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All Journal Jurnal Kelautan Tropis Omni-Akuatika Jurnal Penelitian Pendidikan IPA (JPPIPA) Martabe : Jurnal Pengabdian Kepada Masyarakat Journal of Aquaculture and Fish Health Juvenil: Jurnal Ilmiah Kelautan dan Perikanan
Sinaga, Sorbakti
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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Sintasan, Kondisi Pertumbuhan, Pertumbuhan Penciri dan Faktor yang Mempengaruhi Pertumbuhan Kepiting Portunus pelagicus (Decapoda: Portunidae) di Ekosistem Mangrove Desa Kuala Langsa Putriningtias, Andika; Sinaga, Sorbakti; Faisal, Teuku Muhammad; Nugrahawati, Anis; Hatta, Muhammad; Syahrial, Syahrial; Manullang, Irma Warny Lamberta; Sihite, Fitri Suxes; Jamil, Muhammad
Jurnal Kelautan Tropis Vol 27, No 1 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i1.19136

Abstract

The study was conducted in May - June 2018 in the water bodies of the mangrove ecosystem of Kuala Langsa Village with the aim of knowing survival, growth conditions, growth characteristics and environmental factors that affect the growth of Portunus pelagicus crabs while in the mangrove ecosystem. The method used was a one-factor completely randomized design with 4 treatment levels, where environmental parameters were collected in situ and ex situ with statistical analysis using ANOVA, orthogonal polynomials and PCA. The results of the study showed that the pH of the water ranged from 7.40 - 7.57, salinity 26.17 - 28.87‰, DO 4.92 - 5.88 mg/L, temperature 29.89 - 30.71°C, TDS 338.54 - 358.64 mg/L, pH H2O 4.43 - 4.51, pH KCL 2.96 - 3.59, C-organic 3.03 - 6.52%, N-total 0.19 - 0.26%, C/N 16.09 - 26.10 and P-available 19.12 - 21.52 ppm. In addition, survival ranged from 41.60 - 88.80%, absolute growth of carapace 13.80 - 30.80 cm, relative carapace 0.56 - 1.02 cm, absolute weight 16.10 - 18.50 gr, daily length 0.46 - 0.65 cm, daily width 0.36 - 0.59 cm and daily weight 0.72 - 0.93 gr. PCA analysis showed that the growth characteristics of P. pelagicus crabs in the mangrove ecosystem waters of Kuala Langsa Village were absolute length growth and daily length growth, while environmental factors that influenced their growth were C/N sediment parameters, C-organic sediments and water temperature.  Kajian dilakukan pada bulan Mei – Juni 2018 di badan perairan ekosistem mangrove Desa Kuala Langsa dengan tujuan untuk mengetahui sintasan, kondisi pertumbuhan, pertumbuhan penciri dan faktor lingkungan yang mempengaruhi pertumbuhan kepiting Portunus pelagicus saat berada di ekosistem mangrove. Metode yang digunakan adalah rancangan acak lengkap satu faktor dengan 4 taraf perlakuan, dimana parameter lingkungan dikumpulkan secara in situ dan ex situ dengan analisis statistik yang digunakan adalah ANOVA, polinomial ortogonal dan PCA. Hasil kajian memperlihatkan bahwa pH air berkisar antara 7.40 - 7.57, salinitas 26.17 - 28.87‰, DO 4.92 - 5.88 mg/L, suhu 29.89 - 30.71°C, TDS 338.54 - 358.64 mg/L, pH H2O 4.43 - 4.51, pH KCL 2.96 - 3.59, C-organik 3.03 - 6.52%, N-total 0.19 - 0.26%, C/N 16.09 - 26.10 dan P-tersedia 19.12 - 21.52 ppm. Selain itu, untuk sintasan berkisar antara 41.60 - 88.80%, pertumbuhan mutlak karapas 13.80 - 30.80 cm, nisbi karapas 0.56 - 1.02 cm, berat mutlak 16.10 - 18.50 gr, panjang harian 0.46 - 0.65 cm, lebar harian 0.36 - 0.59 cm dan berat harian 0.72 - 0.93 gr. Untuk analisis PCA menunjukkan bahwa penciri pertumbuhan kepiting P. pelagicus di perairan ekosistem mangrove Desa Kuala Langsa adalah pertumbuhan panjang mutlak dan pertumbuhan panjang harian, sedangkan faktor lingkungan yang mempengaruhi pertumbuhannya adalah parameter C/N sedimen, C-organik sedimen dan suhu air.
The Impact of Artificial Barriers on the Varuna litterata Migration Route in the Lower Serayu River, Central Java and Its Molecular Identification Sinaga, Sorbakti; Maimunah, Yunita; Ekawati, Arning Wilujeng; Widodo, Maheno Sri
Journal Omni-Akuatika Vol 20, No 1 (2024): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2024.20.1.1140

