Evaluación de la calidad del agua de mar en la desembocadura del río Manta y sus efectos en la supervivencia de larvas de camarón blanco (Litopenaeus Vannamei)
Evaluation of the quality of sea water in the disbursement of the Manta river and its effects on the survival of larvae white shrimp (Litopenaeus Vannamei)
| dc.creator | Pico-Lozano, Eduardo | |
| dc.creator | Mendoza-Intriago, Manuel | |
| dc.date | 2020-07-09 | |
| dc.date.accessioned | 2023-08-08T20:56:34Z | |
| dc.date.available | 2023-08-08T20:56:34Z | |
| dc.identifier | https://publicacionescd.uleam.edu.ec/index.php/yaku/article/view/9 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8073153 | |
| dc.description | El desarrollo poblacional e industrial en la ciudad de Manta ha generado consecuencias desfavorables para los ecosistemas acuíferos, por tanto es imperiosa la necesidad de evaluar el grado de supervivencia de especies biológicas en puntos cercanos a las descargas de residuales altamente contaminantes. Se realizaron bioensayos de toxicidad en larvas de camarón blanco (Litopenaeus Vannamei), obtenida en la desembocadura del Río Manta, sector de la playa de Tarqui, Manabí, Ecuador; además, se determinaron parámetros físico-químicos como concentración de oxígeno disuelto, salinidad y temperatura. Se midió la sobrevivencia de las larvas de camarón blanco expuestas a distintos periodos de tiempo, determinando que las primeras mortalidades se presentaron a las 72 horas de iniciado el ensayo en 4 de las seis muestras evaluadas. Por su parte, la concentración de oxígeno disuelto fue de 13,5%; con una temperatura de temperatura 30°C en el cauce del río a 500 metros antes de la desembocadura. Se concluye que debido al mecanismo de autodepuración de la naturaleza frente a la contaminación, se dificulta la determinación de la contaminación real de lagos y mares, de modo que se formula la hipótesis de la resistencia que muestran las larvas de camarón que fueron objeto de este bioensayo, la cual debe ser resuelta en futuras investigaciones. Palabras clave: camarón; contaminación; río; bioensayo; supervivencia. Abstract Population and industrial development in the city of Manta has generated unfavorable consequences for aquatic ecosystems, therefore the need to evaluate the degree of survival of biological species at points close to the discharge of highly polluting residuals is imperative. Toxicity bioassays were performed on white shrimp larvae (Litopenaeus Vannamei), obtained at the mouth of the Manta River, Tarqui beach sector, Manabí, Ecuador; In addition, physical-chemical parameters such as dissolved oxygen concentration, salinity and temperature were determined. The survival of the white shrimp larvae exposed to different periods of time was measured, determining that the first mortalities occurred within 72 hours of starting the test in 4 of the six samples evaluated. On the other hand, the concentration of dissolved oxygen was 13.5%; at a temperature of 30 ° C in the riverbed 500 meters before the mouth. It is concluded that due to the mechanism of self-purification of nature against pollution, it is difficult to determine the actual contamination of lakes and seas, so that the resistance hypothesis shown by the shrimp larvae that were the object of this is formulated bioassay, which must be resolved in future research. Keywords: Shrimp; contamination; river; bioassay; survival. Fecha de recepción: 23 de abril de 2020; Fecha de aceptación: 08 de julio de 2020; Fecha de publicación: 09 de julio de 2020. | es-ES |
| dc.description | Population and industrial development in the city of Manta has generated unfavorable consequences for aquatic ecosystems, therefore the need to evaluate the degree of survival of biological species at points close to the discharge of highly polluting residuals is imperative. Toxicity bioassays were performed on white shrimp larvae (Litopenaeus Vannamei), obtained at the mouth of the Manta River, Tarqui beach sector, Manabí, Ecuador; In addition, physical-chemical parameters such as dissolved oxygen concentration, salinity and temperature were determined. The survival of the white shrimp larvae exposed to different periods of time was measured, determining that the first mortalities occurred within 72 hours of starting the test in 4 of the six samples evaluated. On the other hand, the concentration of dissolved oxygen was 13.5%; at a temperature of 30 ° C in the riverbed 500 meters before the mouth. It is concluded that due to the mechanism of self-purification of nature against pollution, it is difficult to determine the actual contamination of lakes and seas, so that the resistance hypothesis shown by the shrimp larvae that were the object of this is formulated bioassay, which must be resolved in future research. Keywords: Shrimp; contamination; river; bioassay; survival. | en-US |
| dc.format | application/pdf | |
| dc.format | text/troff | |
| dc.language | spa | |
| dc.publisher | Editorial Universitario ULEAM | es-ES |
| dc.relation | https://publicacionescd.uleam.edu.ec/index.php/yaku/article/view/9/41 | |
| dc.relation | https://publicacionescd.uleam.edu.ec/index.php/yaku/article/view/9/42 | |
| dc.rights | Derechos de autor 2020 Revista de Ciencias del Mar y Acuicultura YAKU | es-ES |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0 | es-ES |
| dc.source | Revista de Ciencias del Mar y Acuicultura YAKU. ISSN: 2600-5824.; Vol 3 No 6 (2020): Revista de Ciencias del Mar y Acuicultura YAKU; 13-20 | en-US |
| dc.source | Revista de Ciencias del Mar y Acuicultura YAKU. ISSN: 2600-5824.; Vol. 3 Núm. 6 (2020): Revista de Ciencias del Mar y Acuicultura YAKU; 13-20 | es-ES |
| dc.source | 2600-5824 | |
| dc.title | Evaluación de la calidad del agua de mar en la desembocadura del río Manta y sus efectos en la supervivencia de larvas de camarón blanco (Litopenaeus Vannamei) | es-ES |
| dc.title | Evaluation of the quality of sea water in the disbursement of the Manta river and its effects on the survival of larvae white shrimp (Litopenaeus Vannamei) | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | Artículo revisado por pares | es-ES |