Judul: The study on utilization and management of sharks and rays (Elasmobranchii) fisheries in Java sea
Abstrak: Shark and rays are significant catch in the marine fisheries of Java sea. The studies investigate the biodiversity of shark and rays, fishing gear, food habit, reproductive biology, and alternative management for the fishery in Java Sea. A total of 35 species of shark representing 3 ordo, 9 families, 15 genus, and 42 species of ray representing 4 ordo, 9 families, 16 genus, were recorded at the five landing sites surveyed in North Java Sea. Shark were mainly caught by bottom long line, while rays were caught mainly by large demersal bottom gillnet and bottom long time.
Keyword: Sharks, Rays, Fisheries management, Java sea, Dasyatis kuhlii

Judul: DNA Barcoding dan Rekonstruksi Filogenetik Spesies Hiu yang Didaratkan di Pelabuhan Perikanan Pantai Muncar, Banyuwangi, Jawa Timur
Abstrak: Sharks are one of a fisheries commodity that are exploited on a large scale because of their very high economic value. The identification of sharks is very problematic, because specimens has similarity in morphology and mostly have had key diagnostic features removed. This study aimed to identify and to review the status of sharks landed in Muncar Fisheries Landing Site and see the trend of catches in 2012 to 2013, and also to reconstruct the shark species that were landed at South Java fishing port using molecular approaches. The DNA amplification was using Cytochrome Oxidase I locus mitochondrial. A total of 7 species was identified including Alopias pelagicus, Carcharhinus falciformis, C. sorrah, C. amblyrhynchos, Galeocardo Cuvier, Atelomycterus marmoratus, and Spyrna lewini. The diversity of shark species that landed in Muncar during the last 2 years has been decreased. The identified sharks species in this study sites were about 18% of all Indonesian sharks. The result of this study is expected help the Government to manage shark fisheries in Indonesia
Keyword: Muncar, Conservation, Phylogenetic, DNA barcoding, Sharks

Judul: Synthesis and Characterization of Copper(II) Oxide Nanoparticles (CuO-NP) Using Chemical Precipitation Method
Abstrak: Penelitian ini bertujuan melakukan optimasi suhu kalsinasi, melihat pengaruh penambahan surfaktan terhadap band gap, ukuran partikel, dan tingkat kristalinitas nanopartikel CuO, serta aktivitas nanopartikel CuO sebagai agen antibakteri. CuO-NP berhasil disintesis menggunakan metode presipitasi kimia dengan variasi suhu kalsinasi 400, 600, dan 800 °C dengan agen pengendap NaOH. Nanopartikel hasil sintesis dikarakterisasi lebih lanjut menggunakan spektrofotometer UV-Vis, XRD, dan SEM-EDX. Nilai band gap CuO-NP meningkat seiring dengan kenaikan suhu. Band gap semakin besar ketika nilai absorbansi semakin kecil. Peningkatan suhu kalsinasi menyebabkan ukuran kristal dari CuO-NP menjadi semakin besar. Tingkat kristanilitas CuO-NP terbaik didapat sebesar 68,31% dengan suhu kalsinasi 600 °C. Penambahan PVP 1% tidak memiliki pengaruh yang signifikan dalam mencegah terjadinya aglomerasi antar partikel dan CuO-NP sehingga dihasilkan ukuran yang lebih besar. Hasil uji antibakteri menunjukkan tidak terdapat zona hambat dari nanopartikel CuO sebagai agen antibakteri.
Keyword: bandgap, CuO, nanoparticle, PVP, temperature