The genetics and histology of red, blond and associated colour variants in Oreochromis niloticus

  title={The genetics and histology of red, blond and associated colour variants in Oreochromis niloticus},
  author={Brendan J. McAndrew and Frank R. Roubal and Ronald J. Roberts and Alistair M. Bullock and I. M. McEwen},
A single red mutant was observed in a pure strain of O. niloticus (Egyptian). This was crossed to 6 normal coloured females and the progeny were used to study the genetics and histology of this commercially important trait. Other potentially important colour variants were also studied. These included blond, blotch, syrup and red melanophore. Histology showed that melanophore development rather than a biochemical pathway mutation was responsible for the colour in red fish. Histology of red… 
Inheritance of the red color in tilapias
The inheritance of the red color was studied in two different varieties of tilapia and it was concluded that red color is dominant over the normal black color and controlled by a single autosomal gene (R).
Melanophore appearance in wild and red tilapia embryos.
Comparison between red and wild types showed that these two tilapia can be easily scored at day 7, and indications that the pigmentation over the body develops independently of the initial degree of pigmentation are presented.
Mass selection for red colour in Oreochromis niloticus (Linnaeus 1758)
Mass selection to obtain a red homozygous population in O. niloticus, Stirling strain, was appropriate and was also effective in reducing black blotch incidence in the same species.
Development of Farm Type Golden Variant of Labeo rajasthanicus (Pratap through Captive Breeding
The dominant inheritance in red Stirling strain of the tilapia is a dominant inheritance under Mendelian control and the colour of fish can be gainfully improved using selected strategies, such as marker-assisted selection based on molecular data.
QTL Mapping for Red Blotches in Malaysia Red Tilapia (Oreochromis spp.)
This study laid a foundation for exploring a genetic mechanism of body colors and carrying out genetic improvement for color quality in tilapia by developing nine microsatellite markers and validated significant correlations between genotypes and blotch data.
Nile Tilapia: A Model for Studying Teleost Color Patterns.
It is suggested that tilapia, a fish with 4 types of pigment cells and a vertically barred wild-type color pattern, together with various natural and artificially induced color gene mutants, can serve as an excellent model system for study color patterning in vertebrates.
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology
The path analysis indicated a lack of genetic correlation between the degree of black blotches and the economic traits of red tilapia, which facilitates the development of high growth performance red fish with blotched-free reddish skin.


‘Blond’: a useful new genetic marker in the tilapia, Oreochromis niloticus (L.)
. Breeding tests demonstrate that a blond mutant showing a marked reduction of melanin in chromatophores, arising within a laboratory population of Oreochromis niloticus (L.) is due to a single
Genetic bases of fish selection
This chapter discusses the Genetics of Fish Grown in Fish Ponds and Living in Natural Water Bodies, the Inheritance of Quantitative Traits in Fishes, and the Use of Biochemical Variation in Embryological, Populational and Evolutionary Studies of Fishes.
An evaluation of two types of containers for the artificial incubation of Oreochromis eggs
The feasibility of using the superior round-bottomed containers for artificial egg and fry incubation and the advantages for broodstock management to mass produce Oreochromis fry are discussed.
Dr. Axelrod's Atlas of freshwater aquarium fishes
Electrophoretic differences of extensive isozymes from the surface mucus of Sarotherodon fishes
  • Bull. Inst. Zool., Acad. Sin
  • 1983
A study of pigmentation in hybrids between the common and decorative Japanese carp. II. The pleiotropic action of dominant pigmentation genes
  • Genetika (Moscow)
  • 1974
Esterase Isozymes in Oreochromis niloticus, O. aureus, O. mossambicus and red tilapia
  • Proc. Int. Symp. Tilapia in Aquaculture
  • 1983