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INDONESIA
Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan
Published by Universitas Lampung
ISSN : 2301816X     EISSN : 25797638     DOI : -
Core Subject : Education,
Other
Arjuna Subject : -
Articles 221 Documents
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BUSINESS PROSPECTS FOR CULTIVATION OF OYSTER (Crassostrea gi-gas) IN OKAYAMA, JAPAN Fairuz Romdhony Desnefa Anwar; Ine Maulina
AQUASAINS Vol 11, No 1 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v11i1.p1179 - 1188

Abstract

Japan is known as one of  pioneering countries in oyster cultivation. This study aims to reveal the prospects for the cultivation of pacific oysters. The analysis of investment evaluation criteria in this study is based on financial analysis methods which include Benefit-Cost Ratio (BCR), Break Even Point (BEP), Return of Investment ROI, and Payback Period. The process carried out in the oyster cultivation steps starts from spawning and oyster fry, growth control (Yokusei), hanging (Hansuika) and seeding (Tanetsuke), check growth and landing and marketing. Based on the results of data analysis, it is obtained that the values of BCR, BEP, ROI, and Payback Period respectively are 1.88, 1,155.5 kg, 47%/year, 25.6 months. In this analysis, it is obtained that the BCR value is more than 1, so the business prospects for the oyster cultivation are very feasible to do. The benefit of this study is that the description of prospects and the financial analysis presented can be a consideration and reference for people who have an interest in oyster farming, especially for small-scale businesses.
WATER QUALITY POLLUTION INDEX ANALYSIS IN DOWNSTREAM OF PORONG SUB-WATERSHED, JABON DISTRICT, SIDOARJO REGENCY Hani Kholidah; Moch. Arifin; Bakti Wisnu Widjajani
AQUASAINS Vol 11, No 1 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v11i1.p1189 - 1200

Abstract

Sungai Porong atau disebut Sub-DAS Porong merupakan bagian dari Sungai Brantas yang telah berubah fungsi sebagai tempat pembuangan lumpur panas Porong. Adanya bencana lumpur ini membuat perubahan yang mempengaruhi kondisi air di sungai, sawah, tambak, dan pemukiman. Penelitian ini bertujuan untuk mengetahui kualitas air dan indeks pencemaran kualitas air pada berbagai jenis penggunaan lahan berdasarkan kondisi di sekitar muara sungai, penelitian ini dilakukan di Porong pada berbagai jenis penggunaan lahan berdasarkan kondisi di sekitar muara sungai. Penelitian ini dilakukan di Sub DAS Porong Hilir, Kecamatan Jabon, Kabupaten Sidoarjo, sedangkan Laboratorium Analisis dilakukan di Laboratorium Ilmu Tanah Fakultas Pertanian dan Laboratorium Teknik Lingkungan UPN “Veteran” Jawa Timur. Penelitian ini menggunakan metode indeks pencemaran kualitas air yang tertuang dalam Peraturan Menteri Lingkungan Hidup No. 115 Tahun 2003. Kualitas air pada DAS mengacu pada Peraturan Pemerintah No. 82 Tahun 2001, sedangkan pengambilan sampel air mengacu pada SNI 6989.57:2008. Nilai indeks pencemaran air menunjukkan bahwa penggunaan lahan termasuk dalam kategori tercemar ringan dengan hasil perhitungan sebesar 0,740 (Kolam), 1,007 (sawah), 1,107 (Sungai Induk), dan 1,461 (Pemukiman). Indeks kualitas air di permukiman sangat berpengaruh, hal ini disebabkan oleh degradasi biologis fungsi lahan. Selain itu, di sungai tersebut terdapat pembuangan limbah domestik dan industri setempat. 2008. Nilai indeks pencemaran air menunjukkan bahwa tata guna lahan termasuk dalam kategori tercemar ringan dengan hasil perhitungan sebesar 0,740 (Kolam), 1,007 (sawah), 1,107 (Sungai Induk), dan 1,461 (Pemukiman). Indeks kualitas air di permukiman sangat berpengaruh, hal ini disebabkan oleh degradasi biologis fungsi lahan. Selain itu, di sungai tersebut terdapat pembuangan limbah domestik dan industri setempat. 2008. Nilai indeks pencemaran air menunjukkan bahwa tata guna lahan termasuk dalam kategori tercemar ringan dengan hasil perhitungan sebesar 0,740 (Kolam), 1,007 (sawah), 1,107 (Sungai Induk), dan 1,461 (Pemukiman). Indeks kualitas air di permukiman sangat berpengaruh, hal ini disebabkan oleh degradasi biologis fungsi lahan. Selain itu, di sungai tersebut terdapat pembuangan limbah domestik dan industri setempat. 
OCCURRENCE OF Bregmaceros nectabanus (WHITLEY, 1941) IN THE GULF OF ANTALYA Ferhat Çağıltay; Mehmet Gökoğlu; B. Ahmet Balcı; Alper Yıldız
AQUASAINS Vol 12, No 1 (2023)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i1.p1365-1369

