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Now showing items 11-20 of 35
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 ...
Biochemical and morphometric approaches to characterize farmed tilapias
Type: Journal Article
Biochemical (electrophoresis and mitochondrial DNA) and morphological analysis are important tools for the characterization of strains. Reference is made to studies conducted in the framework of the Genetic Improvement of ...
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 ...
Rice-fish culture demonstration in Surin Province, Thailand
Type: Journal Article
A brief account is given of project activities conducted regarding promotion of rice-cum-fish culture in Surin Province,Thailand as a means of increasing protein consumption and also income for rural people. The effect of ...
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 ...
Population control in farmed tilapias
Type: Journal Article
Under the majority of culture practices, the reduction or elimination of reproduction in culture ponds results in significantly improved yields of marketable fish. An examination is made of existing methods for the control ...
Responses 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 ...
Preference of different terrestrial plants as food for Tilapia rendallli and Oreochromis shiranus
Type: Journal Article
Fish have distinct preferences for plants and there is need to identify those that will lead to good growth and production, especially in Africa where there is abundant natural and agricultural waste vegetation. Some plants ...
Techniques to produce 100% male tilapia
Type: Journal Article
A discussion is presented on endocrine sex reversal and chromosome manipulation techniques for producing 1005 male tilapia. Details are given of methods for the administration of steroids and the induction of ploidy.