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Article: Successful stock enhancement of a lagoon prawn fishery at Rekawa, Sri Lanka using cultured post-larvae of penaeid shrimp

TitleSuccessful stock enhancement of a lagoon prawn fishery at Rekawa, Sri Lanka using cultured post-larvae of penaeid shrimp
Authors
KeywordsArtisanal Fishing
Lagoon
Penaeids
Penaeus Monodon
Stock Enhancement
Tagging
Issue Date1999
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/aquaculture
Citation
Aquaculture, 1999, v. 180 n. 1-2, p. 65-78 How to Cite?
AbstractRekawa Lagoon, Sri Lanka (area 250 ha) has an artisanal fishery for penaeid shrimp, predominantly Penaeus indicus (93.6% of catch), but with small numbers (0.8%) of Penaeus monodon. Neither species breeds in the lagoon; larvae and post-larvae enter the lagoon: during brief periods in July and November (P. indicus) or just November (Pen. monodon) when a sand bar blocking the lagoon entrance is breached. Detailed information on fishery characteristics was collected during the fishing season of 1995-1996. The P. indicus fishery began in October, peaked in February and was over by late April/early May; while Pen. monodon was only caught from March to early May. The fishery was extremely intensive, removing virtually all shrimp by early May. In the light of these data, two stock enhancement exercises were carried out with Pen. monodon post-larvae in July 1996 (55,000 post-larvae) and July 1997 (70,000 post-larvae). These led subsequently to commercial catches of Pen. monodon from September to January (roughly 6 months out of phase with the natural fishery) in both years. Total catch in 1996-1997 represented 3.5% of the number of post-larvae released. In 1996-1997, the total shrimp catch was worth 33% more than in 1995-1996, while the annual Pen. monodon catch was enhanced by 1400%. Economic analysis and scenario modelling were used to evaluate the biological and economic feasibility of more intensive stock enhancement. This study represents an ecologically and economically sustainable penaeid stock enhancement approach by which shrimp aquaculture and artisanal fishing can co-exist.
Persistent Identifierhttp://hdl.handle.net/10722/180767
ISSN
2015 Impact Factor: 1.893
2015 SCImago Journal Rankings: 1.110
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDavenport, Jen_US
dc.contributor.authorEkaratne, SUKen_US
dc.contributor.authorWalgama, SAen_US
dc.contributor.authorLee, Den_US
dc.contributor.authorHills, JMen_US
dc.date.accessioned2013-01-28T01:43:07Z-
dc.date.available2013-01-28T01:43:07Z-
dc.date.issued1999en_US
dc.identifier.citationAquaculture, 1999, v. 180 n. 1-2, p. 65-78en_US
dc.identifier.issn0044-8486en_US
dc.identifier.urihttp://hdl.handle.net/10722/180767-
dc.description.abstractRekawa Lagoon, Sri Lanka (area 250 ha) has an artisanal fishery for penaeid shrimp, predominantly Penaeus indicus (93.6% of catch), but with small numbers (0.8%) of Penaeus monodon. Neither species breeds in the lagoon; larvae and post-larvae enter the lagoon: during brief periods in July and November (P. indicus) or just November (Pen. monodon) when a sand bar blocking the lagoon entrance is breached. Detailed information on fishery characteristics was collected during the fishing season of 1995-1996. The P. indicus fishery began in October, peaked in February and was over by late April/early May; while Pen. monodon was only caught from March to early May. The fishery was extremely intensive, removing virtually all shrimp by early May. In the light of these data, two stock enhancement exercises were carried out with Pen. monodon post-larvae in July 1996 (55,000 post-larvae) and July 1997 (70,000 post-larvae). These led subsequently to commercial catches of Pen. monodon from September to January (roughly 6 months out of phase with the natural fishery) in both years. Total catch in 1996-1997 represented 3.5% of the number of post-larvae released. In 1996-1997, the total shrimp catch was worth 33% more than in 1995-1996, while the annual Pen. monodon catch was enhanced by 1400%. Economic analysis and scenario modelling were used to evaluate the biological and economic feasibility of more intensive stock enhancement. This study represents an ecologically and economically sustainable penaeid stock enhancement approach by which shrimp aquaculture and artisanal fishing can co-exist.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/aquacultureen_US
dc.relation.ispartofAquacultureen_US
dc.subjectArtisanal Fishingen_US
dc.subjectLagoonen_US
dc.subjectPenaeidsen_US
dc.subjectPenaeus Monodonen_US
dc.subjectStock Enhancementen_US
dc.subjectTaggingen_US
dc.titleSuccessful stock enhancement of a lagoon prawn fishery at Rekawa, Sri Lanka using cultured post-larvae of penaeid shrimpen_US
dc.typeArticleen_US
dc.identifier.emailEkaratne, SUK: suki1@hku.hken_US
dc.identifier.authorityEkaratne, SUK=rp01695en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0044-8486(99)00141-6en_US
dc.identifier.scopuseid_2-s2.0-0033215551en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033215551&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume180en_US
dc.identifier.issue1-2en_US
dc.identifier.spage65en_US
dc.identifier.epage78en_US
dc.identifier.isiWOS:000082445000006-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridDavenport, J=7102649840en_US
dc.identifier.scopusauthoridEkaratne, SUK=7801627869en_US
dc.identifier.scopusauthoridWalgama, SA=6504536003en_US
dc.identifier.scopusauthoridLee, D=26663690500en_US
dc.identifier.scopusauthoridHills, JM=7102938460en_US

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