Assessment of endemic microalgae as potential food for Artemia franciscana culture
| Autor: | Carlos Rangel-Dávalos, Marco A. Cadena-Roa, Maurilia Rojas-Contreras, Juan M. Pacheco-Vega, Felipe Ascencio |
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| Rok vydání: | 2015 |
| Předmět: |
QH301-705.5
Nitzschia zonas áridas SH1-691 Brine shrimp nutrición GC1-1581 Schizochytrium Aquatic Science Oceanography fatty acids Dry weight Aquaculture Botany Aquaculture. Fisheries. Angling Food science Biology (General) ácidos grasos chemistry.chemical_classification biology business.industry arid zones microalgae Fatty acid biology.organism_classification nutrition aquaculture microalgas chemistry brine shrimp acuicultura Navicula Artemia business Polyunsaturated fatty acid |
| Zdroj: | Latin American Journal of Aquatic Research, Vol 43, Iss 1, Pp 23-32 (2015) Latin american journal of aquatic research v.43 n.1 2015 SciELO Chile CONICYT Chile instacron:CONICYT |
| ISSN: | 0718-560X |
| Popis: | In this study, five microalgal strains were isolated from Bahía de La Paz, Baja California Sur, Mexico and identified as Grammatophora sp., Navícula sp., Rhabdonema sp., Schizochytrium sp., and Nitzschia sp., and their evaluation as potential food for Artemia franciscana. The isolated strains were cultured outdoors and harvested after four days. Chaetoceros muelleri was cultured under laboratory conditions and used as control. The protein, lipid, and carbohydrate composition and the fatty acid profiles of the strains were determined by gas chromatography. To assess the effect of microalgal strains on A. franciscana, decapsulated cysts were cultured at outdoor conditions in 15 L containers. The experiment was conducted for twelve days. Samples from the five different feeding treatments were taken at the beginning and end of the experiment to assess number, size, and weight of Artemia larvae. Treatment with Rhabdonema sp. showed larvae with a lower percentage of polyunsaturated fatty acids (PUFAs) while Grammatophora sp. showed those with the greatest PUFA proportion, even more than those fed Chaetoceros muelleri (control). Larvae consuming Schizochytrium sp. had no docosahexanoic (DHA) nor eicosapentaenoic (EPA) fatty acid content. Growth and survival of A. franciscana did not show significant differences among feed treatments, except when it was fed Nitzschia sp., showing lower survival and dry weight. Treatment based on Schizochytrium sp. and Rhabdonema sp. had a greater A. franciscana size but reduced dry weight; additional tests including two or more algal species for every treatment should be carried out to determine the best yield. |
| Databáze: | OpenAIRE |
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