Bioeconomic modeling of optimal harvest time in Nile tilapia (Oreochromis niloticus) considering size heterogeneity and minimum marketable size

dc.contributorNational Science and Technology Council (CONACYT)en-US
dc.creatorBorrego-Kim, Patricia
dc.creatorDomínguez-May, Roger
dc.creatorMonroy-Borrego, Andrea G.
dc.creatorGullian-Klanian, Mariel
dc.date2020-09-01
dc.date.accessioned2023-09-26T18:22:36Z
dc.date.available2023-09-26T18:22:36Z
dc.identifierhttps://www.lajar.cl/index.php/rlajar/article/view/vol48-issue4-fulltext-2526
dc.identifier10.3856/vol48-issue4-fulltext-2526
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8847760
dc.descriptionSize dispersion in farmed fish has a substantial impact on production's bioeconomic performance, directly affecting net profits. This work's objective was to develop a bioeconomic model based on experimental data to identify the optimal harvest time (OHT) for Nile tilapia Oreochromis niloticus. The bioeconomic model considered four minimum marketable sizes (Mms = 350, 400, 450, and 500 g). Organisms were selected by size with different coefficients of variation (CV). Therefore, they were reared under two growth strategies: heterogeneous size (HT = 44-155 g; CV 25.5%) and homogeneous size (HM = 87-112 g; CV 5.9%). The HT system-generated tradable biomass of 99.30% in an OHT of 196 days with a net profit of USD 3,551.61 and a Mms of 350 g. However, the HM system achieved greater marketable biomass (99.53%) in less time (OHT = 181 days) with a net profit of USD 3,327.96 for the same Mms. The Mms of 500 g had the lowest net benefit in both systems. The HM strategy earned an additional 10.66% of incomes, indicating that the reduction in size dispersion positively impacted profits. The developed model provides a new perspective regarding the management of heterogeneity and size homogeneity in commercial production of Nile tilapia in intensive systems.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherPontificia Universidad Católica de Valparaísoen-US
dc.relationhttps://www.lajar.cl/index.php/rlajar/article/view/vol48-issue4-fulltext-2526/1261
dc.rightsCopyright (c) 2020 Latin American Journal of Aquatic Researchen-US
dc.sourceLatin American Journal of Aquatic Research; Vol 48, No 4 (2020); 602-612en-US
dc.sourcePlataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 48, No 4 (2020); 602-612es-ES
dc.source0718-560X
dc.source0718-560X
dc.subjectOreochromis niloticus; tilapia; bioeconomic; size heterogeneity; optimal harvest time; aquacultureen-US
dc.titleBioeconomic modeling of optimal harvest time in Nile tilapia (Oreochromis niloticus) considering size heterogeneity and minimum marketable sizeen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US
dc.typees-ES


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