Jurnal Aquatik

EFFECT OF DIFFERENT TYPES OF FEED ON THE GROWTH OF MUD CRABS (Scylla serrata)

Marini Cladita Klau, Yulianus Linggi, Asriati Djonu — Mon, 31 Mar 2025 00:00:00 +0000

The research was conducted in Tarus Village (Manikin Beach), Kupang Tengah District, Kupang Regency. The location of this research was determined by considering that the waters in Kupang Regency, especially Tarus Village (Manikin Beach). The treatments tested were the provision of different types of feed, Treatment A: Feeding snails, Treatment B: Feeding mangrove shells, Treatment C: Feeding trash fish (tembang fish), Treatment D: Feeding chicken stomachs. The parameters measured in this study were absolute weight, daily weight and survival. Based on the research and research results the provision of different feeds significantly affected growth, both weight, but did not affect survival and the best feed for growth was shown in treatment A with the use of snail feed which resulted in absolute weight growth of 29.00 g, daily growth of 0.48 g% / h. While for survival reached 100% all treatments.

PERBANDINGAN TUBIFEX SP DAN CHIRONOMUS SP DALAM PAKAN TERHADAP PENINGKATAN WARNA IKAN KOMET (Carassius auratus) COMPARISON OF TUBIFEX SP AND CHIRONOMUS SP ON INCREASING THE COLOR OF COMET FISH (Carassius auratus)

Victoria Natalis, Ade Yulita Hesti Lukas, Asriati Djonu — Mon, 31 Mar 2025 00:00:00 +0000

A 30-day nutritional experiment was conducted at the Aquaculture Research Laboratory, Faculty of Fisheries and Marine Sciences. The study employed a Completely Randomized Design (CRD) with three experimental diets: (A) exclusive Tubifex sp. meal, (B) equal combination of Tubifex sp. and Chironomus sp. meals (1:1 ratio), and (C) exclusive Chironomus sp. meal, each replicated three times. Key performance indicators including skin pigmentation intensity, body weight gain, and linear growth were measured in goldfish (Carassius auratus). Statistical analysis revealed significant dietary effects (p<0.05) on all measured parameters. The blended diet (Treatment B) demonstrated superior efficacy, producing both the most vibrant coloration and maximal growth metrics among test groups. These findings suggest that balanced inclusion of both worm meals synergistically enhances ornamental quality and growth performance in this commercially valuable fish species.

Keywords: Chironomus sp, C. auratus, Tubifex sp.

PERBANDINGAN PERTUMBUHAN KERANG DARAH (Anadara granosa) DI PERAIRAN MOTADIKIN DAN KLETEK KABUPATEN MALAKA

Maria Frumensia Helmayati Anar, Priyo Santoso, Yudiana Jasmanindar — Sat, 01 Mar 2025 00:00:00 +0000

The research was carried out for 3 months starting from April to July 2024, at two different locations, namely Motadikin waters and Kletek waters, Central Malaka District, Malacca Regency. The parameters observed in this study were growth in absolute weight, absolute length, survival and water quality. Comparison of the growth and survival of blood cockles can be seen that the highest growth in absolute weight and absolute length is found in Kletek waters and the lowest in Motadikin waters.

PEMBERIAN BEKICOT (Achatina fulica) TERHADAP PERTUMBUHAN IKAN KAKAP PUTIH (Lates calcarifer)

Marlen Brilian Riwu Nadju, Marcelien Dj Ratoe Oedjoe, Franchy Ch Liufeto — Sat, 01 Mar 2025 00:00:00 +0000

This research was carried out at BBIP Tablolong, Kupang Regency for 60 days. The aim of this research was to determine the effect of feeding snails (Achatina fulica) on the growth of white snapper (Lates calcarifer). The design used was RAL with 4 treatments and 3 repetitions, namely (A) f999 pellets 5% of the biomass weight (control), (B) snails 5% of the biomass weight, (C) snails 10% of the biomass weight, (D) snails 15% of the biomass weight. The parameters measured in this study are Absolute Weight Growth, SGR, SR, FCR, Feed Efficiency. The research results prove that treatment (B) Snails 5% of biomass weight is the best dose for the growth of white snapper with an absolute weight growth rate of 8.3 g, SGR reaching 0.048%g/day, SR of white snapper 90%, FCR 1.36 g, and feed efficiency value reaching 73.44%.

