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All Journal BULETIN OSEANOGRAFI MARINA Prosiding Seminar Nasional MIPA Journal of Marine Research JFMR (Journal of Fisheries and Marine Research) Biosaintifika: Journal of Biology & Biology Education Journal of Tropical Marine Science Jurnal ENMAP QISTINA: Jurnal Multidisiplin Indonesia Jurnal Multidisipliner Kapalamada Jurnal Perikanan Advances in Tropical Biodiversity and Environmental Sciences
Gede Iwan Setiabudi
Universitas Pendidikan Ganesha
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Pemanfaatan Citra Satelit Resolusi Tinggi pada Google Earth Pro dan SIG untuk Deteksi Kerusakan Infrastruktur Jalan dan Bangunan Akibat dari Abrasi di Pantai Pebuahan, Desa Banyubiru Bagus Arya Yoga Bharata, Ida; Atmaja, Dewa Made; Gunamantha, I Made; Christiawan, Putu Indra; Setiabudi, Gede Iwan
Jurnal ENMAP (Environment and Mapping) Vol. 6 No. 01 (2025): Maret 2025, Jurnal ENMAP
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The coastal environment in some parts of Indonesia's coast is vulnerable to coastal dynamics, one of which is abrasion which threatens the organization at Pebuahan Beach, Banyubiru Village, Negara, Jembrana, Bali Island. The objectives of this research are 1) detecting environmental damage to road infrastructure and buildings resulting from abrasion at Pebuahan Beach, and 2) mapping environmental damage to road infrastructure and buildings resulting from abrasion at Pebuahan Beach. The research carried out was exploratory descriptive research using CSRT data available on Google Earth Pro at 3 different times, namely 2009, 2016, and 2023, which were collected through visual interpretation and digitization on the screen and then analyzed using a spatial approach. The research results showed that 184 buildings were washed away and 28 buildings were damaged during the 2009-2023 period. The percentage of buildings that were washed away and damaged was a total of 30% of buildings affected by abrasion during the 2009-2023 period. Apart from that, damage to road infrastructure covering 675.57 meters was washed away and 268.31 meters was damaged, or if combined, it reached 25% of the existing roads in the Pebuahan Beach residential area during the 2009-2023 period. The continuing damage that occurs makes it necessary to take concrete steps to address the large number of buildings and infrastructure that have been lost.
Pengaruh Ekstrak Kulit Bawang Merah Terhadap Daya Hambat Bakteri Aeromonas hidrophilla Penyebab Penyakit Pada Ikan Secara In Vitro Pranata, Andi Welly Wiliandhana; Swasta, Ida Bagus Jelantik; Setiabudi, Gede Iwan
Journal of Tropical Marine Science Vol 8 No 1 (2025): Journal of Tropical Marine Science (on going)
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jour.trop.mar.sci.v8i1.5739

Abstract

Aeromonas hydrophila, commonly found in aquatic environments, is a Gram-negative bacterium frequently pathogenic to fish, causing diseases such as hemorrhagic septicemia or Motile Aeromonas Septicemia (MAS) in various freshwater fish species. This study investigated the antibacterial potential of red onion skin extract (Allium cepa L.) extracted using 99% absolute alcohol against the growth of Aeromonas hydrophila. The experiments were conducted with varying extract concentrations of 5%, 10%, 15%, 20%, and 25%, using tetracycline as a control. The results demonstrated that the red onion skin extract was able to inhibit the growth of Aeromonas hydrophila, as indicated by the formation of inhibition zones around the growth media. The average diameters of the inhibition zones produced by the extract at concentrations of 5%, 10%, 15%, 20%, and 25% were 1.21 mm, 2.43 mm, 3.36 mm, 5.70 mm, and 6.23 mm, respectively. Statistical analysis using a One-way ANOVA test with SPSS software showed a p-value of 0.000, indicating a significant difference among the red onion skin extract concentrations. Therefore, a Least Significant Difference (LSD) post-hoc test was performed to identify specific differences between the concentration treatments
“ULVA” PENGEMBANGAN TEKNIK PENANDA ALAMI PADA BUDIDAYA ABALON (Haliotis squamata) Permana, Gusti Ngurah; Rusdi, Ibnu; Wibawa, Gigih Satria; Setiabudi, Gede Iwan
JFMR (Journal of Fisheries and Marine Research) Vol. 5 No. 1 (2021): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2021.005.01.7

