| dc.contributor | National Science and Technology Council (CONACYT) | en-US |
| dc.creator | Borrego-Kim, Patricia | |
| dc.creator | Domínguez-May, Roger | |
| dc.creator | Monroy-Borrego, Andrea G. | |
| dc.creator | Gullian-Klanian, Mariel | |
| dc.date | 2020-09-01 | |
| dc.date.accessioned | 2020-11-05T13:36:47Z | |
| dc.date.available | 2020-11-05T13:36:47Z | |
| dc.identifier | http://lajar.ucv.cl/index.php/rlajar/article/view/vol48-issue4-fulltext-2526 | |
| dc.identifier | 10.3856/vol48-issue4-fulltext-2526 | |
| dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/159274 | |
| dc.description | Size 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.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Pontificia Universidad Católica de Valparaíso | en-US |
| dc.relation | http://lajar.ucv.cl/index.php/rlajar/article/view/vol48-issue4-fulltext-2526/1261 | |
| dc.rights | Copyright (c) 2020 Latin American Journal of Aquatic Research | en-US |
| dc.source | Latin American Journal of Aquatic Research; Vol 48, No 4 (2020); 602-612 | en-US |
| dc.source | Plataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 48, No 4 (2020); 602-612 | es-ES |
| dc.source | 0718-560X | |
| dc.source | 0718-560X | |
| dc.subject | Oreochromis niloticus; tilapia; bioeconomic; size heterogeneity; optimal harvest time; aquaculture | en-US |
| dc.title | Bioeconomic modeling of optimal harvest time in Nile tilapia (Oreochromis niloticus) considering size heterogeneity and minimum marketable size | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | | en-US |
| dc.type | | es-ES |
