Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae).
Knowledge of the life history of fish larvae is of practical importance to understand variations in the survival rate not only for cultivated fish but also for fishery biology studies. With the aim of recognizing critical changes during the first days of life of red porgy larvae, the oxygen consumption, growth, and food utilization were studied. After hatching, the larvae were transferred to two 400 L fiberglass tanks with microalgae (Nannochloropsis oculata)and enriched rotifers (Brachionus plicatilis)as initial food. During the incubation and larval rearing, water temperature was kept at 18.0 ± 0.5ºC and salinity ranged from 33.0 to 34.0 psu. Results indicate a decrease in larval growth between day 3 and 4 after hatching, when larvae opened their mouths, began exogenous feeding and have almost exhausted their yolk sac and oil globule. At the end of this period, variations in the carbon and nitrogen content were also detected. Oxygen consumption showed an isometric mass-specific change with an inflexion at day 6 after hatching, which was coincident with the inflation of the gas bladder and the development of gills. The nitrogen coefficient (NQ)revealed a sudden change in the utilization of amino acids and lipids from endogenous reserves between the embryo and the newly hatched larvae. Hatching and first feeding time are two critical changing moments for the larval survival of this species.
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Format: | Journal Contribution biblioteca |
Language: | Spanish / Castilian |
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Universidad de Valparaiso. Instituto de Oceanología
2006
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Subjects: | Fish culture, Metabolism, Fish larvae, Oxygen consumption, Marine fish, |
Online Access: | http://hdl.handle.net/1834/1557 |
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dig-aquadocs-1834-15572021-05-19T06:22:57Z Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). Oxygen consumption, growth and food utilization during the larval development of red porgy Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). Aristizabal, E.O. Fish culture Metabolism Fish larvae Oxygen consumption Fish culture Marine fish Fish larvae Metabolism Oxygen consumption Knowledge of the life history of fish larvae is of practical importance to understand variations in the survival rate not only for cultivated fish but also for fishery biology studies. With the aim of recognizing critical changes during the first days of life of red porgy larvae, the oxygen consumption, growth, and food utilization were studied. After hatching, the larvae were transferred to two 400 L fiberglass tanks with microalgae (Nannochloropsis oculata)and enriched rotifers (Brachionus plicatilis)as initial food. During the incubation and larval rearing, water temperature was kept at 18.0 ± 0.5ºC and salinity ranged from 33.0 to 34.0 psu. Results indicate a decrease in larval growth between day 3 and 4 after hatching, when larvae opened their mouths, began exogenous feeding and have almost exhausted their yolk sac and oil globule. At the end of this period, variations in the carbon and nitrogen content were also detected. Oxygen consumption showed an isometric mass-specific change with an inflexion at day 6 after hatching, which was coincident with the inflation of the gas bladder and the development of gills. The nitrogen coefficient (NQ)revealed a sudden change in the utilization of amino acids and lipids from endogenous reserves between the embryo and the newly hatched larvae. Hatching and first feeding time are two critical changing moments for the larval survival of this species. Published Sparidae, Pagrus pagrus, cultivo de peces, peces marinos, larvas de peces, metabolismo, consumo de oxígeno 2007-07-09T13:47:32Z 2007-07-09T13:47:32Z 2006 Journal Contribution Revista de biología marina y oceanografía, 41(2). p. 209-220 0717-3326 http://hdl.handle.net/1834/1557 es http://www.revbiolmar.cl/abstract.asp?Resumen=100&Edicion=13 DOAJ 361202 bytes application/pdf Universidad de Valparaiso. Instituto de Oceanología |
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Fish culture Metabolism Fish larvae Oxygen consumption Fish culture Marine fish Fish larvae Metabolism Oxygen consumption Fish culture Metabolism Fish larvae Oxygen consumption Fish culture Marine fish Fish larvae Metabolism Oxygen consumption |
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Fish culture Metabolism Fish larvae Oxygen consumption Fish culture Marine fish Fish larvae Metabolism Oxygen consumption Fish culture Metabolism Fish larvae Oxygen consumption Fish culture Marine fish Fish larvae Metabolism Oxygen consumption Aristizabal, E.O. Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). |
description |
Knowledge of the life history of fish larvae is of practical importance to understand variations in the survival rate not only for cultivated fish but also for fishery biology studies. With the aim of recognizing critical changes during the first days of life of red porgy larvae, the oxygen consumption, growth, and food utilization were studied. After hatching, the larvae were transferred to two 400 L fiberglass tanks with microalgae (Nannochloropsis oculata)and enriched rotifers (Brachionus plicatilis)as initial food. During the incubation and larval rearing, water temperature was kept at 18.0 ± 0.5ºC and salinity ranged from 33.0 to 34.0 psu. Results indicate a decrease in larval growth between day 3 and 4 after hatching, when larvae opened their mouths, began exogenous feeding and have almost exhausted their yolk sac and oil globule. At the end of this period, variations in the carbon and nitrogen content were also detected. Oxygen consumption showed an isometric mass-specific change with an inflexion at day 6 after hatching, which was coincident with the inflation of the gas bladder and the development of gills. The nitrogen coefficient (NQ)revealed a sudden change in the utilization of amino acids and lipids from endogenous reserves between the embryo and the newly hatched larvae. Hatching and first feeding time are two critical changing moments for the larval survival of this species. |
format |
Journal Contribution |
topic_facet |
Fish culture Metabolism Fish larvae Oxygen consumption Fish culture Marine fish Fish larvae Metabolism Oxygen consumption |
author |
Aristizabal, E.O. |
author_facet |
Aristizabal, E.O. |
author_sort |
Aristizabal, E.O. |
title |
Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). |
title_short |
Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). |
title_full |
Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). |
title_fullStr |
Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). |
title_full_unstemmed |
Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). |
title_sort |
consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo pagrus pagrus (linné, 1758)(pisces:sparidae). |
publisher |
Universidad de Valparaiso. Instituto de Oceanología |
publishDate |
2006 |
url |
http://hdl.handle.net/1834/1557 |
work_keys_str_mv |
AT aristizabaleo consumodeoxigenocrecimientoyutilizaciondelalimentoduranteeldesarrollolarvaldelbesugopagruspagruslinne1758piscessparidae AT aristizabaleo oxygenconsumptiongrowthandfoodutilizationduringthelarvaldevelopmentofredporgypagruspagruslinne1758piscessparidae |
_version_ |
1756075382722789376 |