Abstract

"ULVA" NATURAL MARKING TECHNIQUES DEVELOPMENT IN ABALONE CULTURE (Haliotis squamata)  By  Gusti Ngurah Permana,, Ibnu Rusdia,  Gigih Satria Wibawaa and Iwan SetyabudibTagging is used to obtain some information during the process of selecting and managing population of abalone shells, Haliotis squamata. This research was conducted to determine the natural marker method of abalone, (H. squamata). The samples were used of  total length of the shell (initial average: 0.8 ± 0.2 mm).  Seed tagging using the Ulva sp. performed by giving a sequence of feed at the age of: 2-3 months (Ulva sp.), 3-4 months (Gracilaria sp.), 5-6 months (Ulva sp.), 6-10 months (Gracillaria sp.) and control 2 months (Ulva sp.), 3-10 months (Gracilaria sp.). The results of this study indicated that the tagging of the seeds with the Ulva method has a same growth pattern in both  treatment and control (38.93 ± 1.5 mm; 39.47 ± 1.44 mm). The effectiveness of Ulva tagging is seen in toca color finder (TC. 4103 green) and (TC 8135 brown), more sharpen in treatment compared to control. Ulva tagging technology can be applied to abalone seeds to see the sequence of the green color on the shell.  
KONDISI PADANG LAMUN DI PESISIR BALI UTARA BERDASARKAN JUMLAH SPESIES, JUMLAH ALGA, DAN PERSENTASE TUTUPAN Wigdati, Nuryani; Setiabudi, Gede Iwan; Ampou, E. Elvan; Surana, I Nyoman
JFMR (Journal of Fisheries and Marine Research) Vol. 5 No. 2 (2021): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2021.005.02.33

Abstract

Identifikasi kondisi padang lamun di perairan Bali Utara telah dilakukan pada Agustus dan September 2020 di Sumberkima, Lovina, Panimbangan, dan Pacung. Tujuan kajian ini untuk mengidentifikasi kondisi padang lamun di perairan Bali Utara berdasarkan jumlah jenis lamun, persentase tutupan lamun, dan jumlah jenis alga. Metode transek garis tegak lurus garis pantai serta foto atau video diaplikasikan untuk pengambilan ketiga jenis data tersebut. Analisis kondisi lamun dilakukan dengan metode penilaian dan pembobotan. Di keempat lokasi ditemukan sebanyak enam jenis lamun yang berasal dari dua famili yaitu Hydrocharitaceae dan Cymodoceaceae. Famili Hydrocharitaceae diwakili oleh Enhalus acoroides (Ea), Thalassia hemprichii (Th), Halophila ovalis (Ho), dan Cymodocea rotundata (Cr), sementara famili Cymodoceaceae terdiri dari Syringodium isoetifolium (Si) dan Halodule uninervis (Hu). Jenis paling beragam ditemukan di Lovina dengan rata-rata persentase tutupan 60% dan paling sedikit di Panimbangan dengan rata-rata tutupan 52%. Hasil pembobotan pada komponen jenis lamun, jenis alga, dan persentase tutupan menunjukan bahwa kondisi lamun di Lovina dalam kondisi paling baik dengan jumlah skor 13. Kondisi lamun di Sumberkima dalam kondisi sedang (skor 11), sedangkan di Panimbangan dan Pacung dalam kondisi buruk dengan skor 7. Kondisi kualitas air pada saat dilakukan pengamatan di keempat lokasi penelitian dalam kondisi yang baik untuk mendukung kehidupan lamun. Penelitian lanjutan dengan menambahkan dan mempertimbangkan parameter lingkungan lainnya sebagai komponen untuk menilai kondisi dan status lamun di Bali Utara. Identification of seagrass beds condition in North Bali waters (Sumberkima, Lovina, Panimbangan, and Pacung) was carried out in August and September 2020. This study aims to identify the condition of seagrass beds in North Bali waters based on the number of seagrass species, the percentage of seagrass cover, and the number of algae species. We performed line transects as well as photos or videos to collect data on seagrass and algae. Seagrass ecosystem condition was analyzed by using the scoring and weighting method. Six species originating from two families,  Hydrocharitaceae and Cymodoceaceae, have been identified.  Hydrocharitaceae family represented by Enhalus acoroides (Ea), Thalassia hemprichii (Th), Halophila ovalis (Ho), and Cymodocea rotundata (Cr), while the Cymodoceaceae consists of Syringodium isoetifolium (Si) and Halodule uninervis (Hu). The most diverse species were found in Lovina with an average percentage cover of 60% and the least is in Panimbangan (52%). The scoring and weighting results showed that the seagrass conditions in Lovina were in the best condition with a total score of 13. The condition of the seagrass in Sumberkima was moderate (score 11), while in Panimbangan and Pacung were in bad condition with a score of 7. The condition of water quality at the time of observation was in good condition to support seagrass life at all research sites. Further research by adding and considering other environmental parameters as a component in assessing the condition and status of seagrass in North Bali.
The Effectiveness Of Citric Acid As An Anti-Ectoparasite Of Marine Leech (Zeylanicobdella arugamensis) Through Soaking Nike Mustika Sari; Gede Iwan Setiabudi; Indah Mastuti; Ketut Mahardika
Advances in Tropical Biodiversity and Environmental Sciences Vol. 7 No. 3 (2023): October 2023: Pages 87-124
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2023.v07.i03.p04

