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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences BIOTROPIA - The Southeast Asian Journal of Tropical Biology 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 Journal of Fisheries & Marine
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 Veterinary

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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.
Reproductive Cycle, Size at Maturity and Fecundity of Giuris margaritaceus in Limboto Lake Arafik Lamadi; Feni Iranawati; Maheno Sriwidodo; Dewa Gede Raka Wiadnya
Jurnal Ilmiah Perikanan dan Kelautan Vol. 16 No. 2 (2024): 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.v16i2.49345

Abstract

Graphical Abstract Highlight Research The size of the first mature gonads in hulu'u fish can be analyzed. Differences in sperm and egg size characterize sexual maturity. Sexual maturity is not influenced by season. Hulu'u fish have an asynchronous spawning type. Abstrack Understanding fish reproduction biology, particularly sexual maturity, the reproductive cycle, and fecundity, is useful for managing fisheries. The reproduction of Giuris margaritaceus in Limboto Lake is regrettably unknown. Over a year, fish specimens (N = 662) were gathered. They ranged in length from 6.5 to 20.9 cm (mean SD 10.9±2.5). Fecundity varied from 30,057 to 61,920. The first sexual maturity of male and female fish occurred at different sizes, 11.2 cm and 10.3 cm, respectively. This information is needed to determine this fish's lowest acceptable harvest length under the management aim to enter all-female fish for reproduction at least once. We estimated the reproductive of G. margaritaceus cycle using the size of the oocytes, histological analysis of the ovaries, and monthly mean GSI. These techniques produced the same reliable conclusion: G. margaritaceus can spawn yearly, with maximal between September and October. Based on this finding, spawners of Giuris margaritaceus can be kept from entering the reproductive stock between September and October. Future efforts to fine-tune fishing efforts for the effective management of G. margaritaceus may be aided by the study's findings.
Sustainability of Small-Scale Capture Fisheries Based on Coastal Vulnerability in Pangpang Bay, Banyuwangi Regency, Indonesia Ervina Wahyu Setyaningrum; Abu Bakar Sambah; Dewa Gede Raka Wiadnya
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 2 (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.v17i2.57946

Abstract

Graphical Abstract Highlight Research Climate change impacts on coastal vulnerability. Low coastal vulnerability in Pangpang Bay, Banyuwangi Regency. Sustainability of small-scale capture fisheries based on vulnerability. Sustainable small-scale fisheries management. Abstract Teluk Pangpang is one of the water areas that has considerable potential for capturing fisheriesin Banyuwangi Regency, Indonesia. On the other hand, climate change impacts the vulnerability of coastal areas and coastal communities, especially small-scale fishers. This study aims to analyse the coastal vulnerability of Pangpang Bay and formulate a sustainable development plan for small-scale capture fisheries in Pangpang Bay. The research method used a descriptive method with a quantitative approach. Data collection techniques used geographic information systems and focus group discussions (FGDs). The data analysis used was Coastal Vulnerability Index (CVI) analysis with a spatial approach and Participatory Prospective Analysis (PPA). From the CVI analysis, through the assessment of geomorphological parameters, erosion/accretion, coastal slope, distance of plants from the beach, wave height, and average tide range, the level of coastal vulnerability of Teluk Pangpang is included in the low category. Meanwhile, the PPA analysis resulted in seven variables that most influence the sustainability of small-scale capture fisheries, namely climate change, coastal vulnerability, coral reef area and density, number of small-scale fishers, catches, human resources of small-scale fishers, and management of small-scale fisheries resources. Furthermore, the formulation of the sustainability scenario of smallscale capture fisheries in Pangpang Bay is to minimise the impact of climate change and conduct disaster mitigation, improve the human resources of smallscale fishers, and equalise perceptions as outlined in the commitment between all interested parties and small-scale fishing communities.
Co-Authors A.P. Mahendra A.P.W Marhendra Abdul Rahem Faqih Abu Bakar Sambah Agung Pramana Warih Marhendra Akhsan Fikrillah Paricahya Ali Muntaha Alinda Putri Anggreini Andi Khofifah Nurfadillah Anik M. Hariati Arafik Lamadi Arief Darmawan 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 Ervina Wahyu Setyaningrum Feni Iranawati Fitri Nur Azizah Happy Nursyam Hariati, Anik Martinah Indria Graha Hayuningtyas Irfan Miftahudin Kiki Nur Azam Kholil Ledhyane Ika Harlyan Maheno Sri Widodo, Maheno Sri 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 Soemarno Soemarno Sunardi Sunardi Surya Dewa Ramadhan Veryl Hasan Wahyu Endra Kusuma Yanti Suryanti