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dc.creatorMaeda-Martínez,Alfonso N
dc.creatorSaucedo,Pedro E
dc.creatorMazón-Suástegui,José M
dc.creatorAcosta-Salmón,Héctor
dc.creatorRomero-Meléndez,Zoreyda
dc.date2016-09-01
dc.date.accessioned2019-05-03T13:28:02Z
dc.date.available2019-05-03T13:28:02Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000400020
dc.identifier.urihttp://revistaschilenas.uchile.cl/handle/2250/88251
dc.descriptionWe evaluated the effect of nine isocaloric diets prepared with a mixture of microalgae alone (Tisochrysis lutea + Chaetoceros calcitrans + Ch. gracilis; 1:1:1) and different combinations of the algal mixture and cornstarch or wheat flour, on the Scope for Growth (SFG) of Cortez oyster Crassostrea corteziensis juveniles (7.2 ± 1.1 mm shell length). A total 15,000 spat was acclimated to the experimental diets for 30 days at 21°C, prior SFG determinations. Consumed energy, absorbed energy, and SFG decreased with a corresponding decrease in the proportion of live microalgae in the diet. Oysters fed the microalgal diet showed significantly increased physiological activity in all parameters except absorption efficiency. Oysters fed diets containing up to 50% dry feedstuff showed positive SFG values but these were significantly lower than SFG shown in oysters fed microalgae alone. Oysters fed diets containing ≥75% dry feedstuff showed negative SFG. These results suggest that cereals can be used as complementary food or C. corteziensis spat in hatchery operations, provided replacement of microalgae is kept below 50%.
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dc.languageen
dc.publisherPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
dc.relation10.3856/vol44-issue4-fulltext-20
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceLatin american journal of aquatic research v.44 n.4 2016
dc.subjectCrassostrea corteziensis
dc.subjectenergy balance
dc.subjectoyster nutrition
dc.subjectmicroalgae
dc.subjectcornstarch
dc.subjectwheat flour
dc.titleScope for growth of juvenile Cortez oyster, Crassostrea corteziensis fed isocaloric diets prepared with microalgae and cereal flours


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