SciELO - Scientific Electronic Library Online

vol.50 issue2A new species of Scaris from southeastern Brazil, with notes on S. nessimiani and S. bahiensis (Homoptera: Cicadellidae) author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744


FAWOLE, O.O. Morphometry and diet of Mormyrus rume in the Lekki lagoon, Nigeria. Rev. biol. trop [online]. 2002, vol.50, n.2, pp.689-694. ISSN 0034-7744.

Aspects of the biology of Mormyrus rume (Cuvier and Valenciennes) in Lekki lagoon were investigated. This included the length-weight relationship, condition factor, food and feeding habits and the fecundity of the fish species. The major fishing methods employed for collecting the 225 specimens were castnetting and setnetting. The total lengths ranged from 15.0 to 24.9 cm while the standard lengths ranged from 13.0 to 23.0 cm. The body weights also ranged from 26.2 to 99.3g. The fish exhibited isometric growth in the lagoon. The mean condition factor obtained was 1.20. The condition factor generally decreased with increase in individual sizes. The major food items were detritus and plant parts. The population of males was significantly higher than the females. The gonadosomatic index showed that M. rume in the Lekki Lagoon uses an average of 7.89% of its body weight in egg production. Fecundity ranged from 741 to 6000 eggs with an average of 2991 eggs per female

Keywords : Length-weight relationship; condition factor; fecundity; Mormyrus rume; Lekki Lagoon; Nigeria.

        · abstract in Spanish     · text in English


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License