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All Journal BULETIN OSEANOGRAFI MARINA Research Journal of Life Science Samakia: Jurnal Ilmu Perikanan Advances in Tropical Biodiversity and Environmental Sciences Juvenil: Jurnal Ilmiah Kelautan dan Perikanan
Dewi Wulandari
Program Studi Bioteknologi Perikanan, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Pendidikan Ganesha
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary Other

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Activity of Compounds on Seaweed Eucheuma cottonii Extract as Antioxidant Candidate to Prevent Effects of Free Radical in Water Pollution Dewi Wulandari; Yuni Kilawati; Mohamad Fadjar
Research Journal of Life Science Vol 5, No 3 (2018)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.638 KB) | DOI: 10.21776/ub.rjls.2018.005.03.5

Abstract

Water pollution can make many problems such as, the incidence of disease and poisoning. Pollution in water can produce free radicals and it is can trigger of disease for aquatic organisms. There is some efforts that can be done to provide this problem, such as chemical compound that can reduce the reaction of free radicals. Antioxidants are one of the chemical compounds that can reduce the activity of free radicals. Eucheuma cottonii is the one of a seaweed that has many in antioxidant compounds, such as phenol compounds, but it is also rich in iodine fiber and other important minerals. The method used in this research is descriptive explorative and experimental method. This research was conducted with several stages of seaweed extraction. Identification of Eucheuma cottonii extract is using FTIR test. The last stage is an antioxidant activity test that includes DPPH test (1,1-diphenyl-2-picrilhidrazil) and Inhibition Concentration 50 (IC 50). The results obtained in this study were based on FTIR test of antioxidant compound in Eucheuma cottonii seaweed extract. The one of compounds that have antioxidant activity include galaktosa-4-sulfat. Based on the results of antioxidant activity test using DPPH obtained that seaweed extract Eucheuma cottonii active as an antioxidant to ward off free radicals in the waters. The concentration of Eucheuma cottonii seaweed extract for preventive 50% concentration of DPPH is 39,926 ppm.
Analysis Of Water Quality Conditions In Pearl Oyster (Pinctada maxima) Hatcheries in Karangasem Bali Dewi Wulandari; Made Dwipa Kusuma Maharani; Gede Iwan Setiabudi
Advances in Tropical Biodiversity and Environmental Sciences Vol 7 No 1 (2023): ATBES
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2023.v07.i01.p05

Abstract

Indonesia has a high potential for pearl oyster farming due to its diverse marine habitats, warm waters, and abundant supply of seaweed, which is the preferred food for pearl oysters. Indonesia is home to several species of pearl oysters, including the Pinctada maxima, which are prized for their large size and the quality of their pearls. Water quality plays a crucial role in the cultivation of Pinctada maxima. Factors such as temperature, pH, salinity, dissolved oxygen levels, and the presence of pollutants and pathogens can all impact the health and survival of Pinctada maxima. In addition to feed quality and seed availability, good water quality management is the key to the success of this biota seedling. This research was carried out by measuring parameters including temperature, salinity, pH, and dissolved oxygen levels in the waters temporally in the morning and evening every day of cultivation. Variables of ammonia, nitrite, total suspended solids, total bacteria, and vibrio bacteria were carried out once a week. The results of temperature measurements range from 28.2-290C. Measurement of total suspended solids 0 mg/l. pH measurements ranged from 8.1-8.3. Dissolved oxygen measurements ranged from 4.16-4.27 mg/l. Salinity measurements obtained results of 35 ppt. Ammonia measurements range from 0-1.55 mg/l. Nitrite measurements range from 0.012-0.026. Measurement of total bacteria obtained <1 X 101 cfu/ml from all samples. Measurement of total vibrio yielded <1 X 101 cfu/ml from all samples. Based on the research that has been done, the results show that water quality is still in the optimal range for pearl oyster (Pinctada maxima) hatchery activities.
Potensi Muck Dive di Perairan Kecamatan Buleleng Bali I Nyoman Dodik Prasetia; Gede Iwan Setiabudi; Kadek Lila Antara; Jasmine Masyitha Amelia; Gressty Sari Br Sitepu; Made Dwipa Kusuma Maharani; Dewi Wulandari; I Nyoman Suardana
Buletin Oseanografi Marina Vol 12, No 2 (2023): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v12i2.50061