Abstract

With the opening of the Suez Canal in 1869, a connection was established between the Red Sea and the Mediterranean. Because of this connection, many organisms of Red Sea origin migrated to the Mediterranean. These migratory organisms also include fish. For this reason, we monitor and determine the number of fish originating from the Red Sea in the Gulf of Antalya. One of the fishing methods in the Gulf of Antalya is trawler fishing. One of the fish species caught during commercial trawling is horse mackerel. A small and different type of fish was found in the stomach of horse mackerel caught during trawling on October 26, 2021 in the Gulf of Antalya. During the species identification of these fish samples, which were intact in the stomach content of horse mackerel and preserved their integrity, it was determined that these fish were Bregmaceros nectabanus, which is included in the Bregmacerotidae family. With this study, the presence of B. nectabanus identified in the Gulf of Antalya was one more addition to the number of Red Sea origin fish species in the Gulf.
PRELIMINARY STUDY OF FISH DIVERSITY IN PABEAN BAY, INDRAMAYU Eda Putri Santi; Emmanuel Manangkalangi; M F Rahardjo
AQUASAINS Vol 11, No 1 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v11i1.p1149 - 1158

Abstract

Pabean Bay is an estuary waters in which salinity fluctuations occur. This fluctuation requires that the fish living in this location have the ability to adapt. This research is a preliminary study that aims to identify the diversity of fish species in these waters. The study was conducted from January to June 2015 with sampling at intervals of one month. Fishing was carried out at three stations, namely the inside which is the estuary of the river, the middle part and the outside of the estuary to get a representative sample. The fishing gear used are sero, and trammel nets. During the study, it was found that 78 species of fish were included in 39 families. The number of species in each sampling varies. Among the fish found were mainly the family Gobiidae (10 species) and the Family Leiognathidae, Lutjanidae, Sciaenidae and Tetraodontidae (four species each). Several fish species were found in the larval, juvenile and adult stages, and these conditions illustrate the importance of estuaries in the survival of the fish life cycle.
THE EFFECT OF LAMTORO LEAF FLOUR (Leucaena leucocephala) IN FEED ON THE GROWTH OF TILAPIA (Oreochromis niloticus) Fadilatul Mukaromah; Kiki Haetami; Aulia Andhikawati; Roffi Grandiosa
AQUASAINS Vol 12, No 2 (2024): March 2024
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i2.p1441-1450

Abstract

Tilapia is favored for its rapid growth and adaptability to diverse aquatic environments, making it a widely cultivated fish. In fish farming activities, feed provides the largest contribution to the total production cost. So that farmers must use alternative feed to reduce feed costs. One alternative feed for tilapia that is easy to obtain, affordable and sustainably available is lamtoro leaves. The aim of this research was to determine the effect of adding lamtoro leaf flour to feed at different concentrations on the growth of tilapia (O. niloticus). The average weight of tilapia at the beginning of the study was 5,7 grams. This research was conducted for 40 days starting in May until June 2023, taking place in Kertayasa Village, Cijulang District, Pangandaran Regency. The method used in this research was an experimental method using a completely randomized design (CRD) with 4 treatments and 3 replications, namely treatment A: 100% commercial feed (control), treatment B: commercial feed + 5% lamtoro leaf flour, treatment C: commercial feed + 10% lamtoro leaf meal, and treatment D: commercial feed + 15% lamtoro leaf meal. Parameters observed included daily growth rate (SGR), absolute length growth, and water quality. The results indicated a significant effect (P<0.05) on the daily growth rate (SGR) by incorporating lamtoro leaf flour into the feed. The highest treatment, observed in treatment C at 50%/day, resulted in the maximum absolute length growth of 4.63 cm. The water quality parameters during the study were in the proper range for the life of tilapia (O. niloticus).  Providing lamtoro leaf flour in feed does not have a negative effect on growth and water quality. Keywords: Tilapia fish, lamtoro leaf meal, growth.
ANALYSIS OF THE SUSTAINABILITY OF THE UTILIZATION OF THREADFIN BREAM (Nemipterus sp.) LANDED AT LEMPASING FISHING PORT, BANDAR LAMPUNG Putriani, Rizha Bery; Lahay, Almira Fardani; Putri, Septi Malidda Eka; Julian, David
AQUASAINS Vol 12, No 2 (2024): March 2024
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i2.p1506-1519

