Effect of eight benthic diatoms as feed on the growth of red abalone (Haliotis rufescens) postlarvae |
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Authors: | Juan Gabriel Correa-Reyes María del Pilar Sánchez-Saavedra María Teresa Viana Norberto Flores-Acevedo Carlos Vásquez-Peláez |
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Institution: | 1. Departamento de Acuicultura, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Kilómetro 107 Carretera Tijuana-Ensenada, Ensenada, Baja California, C.P. 22860, Mexico 2. Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California (UABC), P.O. Box 453, Ensenada, Baja California, C.P. 22860, Mexico 3. Coordinación de la Investigación Científica. Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Ensenada, D.F. C.P. 04510, Mexico
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Abstract: | The growth rate of abalone post larvae of Haliotis rufescens fed ad libitum with a benthic monoalgal diatom culture maintained as monocultures on a semi-commercial scale, was evaluated
and correlated with the biochemical composition of the diatoms. The cell size (7.0 × 4.0 μm to 21.0 × 7.5 μm), protein percentage
(7.42% to 13.66%), and ash content (49.03% to 59.61%) were different among diatom strains; lipid percentage, nitrogen free
extract, and energy content (Kcal g−1) were similar among diatom strains. The values of essential and non-essential amino and fatty acids composition differed
among diatom strains. Differences in the abalone shell length and orthogonal analyses revealed postlarval growth was dependent
on the quality of the food source. Postlarvae abalone displaying the longest shell lengths were fed Nitzschia thermalis var. minor and Amphiprora paludosa var. hyalina (1,712.0 ± 61 μm and 1,709 ± 67 μm, respectively), followed by Navicula incerta (1,413.3 ± 43 μm). The fatty acid content of benthic diatoms and abalone growth rate were not correlated. |
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Keywords: | Abalone postlarvae Benthic diatoms Biochemical composition Haliotis rufescens |
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