Abstract

Kawasan Pesisir  Kecamatan Buleleng terdiri dari Pantai Desa Kalibukbuk, Anturan, Tukad Mungga, Pemaron, Baktiseraga, Banyuasri, Kaliuntu, Kampung Anyar, Kampung Bugis, Kampung Baru, Banyuning, dan Penarukan merupakan kawasan perairan yang berada di pusat Kabupaten Buleleng.  Perairan Kecamatan Buleleng memiliki karakteristik subsrat perairan berupa hamparan terumbu karang, patahan karang, pasir yang didominasi oleh pasir hitam, dan berlumpur.  Kondisi subsrat memiliki potensi pengembangan wisata muck dive sebagai alternatif wisata bahari yang berkelanjutan.  Muck dive merupakan jenis penyelaman yang dilakukan di subsrat berlumpur dengan berfokus untuk menemukan jenis langka dan samar yang jarang ditemukan di terumbu karang.  Penelitian bertujuan mengetahui potensi muck dive dengan memperkuat data identifikasi jenis, kelimpahan dan keanekaragaman organisme yang dapat dijadikan sebagai ikon obyek wisata selam.  Peneltian menggunakan metode underwater visual sensus dengan mengikuti line transect. Penelitian menunjukkan Perairan Kecamatan Buleleng memiliki potensi pengembangan wisata muck dive dengan karakteristik di setiap perairan desa yang beragam berdasarkan tipe subsrat perairan.  Kelimpahan dan keanekaragaman jenis organisme sebagai obyek muck dive tertinggi terdapat di Pantai Desa Baktiseraga, Banyuasri, dan Kaliuntu, sedangkan terendah di Desa Kampung Anyar, Kampung Bugis, Kampung Baru, Banyuning, dan Penarukan. Potensi wisata muck dive layak dikembangkan sebagai alternatif  wisata bahari yang dikelola secara berkelanjutan.   The coastal area of Buleleng districts consists of Kalibukbuk, Anturan, Tukad Mungga, Pemaron, Baktiseraga, Banyuasri, Kaliuntu, Kampung Anyar, Kampung Bugis, Kampung Baru, Banyuning, and Penarukan are water areas located in the center of Buleleng Regency. The Buleleng districts water have the characteristics of the water substrate in the form of coral reefs, coral fractures, sand dominated by black sand, and muddy. Substrate conditions have the potential to increase muck dive tourism as an alternative to sustainable marine tourism. Muck dive is a type of diving that is carried out in muddy substrates with a focus on finding rare and rare species that are rarely found in coral reefs. This study aims to determine the potential of muck dive by strengthening the identification data of species, abundance and diversity of organisms that can be used as icons of diving tourism objects. The research uses the underwater visual census method by following the line transect.The research shows that the Buleleng districts waters have the potential to develop muck dive tourism with different characteristics in each village waters based on the type of substrate. The highest abundance and diversity of organisms as muck dive objects was found in Baktiseraga, Banyuasri, and Kaliuntu Beaches, while the lowest was in Kampung Anyar, Bugis, Kampung Baru, Banyuning, and Penarukan villages. This potential to be the one of alternative for marine tourism which is must managed sustainably.
Uji Evektifitas Perendaman Air Kelapa Dengan Konsentrasi Berbeda Terhadap Maskulinisasi Ikan Guppy (Poecilia reticulata) Siluh Made Maria Theresia Putri Puspitha; I Nyoman Dodik Prasetia; Dewi Wulandari
Juvenil Vol 4, No 3: Agustus (2023)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v4i3.20443

Abstract

ABSTRAKPenelitian bertujuan menguji pengaruh dan konsentrasi air kelapa yang tepat untuk proses maskulinisasi ikan guppy. Penelitian menggunakan kuantitatif eksperimental rancangan acak lengkap (RAL) dengan 4 perlakuan dan tiga kali ulangan. Perlakuan terdiri dari: 20% air kelapa (A), 30% air kelapa (B), Hormone 17α-metiltestosterone 2 ppm (C), dan kontrol (D). Perendaman dilakukan pada larva berusia dua hari selama 24 jam. Pengamatan persentase kelamin jantan dilakukan dengan melihat gonopodium pada ikan guppy berumur 45 hari. Hasil analisis menunjukan bahwa pemberian air kelapa memberikan pengaruh berbeda nyata (P0,05) pada proses maskulinisasi ikan guppy. Persentase paling tinggi ditunjukan sebesar 58,03%±5,78c (C), 56,69%±6,05bc (B), 48,64%±1,17ab (D) dan 44,43%±3,51a (A). Perlakuan B (30% air kelapa) menghasilkan persentase jantan yang tidak berbeda nyata dengan perlakuan C (Hormone 17α-metiltestosterone 2 ppm). Tingginya persentase kelamin jantan pada perlakuan B yang diperoleh menunjukan penggunaan larutan air kelapa 30% memberikan peluang sebagai bahan alternatif Hormone 17α-metiltestosterone. Kelangsungan hidup selama perendaman yang tertinggi sampai terendah adalah 100% (C), 100% (D), 98,98% (A) dan 97,36% (B). Tingkat kelangsungan hidup selama pemeliharaan tertinggi sampai terendah adalah 96,49% (C), 96,32% (A), 95,59% (B) dan 93,85% (D). Hasil uji menunjukan air kelapa tidak berpengaruh nyata terhadap kelangsungan hidup ikan guppy selama perendaman dan pemeliharaan. Kata kunci: Air kelapa, maskulinisasi, larva ikan guppyABSTRACTThe purpose of this research was to test the influence and concentration of coconut water for the process of masculinizing guppy fish. This research used quantitative methods with a completely randomized design (CRD) consisting of 4 treatments and three replications. The treatment is coconut water 20% (A), coconut water 30% (B), 17α-metiltestosterone hormone 2 ppm (C), and control (D). This research conducted immersion on two-day old larvae for 24 hours. Observation of male percentage based on gonopodium in male guppy fish after 45 days of treatment. The result of the experiment gave significant differences (P0,05) in guppy masculinization. The highest percentage of male guppy were 58.03%±5.78c (C), 56.69%±6.05bc (B), 48.64%±1,17ab (D), and 44.43%±3.51a (A). Treatment B (coconut water 30%) has no significant difference with treatment C (17α-metiltestosterone hormone 2 ppm). The high percentage in treatment B was provided by 30% coconut water as an alternative 17α-metiltestosterone hormone. Survival rates in immersion from the highest were 100% (C), 100% (D), 98.98% (A), and 97.36% (B). Survival rates in maintenance from the highest were 96.49% (C), 96.32% (A), 95.59% (B) and 93.85% (D). The result showed coconut water had no significant effect on survival rate when immersioning and maintaning guppy fish. Keyword: Coconut water, masculinization, larvae of guppy fish
Pemantauan Kualitas Air: Analisis Logam Berat Timbal (Pb) dan Kadmiun (Cd) Guna Mendukung Kegiatan Perikanan Berkelanjutan di Perairan Jembrana, Bali Maharani, Made Dwipa Kusuma; Prasetia, I Nyoman Dodik; Wulandari, Dewi; Amelia, Jasmine Masyitha; Sitepu, Gressty Sari Br
Samakia : Jurnal Ilmu Perikanan Vol 15 No 2 (2024): Samakia: Jurnal Ilmu Perikanan
Publisher : Faculty of Science and Technology University Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/jsapi.v15i2.4621

