Some aspects of reproductive biology of Oreochromis andersonii, Oreochromis machrochir and Oreochromis niloticus in ponds

Abstract: 
The study on the reproductive biology of Oreochromis macrochir, O. niloticus and O. andersonii was carried out for sixty nine days in hapas. There were no significant (P > 0.05) differences in the number and weight of spawn incubated in the mouths of the three fish species although O. macrochir incubated the largest number of eggs with the lowest weight. However, it had longer (P < 0.05) eggs compared to other fish species. The brooding index for O. niloticus (5.04 ± 1.87%) was the lowest followed by O. macrochir (11.99 ± 3.59%) and O. andersonii (14.72 ± 5.13%).
L’étude sur la biologie de la reproduction des Oreochromis macrochir, O. niloticus et O. andersonii a été réalisée pour 69 jours dans les hapas. Il n’y avait pas eu de différences significatives (P> 0,05)dans le nombre et le poids des oeufs incubés dans la bouche des trois espèces de poissons bien que O. macrochir ait incubé le plus grand nombre d’oeufs avec le poids le plus faible. Toutefois, il avait plus d’oeufs (P <0,05) par rapport à d’autres espèces de poissons. L’indice de couvaison pour O. niloticus (5,04 ± 1,87%) était le plus faible suivie par celui d’O. macrochir (11,99 ± 3,59%) et d’O. andersonii (14.72 ± 5,13%).
Language: 
Date of publication: 
2010
Country: 
Region Focus: 
Southern Africa
Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
Publisher: 
ISSN: 
E_ISSN: 
Edition: 
Extent: 
1255-1257
Notes: 

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"