Keywords: Snail, sea bass, growth

STUDI NILAI TAMBAH RUMPUT LAUT (Kappaphycus sp) MENJADI ALKALI TREATED COTTONII (ATC)

Ferdinan Ferdinan, Sunadji Sunadji, Marcelien Dj Ratoe Oedjoe — Mon, 03 Mar 2025 00:00:00 +0000

This study aims to analyze the added value resulting from processing Kappaphycus sp seaweed into Alkaline Treated Cottonii (ATC) and to evaluate the economic aspects of the process. The ATC processing process is carried out through boiling seaweed with a solution of potassium hydroxide (KOH) at a temperature of 80–85°C for two hours, followed by washing, cutting, and drying. The results of the study showed that the processing of dried seaweed into ATC produced an added value of Rp 67,000 per kilogram of dried seaweed, with a total added value for 100 kg of seaweed reaching Rp 7,210,000. This added value reflects a significant increase in the selling price of processed products compared to the sale of seaweed in raw form. Financial analysis showed a gross profit of IDR 5,900,000, with a break-even point reached in the production of around 28.45 kg of ATC. This study concludes that processing seaweed into ATC not only increases the economic value of the product, but also opens up opportunities for product diversification such as pure carrageenan which is in great demand in the international market. Therefore, processing seaweed into ATC can provide great economic benefits for coastal communities and can improve the welfare of business actors through the added value produced.

Keywords: Alkali Treated Cottonii (ATC), economics, Kappaphycus sp, carrageenan, added value, processing

PENGARUH KEPADATAN BERBEDA TERHADAP PERTUMBUHAN DAN KELANGSUNGAN HIDUP BENIH IKAN PATIN YANG DI PELIHARA DALAM WADAH HAPPA DI BBIS NOEKELE KABUPATEN KUPANG

Umar Widia, Sunadji Sunadji, Yulianus Linggi — Mon, 03 Mar 2025 00:00:00 +0000

This study aims to determine the effect of different stocking densities on the growth and survival of striped catfish (Pangasius sp.) fry reared in hapa net enclosures at the Central Fish Hatchery (BBIS) Noekele, Kupang Regency. The study employed a Completely Randomized Design (CRD) with three different stocking densities: 90, 120, and 150 fish per hapa, each replicated three times. The observed parameters included survival rate, absolute weight gain, absolute length gain, and water quality (temperature, pH, dissolved oxygen, and ammonia). Data were analyzed using ANOVA to assess the significance of differences among treatments, followed by the Least Significant Difference (LSD) test if significant differences were found. The results showed that different stocking densities had a significant effect on the survival and growth of catfish fry. ANOVA results indicated that stocking density had a significant effect (p < 0.05) on survival rate, but not on absolute weight gain or absolute length gain. The density of 90 fish per hapa yielded the best results, with higher survival rates, weight gain, and length gain compared to the densities of 120 and 150 fish per hapa. This condition suggests that at lower densities, competition for oxygen, space, and feed is reduced, thereby supporting more optimal growth. Therefore, a stocking density of 90 fish per hapa is recommended as an effective cultivation strategy to enhance the performance of catfish fry in the region.

Keywords: Cultivation of hapa, catfish, density, growth, survival rate

GAMBARAN KONDISI KUALITAS AIR UNTUK RENCANA PENGEMBANGAN BUDIDAYA TAMBAK UDANG VANAME (Litopenaeus vannamei) DI PESISIR DESA TOENEKE KABUPATEN TIMOR TENGAH SELATAN

Vinsensia Mariana Susanti, Franchy Ch Liufeto — Mon, 03 Mar 2025 00:00:00 +0000

Vaname shrimp farming (Litopenaeus vannamei) became one of the alternative fisheries production that is growing rapidly in this region, because promising prospects and profits. The purpose of this study was to determine description of water quality conditions required for the development of vaname shrimp (Litopenaeus vannamei) aquaculture in coastal Toineke Village, South Central Timor District. This study was conducted in coastal waters South Central Timor District (TTS), Kualin District, in Toineke Village for two weeks. Based on the results of water quality research it can be concluded that location A has a pH value of 4.9, dissolved oxygen of 0.6 ppm, nitrate of 0.005 mg/l and location B pH value of 5.34, dissolved oxygen of 0.59 ppm, nitrate of 0.009 mg/l, water quality that has been measured at location A and location B indicates that both locations do not qualify as vaname shrimp farming sites. Based on the research results obtained there are several water quality parameters that do not meet the optimal threshold. Researchers suggest water quality management.

Keywords: Vaname shrimp farming (Litopenaeus vannamei).

