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| Guerra Aznay, M.; Pérez Jar, L.; Leal Lorenzo, S.; Jaime Ceballos, B.; Jiménez Cabrera, R.; Pérez Díaz, S.; Bobadilla González, J.. |
| Con el propósito de evaluar el humus de lombriz roja californiana Eisenia foetida como biofertilizante para el crecimiento poblacional de dos microalgas marinas, fueron cultivadas Tetraselmis tetrathele y Chaetoceros muelleri en agua de mar enriquecida con cuatro diluciones (50; 200; 350 y 500 mL) de extracto líquido de humus. La especie T. tetrathele, cultivada en la dilución de 200 mL, no mostró diferencias con el patrón medio f/2 Guillard para los parámetros: concentración celular, velocidad de crecimiento, tiempo de duplicación y productividad. C. muelleri cultivado en el mismo biofertilizante a las diluciones antes descritas, mostró un comportamiento productivo inferior al patrón, por lo que fueron evaluadas dos nuevas diluciones (550 y 650 mL). Las... |
| Tipo: Journal Contribution |
Palavras-chave: Humus; Biofertilizers. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5708 |
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| Giménez Hurtado, E.; Pérez Jar, L.; Jaime Ceballos, B.; Fraga Castro, I.; Jiménez Cabrera, R.; Cabrera Vilaon, D.; Moreno Urquiza, A.. |
| Se identificó una especie de camarón exótico como Penaeus monodon, camarón tigre gigante, mediante tres ejemplares hembras capturados en lagunas costeras de Tunas de Zaza, golfo de Ana María, Cuba. La talla varió entre 270 mm a 290 mm de longitud total (Lt), con un peso entre 140 g a 230 g. La presencia de la especie significa una adaptación a las aguas cubanas y constituye una perspectiva positiva para su cultivo. |
| Tipo: Journal Contribution |
Palavras-chave: Species; Marine shrimp culture; Shrimp culture. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5247 |
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| Pérez Jar, L.. |
| To satisfy the needs of shrimp farms of southern white shrimp Litopenaeus schmitti in Cuba, an increased mating success of pond-reared broodstock is needed in commercial hatcheries, and this objective depends mostly on the quality of males. Even though this species can reproduce in a closed life-cycle, batches of low-performance pond-reared males have been obtained. To analyze whether the system of tanks is partly responsible, in a first experiment, reproductive performance was compared in unisex and mixed tanks during a production period lasting 28 days. In a second experiment, reproductive performance, sperm quality, and physiological condition was compared between pond-reared and wild males throughout a production period of 70 days. In the first... |
| Tipo: Theses and Dissertations |
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| Ano: 2005 |
URL: http://hdl.handle.net/1834/1544 |
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| Jaime Ceballos, B.; Villareal, H.; Garcia, T.; Pérez Jar, L.; Alfonso, E.. |
| To evaluate the effect of Spirulina platensis inclusion in microdiets for white shrimp Litopenaeus schmitti larvae, a completely randomized experimental design was developed with 4 treatments and three replicates. Diets with 3 inclusion levels (0, 2.5 and 5%) were prepared. A control was fed Artemia nauplii. Larvae were fed for 120 hours from mysis I to postlavae 1 every 4 h, and water quality parameters were measured daily. At the end of the experiment survival was determined, and the development index of the larvae was calculated. The chemical score of the diet was also determined, using the L. schmitti postlarvae amino-acid pattern as reference. Triptophan and hystidine were the first and second limiting amino acids in the diets. Survival was around 80%... |
| Tipo: Journal Contribution |
Palavras-chave: Shrimp culture; Feeding experiments; Diets. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1891 |
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