Abstract

Zeylanicobdella arugamensis infection causes health problems for cultured grouper. This study aims to determine the effectiveness of citric acid soaking as an anti Z. arugamensis ectoparasite. A total of ±120 Z. arugamensis were isolated from sick hybrid grouper (Epinephelus fuscoguttatus x E. lanceolatus) placed in Petri dishes (6 Petri dishes). Citric acid solution with 0, 50, 100, 150, 250, and 400 ppm was added to the petri plates. Immersion of Z. arugamensis was carried out for 30, 60, 90 and 120 minutes. Each 30 Z. arugamensis/treatment/30 minutes was taken and placed in 3 petri dishes (10 individuals/petri dish) filled with seawater. Observations were made on the response of Z. arugamensis. Comments were made on cocoon development into larvae. The citric acid safety test was conducted on cantang hybrid grouper infected with Z. arugamensis. A total of 3 test fish were soaked with citric acid solution in seawater at concentrations of 0, 150, 250, and 300 ppm. Observations of fish condition were made after 30 and 60 minutes of immersion. The results showed that citric acid concentrations of 250 and 400 ppm effectively killed Z. arugamensis (76.67±15.28-100%), and their cocoon development reached (0%). A citric acid concentration of 300 ppm is still safe to use for immersion of cantang hybrid grouper infected with Z. arugamensis for 60 minutes. Citric acid concentrations of 250-300 ppm can also release Z. arugamensis from the fish body. Citric acid has antiparasitic properties and lowers the pH of seawater.
Impact of the COVID-19 Pandemic on the Management of Coral Aquaculture Alexander Regio Widarto; I Nyoman Dodik Prasetia; Gede Iwan Setiabudi
Advances in Tropical Biodiversity and Environmental Sciences Vol. 8 No. 1 (2024): February 2024: Pages 1-57
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2024.v08.i01.p06

Abstract

This research aims to determine the impact of the COVID-19 pandemic on coral aquaculture businesses and management strategies in dealing with the pandemic. This research was a quantitative descriptive research. This research used the triangulation method (questionnaire, interview, and observation). This research was conducted at three coral aquaculture companies and a cultured coral transplantation site owned by a private company in Bali. The results showed that the COVID-19 pandemic had a more favorable impact on the coral aquaculture industry, such as the ability to become a source of income for the locals during the pandemic. The difficulties in conducting export activities and restricted mobility were some of the challenges encountered by coral aquaculture businesses during the pandemic. Additionally, the results showed that in order for coral aquaculture businesses to survive the pandemic, management strategies and adaptations are needed.
Analysis of the Distribution of White Spot Syndrome Virus (WSSV) in Vannamei Shrimp (Litopenaeus vannamei) in Bali: Water Quality and PCR Study Billy Andri Agrifa Barus; Gede Iwan Setiabudi; Hamdanul Fain
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 3 (2025): October 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i03.p09

