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      Supervivencia embrionaria de Galaxias maculatus (Jenyns, 1842) sometida a diferentes tratamientos profilácticos Translated title: Embryonic survival of Galaxias maculatus (Jenyns, 1842), under different prophylactic immersion bath

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          Abstract

          Se evaluó el uso de antifúngicos para mejorar la supervivencia embrionaria de Galaxias maculatus. Se diseñaron tres tratamientos utilizando formalina en dosis de 250 ppm; yodo en dosis de 100 ppm y sal de mar en dosis de 30 ups y un tratamiento control. Para cada tratamiento y el control se utilizaron 15 réplicas con 100 embriones por réplica. El tratamiento correspondió a sumergir los embriones en un baño profiláctico por una hora cada dos días y el control sólo en agua de salinidad 10. Posteriormente se evaluó la supervivencia larval de cada tratamiento y control a los 15 días de vida. En el tratamiento con sal se obtuvo la mayor supervivencia embrionaria y larval, mejorando en un 27,4 y 11,6% (P < 0,05) por sobre el control. En el tratamiento con formalina se obtuvo supervivencia embrionaria y larval de 9,8 y 4,0% respectivamente sobre el control (P < 0,05) y en el caso del yodo se obtuvo una supervivencia embrionaria de 2,6% por sobre el control (P > 0,05) y supervivencia larval de un 16,4% menor al control (P < 0,05). En conclusión la sal muestra mayor efectividad como tratamiento profiláctico para mejorar la supervivencia embrionaria de G. maculatus.

          Translated abstract

          The use of antifungals was assessed to improve embryo survival of Galaxias maculatus. Three treatments using formalin dose of 250 ppm, iodine dose of 100 ppm, and sea salt in doses of 30 ups were designed, and a control treatment under 10 of salinity water. For each treatment and control, 15 replicates were used, with 100 embryos in each replicate. Embryos were immersed into each treatment solution for one hour every two days. Larval survival after 15 days old was assessed. Higher embryonic and larval survival was obtained in sea salt treatment improving by 27.4 and 11.6% (P < 0.05) respectively over control results. Formalin treatment resulted in embryonic and larval survival of 9.8 and 4.0% respectively more than control (P < 0.05) and in the case of iodine embryonic survival, 2.6% more than control (P > 0.05) and larval survival of 16.4% lower than the control (P < 0.05). In conclusion, sea salt shows greater effectiveness as a prophylactic treatment to improve the embryonic survival of G. maculatus.

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          Stages in the normal development of Galaxias maculatus attenuatus (Jenyns)

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            Laboratory culture ofGalaxias maculatusand potential applications

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              Use of Hydrogen Peroxide and Formalin Treatments during Incubation of Landlocked Fall Chinook Salmon Eyed Eggs

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                lajar
                Latin american journal of aquatic research
                Lat. Am. J. Aquat. Res.
                Pontificia Universidad Católica de Valparaíso<BR>Facultad de Recursos Naturales<BR>Escuela de Ciencias del Mar
                0718-560X
                July 2016
                : 44
                : 3
                : 643-648
                Affiliations
                [1 ] Universidad Católica de Temuco Chile
                [2 ] Universidad Católica de Temuco Chile
                Article
                S0718-560X2016000300023
                e0473fd3-c8a0-426d-a72d-7d969f94922d

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                Product

                SciELO Chile

                Self URI (journal page): http://www.scielo.cl/scielo.php?script=sci_serial&pid=0718-560X&lng=en
                Categories
                FISHERIES
                MARINE & FRESHWATER BIOLOGY
                OCEANOGRAPHY

                Oceanography & Hydrology,Aquaculture & Fisheries,Ecology
                Galaxias maculatus,fish,embryo,profilaxis,fungi,aquaculture,peces,embriones,hongos,acuicultura

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