Genetic relationship of Sardinella lemuru from lombok strait with fish rich in omega-3 fatty acid



Mahrus1, 4, Sutiman Bambang Sumitro2, Didik Huswo Utomo2, Aida Sartimbul3, Abdul Hamid Toha2, 5 & Nashi Widodo2*



1Doctoral Program, Faculty of Agriculture, Brawijaya University, Indonesia; 2Biology Department, Faculty of Mathematics and Natural Sciences, Brawijaya University, Indonesia; 3Faculty of Fishery and Marine Sciences, Brawijaya University, Indonesia; 4Biology Department, Faculty of Teacher Training and Education, University of Mataram, Indonesia; 5Faculty of Husbandry, Fisheries and Marine Sciences, State University of Papua, Indonesia.


Email; *Corresponding author


Article Type




Received November 30, 2012; Accepted December 10, 2012; Published December 19, 2012



Lombok Strait has abundance of Sardine, Sardinella lemuru, which contains such high amount of omega-3 fatty acid (omega-3). However, the genetic relationship of S. lemuru with other commercial fish rich in omega-3 has not been widely studied yet. Studies on genetic proximity of S. lemuru with the other marine fish using 12S rRNA gene is very important in order to obtain genetic information of the Sardine to develop an appropriate strategy for future conservation of the fish in Lombok Strait. The aim of this study was to find out the genetic relationship of Sardinella lemuru living in Lombok Strait with the economically valuable fish and its correlation with omega-3 production. Sardinella lemuru were collected from Lombok Strait, the phylogenetic tree was done based on 12S rRNA gene through a neighbor-joining method to identify the relationship of Sardines and fish rich in omega-3 fatty acid. The phylogenetic tree showed that Sardinella lemuru is similar to Sardinella aurita and has a close similarity with Sardinella maderensis. However, the relationship did not correspond to omega-3 production. Based on the results of the study, it is suggested that the production of omega-3 is not specifically based on the proximity of the species, but it is more associated with conserved domain of ?6-desaturase. Nevertheless, detailed mechanisms still need to be elucidated.



Δ6 desaturase, conserved domains, Sardinella lemuru, omega-3, Lombok Strait



Mahrus et al. Bioinformation 8(25): 1271-1276 (2012)

Edited by

P Kangueane






Biomedical Informatics



This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.