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dc.contributor.authorLebata, Ma. Junemie Hazel L.
dc.contributor.authorLe Vay, Lewis
dc.contributor.authorWalton, Mark E.
dc.contributor.authorBiñas, Joseph B.
dc.contributor.authorQuinitio, Emilia T.
dc.contributor.authorRodriguez, Eduard M.
dc.contributor.authorPrimavera, Jurgenne H.
dc.date.accessioned2014-05-27T01:13:09Z
dc.date.available2014-05-27T01:13:09Z
dc.date.issued2009
dc.identifier.citationLebata, M. J. H. L., Le Vay, L., Walton, M. E., Biñas, J. B., Quinitio, E. T., Rodriguez, E. M., & Primavera, J. H. (2009). Evaluation of hatchery-based enhancement of the mud crab, Scylla spp., fisheries in mangroves: comparison of species and release strategies. Marine and Freshwater Research, 60(1), 58-69.en
dc.identifier.issn1323-1650
dc.identifier.urihttp://hdl.handle.net/10862/2095
dc.description.abstractRanching, stock enhancement and restocking are management approaches involving the release of wild or hatchery-bred organisms to enhance, conserve or restore fisheries. The present study, conducted from April 2002 to November 2005, evaluated the effectiveness of releasing wild and hatchery-reared (HR) mud crabs in the mangroves of Ibajay, Aklan, Philippines where preliminary studies demonstrated declining fishery yields, abundance and size of crabs. Comparison of survival and growth of wild-released and HR Scylla olivacea and HR Scylla serrata demonstrated the effect of nursery conditioning, size-at-release and species differences. Overall yield and catch per unit effort (CPUE) increased by 46% after stock enhancement trials. Recapture rates of released crabs were highest in wild-released S. olivacea and in crabs measuring 65.0–69.9 mm carapace width (CW) and lowest in non-conditioned HR S. serrata. Growth rates were highest for conditioned HR S. olivacea and lowest for conditioned HR S. serrata (11.7 and 3.7 mm month-1 respectively). Fishing mortality was highest for S. olivacea, whereas natural mortality was greater for S. serrata. Conditioning hatchery-bred animals before release is also important in obtaining higher survival. S. olivacea was the more appropriate of the two species for release in mangrove habitats inundated with low-salinity water. However, there is a need for site-specific studies to evaluate the effectiveness of releases.en
dc.language.isoenen
dc.publisherCSIRO Publishingen
dc.subjectDecapoda
dc.subjectScylla
dc.subjectScylla serrata
dc.subjectScylla olivacea
dc.titleEvaluation of hatchery-based enhancement of the mud crab, Scylla spp., fisheries in mangroves: comparison of species and release strategiesen
dc.typeArticleen
dc.citation.volume60
dc.citation.issue1
dc.citation.spage58
dc.citation.epage69
dc.citation.journalTitleMarine and Freshwater Researchen
dc.subject.asfaHatcheriesen
dc.subject.asfaGrowth rateen
dc.subject.asfaStocking (organisms)en
dc.subject.asfaCrab fisheriesen
dc.subject.asfaNursery groundsen
dc.subject.asfaDepleted stocksen
dc.subject.asfaMarine crustaceansen
dc.subject.asfaMangrovesen
dc.subject.asfaFishingen
dc.subject.asfaMortalityen
dc.subject.asfaAbundanceen
dc.subject.asfaFisheriesen
dc.subject.asfaSurvivalen
dc.subject.asfaHabitaten
dc.subject.asfaRanchingen
dc.subject.asfaMuden
dc.subject.asfaFishingen
dc.identifier.essn1448-6059
dc.identifier.doi10.1071/MF08155


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  • AQD [1129]
    These papers were contributed by AQD staff to various national and international journals

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