Abstract

The Serayu River is one of the longest rivers in Central Java. Dams built in the lower reaches of the Serayu River are thought to block the migration paths of fish and aquatic macrocrustaceans. This study aimed to determine the effect of dam on Varuna litterata migration and its molecular identification. This research was conducted using the observation method. Migration observations were made on vertical paths while molecular identification of V. litterata in the lower reaches of the Serayu River was compared with existing data in GenBank. The study covered the freshwater area above the Serayu Dam, the open area with freshwater below the Serayu Dam, and the open area with brackish water at the estuary of the Serayu River, with a study length of 33.37 km. The results showed that the presence of dams in the lower reaches of the Serayu River inhibited the migration pattern of V. litterata. The vertical shape of the dam causes only a few V. litterata to migrate to the top of the dam. The dam in the lower reaches of the Serayu River resulted in not many V. litterata being able to migrate to the top of the dam, so there were very few V. litterata found in the population upstream of the dam (115 ind). The results of molecular identification of V. litratata using the cytochrome C oxidase subunit I (COI) gene show that this crab is 100% the same as the data in GenBank and is closely related to Varuna yui and other Varunidae crab species.Keywords: Dams, Molecular, Migration, Serayu River, Varuna litterata
Efektivitas Pakan Alami dalam Meningkatkan Warna dan Tingkat Kelangsungan Hidup Udang Hias, Neocaridina sp. Kusuma, Baruna; Anjaini, Jefri; Devananda, Andiawan Hakim; Sinaga, Sorbakti; Soedibya, Petrus Hary Tjahya
Juvenil Vol 6, No 3: Agustus (2025)
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.v6i3.31252

Abstract

ABSTRAKUdang hias Neocaridina sp. semakin diminati dalam industri akuakultur hias karena warna tubuhnya yang menarik dan kemudahan dalam pemeliharaan. Warna tubuh udang dan tingkat kelangsungan hidupnya dipengaruhi oleh nutrisi yang tersedia dalam pakan. Penelitian ini bertujuan untuk mengetahui pengaruh jenis pakan alami yang berbeda  (Tubifex sp., Larva Chironomus sp., Daphnia sp. dan pellet spirulina (kontrol) terhadap tingkat kelangsungan hidup, panjang, berat dan warna pada Neocaridina sp. Penelitian dilakukan menggunakan Rancangan Acak Lengkap (RAL) dengan empat perlakuan dan tiga ulangan. Udang dipelihara selama 40 hari dalam akuarium dengan kepadatan 1 ekor/liter, dan pakan diberikan secara adlibitum. Hasil penelitian menunjukkan bahwa jenis pakan alami yang berbeda memberikan pengaruh nyata terhadap kelangsungan hidup dan intensitas warna Neocaridina sp. (P0,05), tetapi tidak berpengaruh signifikan terhadap pertumbuhan panjang dan berat (P0,05). Kelangsungan hidup tertinggi diperoleh pada perlakuan Tubifex sp. (85,00 ± 7,07%), sedangkan warna tubuh terbaik dicapai pada perlakuan yang sama (3,50 ± 0,12). Tubifex sp. merupakan pakan alami yang paling efektif dalam meningkatkan kelangsungan hidup dan pigmentasi warna Neocaridina sp. Pentingnya penelitian lanjutan kombinasi pakan alami dan buatannterhadap efisiensi pertumbuhan dan pigmentasi pada Neocaridina sp.Kata Kunci: Karotenoid, Neocaridina sp., pakan alami, pigmentasi warna.ABSTRACTNeocaridina sp. ornamental shrimp are increasingly in demand in the ornamental aquaculture industry due to their attractive body color and ease of maintenance. Shrimp body color and survival rate are influenced by nutrients available in feed. This study aims to determine the effect of different types of natural feed (Tubifex sp., Chironomus sp. larvae, Daphnia sp., and spirulina pellets (control)) on survival rate, length, weight, and color in Neocaridina sp. The study was conducted using a completely randomized design (CRD) with four treatments and three replicates. Shrimp were reared for 40 days in an aquarium with a density of 1 ind/L, and feed was given adlibitum. The results showed that different types of natural food had a significant effect on the survival and color intensity of Neocaridina sp. (P0.05). However, they had no significant effect on the growth of length and weight (P0.05). The highest survival rate was obtained in the Tubifex sp. treatment (85.00 ± 7.07%), while the best body color was achieved in the same treatment (3.50 ± 0.12). Tubifex sp. is the most effective natural food in increasing the survival and color pigmentation of Neocaridina sp. The importance of further research on the combination of natural and artificial feed on the efficiency of growth and pigmentation in Neocaridina sp.Keywords: Carotenoids, color pigmentation, Neocaridina sp., natural food.
New Records of the Egg Development Phase of Varuna litterata in the Lower Serayu River, Central Java sinaga, sorbakti; Widodo , Maheno Sri; Maimunah, Yunita
Journal of Aquaculture and Fish Health Vol. 13 No. 3 (2024): JAFH Vol. 13 No. 3 September 2024
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v13i3.54757

