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The Genetic Improvement of Farmed Tilapias (GIFT) project: the story so far
Type: Journal Article
This issue of Naga features three articles about a project on the Genetic Improvement of Farmed Tilapias (GIFT) and a related article on the trend to genetic deterioration in some carp hatcheries. The first is on the genesis ...
Response to bi-directional selection for frequency of early maturing females in Nile tilapia (Oreochromis niloticus)
Type: Journal Article
The present study was carried out to investigate a simple method for recording the occurrence of early maturing females in Nile tilapia at a fixed time after stocking and to estimate the response to bi-directional selection ...
Approaches to national fish breeding programs: pointers from a tilapia pilot study
Type: Journal Article
Details are given of a framework for developing breeding programmes using experience from the Genetic Improvement of Farmed Tilapias project which focussed on Nile tilapias (Oreochromis niloticus ). The following aspects ...
Multiple haemoglobins in three tilapiine species of the genus Oreochromis and in eight strains of O. niloticus
Type: Journal Article
Among three tilapiine species, Oreochromis aureus (Steindachner), O. mossambicus (Peters) and O. niloticus (L.), fifteen banding positions of haemoglobin were resolved using citric acid-aminopropylmorpholine pH 7.0 buffer. ...
A simple and inexpensive fish tagging method
Type: Journal Article
In many developing countries, availability of suitable tags for use in genetics and aquaculture research has been a problem as they are often expensive and have to be imported from other countries. A simple and inexpensive ...
Genetic improvement of farmed tilapias: biochemical characterization of strain differences in Nile tilapia
Type: Journal Article
Four African wild strains (Egypt, Ghana, Senegal and Kenya) and four established Asian farmed strains of Nile tilapia, Oreochromis niloticus (popularly known in the Philippines as 'Taiwan', 'Thailand', 'Singapore' an ...
Photographic image analysis for morphometric studies of tilapia
Type: Journal Article
Biologists have long employed morphometry as a tool in identification, grouping of populations and stock identification of fish. For tilapias, studies have been made on the variability of morphomeric characters in Egyptian ...
Seinability of four strains of Nile tilapia, Oreochromis niloticus, in Chinese ponds
Type: Journal Article
The objective of the current experiment was to examine seinability of four strains of Nile tilapia, O. niloticus, GIFT and Egypt 92, Egypt 88 and Sudan 78. The latter two are normally utilized in China.
Genetic improvement of farmed tilapias: growth performance in a complete diallel cross experiment with eight strains of Oreochromis niloticus
Type: Journal Article
A complete diallel cross experiment was carried out with eight strains of Nile tilapia (Oreochromis niloticus). The strains represented four wild populations collected from various locations in Africa and four populations ...
Genetic variation in lytic activities of blood serum from Nile tilapia and genetic associations with survival and body weight
Type: Journal Article
The objective of the present investigation was to determine the genetic variation in lysozyme activity and SH activity in blood serum from a family material of Nile tilapia (O. niloticus) and to study the genetic associations ...