Article Per Year (5 Year)
p-Index From 2021 - 2026
3.138
P-Index
This Author published in this journals
All Journal METAMORFOSA Journal of Biological Sciences Journal of Marine and Aquatic Sciences Jurnal Biologi Udayana Bumi Lestari Current Trends in Aquatic Science Samakia: Jurnal Ilmu Perikanan INTERNATIONAL JOURNAL OF ECONOMIC LITERATURE Zoologi: Jurnal Ilmu Peternakan, Ilmu Perikanan, Ilmu Kedokteran Hewan Advances in Tropical Biodiversity and Environmental Sciences
Ayu Putu Wiweka Krisna Dewi
Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan Dan Perikanan, Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary Other

Published : 26 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 26 Documents
Search

 1   2   3 
Pola pertumbuhan rumput laut (Eucheuma cottonii) yang menggunakan kantong dan tanpa kantong di perairan pantai Geger, Nusa Dua, Bali Made Tri Loka; Ayu Putu Wiweka Krisna Dewi; Ni Putu Putri Wijayanti
Jurnal Biologi Udayana Vol 27 No 2 (2023): JURNAL BIOLOGI UDAYANA
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBIOUNUD.2023.v27.i02.p01

Abstract

Penelitian ini dilakukan untuk mengetahui pola pertumbuhan rumput laut (Eucheuma cottonii) yang menggunakan kantong dan tanpa kantong di perairan pantai Geger pada bulan Oktober-November 2022. Pengambilan data dilakukan seminggu sekali selama 6 minggu penelitian. Metode budidaya yang digunakan dalam penelitian ini adalah metode lepas dasar dengan perlakuan menggunakan kantong dan tanpa kantong (konvensional). Penelitian ini di rancang dengan menggunakan Rancangan Acak Lengkap (RAL). Untuk mengetahui data SGR (laju pertumbuhan berat per hari) dapat dianalisis menggunakan uji One Way Anova, dengan tingkat signifikan 5% dari hasil analisisnya yaitu 95%. Uji statistik dibantu dengan menggunakan software SPSS PC. var 25.0. Hasil penelitian ini menunjukkan bahwa pertumbuhan rumput laut pada penggunaan kantong lebih tinggi dari tanpa kantong. Berat rumput laut pada penggunaan kantong di minggu ke-6 sebesar 666 g dan tanpa kantong di minggu ke-6 hanya sebesar 375 g. Specific Growth Rate (SGR) pada penggunaan kantong sebesar 5,53%/hari sedangkan perlakuan tanpa kantong sebesar 2,12%/hari. Hal ini terjadi karena banyak rumput laut yang patah akibat arus dan dimakan oleh predator pada perlakuan tanpa kantong. Parameter kualitas air yang diukur selama penelitian mendapatkan kisaran hasil yang sesuai untuk pertumbuhan rumput laut yaitu, suhu 26,7-30ºC, salinitas 31-35 ppt, pH 7,1-8,0, DO 5,9-6,7 mg/L, nitrat 0,034-0,057 mg/L, fosfat 0,011-0,066 mg/L, kecepatan arus 0,31-0,50 m/s dan kecerahan 60-107 cm. Nilai pengukuran nitrat dan fosfat di perairan Pantai Geger tergolong rendah namun masih dapat mendukung dalam kegiatan budidaya rumput laut. Pertumbuhan rumput laut pada penggunaan kantong lebih baik dari pada tanpa kantong dengan selisih berat sebesar 291 g pada akhir penelitian. Hasil ini masuk kategori baik dalam budidaya rumput laut.
LENGTH-WEIGHT RELATIONSHIP, GROWTH PATTERN AND CONDITION OF MIDAS CICHLID FISH (AMPHILOPHUS CITRINELLUS) IN LAKE BATUR, BANGLI REGENCY, BALI Putu Tegar Wiguna Putra; Ayu Putu Wiweka Krisna Dewi; Nyoman Dati Pertami
INTERNATIONAL JOURNAL OF ECONOMIC LITERATURE Vol. 2 No. 12 (2024): December
Publisher : Adisam Publisher

