Title
Spawning season variations of female Nile tilapia, Oreochromis niloticus, from man-made lakes of Cote d'Ivoire
Date Issued
01 December 1999
Access level
metadata only access
Resource Type
journal article
Author(s)
Biodiversity Conservation Project
Abstract
The spawning season of Oreochromis niloticus females was studied over two annual cycles in 6 small agropastoral and 2 large hydroelectric reservoirs of Cote d'Ivoire (Ayame and Kossou), situated between 5 and 10°N of latitude. Reproduction occurred during a marked season in the agropastoral reservoirs and in Lake Ayame, whereas it was continuous in Lake Kossou. Spawning season differed between reservoirs and among years within the same reservoir. Seasonal changes in temperature, rainfall, day length, chlorophyll a concentration and water level often corresponded with changes in the annual spawning cycle. However, annual periodicity of O. niloticus reproduction was more likely influenced by the ephemerides cycle.
Start page
375
End page
387
Volume
56
Issue
4
Language
English
OCDE Knowledge area
Acuicultura
Biología marina, Biología de agua dulce, Limnología
Subjects
Scopus EID
2-s2.0-0033373008
Source
Environmental Biology of Fishes
ISSN of the container
03781909
Sponsor(s)
We wish to acknowledge Serge Thomas and Jean-Baptiste Assamoa for their help in collecting and monitoring environmental data on agropastoral reservoirs. We also thank IDESSA for providing data concerning air temperature and rainfalls. We specially acknowledge Jacques Lemoalle for the useful discussions we shared and for his valuable suggestions. This study was supported by ORSTOM Department of Inland Waters.
Sources of information:
Directorio de Producción Científica
Scopus