Abstract

The purpose of this research was to identify heavy metals in Jembrana waters and analyze water quality to determine water fertility. This study used direct observation and quantitative descriptive. Primary production, biological chemical physical parameters, and heavy metal data were collected in this study. The results showed that Jembrana waters had the highest primary productivity value of 1051.01 mgC/m3/day and the lowest value of 112.61 mgC/m3/day. Water quality in Jembrana is considered quite good. The results of this study showed that the water conditions at the observation site remained stable and within the tolerance limits for marine biota. This is due to the fact that during the sampling period, there was no significant activity from fishermen and local residents. Observations of heavy metals lead and cadmium at the study site showed that some stations exhibited values that exceeded the threshold, but these values were still acceptable for the waters. The heavy metal levels at the stations exceeded the threshold due to sewage effluents from companies and ships in the local harbor.
Analisis Potensi Minawisata Dikawasan Pesisir Desa Bondalem Buleleng Bali Wulandari, Dewi; Prasetia, I Nyoman Dodik; Maharani, Made Dwipa Kusuma; Amelia, Jasmine Masyitah; Sitepu, Gressty Sari Br; Sutikno, Bambang; Wafi, Abdul
Samakia : Jurnal Ilmu Perikanan Vol 15 No 2 (2024): Samakia: Jurnal Ilmu Perikanan
Publisher : Faculty of Science and Technology University Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/jsapi.v15i2.5174

Abstract

Geographically, Buleleng Regency in North Bali has high potential coastal resources, with a coastline length reaching 157.05 km. Bondalem Village is in Tejakula District, Buleleng Regency, in the northern part of the Island of the Gods. The condition of the coral reefs in the Bondalem Waters area is categorized as very good, with coral reef cover percentages ranging from 65.93% to 81.33%. Besides having potential for diving tourism, Bondalem Village also boasts cultural attractions and local artistic wisdom. The purpose of this research is to identify the minatourism potential in Bondalem Village from the social aspect of the community. This research uses a descriptive quantitative method. The research process begins with the preparation of a proposal and the drafting of a questionnaire, followed by data collection, data processing, and data testing before drawing conclusions from the research activities. Based on research conducted on the potential of minatourism from the social aspect of the community in Bondalem Village, Buleleng, Bali, it is concluded that Bondalem Village in North Bali, specifically in Buleleng Regency, has minatourism potential that can be developed based on cultural, economic, and environmental assessments. The analysis of cultural, economic, and environmental aspects influencing minatourism potential, based on interviews with respondents, yielded scores of 3.253, 3.256, and 3.220, respectively, indicating that respondents support the development of minatourism potential in Bondalem Village from these aspects. This research is expected to provide useful input for various parties, especially the government, the Bondalem Village authorities, and researchers, to jointly support sustainable minatourism development.
Co-Authors Abdul Wafi Amelia, Jasmine Masyitah Gede Iwan Setiabudi Gressty Sari Br Sitepu Gressty Sari Br Sitepu I Nyoman Dodik Prasetia I Nyoman Suardana Jasmine Masyitha Amelia Kadek Lila Antara Made Dwipa Kusuma Maharani Mohamad Fadjar Siluh Made Maria Theresia Putri Puspitha Sutikno, Bambang Yuni Kilawati