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

Abstract

Midas cichlid fish (Amphilophus citrinellus) is often referred to as a pest fish because it is a fish that can only prey but does not produce sufficient economic value, because it reproduces very quickly. This research aims to determine the length-weight relationship, growth patterns and condition of Midas cichlid fish as well as the water conditions of Lake Batur. The research was carried out using quantitative descriptive methods, with a purposive sampling method for sampling. The sampling locations were at three stations. The fishing gear used is gill nets. The total number of fish caught during data collection was 287 individuals. Based on the results of the analysis of the length-weight relationship of midas cichlid fish (Amphilophus citrinellus) in Lake Batur, the equation W=0.0215L2.92 was obtained, where from this equation the value b = 2.92 was obtained. The t test was carried out and it was found that the b value was <3 so it could be concluded that the growth pattern was negative allometric. The relative condition (Kn) of male and female Midas cichlid fish in Lake Batur is in good condition (1.01), with a less flattened body shape (fusiform). The condition of the water parameters in Lake Batur during the research was classified as good and stable for the survival of aquatic biota, one of which was the Midas cichlid fish with a pH value of 7.1-7.5; DO 5.3-6.5 mg/L; Temperature 27.8-29.6°C and brightness 1.5-1.9 m.
Effect of Different Stocking Density on the Growth of Catfish (Clarias gariepinus) in Aquaponics Budikdamber System Yopie Ryan Audy Harahap; Pande Gde Sasmita Julyantoro; Ayu Putu Wiweka Krisna Dewi
Advances in Tropical Biodiversity and Environmental Sciences Vol. 7 No. 2 (2023): June 2023: Pages 40-86
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.i02.p01

Abstract

Budikdamber (fish farming in buckets) is an innovation from the aquaponics system that is carried out to keep catfish (C. gariepinus) and plants in the same container. In the Budikdamber system, it is important to pay attention to the high and low density of fish stocking because the rearing container used is a bucket. The purpose of this research was to determine the growth rate and survival rate of catfish at different stocking densities. This research was conducted with 3 treatments and each treatment had 3 repetitions, treatment A (40 fish/m3), treatment B (80 fish/m3), and treatment C (120 fish/m3). The observations showed that the highest specific growth rate of catfish was found in treatment A with a value of 12.74%, followed by treatment B 12.55% and treatment C 12.20%. The highest survival rate of catfish was found in treatment A, which was 90.8%, followed by treatment B at 87.9%, and treatment C at 86.7%. The highest feed conversion ratio (FCR) of catfish was found in treatment B, which was 0.475, followed by treatment A at 0.445, and the lowest FCR value was found in treatment C, which was 0.368. Water quality parameters measured during observations included dissolved oxygen (DO), temperature, acidity (pH), nitrite and nitrate, where all water quality parameters were still considered optimal for growth and survival of catfish.
Effectiveness of Automatic Feeder in Catfish Cultivation (Clarias gariepinus) with Biofloc System Alfajri Yuda Permana; Ayu Putu Wiweka Krisna Dewi; Gde Raka Angga Kartika
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.p08

Abstract

Catfish is a popular fish species in the community and is cultivated by many people. Catfish are considered superior to other freshwater fish. One system that can improve catfish quality and ability is the biofloc system. Biofloc system is considered more effective compared to other systems because it increases the productivity of cultivated fish. Unfortunately, cultivation in general is considered a traditional system that only uses manpower to do all activities such as feeding. One application of feeding technology is automated feeding machines. This research is aimed to determine the effectiveness of the automatic feeder on catfish cultivation with biofloc system. The research method was experimental and compared 2 treatments, which were A (biofloc without an automatic feeder) and B (biofloc with an automatic feeder). Fish samples used were 5-7 cm in size and reared for 44 days at the cultivation pond of Marine and Fisheries Faculty, Udayana University. The results of this research are SGR, FCR, and SR. Based on the results, treatment B had better SGR (3.37%), FCR (2.03) and SR (45%) compared to treatment A. The conclusion of this research is the usage of automatic feeder in catfish cultivation with biofloc system has better results than without the usage of automatic feeder.
Identification of Eucheuma cottonii Seaweed Destruction Organisms at Geger Beach Nusa Dua, Bali Nike Aryanta Manalu; I Wayan Arthana; Ayu Putu Wiweka Krisna Dewi
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.p09