Pertumbuhan Ikan Nila Merah (Oreochromis niloticus) Yang Diberi Pellet Dengan Penambahan Tepung Daphnia sp

Yunanda Dau Bere, Yulianus Linggi, Wesly Pasaribu — Mon, 03 Mar 2025 00:00:00 +0000

Penelitian ini bertujuan untuk menganalisis pengaruh penambahan tepung Daphnia sp. terhadap pertumbuhan ikan nila (Oreochromis niloticus). Penelitian dilaksanakan pada bulan Juni hingga Agustus 2024 di Laboratorium Fakultas Kelautan dan Perikanan, Universitas Nusa Cendana, Kupang. Metode penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan lima perlakuan dan tiga ulangan. Perlakuan meliputi A (kontrol), B (10% Daphnia sp.), C (15% Daphnia sp.), D (20% Daphnia sp.), dan E (30% Daphnia sp.), masing-masing perlakuan terdiri atas 15 ekor ikan, sehingga total ikan sebanyak 225 ekor. Parameter yang diamati mencakup pertumbuhan berat mutlak dan rasio konversi pakan (FCR). Hasil penelitian menunjukkan bahwa penambahan tepung Daphnia sp. berpengaruh signifikan (p<0,05) terhadap pertumbuhan berat mutlak, namun tidak berpengaruh nyata terhadap rasio konversi pakan.

Kata kunci: Ikan nila, Pertumbuhan, Tepung daphnia, Rasio Konversi Pakan (FCR

JENIS DAN KEPADATAN FITOPLANKTON PADA KEDALAMAN BERBEDA DI LOKASI BUDIDAYA KERANG MUTIARA DI BALAI PERIKANAN BUDIDAYA LAUT LOMBOK

Nurnamsi Masrik Sombak, Yulianus Linggi, Priyo Santoso — Mon, 03 Mar 2025 00:00:00 +0000

This study aims to identify the types and densities of phytoplankton at different depths in the pearl oyster (Pinctada maxima) aquaculture area at the Marine Aquaculture Center, Lombok. The research was conducted from August to October 2024. Water samples were collected from three stations at three depth points: surface, near the pocket, and bottom. A total of 38 genera from 10 phytoplankton classes were identified, with Bacillariophyceae being the most dominant. The highest density was found at the bottom of Station 2 (3400 ind/L), indicating nutrient accumulation. Depth significantly affected phytoplankton distribution more than spatial location. These results provide ecological information supporting sustainable aquaculture.

Keywords: Bacillariophyceae, phytoplankton, depth, density, pearl oysters.

PERBANDINGAN PERTUMBUHAN RUMPUT LAUT (Kappaphycus alvarezii) YANG DIPELIHARA PADA KEDALAMAN BERBEDA DI PERAIRAN TELUK ROTE

Kenny Peter Ndun, Yulianus Linggi, Ridwan Tobuku — Mon, 03 Mar 2025 00:00:00 +0000

This study was carried out to analyze the growth differences of K. alvarezii at different depths, to identify the environmental factors that affect the growth of K. alvarezii at these depths, and to determine the best depth that provides optimal growth results for K. alvarezii at the research site. This research was carried out for 45 days which took place in the waters of Rote Bay, Lenaoen Beach. The method used in this study is an experimental method and the experimental design used is Complete Random Design (RAL) with 3 treatments and 3 replicates, P1 = Seaweed cultivation on the surface with a depth of 20 cm, P2 = Seaweed cultivation on the surface with a depth of 60 cm, and P3 = Seaweed cultivation on the surface with a depth of 100 cm. In this study, the test material used was Kappaphycus alvarezii seaweed with an initial weight of 100 grams and using the longline cultivation method. The parameters tested in this study are growth parameters and environmental parameters. The results showed that the depth of cultivation had a significant influence on the absolute growth of K. alvarezii in the waters of Rote Bay where the highest absolute growth was achieved at a depth of 20 cm with a value of 828 g, followed by a depth of 60 cm of 667 g, and a depth of 100 cm of 545 g. Environmental conditions at a depth of 20 cm, including the optimal temperature (29.5°C), Salinity (32.1 ppt), high light intensity (about 28,000 lux), and supportive current velocity (20.5 cm/s), strongly support photosynthesis and metabolism processes, thereby accelerating biomass accumulation. In contrast, at deeper depths, decreased light intensity, lower temperatures, and slower currents inhibit growth rates. Therefore, the selection of the right cultivation depth is crucial to maximize the productivity of K. alvarezii and support the sustainability of cultivation businesses in Rote Bay.

Keywords: Kappaphycus alvarezii, seaweed, Rote bay