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All Journal Journal of Marine and Aquatic Sciences Bumi Lestari Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Sumberdaya Akuatik Indopasifik Acta Aquatica: Aquatic Sciences Journal Current Trends in Aquatic Science Sricommerce: Journal of Sriwijaya Community Services Jurnal Media Akuakultur Indonesia Journal of Fisheries & Marine Advances in Tropical Biodiversity and Environmental Sciences
Gde Raka Angga Kartika
Program Studi Manajemen Sumberdaya Perairan (Department Of Aquatic Resources Management) Universitas Udayana
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Veterinary Other

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The Effect of Eye-stalk and Anti-dopamine on Number of Eggs and Nauplii Production in Vannamei Shrimp (Litopenaeus vanammei) Jovita Larasati Poetri Tajuw; Pande Gde Sasmita Julyantoro; Gde Raka Angga Kartika
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 1 (2025): February 2025: Pages 1-66
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.i01.p05

Abstract

One of the shrimp commodities in high demand on the global market is the vannamei shrimp (Litopenaeus vannamei), and Indonesia is one of the leading countries in shrimp production. To improve the growth and quality of vannamei shrimp production, farming techniques continue to be developed. The practice of eye-stalk cutting on shrimp, also known as eyestalk-cutting, has become a technique actively employed in shrimp farming. However, it is considered a violation of animal welfare regulations. Anti-dopamine is another alternative that can inhibit the gonad maturation inhibiting hormone and improve shrimp reproductive performance. This study aims to determine the effect of eye stalk and anti-dopamine injection on the comparison of egg and nauplii production as well as the hatching rate carried out at Balai Produksi Induk Udang Unggul dan Kekerangan (BPIU2K) in Karangasem, Bali. The research method employed was experimental, with data analysis conducted using an independent t-test. The results showed that eye-stalk produces ±269,000 eggs with a hatching rate (HR) of 26.13%, while anti-dopamine can produce up to ±91,600 eggs with an HR of 83.31%. Total nauplii production from eye-stalk treatment reached ±75,000, and anti-dopamine nauplii production reached ±77,100. T-test results with a 95% significance level indicate a difference in the number of eggs but no significant difference in total nauplii production
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.
Chromium (Cr) Content In Water, Gills, and Muscles of Tilapia Fish (Oreochromis niloticus) in Tukad Badung, Bali Sebayang, Alfani; Sari, Alfi Hermawati Waskita; Kartika, Gde Raka Angga
Advances in Tropical Biodiversity and Environmental Sciences Vol. 10 No. 1 (2026): February 2026 (in progress)
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.2026.v10.i01.p03

Abstract

Increased human activity along the Tukad Badung River affects the quality of the river's water. One of the causes is waste from various anthropogenic activities containing heavy metals, which can affect the quality of water and the organisms living in it. The purpose of this study was to determine the chromium (Cr) content in water and tilapia (Oreochromis niloticus). The study was conducted in the Tukad Badung River from February to March 2023. The sampling technique used the time-composite and sample-composite methods. The results of the study showed that the Tukad Badung waters were not polluted, as the Cr content did not exceed the thresholds set by Government Regulation of the Republic of Indonesia No. 82 of 2001 and Bali Governor Regulation No. 8 of 2007. Meanwhile, the Cr content in the muscles of tilapia at station II was 0.036 mg/L, and at station III, it was 0.727 mg/L in the muscles and 2,220 mg/L in the gills. The highest Bioconcentration Factor (BCF), which was found in the gills of tilapia, was 74, but the level of Cr accumulation ability at all stations in the Tukad Badung waters was still classified as a low accumulative category.
Co-Authors Aida Sartimbul Alfajri Yuda Permana Alfi Hermawati Waskita Sari Astriani, Ni Luh Ayu Gita Ayu Putu Wiweka Krisna Dewi Ayu Putu Wiweka Krisna Dewi, Ayu Putu Wiweka Krisna Defri Yona Endang Wulandari Suryaningtyas Erfan Rohadi Feni Iranawati, Feni Gede Dwi Sukmawantara Hanif Abdullah Hapsari Mahatmi Hendiari, I Gusti Ayu Diah Hikmah Nurazizah I Gusti Agung Dwikhy Oka Taradhipa I Gusti Ayu Diah Hendiari I Gusti Bagus Suputra I Kadek Mega Mega Dhyana Putra I Made Hendy Wesha Suryawan I Wayan Arthana I Wayan Arthana I Wayan Restu Indra Nur Cahyati Irania, Khadijah Jovita Larasati Poetri Tajuw Julian Ichsana Argeswara Khadijah Irania Komang Lina Rosita Sugiarni Krisnati Dewi, Ni Putu Ayustin Letia Alda Fadilla M Alfian Pratama Made Ayu Pratiwi Muhammad Alfiansyah Mahmud Ni Kadek Suardiani Ni Luh Ayu Gita Astriani Ni Luh Ayu Gita Astriani Ni Made Ernawati, Ni Made Ni Made Sita Aditya Putri Ni Putu Ayustin Krisnati Dewi Ni Wayan Desy Wahyudiati Nurul Muslihah Nyoman Dati Pertami Pande Gde Sasmita Julyantoro Putu Niken Ayu Saraswati Rachmat Andi Saputra Sebayang, Alfani Shanti Paramita Jayanti Soelistyowati Soelistyowati Sri Andayani Susanto, Raden Dwi Taradhipa, I Gusti Agung Dwikhy Oka W Widodo Wenny Aberti Manurung Widodo S Pranowo Winata, Victor Adi Yessica Christin