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Article: Aggregations of Plectropomus areolatus and Epinephelus fuscoguttatus (groupers, Serranidae) in the Komodo National Park, Indonesia: Monitoring and implications for management

TitleAggregations of Plectropomus areolatus and Epinephelus fuscoguttatus (groupers, Serranidae) in the Komodo National Park, Indonesia: Monitoring and implications for management
Authors
KeywordsAggregation
Coral reef
Marine protected area
Reef fish
Reproduction
Spawning
Issue Date2005
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0378-1909
Citation
Environmental Biology Of Fishes, 2005, v. 74 n. 2, p. 209-218 How to Cite?
AbstractWe identify fishery management implications from a long-term monitoring program focusing on spawning aggregations of high valued reef fish in Komodo National Park (KNP), Eastern Indonesia. Management objectives of KNP are not only to protect biodiversity, but also to conserve spawning stocks of high-valued commercial species for the replenishment of surrounding fishing grounds. We monitored two sites twice monthly over five years for two species of grouper, Epinephelus fuscoguttatus and Plectropomus areolatus. One site had an aggregation of both E. fuscoguttatus and P. areolatus, whereas the other site contained an aggregation of P. areolatus only. Over the five years monitoring period, aggregations typically formed during each full moon between September and February. Additionally, P. areolatus occasionally aggregated during new moons between April and July. We observed spawning only once, but because formation of aggregations were correlated to a higher incidence of behavior and signs indicative of reproduction and because most fish present were adults, it is likely that the formation of aggregations was associated with spawning. Over the five years monitoring period there was a reduction in mean fish size of up to 8 cm for P. areolatus, and a reduction in numbers of aggregating E. fuscoguttatus. Despite limited protection initiated in 2001, both sites are still heavily fished by local artisanal fishers. Because the observed reductions in size and in numbers could be caused by fishing pressure, managers should follow the precautionary principle by putting additional protective management in place. Since both species are relatively long-lived, at least five years of continued monitoring may be necessary to determine the outcome of management intervention. The variability in timing of aggregation in respect to season and moon phase in P. areolatus indicates that long-term monitoring must cover the entire year and both moon phases. © Springer 2005.
Persistent Identifierhttp://hdl.handle.net/10722/73461
ISSN
2015 Impact Factor: 1.404
2015 SCImago Journal Rankings: 0.734
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPet, JSen_HK
dc.contributor.authorMous, PJen_HK
dc.contributor.authorMuljadi, AHen_HK
dc.contributor.authorSadovy, YJen_HK
dc.contributor.authorSquire, Len_HK
dc.date.accessioned2010-09-06T06:51:28Z-
dc.date.available2010-09-06T06:51:28Z-
dc.date.issued2005en_HK
dc.identifier.citationEnvironmental Biology Of Fishes, 2005, v. 74 n. 2, p. 209-218en_HK
dc.identifier.issn0378-1909en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73461-
dc.description.abstractWe identify fishery management implications from a long-term monitoring program focusing on spawning aggregations of high valued reef fish in Komodo National Park (KNP), Eastern Indonesia. Management objectives of KNP are not only to protect biodiversity, but also to conserve spawning stocks of high-valued commercial species for the replenishment of surrounding fishing grounds. We monitored two sites twice monthly over five years for two species of grouper, Epinephelus fuscoguttatus and Plectropomus areolatus. One site had an aggregation of both E. fuscoguttatus and P. areolatus, whereas the other site contained an aggregation of P. areolatus only. Over the five years monitoring period, aggregations typically formed during each full moon between September and February. Additionally, P. areolatus occasionally aggregated during new moons between April and July. We observed spawning only once, but because formation of aggregations were correlated to a higher incidence of behavior and signs indicative of reproduction and because most fish present were adults, it is likely that the formation of aggregations was associated with spawning. Over the five years monitoring period there was a reduction in mean fish size of up to 8 cm for P. areolatus, and a reduction in numbers of aggregating E. fuscoguttatus. Despite limited protection initiated in 2001, both sites are still heavily fished by local artisanal fishers. Because the observed reductions in size and in numbers could be caused by fishing pressure, managers should follow the precautionary principle by putting additional protective management in place. Since both species are relatively long-lived, at least five years of continued monitoring may be necessary to determine the outcome of management intervention. The variability in timing of aggregation in respect to season and moon phase in P. areolatus indicates that long-term monitoring must cover the entire year and both moon phases. © Springer 2005.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0378-1909en_HK
dc.relation.ispartofEnvironmental Biology of Fishesen_HK
dc.subjectAggregationen_HK
dc.subjectCoral reefen_HK
dc.subjectMarine protected areaen_HK
dc.subjectReef fishen_HK
dc.subjectReproductionen_HK
dc.subjectSpawningen_HK
dc.titleAggregations of Plectropomus areolatus and Epinephelus fuscoguttatus (groupers, Serranidae) in the Komodo National Park, Indonesia: Monitoring and implications for managementen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0378-1909&volume=74&spage=209&epage=218&date=2005&atitle=Aggregations+of+Plectropomus+areolatus+and+Epinephelus+fuscoguttatus+(groupers,+Serranidae)+in+the+Komodo+National+Park,+Indonesia:+monitoring+and+implications+for+managementen_HK
dc.identifier.emailSadovy, YJ: yjsadovy@hkucc.hku.hken_HK
dc.identifier.authoritySadovy, YJ=rp00773en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s10641-005-8528-8en_HK
dc.identifier.scopuseid_2-s2.0-27744544232en_HK
dc.identifier.hkuros121167en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-27744544232&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume74en_HK
dc.identifier.issue2en_HK
dc.identifier.spage209en_HK
dc.identifier.epage218en_HK
dc.identifier.isiWOS:000233240400011-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridPet, JS=6602755233en_HK
dc.identifier.scopusauthoridMous, PJ=6506010380en_HK
dc.identifier.scopusauthoridMuljadi, AH=6504802321en_HK
dc.identifier.scopusauthoridSadovy, YJ=6603830002en_HK
dc.identifier.scopusauthoridSquire, L=7102968154en_HK
dc.identifier.citeulike393534-

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