Abstract

The waters of Lampung Bay have high potential resources for threadfin bream (Nemipterus sp.). This fish has significant economic value as a diverse food ingredient. However, currently, the body size of threadfin bream found tends to be uniform and even smaller due to continuous overfishing. The research was conducted to assess the status of utilization of threadfin bream resources in the waters of Lampung Bay based on five important aspects, namely ecology, economics, social, technological and institutional. The research was carried out in May 2023 at Lempasing Fishing Port, Bandar Lampung City, with data collection through observation and interviews. Data analysis used the multi-dimensional scaling (MDS) method using the Rapfish (rapid appraisal for fisheries) application to evaluate the sustainability of the use of threadfin bream. The results of the analysis show that the sustainability index value for the use of threadfin bream in the waters of Lampung Bay is as follows: ecological dimension 48.59; economic dimension 36.80; social dimension 75.00; technology dimension 49.91; and ethical dimension 61.64. Based on these results, it can be concluded that the use of threadfin bream in the waters of Lampung Bay is quite sustainable, with an average index value of 54.39.Keywords: Ecological dimension, multi-dimensional scaling, Rapfish, sustainability index.
INTERACTION OF STOCKING DENSITY AND DIFFERENT PLANT TYPES IN CULTIVATING SANGKURIANG CATFISH (Clarias gariepinus var. Sangkuriang) AQUAPONIC TECHNOLOGY Dg. Masese, Risa Apriana A.; Ndobe, Samliok; Widiastuti, Irawati Mei
AQUASAINS Vol 12, No 2 (2024): March 2024
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i2.p1451-1461

Abstract

This study investigated the impact of varying stocking densities and plant species interactions within an aquaponic framework. Conducted over a 45-day period (August-October 2023) at the Experimental Farm of Tadulako University, Palu, Central Sulawesi, the research utilized juvenile Sangkuriang catfish (Clarias gariepinus var. Sangkuriang) as the focal organism. Employing a factorial design, with stocking densities 12, 20, and 28 fish per 40 liters of water and three distinct plant species (Ipomoea aquatica, Brassica rapa subsp. chinensis, and Lactuca sativa), the study aimed to elucidate optimal growth conditions. Key findings revealed that the stocking density of 12 fish per 40 liters of water, coupled with pakchoi plants, yielded the most significant growth enhancements. Specifically, this configuration demonstrated a specific growth rate of 6.66±0.7% and absolute weight growth of 14.06±1.0, along with a specific length growth rate of 2.10±0.6% and absolute length growth of 4.48±0.6%. Notably, water quality parameters remained within acceptable limits across all treatments, ensuring an environment conducive to catfish growth. In conclusion, this research underscores the critical role of stocking density and plant selection in optimizing aquaponic systems. The findings offer valuable insights into enhancing both fish and plant growth dynamics within integrated aquaponic frameworks. Keywords: Catfish farming, aquaponics, growth rate, survival rate.
PURIFICATION OF KROSOK SALT (CRUDE SOLAR SALT) THROUGH RECRYSTALLIZATION METHOD WITH ADDITION OF DIFFERENT CONCENTRATIONS OF SLAKED LIME (Ca(OH2)) Perdana Ixbal Spanton; Dewi Anggraeni
AQUASAINS Vol 12, No 2 (2024): March 2024
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i2.p1499-1505

