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All Journal Bawal : Widya Riset Perikanan Tangkap JOURNAL OF INDONESIAN TROPICAL FISHERIES (JOINT-FISH) : Jurnal Akuakultur, Teknologi Dan Manajemen Perikanan Tangkap, Ilmu Kelautan Journal of Fisheries & Marine
Kadir, Nadiarti Nurdin
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Social Sciences

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DNA Barcoding and Morphological Characters of Juvenile Plectropomus (Perciformes: Epinephelidae) Caught in Makassar Strait Mainna, Muth; Kadir, Nadiarti Nurdin; Husain, Aidah Ambo Ala; Hidayani, Andi Aliah; Umar, Widyastuti; Moore, Abigail Mary
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.72091

Abstract

Graphical Abstract   Highlight Research  Integrated DNA barcoding and morphological variations can improve the identification of grouper species. DNA barcoding confirms the morphological identification of Plectropomus (98-100% similar). High intraspecies genetic diversity revealed within Plectropomus in Makassar Strait. Potential cryptic species identified within Plectropomus based on genetic analysis.     Abstract  The high economic value of groupers has made them a popular choice in both local and international markets. However, identifying grouper species is also challenging due to complex morphological variations especially in the juvenile phase. An integrative approach combining DNA barcoding and morphometric analysis was applied to improve species identification accuracy and provide additional information on grouper stocks. This research aims to gain a deeper understanding of the morphological and genetic diversity of groupers caught in the juvenile phase from the Makassar Strait. Samples of the genus Plectropomus (n=6) collected from a fish landing site in Pangkajene Kepulauan Regency were identified based on morphology and using molecular methods (DNA barcoding). Phylogenetic and haplotype network analyses were performed. For all specimens the morphometric-meristic and molecular analyses were consistent (98-100% similarity) to known P. leopardus and P. oligacanthus accessions from GenBank. However, phylogenetic analysis: P. leopardus clustered into two distinct lower-level clades, and notably, two P. areolatus (Taiwan) resolved within the P. leopardus clade, while two P. laevis (Philippines) the resolved within the P. oligacanthus clade. Haplotype network showed high intraspecific genetic diversity, with P. leopardus forming four distinct haplotype groups and P. oligacanthus forming two groups. These findings collectively indicate that misidentification may be common and highlight the urgent need for further investigation into geographic barriers to gene flow and the potential existence of cryptic species or subspecies within Plectropomus. This study is expected to provide critical support for sustainable fisheries management and the conservation of marine biodiversity in the Makassar Strait.
Komposisi Spesies dan Fase Hidup Ikan Kerapu Hasil Tangkapan Nelayan di Kabupaten Barru, Sulawesi Selatan Mainna, Muth; Kadir, Nadiarti Nurdin; Husain, Aidah Ambo Ala
BAWAL Widya Riset Perikanan Tangkap Vol 17, No 2 (2025): Agustus 2025
Publisher : Politeknik Kelautan dan Perikanan Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/bawal.17.2.2025.%p

Abstract

Ikan kerapu (Epinephelidae) merupakan jenis ikan demersal penting secara ekologis dan ekonomis. Namun, informasi mengenai keanekaragaman spesies kerapu masih terbatas khususnya di Kabupaten Barru. Penelitian ini bertujuan untuk menganalisis komposisi spesies dan fase hidup ikan kerapu hasil tangkapan nelayan. Pengumpulan data dilaksanakan pada bulan September-Oktober 2022 bertempat di PPI dan pengepul Sumpang Binangae dengan cara mengambil gambar pada tiap ikan kerapu hasil tangkapan nelayan, kemudian diidentifikasi menggunakan buku panduan identifikasi. Penentuan ukuran ikan dilakukan dengan metode RASIO ( Rapid Scaling on Object ) dengan mengestimasikan panjang tubuh ikan menggunakan spidol sebagai alat pembanding terhadap ukuran panjang ikan sebenarnya. Hasilnya, sebanyak 23 spesies kerapu teridentifikasi, yang didominasi oleh spesies Epinephelus areolatus (40,43%). Ikan yang sedikit ditangkap hanya 0,27% yaitu Cephalopholis spiloareae, E. faveatus dan E. heniochus. Kisaran ukuran terbesar ditemukan pada spesies E. coioides , sedangkan yang terkecil yakni C. boenak . Penangkapan ikan didominasi oleh ikan muda (74%), diikuti ikan dewasa (22%), dan juvenil (4%). Temuan ini memberikan informasi penting mengenai keragaman jenis ikan kerapu hasil tangkapan nelayan di Kabupaten Barru dan mendukung upaya pengelolaan perikanan yang berkelanjutan di wilayah tersebut.
DISTRIBUSI UKURAN DAN HUBUNGAN PANJANG BOBOT DAN FAKTOR KONDISI IKAN KAKAP MERAH (Lutjanus gabbus) YANG DIPERDAGANGKAN DI TPI RAJAWALI MAKASSAR Fitriyani S, Nur; Jamal, Muhammad; Kadir, Nadiarti Nurdin
JURNAL AKUAKULTUR, TEKNOLOGI DAN MANAJEMEN PERIKANAN TANGKAP, ILMU KELAUTAN Vol 8 No 1 (2025): JOURNAL OF INDONESIAN TROPICAL FISHERIES
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas Muslim Indonesia Makassar, Sulawesi Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/joint-fish.v8i1.607

Abstract

Snapper has great economic value and is one of the fishery export products. Apart from being an export product, snapper also has a relatively high market price and is very popular with the public for consumption, utilization increases. This causes snappers to face significant stress. This study aims to analyze the size distribution, length-weight relationship, and condition factors of Red Snapper (Lutjanus gibbus) traded at TPI Rajawali Makassar. Data collection uses the stratified random sampling method. Length and weight data were analyzed using the Sturges formula for size distribution, regression analysis for the long-weight relationship, and condition factor calculation. The results showed that the number of samples was 238 with lengths ranging from 12.2–33.5 cm. The highest size distribution was in the length class of 19.0–21.8 cm as many as 64 heads, while the lowest was at 31.9–34.3 cm as many as 5 heads. The length-weight relationship of fish was allometric negative (b = 2.78), which showed faster increase in length than weight. The condition factor of the fish ranged from 0.62-9.16 with an average of 1.03, which indicated that the physiological condition of the fish was in the good category.
Co-Authors Andi Aliah Hidayani Fitriyani S, Nur Husain, Aidah Ambo Ala Mainna, Muth Moore, Abigail Mary Muhammad Jamal Widyastuti Umar