Open AccessAge and growth of the tilapia, Oreochromis niloticus (Perciformes: Cichlidae) from a tropical shallow lake in Mexico
Author(s) -
José Luis Gómez Márquez,
Bertha Peña Mendoza,
Isaías Salgado-Ugarte,
José Luis ArredondoFigueroa
Publication year - 2006
Publication title -
revista de biología tropical
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.305
H-Index - 38
eISSN - 2215-2075
pISSN - 0034-7744
DOI - 10.15517/rbt.v56i2.5630
Subject(s) - oreochromis , perciformes , nile tilapia , biology , fishery , tilapia , fish <actinopterygii> , zoology , veterinary medicine , ecology , medicine
Age and growth of Nile tilapia (Oreochromis niloticus) were determined using 1039 specimens collected in a tropical shallow lake of Mexico, from January to December 1993. Standard length of females ranged from 9.0 to 16.5 cm and males from 8.9 to 14.8 cm. The standard length-weight relationships for all individuals was BW=0.1207 SL2469. The age data, derived from opercular bone readings, were used to estimate the growth parameters of the von Bertalanffy equation: Lx=17.88 cm, K=0.3409, t0=-1.543, and Winfinity=149.21 g. The oldest male and female were 2.5 years old. The sex ratio (female:male) was of 1:1 (chi2=0.02, p>0.05).
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom