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| Machado Tamayo, R.; Jaime Ceballos, B.; Nodar, R.; Pérez, A.M.; Marrero, J.. |
| To achieve an appropriate handling of the natural productivity of a cultivation pond, it is required of the study of several aspects, inside which the primary productivity and the fertilization play a fundamental roll. Because the objective of this work was to study the influence of the fertilization with different reasons nitrogen-phosphorus (N:P) on the phytoplankton concentration in the Calisur shrimps farming. The relationships were evaluated (N:P) 5:1; 10:1; 15:1 and one that served as control. The commercial fertilizers urea and triple superphosphate were used (SPT), in conical cylinder tanks of fibber glass with a capacity of 500 l to the bleakness in the area of the ponds. The water was taken from the channel of supply of the farm and registered... |
| Tipo: Proceedings Paper |
Palavras-chave: Shrimp culture; Experimental research. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1949 |
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| Machado Tamayo, R.. |
| To monitor the genetic variability of L.vannamei shrimp-specie as founder stock and their correspondent first generation (F1), four microsatellite DNA loci species-specific for these animals were used. Data from allelic diversity (size, number and frequency of alleles) and levels of hetrozygozity were obtained as measures of genetic diversity. The protocol used is belonging to the lab, from the Norwegian College of Fishery science (NFH) of the University of Tromsø (Uitø). The results indicated a decrease in some of measures for genetic diversity. The number of allele (Na) ranged from 1-9 and their effectives number of alleles (ne) from 1.1 to 6.72. The mean value observed heterozygosity (Ho) by populations range from 0.29 to 0.63, which were lower than the... |
| Tipo: Preprint |
Palavras-chave: Aquaculture; Shrimp culture; Aquaculture; Http://aims.fao.org/aos/agrovoc/c_550. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1522 |
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