Characterisation of wild and cultured Oreochromis shiranus in Malawi

Oreochromis shiranus is a Malawi indigenous tilapia fish species. The aim of the study is to characterise the species phenotypically and genotypically within and between wild strains, unimproved and improved cultured strains. Phenotypic characterisation studies will be carried out using whole fish specimens while genotypic variation analysis will be done through DNA extraction, PCR and electrophoresis processes using fin-clips/ body tissue preserved in absolute alcohol with the help of gene markers. It is hoped that the results will be incorporated in a breeding programme to improve stunted and slow growth presently reported in many culture practices of O. shiranus in Malawi.
L’Oreochromis shiranus est une espèce indigène de poisson tilapia au Malawi. Le but de cette étude est de caractériser l’espèce phénotypiquement et génotypiquement à l’intérieur et entre les souches sauvages, les souches cultivées améliorées et non-améliorées. Des études de caractérisation phénotypique seront effectuées en utilisant des échantillons de poisson entiers alors que l’analyse de variation génotypique se fera par extraction de l’ADN, la PCR et les procédés d’électrophorèse utilisant des tissus fin-clips/body conservés dans l’alcool pur à l’aide de marqueurs génétiques. Il est à espérer que les résultats seront intégrés dans un programme d’élevage pour améliorer une lente et ralentissante croissance actuellement signalée dans la plupart des pratiques de la culture de O. shiranus au Malawi.
Date of publication: 
Region Focus: 
Southern Africa
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
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Printed resource

About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Aqua Culture and Fisheries"