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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Journal of Innovation and Applied Technology Research Journal of Life Science Jurnal Kelautan Tropis JFMR (Journal of Fisheries and Marine Research) AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Penelitian Perikanan Indonesia Bawal : Widya Riset Perikanan Tangkap Samakia: Jurnal Ilmu Perikanan
Dewa Gede Raka Wiadnya
Brawijaya University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Physics Social Sciences Other

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Molecular Analysis Using Cytochrome Oxidase Subunit I (COI) to Confirming New Recorded Oryzias hubbsi in Central East Java Ecoregion Akhsan Fikrillah Paricahya; Kiki Nur Azam Kholil; Rengga Retno Laila Saputri; Muh. Herjayanto; Dewa Gede Raka Wiadnya; Abd. Rahem Faqih; Agung Pramana Warih Marhendra
Jurnal Penelitian Pendidikan IPA Vol 10 No 7 (2024): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i7.6802

Abstract

Oryzias hubbsi's distribution is rarely discussed, as it is believed to only occupy the western part of Java, while its conservation status is Near Threatened (NT) as of 15 October 2018 on the IUCN red list. Specimens of O. hubbsi were recorded from Bandung and Jakarta in the description, other reports for O. hubbsi are commonly from Southern Sumatra-Western Java (SWJ) ecoregion in Java. However, an unexpected discovery of the genus Oryzias in Semarang freshwater opens up opportunities for the hidden spread of O. hubbsi to Central Java, and especially to other ecoregions which is Central and East Java (CEJ). Morphological approaches with distinctive O. hubbsi characters, complemented by molecular approaches with O. hubbsi samples from the Bogor population, confirmed similarities of species between both populations. Genetic distance using p-distances between both populations was below 2%, both populations made obvious clusters with a gap of 0.5%, and differed by five nucleotide base sites only. This new distribution record of O. hubbsi can be a foundation for conservation and domestication planning efforts.
STATUS STOK BELANGKAS PADI (CARCINOSCORPIUS ROTUNDICAUDA) DI PERAIRAN KOTABARU, KALIMANTAN SELATAN, INDONESIA Yogho Faiz Riadha; Ledhyane Ika Harlyan; Muhammad Arif Rahman; Feni Iranawati; Alvina Maharani; Dewa Gede Raka Wiadnya
BAWAL Widya Riset Perikanan Tangkap Vol 18, No 1 (2026): Maret 2026
Publisher : Politeknik Kelautan dan Perikanan Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/bawal.18.1.2026.13-22

Abstract

Small-scale shrimp fisheries in Kotabaru Regency, South Kalimantan, not only serve as a vital source of local economic support but also pose potential threats to the sustainability of non-target species caught as bycatch, including the mangrove horseshoe crab (Carcinoscorpius rotundicauda), which is protected in Indonesia. This study aimed to assess the stock status of Carcinoscorpius rotundicauda captured as bycatch in local shrimp fisheries. Data was collected from January to March 2025, with a total of 125 individuals. Results indicated that Carcinoscorpius rotundicauda exhibited a negative allometric growth pattern. The length at first capture ( ) was found to be lower than the length at first maturity ( ). Specifically, was 11.85 cm for trammel nets and 13.52 cm for crab gillnets, while  was 17.59 cm, suggesting that most individuals caught as bycatch had not yet reached gonadal maturity. This condition reflects fishing pressure on the population. Using the Length-Based Spawning Potential Ratio (LB-SPR) method to assess stock status of mangrove horseshoe crab that indicating overexploited (SPR<20). These findings highlight the urgent need for sustainable fisheries management, including regulations on fishing gear and protection measures for bycatch species such as Carcinoscorpius rotundicauda in Kotabaru waters.
Co-Authors A.P. Mahendra A.P.W Marhendra Abdul Rahem Faqih Agung Pramana Warih Marhendra Agus Tumulyadi Aisyiyah Nurmarina Bestari Akhsan Fikrillah Paricahya Ali Muntaha Alinda Putri Anggreini Alvina Maharani Andi Khofifah Nurfadillah Andik Isdianto Anik M. Hariati Arafik Lamadi Arief Darmawan Arief Setyanto Ating Yuniarti Buana Insan Kamil Budy Wiryawan C Anam Citra Satrya Utama Dewi Condro Puspo Nugroho Dyah Kinasih Wuragil Eko Sulkhani Yulianto Elsa Syafi’ul Umma Endang Yuli Herawati Feni Iranawati Feni Iranawati Fetriyani Fetriyani Fitri Nur Azizah Gatut Bintoro Happy Nursyam Hariati, Anik Martinah Indria Graha Hayuningtyas Irfan Miftahudin Kiki Nur Azam Kholil Kristina Marsela Ledhyane Ika Harlyan Lisa Nur Hidayah Maheno Sriwidodo Marsoedi Marsoedi Mihrobi Khalwatu Rihmi Muammar Kadhafi Muh. Arif Rahman Muh. Herjayanto Muhammad Dailami, Muhammad Nia Kurniawan Putri Inova Novita Putri Nur Azizah Rengga Retno Laila Saputri Septiana Sri Astuti Shima Ramadani Shofiatul Kholishoh Sunardi Sunardi Supriatna Supriatna Surya Dewa Ramadhan Tri Djoko Lelono Vian Dedi Pratama Wahyu Endra Kusuma Wildan Alfarizi Wirastika Adihapsari Yanti Suryanti Yogho Faiz Riadha