SciELO - Scientific Electronic Library Online

 
vol.51 issue1Asociación de la abundancia y la distribución vertical de atunes y peces de pico en el sureste del Mar CaribeDemografía y ecología de anidación de la iguana verde, Iguana iguana (Squamata: Iguanidae), en dos poblaciones explotadas en la Depresión Momposina, Colombia author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista de Biología Tropical

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

Abstract

GOMEZ-MARQUEZ, J.L.; PENA-MENDOZA, B.; SALGADO-UGARTE, I.H.  and  GUZMAN-ARROYO, M.. Reproductive aspects of Oreochromis niloticus (Perciformes: Cichlidae) at Coatetelco lake, Morelos, Mexico. Rev. biol. trop [online]. 2003, vol.51, n.1, pp.221-228. ISSN 0034-7744.

Sex ratio, size at maturity, maturity stages, fecundity and egg diameter of Oreochromis niloticus from Coatetelco Lake, Morelos State, Mexico, were studied from January to December 1993. Sex ratio (male:female) was approximately 1:1.02. Length at maturity was 117 mm (males) and 120 mm (females). The fecundity ranged between 104 and 709 eggs, with egg diameter from 1 000 to 3 000 µm. The gonadosomatic and hepatosomatic index indicate that the species breeds during summer and winter.

Keywords : Oreochromis niloticus; fecundity; gonadosomatic index; sex ratio; Coatetelco lake; Mexico.

        · 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