Abstract

White Spot Syndrome Virus (WSSV) is a pathogen responsible for white spots, typically 0.5–2 mm in diameter, on the shrimp cephalothorax. WSSV is capable of causing mass mortality rates of up to 100% within 3 to 10 days of symptom onset. The rapid transmission and detection challenges associated with WSSV have resulted in significant economic losses for Indonesian shrimp farmers. In Bali, Litopenaeus vannamei (Vannamei shrimp) is the second-largest marine aquaculture commodity after seaweed, with major seed production centered in the Gerokgak and Seririt Districts of Buleleng Regency. Given the difficulty in controlling WSSV, identifying its emergence and characteristics is critical. This study aimed to determine the distribution of WSSV in Bali by examining the relationship between water quality and Polymerase Chain Reaction (PCR) detection results, and by analyzing the correlation between water quality, WSSV incidence, and mortality rates in monitoring ponds. The research focused on PCR analysis and water quality assessment of Vannamei shrimp from the Karangasem, Buleleng, and Jembrana Regencies, conducted by the Indonesian Quarantine Agency (BKI). Water quality parameters, including temperature, transparency, pH, DO, salinity, nitrite, nitrate, ammonia, and phosphate, were measured using test kits. The study detected no WSSV during the examination period. PCR analysis showed amplification products ranging from 200 to 400 bp, distinct from the standard WSSV-positive marker at 941 bp. Furthermore, all water quality samples met the criteria and compliance parameters established by the Animal, Fish, and Plant Quarantine Center (BBKKIT).
Analisis Sebaran Infeksi Megalocytivirus Penyebab Penyakit pada Komoditas Ikan Kerapu Budidaya di Kabupaten Buleleng Hutapea, Krisna Meilani Mararta; Setiabudi, Gede Iwan; Sari, Gressty
QISTINA: Jurnal Multidisiplin Indonesia Vol 4, No 2 (2025): December 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/qistina.v4i2.7413

Abstract

Ikan kerapu merupakan komoditas budidaya laut yang menonjol dengan nilai ekonomi tinggi, khususnya di Bali sebagai pusat produksi ekspor utama. Namun, keberlanjutan budidaya kerapu sering terancam oleh penyakit menular, terutama megalocytivirus, yang dapat menyebabkan kematian massal pada populasi ikan. Penelitian ini bertujuan untuk menilai status infeksi dan distribusi geografis megalocytivirus pada ikan kerapu budidaya di Bali. Sampel ikan dikumpulkan dari tambak budidaya di Kabupaten Buleleng dan dianalisis melalui Polymerase Chain Reaction (PCR) di Balai Besar Karantina Hewan, Ikan dan Tumbuhan Bali. Selain itu, parameter kualitas air termasuk suhu, pH, oksigen terlarut (DO), salinitas, nitrit, nitrat, amonia, dan fosfat diukur untuk mendukung analisis. Hasil menunjukkan bahwa semua sampel yang diuji negatif terhadap infeksi megalocytivirus, dengan kondisi air tetap sesuai untuk budidaya kerapu. Temuan ini menunjukkan status ikan kerapu yang relatif sehat di Bali. Meskipun demikian, pemantauan rutin dan langkah-langkah biosekuriti yang ketat sangat penting untuk mencegah potensi wabah di masa mendatang.
ANALISIS FOOD CONVERSION RATIO (FCR) IKAN NILA (OREOCHROMIS NILOTICUS) PADA SISTEM KERAMBA JARING APUNG DI DANAU BATUR Darma, Kadek Yogi Anugerah Prawira; Setiabudi, Gede Iwan; Marantika, Alexander Korinus
Jurnal Multidisipliner Kapalamada Vol. 5 No. 01 (2026): JURNAL MULTIDISIPLINER KAPALAMADA
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/kapalamada.v5i01.2277

