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Norfatimah M.Y.,University Technology of MARA | Norfatimah M.Y.,Universiti Sains Malaysia | Teh L.K.,University Technology of MARA | Salleh M.Z.,University Technology of MARA | And 3 more authors.
Gene | Year: 2014

This is the first documentation of the complete mitochondrial genome sequence of the Malaysian Mahseer, Tor tambroides. The 16,690. bp mitogenome with GenBank accession number JX444718 contains 13 protein genes, 22 tRNAs, two rRNAs, and a noncoding control region (D-loop) as is typical of most vertebrates. The phylogenomic reconstruction of this newly generated data with 21 Cypriniformes GenBank accession ID concurs with the recognized status of T. tambroides within the subfamily Cyprininae. This is in agreement with previous hypotheses based on morphological and partial mitochondrial analyses. © 2014 Elsevier B.V. Source


Rosli N.A.M.,Universiti Sains Malaysia | Isa M.M.,Universiti Sains Malaysia | Isa M.M.,Center for Marine and Coastal Studies
Tropical Life Sciences Research | Year: 2012

Scanty information exists pertaining to the length-weight relationship (LWR) and length-lengthrelationship(LLR)parameters of longsnouted catfish,Plicofollis argyropleuron in lotic systems throughout the northern part of Peninsular Malaysia. It is vital to reveal these biological properties of P. argyropleuron in Kuala Muda and Merbok estuary for future management and to increase knowledge about this fish stocks. The fish samples were randomly collected in the estuary area of Kuala Muda and Merbok, Kedah for 10 months from March 2009 to December 2009. The values of the exponent b in the LWR equations (W = aLb) were approximately 3, indicating an isometric growth with high correlation coefficient (r2). The value of LLR (r2>0.9) indicated that they are highly significant and highly correlated. These parameters are essential for evaluating the relative condition of fish and species managements as well as their fisheries and stock assessment. © Penerbit Universiti Sains Malaysia, 2012. Source


Nazia A.K.,Universiti Sains Malaysia | Suzana M.,Universiti Sains Malaysia | Azhar H.,Pusat Pengembangan Akuakultur | Nguyen Thuy T.T.,A+ Network | And 2 more authors.
Journal of Applied Ichthyology | Year: 2010

In the present study, we assessed the genetic variation of three Clarias macrocephalus Günther populations collected from Kedah, Perlis and Kelantan (Peninsular Malaysia) using sequences of partial mitochondrial cytochrome b (Cyt b) and D-loop genes. A total of 57 individuals were sequenced and 1470 bp were obtained (1053 bp Cyt-b; 417 bp D-loop). The analysis revealed 21 haplotypes based on 81 polymorphic sites. Nucleotide diversity (Π) was 0.003 in all populations while haplotype diversity ranged from 0.657 to 0.765. No significant genetic differentiation among the three populations was observed. Nevertheless, a number of private haplotypes was discovered, providing valuable information for selective breeding programs. © 2010 Blackwell Verlag, Berlin. Source


Suzana M.,Universiti Sains Malaysia | Lutfi A.M.,Universiti Sains Malaysia | Hadi A.A.,Universiti Sains Malaysia | Devakie M.N.,Fisheries Research Institute | And 2 more authors.
Biological Invasions | Year: 2011

Genetic diversities in two cultured oyster species, Crassostrea iredalei (Faustino 1932) and Crassostrea belcheri (Sowerby 1871) were assessed using a 581-nucleotide fragment of the mtDNA cytochrome oxidase subunit 1 (CO1) gene. A total of 103 C. iredalei individuals and 120 C. belcheri from 12 populations were sampled along the coast of Malaysia. Trees of unique haplotype samples generated based on Neighbor-Joining (NJ) algorithm revealed that many individuals had been misidentified and did not cluster with their presumed species based on morphological identification. BLAST results of DNA sequences showed presence of previously unreported C. madrasensis in Peninsular Malaysian waters (98% maximum identity). The true identity of the Muar (Crassostrea sp.) and Semporna (Saccostrea sp.) populations were unresolved by two BLAST search and showed less than 88% identity with other species in GenBank. Repeated analysis of these two populations using 487 bp of the mitochondrial 16S gene data showed only a maximum identity less than 97%. Hence, the identity of these specimens remains unclear. Evolutionary divergences within presumed species were 0.001-0.011 and 0.034-0.313 between species. Findings from this study have important implications for aquaculture, management and monitoring of cultured populations as well as conservation of wild oyster species in Malaysia. © 2011 Springer Science+Business Media B.V. Source

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