Abstract

One of the Brachyura crabs found in the lower reaches of the Serayu River is Varuna litterata, also known as the "herring bow crab". This crab usually inhabits shallow tidal areas and hides under rocks, logs, or dead leaves. It is a highly adapted crab found in a wide range of salinities. V. litterata is also a fishery product consumed in Thailand, the Philippines, and Indonesia. This research was conducted in the Lower Serayu River, Central Java, which consists of three observation stations, namely: 1) the first station is located above the dam with fresh water, 2) the second station is below the dam with fresh water properties and 3) the third station is downstream (estuary) of the Serayu River with brackish water. This research was conducted for four months, from October 2023 to January 2024. This study aimed to determine the level of egg development in V. litterata. The results showed that V. litterata experienced four stages in egg development and then hatched into zoea. At the initial development stage, V. litterata eggs will be purple; in the second stage, the eggs will turn reddish; in the third development stage, the eggs will turn orange to brownish; and in the fourth stage, the eggs will develop and become black. V. litterata that will spawn will migrate to brackish waters to hatch their eggs. V. litterata produces 20,708 - 85,886 eggs with an average egg diameter of 0.440 - 0.466 mm.
MAGANG MAHASISWA DI DINAS PEMBERDAYAAN MASYARAKAT DESA PROVINSI ACEH PADA PROGRAM MATCHING FUND Chairuddin, Chairuddin; Fuad, Muhammad; Fairus, Fairus; Sinaga, Sorbakti; Mastuti, Rini
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 12 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i12.4224-4233

Abstract

Program magang yang dilakukan bagi mahasiswa merupakan sebuah kesempatan untuk mengikuti periode kerja sementara. Melalui kegiatan magang mahasiswa dapat memperoleh pengalaman kerja awal yang berharga, yang dapat membantu memahami tantangan, tren, dan peluang di dunia kerja. Matching Fund menyediakan peluang magang bagi mahasiswa di Dinas Pemberdayaan Masyarakat Desa (DPMD) Provinsi Aceh sebagai bagian dari upaya untuk meningkatkan soft skill mahasiswa dalam mengatasi permasalahan di desa atau masyarakat. Kegiatan magang diikuti oleh 5 orang mahasiswa yang berasal dari program studi yang berbeda. Metode yang digunakan dalam kegiatan magang adalah pendekatan partisipatif dimana mahasiswa terlibat secara menyeluruh pada hampir semua kegiatan DPMD pada sektor yang disesuaikan dengan latar belakang keilmuan masing-masing mahasiswa. Dosen berperan sebagai pembimbing yang memberikan arahan dan bimbingan kepada mahasiswa selama proses magang. Hasil menunjukkan bahwa, kegiatan magang dapat meningkatkan soft skill mahasiswa rata-rata mencapai 90% terkait pengelolaan desa. Melalui kegiatan ini, diketahui bahwa pentingnya
Analysis of Substrate, Gastric Content and Nutrient Content of Varuna litterata Sinaga, Sorbakti; Widodo , Maheno Sri; Maimunah, Yunita
Jurnal Penelitian Pendidikan IPA Vol 10 No 11 (2024): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i11.7691

Abstract

Varuna litterata is a secondary freshwater crab found in tidal areas. This crab is caught, its eggs are taken, and it is considered a delicacy. Continuous fishing without any cultivation efforts can cause a decline in the population, leading to extinction. This study aims to determine the characteristics of the habitat substrate, stomach, and nutritional content of V. litterata. The method used in this study is descriptive exploratory. The study was conducted in the Serayu River for four months (October 2023 - January 2024). The observation location was carried out at three stations. The study showed that V. litterata prefers waters with clay sand substrates (75% sand, 25% dust, and 0% clay). This habitat is very suitable for cultivation development, as shown by the population of captured crabs. The results of observations of stomach contents show that this crab is an opportunistic omnivore. This crab has a high nutritional content with an average water content (60.72%), ash (4.57%), fat (0.52%), protein (25.66%), and carbohydrates (8.52%). Further research is essential to understand the reproductive system of V. litterata, its life cycle, and suitable habitats for spawning.
Co-Authors Anis Nugrahawati Arning Wilujeng Ekawati Chairuddin Chairuddin Devananda, Andiawan Hakim Fairus, Fairus Kusuma, Baruna Maheno Sri Widodo, Maheno Sri Manullang, Irma Warny Lamberta Muhammad Fuad Muhammad Hatta Muhammad JAMIL Putriningtias, Andika Rini Mastuti Sihite, Fitri Suxes Soedibya, Petrus Hary Tjahya SYAHRIAL SYAHRIAL Teuku Muhammad Faisal, Teuku Muhammad Widodo , Maheno Sri Yunita Maimunah