Abstract

Nile tilapia (Oreochromis niloticus) is a leading commodity in Lake Batur; however, its production sustainability is challenged by fluctuations in feed efficiency among farmers. This study aims to analyze production performance, particularly Feed Conversion Ratio (FCR) and Survival Rate (SR), spatially and to identify the technical and biological factors influencing them. A descriptive quantitative method with an ex-post facto approach was applied to 20 farmers across four regions (West, East, North, and South). The One-Way ANOVA test results indicated significant differences (p < 0.05) in FCR values among locations. The western region showed the best efficiency (FCR 1.06 ± 0.18; SR 66%), while the eastern region recorded the lowest (FCR 1.39 ± 0.03). Regression analysis revealed that rearing duration had a significant effect (p = 0.010), indicating the role of natural feed such as periphyton. Inefficiency in the eastern region was associated with phantom feeding due to high initial mortality. Recommended strategies include improved seed management, optimization of natural feed, and periodic fasting practices.
ANALISIS ISI PERUT IKAN NILA (OREOCHROMIS NILOTICUS) DI KERAMBA JARING APUNG (KJA) DANAU BATUR, BALI Saraswati, Ni Komang Lina Tetri; Setiabudi, Gede Iwan; Fain, Hamdanul
Jurnal Multidisipliner Kapalamada Vol. 5 No. 01 (2026): JURNAL MULTIDISIPLINER KAPALAMADA
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/kapalamada.v5i01.2286

Abstract

This study aims to identify feed composition and analyze the Frequency of Occurrence (FO) of both natural and artificial feed in the digestive tract of Nile tilapia. The research employed a quantitative descr iptive approach with purposive sampling techniques, in which 40 fish (150–300 g) were collected from four geographical locations (North, South, East, and West). The digestive tract contents were preserved using 4% formalin and identified using a binocular microscope (10×–40× magnification). The results revealed a broad dietary spectrum consisting of 20 taxa, dominated by Bacillariophyceae, Chlorophyceae, Zygnematophyceae, Cyanobacteria, and Zooplankton. Four taxa exhibit ted an absolute FO value of 100%: Nitzschia sp., Chlorella sp., Microcy stis sp., and Brachionus sp., while pellet fragments showed a relatively low FO value of only 10%. The presence of periphytic organisms (Epithe mia sp., Navicula sp.) and benthic mites (Hydrachnidia sp.) indicates active grazing behavior of fish on the floating net cage structures. The consistent presence of Microcystis sp. acts as a bioindicator of eutrophic ation in Danau Batur. Concludes that Nile tilapia cultured in floating net cages still significantly utilize natural feed resources, thereby providing opportunities to improve the efficiency of artificial feeding management.
Co-Authors Alexander Korinus Marantika Alexander Regio Widarto Ampou, E. Elvan Bagus Arya Yoga Bharata, Ida Billy Andri Agrifa Barus Darma, Kadek Yogi Anugerah Prawira Dewa Made Atmaja Dewi Wulandari Dietriech G. Bengen Dietriech Geoffrey Bengen E. Elvan Ampou Fain, Hamdanul Gede Merta Gigih Satria Wibawa Gressty Sari Br Sitepu Gressty Sari Br Sitepu Gusti Ngurah Permana Gusti Ngurah Permana Hamdanul Fain Hefni Effendi Hutapea, Krisna Meilani Mararta I Gede Wahyu Permana I Made Gunamantha I Made Merdana I Made Oka Riawan I Nyoman Dodik Prasetia I Nyoman Dodik Prasetia I Nyoman Suardana I Nyoman Surana I Putu Mangku Mariasa I Putu Mangku Mariasa Ibnu Rusdi Ibnu Rusdi Ida Bagus Jelantik Swasta Indah Mastuti Indah Mastuti Jasmine Masyitha Amelia Kadek Leni Widiartini Kadek Lila Antara Kadek Lila Antara Kadek Teguh Wirasastra Ketut Mahardika Ketut Mahardika Ketut Mahardika Ketut Mahardika Khairiyah, Rizky Aldi Zulfaizi Made Dwipa Kusuma Maharani Maria Niken Tri Ubaya Sakti Mariasa, I Putu Mangku Mastuti, Indah Merta, Gede Meutia Samira Ismet Ni Putu Nadya Susanti Nike Mustika Sari Nuryani Wigdati Ocky Karna Radjasa Ocky Karna Radjasa Pranata, Andi Welly Wiliandhana Putu Herdi Putrawan Putu Indra Christiawan Rizky Aldi Zulfaizi Khairiyah Sakti, Maria Niken Tri Ubaya Saraswati, Ni Komang Lina Tetri Sari, Gressty Sari, Susi Puspita Surana, I Nyoman Susi Puspita Sari Wibawa, Gigih Satria Wigdati, Nuryani