Abstract

Purifying krosok salt (crude solar salt) is an essential step in the food and pharmaceutical industry to ensure product quality. One of the methods used for the purification of krosok salt in this study was recrystallization, involving the addition of slaked lime (Ca(OH)2) at various concentrations. Recrystallization entails dissolving salt crystals in water, followed by filtration to separate impurities from the clean salt solution. This purified salt solution is then heated to produce purer salt crystals. The aim of this study was to analyze the quality content of salt in the yielded pure salt. The significance of this research lies in its contribution of new knowledge regarding simple traditional salt processing methods, which can yield higher-quality salt with significant economic value. In this process, Ca(OH)2 was added at concentrations of 0.1%, 0.08%, and 0.06% to assess its effect on krosok salt purification. The research methodology employed experimental methods. The study's results indicated that the NaCl level test yielded an average value of 96.7% with a C concentration of 0.06%. The highest avera-ge value of 97.686% for the degree of whiteness was observed at a C concentration of 0.1%. Magnesium content averaged 0.07% at a C concentration of 0.06%, while calcium content averaged 0.058% at the same concentration. Keywords: Krosok salt, recrystallization, betel lime, salt quality.
SENSORY CHARACTERISTICS OF SHEREDDED SPICED FISH FORMULATIONS WITH DIFFERENT PROCESSING TREATMENTS Sartika, Dewi; Akhyar, Gusri; Julita, Sela
AQUASAINS Vol 12, No 2 (2024): March 2024
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i2.p1474-1483

Abstract

Tilapia (Oreochromis niloticus) is a type of fish cultivated by local people in Lake Ranau, West Lampung Regency, Lampung Province. Fish is easily damaged by chemical and microbiological processes, so proper handling and processing is needed to extend its shelf life. Shredded spiced fish is an innovative diversification of shredded fish product made from tilapia fish ori-ginating from Lake Ranau with added of multi-spices. Multi-spices are known to have high antioxidant content, so they can improve the quality and develop the taste of shredded spiced fish product.  The multi spices seasoning formulation and process stages greatly influence the characteristics of the shredded produced.  This research aims to study the formulation and processing treatment of the sensory characteristics of the best shredded spices fish. Determining the best formulation and processing treatment was determined using the sensory test method, namely a scoring test involving 30 panelists, then the data was processed using Microsoft Excel 2021. The result showed that the shredded spiced fish product with sample code 212 (without stir-frying) produced the best characteristics with a texture parameter value of 3.85; fragrance 4.05; colors 4.85; and tasted 4 with a total score of 16.75. Keywords: Multi spices, organoleptic, process stages, sheredded fish, tilapia.
THE INITIAL ECHINODERMS COMMUNITY STRUCTURE IN SEAGRASS BED OF MARINE TOURISM AREA: MAHITAM ISLAND AND KETAPANG BEACH, LAMPUNG Moh Muhaemin; Mohammad Fadhil Priambodo; Oktora Susanti; Eko Efendi
AQUASAINS Vol 12, No 1 (2023)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v12i1.p1422-1434

Abstract

Lampung is one of national marine tourism destination. Seagrass is one of fragile coastal ecosystem and it is a habitat and feeding ground for a number of Echinoderms species.  Echinodermata are nutrient recyclers that will in turn provide benefits to the seagrass ecosystem. This research aimed to assess the community structure of Echinoderms and seagrass as well as the relationship between Echinoderms abundance, seagrass densities, and water quality in Mahitam Island and Ketapang Beach. Observations were conducted at 7 stations, namely 3 stations on Ketapang Beach and 4 stations on Mahitam Island. Observations included the type and number of echinoderms, as well as the type, number of individuals, and number of seagrasses stands. Habitat quality that was observed were included water quality such as temperature, salinity, pH, DO (dissolved oxygen), current speed, brightness, and TOM (total organic matter) and also observed substrate type at each station. The result elucidated nine species of echinoderms and 4 species of seagrasses were found in both study sites. The average value of Echinoderms diversity index in Mahitam Island and Ketapang Beach was low. The uniformity index of Echinoderms in Mahitam Island was medium and Ketapang Beach was low. The dominance index of Echinoderms on Mahitam Island was categorized as low and Ketapang Beach was considered high. There was a domination of an Echinoderms species in some stations. The association between Echinoderms abundance, seagrass density and habitat quality in both locations showed a positive relationship and was influenced by the habitat quality parameters of seagrasses.

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