|
|
|
Registros recuperados: 27 | |
|
| |
|
| |
|
| |
|
|
Lavens, P.; Sorgeloos, P.. |
It is generally accepted, that a major constraint in the further development of marine fish and crustacean aquaculture, is the variable quality of eggs and larvae used for the hatchery-production of fry. Nonetheless, valid criteria to evaluate optimal egg quality have not been identified yet. Instead, particular indicators, are used, e.g. the fertilization and hatching rate, overall culture success during the first rearing period, etc., but these are not totally objective because hatchery-specific conditions may interfere. The biochemical composition of the egg may be one of the possible determinants of egg quality, which can be evaluated on a more objectie basis. In this respect, studied have been initiated to analyze in freshly-released eggs, the levels... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture techniques; Biochemical composition; Crustacean culture; Eggs; Fatty acids; Fish culture; Hatcheries; Quality control; Vitamin C. |
Ano: 1991 |
URL: http://www.vliz.be/imisdocs/publications/262328.pdf |
| |
|
| |
|
| |
|
|
Ferreira,Leandro de Araújo; Fazzi-Gomes,Paola Fabiana; Guerreiro,Sávio; Rodrigues,Marília Danyelle Nunes; Ribeiro-dos-Santos,Ândrea Kely; Santos,Sidney; Hamoy,Igor. |
ABSTRACT The present study evaluated the genetic variability of the broodstocks of tambaqui hatcheries in the Brazilian state of Pará. Samples were obtained from the caudal fin of 110 broodstocks from one hatchery in each of four municipalities (Santarém, Peixe-Boi, Breu-Branco, and Ulianópolis), representing all the individuals of each hatchery stock. The samples were genotyped using the multiplex system microsatellite markers. Data were used to calculate observed and expected heterozygosity, number of alleles per locus, and allelic richness. The effective population size and inbreeding coefficient were also calculated. The genetic differentiation between populations was evaluated by using FST, and population structuring by the most likely number of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colossoma macropomum; Fish; Genetic diversity; Hatcheries. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100302 |
| |
Registros recuperados: 27 | |
|
|
|