Abstract

Eucheuma cottonii seaweed cultivation in general has a problem that is the attack of disruptive organisms in the form of pests that can cause damage to seaweed plants. This study aims to find out the type, behavior and abundance of seaweed destruction organisms on Eucheuma cottonii. Observations were made at 3 points of stakes in the coastal waters of Geger Nusa Dua, Bali. Data collection was conducted through direct observation at the research site using the Underwater Visual Census (UVC) method. The results of the data collection found 19 families of organisms that were self-exposedfrom 17 families of disruptive organisms and 2 families of non-disruptive organisms from 3 points of observation. The disruptive organisms found were: Siganidae, Holothuridae, Pinguipedidae, Labridae, Blenniidae, Paralepididae, Trichiuridae, Palmariaceae, Ulvaceae, Siphonocladaceae, Cladophorales, Caulerpaceae, Halimedaceae, Gelidiaceae, Hypneaceae, Hydrocharitaceae and Corallinaceae. While non-disruptive organisms found were Engraulidae and Scorpaenidae. Disruptive organisms have individual living behaviors (solitary) and swimming habits of disruptive organisms that swim above and crevices of seaweed Eucheuma cottonii. Treatment of disruptive organisms that feed on talus and attach / epiphytes on the surface of seaweed talus Eucheuma cottonii. The conclusion is individual abundance in stake II had an abundance of disruptive organisms with the highest result of 3.88 ind/m2, while in stake I obtained the lowest abundance calculation of 2.34 ind/m2,and in stake III which was 2.62 ind/m2.
Pertumbuhan Mangrove Rhizophora apiculata pada Pembibitan Mangrove di Kelompok Segara Ayu, Kedonganan, Bali Hamdan Hamdan; Ni Made Ernawati; Ayu Putu Wiweka Krisna Dewi
Zoologi: Jurnal Ilmu Peternakan, Ilmu Perikanan, Ilmu Kedokteran Hewan Vol. 4 No. 1 (2026): Januari: Zoologi: Jurnal Ilmu Peternakan, Ilmu Perikanan, Ilmu Kedokteran Hewan
Publisher : Asosiasi Riset Ilmu Tanaman dan Hewan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/zoologi.v4i1.300

Abstract

This research aims to determine the growth of Rhizophora apiculata mangroves based on height, number of leaves and stem diameter in mangrove nurseries in the Segara Ayu Group, Kedonganan, Bali. The research was conducted for six months, from March to August 2025, using quantitative descriptive methods. Observations were made on 40 plants spread across four demonstration plots, with data collected every two weeks. The environmental parameters measured include temperature and salinity. The results showed that the absolute growth in plant height ranged between 27–31 cm, with relative growth of 27.4–33.7%. The average number of leaves reaches 11 to 18 pieces, while the stem diameter ranges from 1.7–2.7 cm. Environmental conditions at the research location are classified as supporting optimal growth, with salinity of 24–28 ppt and temperature of 28–31°C, In general, Rhizophora apiculata plants show good growth during the nursery period, which indicates that the Segara Ayu location has ecological conditions that are suitable for mangrove rehabilitation activities.
Co-Authors Akbar Akbar Alfajri Yuda Permana Annisa Nur Safitri Utomo Arliza Cynthia Razali Devita Eka Saputri Dewa Adi Putra Dewa Ayu Angga Pebriani Endang Wulandari Suryaningtyas Gde Raka Angga Kartika Gede Pasek Sutedja Gusti Ayu Manik Pradnyani Hamdan Hamdan I Putu Eka Mahendra I Wayan Arthana I Wayan Arthana Ifan Martin Nopem Ima Yudha Perwira Juan Aldo Jaya Pradipta Sitepu Lisa Rosalia Prayuda Made Tri Loka Ni Desak Putu Dita Herlinawati Ni Desak Putu Ida Suryani Ni Luh Watiniasih Ni Made Ernawati, Ni Made Ni Pande Putu Suji Dian Antari Ni Putu Putri Wijayanti Ni Putu Sintha Maharani Nike Aryanta Manalu Nyoman Dati Pertami Octria Vesensia Pande Gde Sasmita Julyantoro Putri Febrine Nainggolan Putu Tegar Wiguna Putra Rani Ekawaty Resti Ayu NengTias Suprabadevi Ayumayasari Saraswati Yesi Breanita Yopie Ryan Audy Harahap Yuli Krisnawati Yuni Debora Prasicilia Sitorus