Survival of white shrimp larvae grown in different containers and fed natural or artificial diets
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| Format: | Artículo científico |
| Language: | en |
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Universidad de Colima
2005
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| _version_ | 1876423256581341184 |
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| author | A. O. Meyer-Willerer |
| author_facet | A. O. Meyer-Willerer |
| contents | Survival of white shrimp larvae grown in different containers and fed natural or artificial diets A. O. Meyer-Willerer Agrociencias culture volumes Ammonia excretion life and artificial feeds Artificial and natural feeds for shrimp larvae cultures (Litopenaeus vannamei) were tested in a series of containers. These were eight flasks with 15L, eight aquaria with 50L and as control group six large fiberglass tanks with 1500L, all with fresh marine filtered water. Initial density in all containers was 70 nauplii/L. Those in flasks and aquaria received either natural feeds, or artificial diets. The control group were fed natural diets and were cultured in large tanks that are normally used in postlarvae hatchery laboratories. The main soluble product excreted by shrimp larvae is the ammonium ion that is toxic, when present in high concentrations. It was determined daily with the indophenol colorimetric method. Results show differences in ammonia concentration and larval survival between the different diets and also between containers. In small water volumes compared to larger ones, the natural products presented higher total ammonia ion concentration present (from 500 to 750µg/L) due to this ion added to the algae as fertilizer, needing daily water exchanges after the ninth day of culture to keep this ion under lethal concentration for shrimp larvae. Poor postlarvae survival was achieved (less than 15%) with the artificial fed larvae due to the presence of protozoa feeding on precipitated diet in the bottoms of the flasks or aquaria. Those larvae in aquaria presented also sublethal ammonia ion concentrations at the ninth day, but survival rate with natural feeds was almost four times higher, than with artificial diets. Control tanks with natural feeds presented survival rates (70 ± 5%) similar those reported in other larvae laboratories. 2005 artículo científico 0188-7890 https://www.redalyc.org/articulo.oa?id=83709102 en http://www.redalyc.org/revista.oa?id=837 Avances en Investigación Agropecuaria application/pdf Universidad de Colima Avances en Investigación Agropecuaria (México) Num.1 Vol.9 |
| format | Artículo científico |
| id | redalyc_83709102 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Universidad de Colima |
| spellingShingle | Survival of white shrimp larvae grown in different containers and fed natural or artificial diets A. O. Meyer-Willerer Agrociencias culture volumes Ammonia excretion life and artificial feeds Survival of white shrimp larvae grown in different containers and fed natural or artificial diets A. O. Meyer-Willerer Agrociencias culture volumes Ammonia excretion life and artificial feeds Artificial and natural feeds for shrimp larvae cultures (Litopenaeus vannamei) were tested in a series of containers. These were eight flasks with 15L, eight aquaria with 50L and as control group six large fiberglass tanks with 1500L, all with fresh marine filtered water. Initial density in all containers was 70 nauplii/L. Those in flasks and aquaria received either natural feeds, or artificial diets. The control group were fed natural diets and were cultured in large tanks that are normally used in postlarvae hatchery laboratories. The main soluble product excreted by shrimp larvae is the ammonium ion that is toxic, when present in high concentrations. It was determined daily with the indophenol colorimetric method. Results show differences in ammonia concentration and larval survival between the different diets and also between containers. In small water volumes compared to larger ones, the natural products presented higher total ammonia ion concentration present (from 500 to 750µg/L) due to this ion added to the algae as fertilizer, needing daily water exchanges after the ninth day of culture to keep this ion under lethal concentration for shrimp larvae. Poor postlarvae survival was achieved (less than 15%) with the artificial fed larvae due to the presence of protozoa feeding on precipitated diet in the bottoms of the flasks or aquaria. Those larvae in aquaria presented also sublethal ammonia ion concentrations at the ninth day, but survival rate with natural feeds was almost four times higher, than with artificial diets. Control tanks with natural feeds presented survival rates (70 ± 5%) similar those reported in other larvae laboratories. 2005 artículo científico 0188-7890 https://www.redalyc.org/articulo.oa?id=83709102 en http://www.redalyc.org/revista.oa?id=837 Avances en Investigación Agropecuaria application/pdf Universidad de Colima Avances en Investigación Agropecuaria (México) Num.1 Vol.9 |
| title | Survival of white shrimp larvae grown in different containers and fed natural or artificial diets |
| topic | Agrociencias culture volumes Ammonia excretion life and artificial feeds |
| url | https://www.redalyc.org/articulo.oa?id=83709102 |