Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/9944
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: The genetics and histology of red, blond and associated colour variants in Oreochromis niloticus
Authors: McAndrew, Brendan
Roubal, Frank R
Roberts, Ronald J
Bullock, Alistair M
McEwen, I M
Contact Email: b.j.mcandrew@stir.ac.uk
Issue Date: Mar-1988
Publisher: Springer
Citation: McAndrew B, Roubal FR, Roberts RJ, Bullock AM & McEwen IM (1988) The genetics and histology of red, blond and associated colour variants in Oreochromis niloticus, Genetica, 76 (2), pp. 127-137.
Abstract: 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 tilapia showed almost a complete absence of melanin granules in the skin, blotched individuals showed areas characteristic of red and normal skin. The histology of the skin of blond fish showed the incomplete development of melanophores and melanocytes. Genetic analysis of the red trait shows that red is an autosomal dominant, and confirms that blond is autosomal recessive as is syrup. The analysis of blotch and red melanophore is not complete but suggests that both are epistatic to red. The implications of these findings are discussed in relation to the improvement of existing red strains and the importance of these colour traits for the development of new colour variants in tilapia.
Type: Journal Article
URI: http://hdl.handle.net/1893/9944
DOI Link: http://dx.doi.org/10.1007/BF00058811
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Aquaculture
University of Queensland
University of Stirling
Scottish Marine Biological Association
University of Stirling

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