Show simple item record

Share 
 
dc.contributor.authorPrimavera, Jurgenne
dc.contributor.authorBinas, Joseph B.
dc.contributor.authorSamonte-Tan, Giselle P. B.
dc.contributor.authorLebata, Ma. Junemie J.
dc.contributor.authorAlava, Veronica R.
dc.contributor.authorWalton, Mark
dc.contributor.authorLeVay, Lewis
dc.date.accessioned2013-04-24T10:02:46Z
dc.date.available2013-04-24T10:02:46Z
dc.date.issued2010
dc.identifier.citationPrimavera, J. H., Binas, J. B., Samonte-Tan, G. P. B., Lebata, M. J. J., Alava, V. R., Walton, M., & Le Vay, L. (2010). Mud crab pen culture: replacement of fish feed requirement and impacts on mangrove community structure. Aquaculture Research, 41(8), 1211–1220.en
dc.identifier.issn1365-2109
dc.identifier.urihttp://hdl.handle.net/10862/1608
dc.description.abstractBrackishwater pond culture has been a major factor in mangrove loss in Southeast Asia, hence, the need to develop environment-friendly technologies such as mud crab Scylla (Portunidae) culture in mangrove pens exists. This study evaluated the effects of mud crab netpen systems in central Philippines on mangrove macroflora, and the replacement of dietary fish with low-cost pellets. Wild or hatchery-sourced Scylla olivacea and Scylla serrata were stocked at 0.5–0.8 m-2 in 167–200 m2 nylon netpens (2.3 cm stretched mesh) in Avicennia-dominated mangrove habitats. The feeding treatments were: (A) Zarraga: (1) no feeding (natural productivity), (2) no feeding for 1 month+supplementary feeding, (3) fish biomass and (4) low-cost pellets, and (B) Batan: (1) fish biomass and (2) pellets+fish biomass. Feeds were given ad libitum twice daily. Growth and survival rates of S. olivacea in Zarraga pens were not significantly different among treatments, although crabs fed fish biomass had the highest survival, body weight and production. Similarly, growth and survival of S. serrata were not significantly different between the Batan treatments. Economic analysis of the latter gave a 38.5% return on investment (ROI) and 2.6 years payback period (PP) for pellets+fish biomass treatment compared with 27.5% ROI and 3.6 years PP for fish alone. Sensitivity analysis showed an improved economic performance of the pellets+fish biomass treatment by increasing the survival rate. Evaluation of mangrove community structure showed that crab culture reduced species diversity, numbers and biomass of seedlings and saplings, but not of mangrove trees. Therefore, mud crab pen culture is recommended for mangrove sites with mature trees, but not seedlings and saplings, and low-cost pellets can reduce dependence on fish biomass.en
dc.description.sponsorshipThis study was part of the Project on the Culture and Management of Scylla species funded by the European Commission (EC-CAMS). We acknowledge the assistance of the local governments of Batan Municipality and Napti Barangay (Village) through Barangay Head Ray Matias and the Napti Multipurpose Cooperative in Aklan Province, and the pens made available by the Bureau of Fisheries and Aquatic Resources, Region 6.en
dc.language.isoenen
dc.publisherBlackwell Publishingen
dc.subjectScylla serrataen
dc.subjectScylla olivaceaen
dc.subjectPortunidaeen
dc.subjectDecapodaen
dc.subjectPhilippinesen
dc.subjectScyllaen
dc.titleMud crab pen culture: replacement of fish feed requirement and impacts on mangrove community structureen
dc.typeArticleen
dc.citation.volume41
dc.citation.issue8
dc.citation.spage1211
dc.citation.epage1220
dc.citation.journalTitleAquaculture Researchen
dc.subject.asfabottom cultureen
dc.subject.asfacage cultureen
dc.subject.asfacommunity compositionen
dc.subject.asfacrab fisheriesen
dc.subject.asfaenvironmental impacten
dc.subject.asfamangrovesen
dc.subject.asfapond cultureen
dc.identifier.doi10.1111/j.1365-2109.2009.02408.x
dc.subject.scientificNameScylla serrataen


Files in this item

FilesSizeFormatView

This item appears in the following Collection(s)

  • AQD Journal Articles [1213]
    These papers were contributed by AQD staff to various national and international journals

Show simple item record