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All Journal JSMARTech : Journal of Smart Bioprospecting and Technology
Aulia, Alvina Azra
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Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience

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Genetic Diversity of Snapper Fish (Lutjanus rivulatus) from Raja Ampat Based on the Cytochrome Oxidase I (COI) Gene Aulia, Alvina Azra; Mubarakati, Nurul Jadid; Dailami, Muhammad; Toha, Abdul Hamid A.
JSMARTech: Journal of Smart Bioprospecting and Technology Vol. 7 No. 2 (2026): JSMARTech Volume 7, No 2, 2026
Publisher : JSMARTech

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jsmartech.2026.007.02.01

Abstract

Raja Ampat is an Indonesian archipelago widely recognized as one of the world’s major centers of marine biodiversity within the Coral Triangle. Among the components of biodiversity, genetic diversity plays an important role in supporting population stability, adaptive capacity, and long-term species persistence. However, genetic information on Lutjanus rivulatus from the Raja Ampat region remains limited. This study analyzed 11 specimens of L. rivulatus obtained from fish markets in Sorong City, Southwest Papua. Based on information from local traders, the specimens were reported to originate from fishing grounds around Raja Ampat. Molecular analysis was conducted using the mitochondrial Cytochrome Oxidase Subunit I (COI) gene through DNA extraction, PCR amplification, electrophoresis, sequencing, and sequence analysis. BLAST analysis confirmed that all specimens were identified as Lutjanus rivulatus based on sequence similarity values ranging from 99.85% to 100%, the presence of differences in nucleotide composition in some samples indicated relatively limited haplotype variation, the haplotype types of the samples were categorized into universal and specific haplotypes that different transition and transversion mutations, the haplotype diversity (Hd) was 0.47273, while the nucleotide diversity (π) was 0.00078. Genetic distances ranged from 0.000 to 0.003 indicating low genetic differentiation amongst individuals within the samples. Phylogenetic reconstruction of the Raja Ampat samples alongside reference sequences from GenBank placed them within the same clade, supported by strong bootstrap values. Overall, this information provides basic genetic data regarding population structure, fisheries management and the conservation of marine biodiversity in the Bird’s Head Seascape.
Co-Authors Abdul Hamid A. Toha Muhammad Dailami, Muhammad Nurul Jadid Mubarokati