Supervivencia de larvas de Litopenaeus (Boone) alimentadas con Chaetoceros muelleri producido con fertilizantes agrícolas
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Ciencias Marinas
Larval survival of Litopenaeus vannamei fed Chaetoceros muelleri produced with agricultural fertilizers and f/2 medium (control) was compared. The microalgae were cultivated in natural sea water fertilized with 36.8 mg L–1 N-NH4NO3 and 3.5 mg L–1 P-P2O5 as a substitute for nitrogen and phosphorus in...
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| Published in: | Ciencias Marinas |
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| Main Authors: | , , , |
| Format: | Artículo científico |
| Language: | English |
| Published: |
Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas
1999
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| Summary: | Larval survival of Litopenaeus vannamei fed Chaetoceros muelleri produced with agricultural fertilizers and f/2 medium (control) was compared. The microalgae were cultivated in natural sea water fertilized with 36.8 mg L–1 N-NH4NO3 and 3.5 mg L–1 P-P2O5 as a substitute for nitrogen and phosphorus in the f/2 medium. Microalgal concentration during feeding of nauplius5 stages to protozoeaIII was maintained at a density of 100–150 x 103 cells mL–1. From mysisI to postlarvae1 stages, Artemia franciscana nauplii were the only source of food. Average growth of C. muelleri with agricultural fertilizers was greater and significant (P < 0.05) with respect to the control on days 2, 3 and 4 of the culture; however, on day 5, there was no significant difference in the cellular density. Survival of the larvae of the mysisI stage fed C. muelleri produced with agricultural fertilizers and f/2 medium was 69% and 77.5%, respectively, and showed significant differences (P < 0.05). However, survival at the postlarvae1 stage in both treatments (60.1% and 65.6%) was not significantly different. We conclude that the use of nutrients from agricultural fertilizer as a substitute for nitrogen and phosphorus in the f/2 medium constitutes a viable alternative for the culture of C. muelleri as food for larvae of L. vannamei.
Se comparó la supervivencia de larvas de Litopenaeus vannamei alimentadas con Chaetoceros muelleri producido con fertilizantes agrícolas y medio f/2 (control). La microalga se cultivó en agua de mar natural fertilizada con 36.8 mg L–1 N-NH4NO3 y 3.5 mg L–1 P-P2O5, como sustitutos de nitrógeno y fósforo del medio f/2. La alimentación durante el estadio nauplio5 a protozoeaIII se mantuvo a una densidad de 100–150 x 103 células mL–1. De mysisI a postlarva1 se empleó Artemia franciscana recién eclosionada como única fuente de alimento. El crecimiento promedio de C. muelleri con fertilizantes agrícolas fue mayor y significativamente diferente (P < 0.05) con respecto al control en los días 2, 3 y 4 del cultivo; sin embargo, al día 5 no existen diferencias significativas. La supervivencia de la larva al estadio mysisI alimentada con C. muelleri producido con fertilizantes agrícolas y medio f/2 fue 69% y 77.5%, respectivamente; se encontraron diferencias significativas (P < 0.05) para este estadio. Sin embargo, la supervivencia hasta postlarva1 en ambos tratamientos (60.1% y 65.6%) no es significativa. Se concluye que el uso de estos nutrientes derivados de fertilizantes agrícolas como sustitutos de nitrógeno y fósforo del medio f/2 constituyen una alternativa viable para el cultivo de C. muelleri como alimento para larvas de L. vannamei. |
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