of hatchery release in fisheries enhancement. The high growth rates and limited movement of released crabs means that fisheries’ yields an isolated mangrove systems with restricted recruitment can be enhanced with a few months. Thus, a release program may be an effective strategy for short-term enhancement in carefully selected specific areas. To date, results are very promising; with recovery rates up to 50% and increases in fisheries’ yield up to 46% over baseline catches. In contrast, mark-recapture studies in more open mangrove system populations shows that recruitment success and subsequent stock abundance may be largely determined by habitat availability. For these populations, restoration of lost o degraded mangrove areas has been show to be effective in promoting stock recovery through natural recruitment, with replanted mangroves supporting fisheries of equivalent economic value to that of natural mangroves, though it may take some years to reach these levels. Thus, a balanced approach to stock management could integrate both hatchery-release and habitat restoration programs, depending on local conditions and over different thin scales, with parallel-co-management to support effectiveness.
Description
non-SEAFDEC main author, ISI-CC covered journal.
URI
http://hdl.handle.net/10862/32
Suggested Citation
Le Vay, L., Lebata, M. J. H. L., Walton, M., Primavera, J. H., Quinitio, E. T., Lavilla, C. R., ... & Wille, M. (2008). Approaches to stock enhancement in mangrove-associated crab fisheries. Reviews in Fisheries Science, 16(1-3), 78-80.
Subject
Crab fisheries; Fishery management; Growth rate; Habitat improvement; Mangroves; Potential resources; Recruitment; Tracking; Hatcheries; Decapoda; Scylla; Mud crabs; Replanting
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  • AQD [1108]

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