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Nucleic acid methods based on sequencing of clone libraries provide sequence and the phylogenetic information of an individual clone. In the present study, ammonia monooxygenase ( amoA), nitrite-oxido-reductase ( norB), nitrite reductase ( nirS ) and nitrous oxide reductase ( nosZ ) genes are...
Single nucleotide polymorphisms (SNPs) are useful markers for genetic and genomic studies. They are needed in the eastern oyster ( Crassostrea virginica ), a major aquaculture species, for the mapping of genes affecting economically important quantitative traits such as disease resistance. Here...
The study on histological and ultrastructural characteristics of the digestive tract of yellow catfish ( Pelteobagrus fulvidraco ) was carried out from hatching (0 day after hatching, DAH) until 35 DAH. Larvae for this study were maintained in the laboratory conditions (water temperature ranged...
Salmonids are an important contributor to fish production in many countries. Concerted research efforts have concentrated on optimising production with eco-friendly alternatives to the therapeutic use of antimicrobials. Probiotics and prebiotics offer potential alternatives by providing benefits...
Two growth trials were conducted to elucidate the dietary essentiality of cobalt (Co) and vitamin B 12 for grouper, Epinephelus malabaricus . In Exp. 1, a vitamin B 12 -free basal diet was supplemented with 0.05, 6.5, 10.7, 20.7, 41.6, 82.7 and 153.1 mg Co/kg; in Exp. 2, a vitamin B 12 -free...
The effect of temperature on survival, growth and reproductive parameters of Cherax quadricarinatus from a stage of early sexual differentiation to a stage of sexual maturity was investigated. Growth performance was expressed as specific growth rate (SGR) and growth increment (GI), while...
Listonella anguillarum 90-11-287 and Vibrio splendidus DMC-1 were incorporated in the rotifer Brachionus plicatilis , which was subsequently maintained under larval rearing conditions to determine the residence time of both pathogens in rotifers. Real-time PCR was applied to specifically detect...
This paper summarizes results from two comparative studies of the effect of initial larval density and feeding sequence on meagre ( Argyrosomus regius ) rearing trials. To determine the density effect, two initial larval densities of 50 larvae L − 1 and 100 larvae L − 1 were established. For...
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