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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 8 Documents
 1 
Search results for , issue "Vol 10, No 2 (2022)" : 8 Documents clear
GROWTH AND SURVIVAL OF TILAPIA (Oreochromis niloticus) WITH STARVED PERIODICALLY IN BEDENG MUNIR VILLAGE, SOUTH PAGAR ALAM Verma Agustina; Retno Cahya Mukti
AQUASAINS Vol 10, No 2 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v10i2.p1125-1130

Abstract

Abstract This time fish farmers often face constraints on the high price of commercial feed which results in low profits for the farmers. One solution to reduce artificial feed is periodic starvation. Starvation can reduce and increase feed efficiency while increasing production and fish can grow equally without fasting. The purpose of this study was to determine the growth and survival of periodically fasted tilapia (Oreochromis niloticus) in Bedeng Munir Village, South Pagar Alam. The method used in fish farming consisted of two treatments, that is P0: control and P1: fasting treatment (fish were given commercial feed for 4 days and fasted for 1 day). The parameters observed were absolute length growth, absolute weight growth, total feed consumption, feed efficiency, survival, and water quality. The results showed that the P1 treatment produced the highest absolute weight growth of 16.5 g, the highest absolute length growth was 1.35 cm, the lowest amount of feed consumption was 1540 g, the highest feed efficiency was 204.94%, the survival rate was 89. %,. While water quality in both the treatment is still in the range of tolerance for tilapia as temperature 21.4 to 24.2 0C and pH 7.6 to 8.1.KeywordsGrowth, tilapia, starvation, survival.
ANALYSIS OF RIVER WATER POLLUTION DUE TO DISPOSAL OF NATURAL STONE INDUSTRIAL WASTE IN CIREBON REGENCY Sri Wahyuningsih; Feti Fatimatuzzahroh; Iyat Hamiyati
AQUASAINS Vol 10, No 2 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v10i2.p1061-1076

Abstract

The development of the industrial sector has caused many changes in environmental quality, including the natural stone industry in Cirebon Regency. Water pollution that occurs is mostly caused by the disposal of waste to the river. Wastewater containing sludge causes changes in water quality including turbidity, high total and suspended solids, and sedimentation. The purpose of this study was to examine the condition of water quality and the status of river pollution due to the disposal of natural stone industrial waste using the STORET method and the pollution index. As a result, the concentration of TSS reached 1,042.33 mg/L and has exceeded the class III quality standard based on Government Regulation Number 22 of 2021. Pollution status based on the STORET method shows stations 1 and 2 are in the moderately polluted category, while station 3 is included in the category of lightly polluted. Meanwhile, based on the pollution index method, each station is included in the lightly polluted category. The results of both the STORET and the pollution index showed that station 2 had the highest score. Thus, efforts to treat waste from natural stone industrial activities are needed to reduce the rate of increase in river pollution.
EFFECTIVENESS OF FERMENTED Ul-va lactuca ON FEED ON GROWTH RATE OF CARP (Cyprinus carpio) Nurbety Tarigan; Yatris Rambu Tega
AQUASAINS Vol 10, No 2 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v10i2.p1131-1140

Abstract

This research was conducted to determine the effectiveness of fermented Ulva lactuca in feed on the growth rate of tilapia and to determine the best dose of the effectiveness of fermented Ulva lactuca on the growth rate of tilapia. This study used a completely randomized design with four treatments and three replications of 0%, 10%, 20% and 30% on feed. The carp used with fish length ranging from 7-9 cm and an average body weight of 3-4 g were reared for 42 days. The results showed that the addition of fermented ulva lactuca had a significant effect on the specific growth rate of tilapia, survival rate, protein efficiency ratio (PER), protein utilization efficiency (EPP). The addition of 30 % fermented Ulva lactuca in the feed was the best dose for the growth rate of tilapia. The specific growth rate was 19.42%, the efficiency of protein utilization was 68.76%, and the protein efficiency ratio was 19.41% while the survival rate was 55.56%. The addition of Ulva lactuca in feed can increase the growth rate of tilapia.
DENSITY AND DISTRIBUTION PATTERN OF BIVALVES IN WATERS OF MALANG RAPAT VILLAGE, GUNUNG KIJANG DISTRICT, BINTAN REGENCY Soehendrawan, Sherry Febrarismono; Lestari, Febrianti; Kurniawan, Dedy
AQUASAINS Vol 10, No 2 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v10i2.p1049-1060

Abstract

The purpose of this study was to determine the density, diversity, uniformity, dominance and distribution pattern of bivalves in the waters of Malang Rapat Village. This research uses purposive sampling method. Determination of the sampling point based on the consideration of activities in the waters of Malang Rapat Village. Sampling using a quadrant transect method measuring 1x1 meter.  The results showed that the highest species density was Gafrarium pectinatum with a value of 63,333 ind/ha, and the lowest species was Pinctada radiata with a value of 1,111 ind/ha. The species diversity index obtained values in the range of 0.54-0.76 and the category of each station is low. The uniformity index is obtained with a value in the range of 0.56-0.76 and categories at stations I and III are medium, stations II and IV are high. The dominance index obtained values in the range of 0.22-0.42 and the category at each station are low, the dominant species was G. pectinatum with a value of 0.38. The distribution pattern of bivalves in the sea of Malang Rapat Village at stations I and 3 obtained values of 2.43 and 3.05 with clustered categories, while at stations II and IV obtained values of 0.07 and 0.48 with the same or uniform categories.
DIGITAL MARKETING OF FISHERY PRODUCTS, MARKETING STRATEGY DURING THE COVID-19 PANDEMIC Nurhuda Annaastasia; Desi Sriwulan; Wa Jali; Abdul Sarifin
AQUASAINS Vol 10, No 2 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v10i2.p1141-1148

Abstract

The development of technology affects people's lifestyles, especially in meeting their daily needs. This is what underlies business actors starting to look at digital marketing marketing. This study aims to determine the marketing strategy of processed fishery products using digital marketing during the Covid-19 pandemic. This research was conducted from June to September 2021 in Kendari City. The results of the study show that there is a relationship between the application of digital marketing with sales volume and marketing strategies by utilizing more than one digital by providing an attractive appearance for consumers.
UTILIZATION OF FERMENTED SPINACH LEAVES (Amiranthus spinosus L.) IN FEED FORMULATION TO STIMULATE MOLTING OF MANGROVE CRAB (Scylla serrata) Marniati Marniati; Salnida Yuniarti Lumbessy; Fariq Azhar
AQUASAINS Vol 10, No 2 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v10i2.p1101-1114

Abstract

There are several techniques that have been developed to accelerate the molting of mud crabs, namely ablation, mutilation and supplementation. One form of supplementation is through the use of fermented spinach leaves on mud crabs. This study aimed to analyze the use of fermented spinach (A. spinosus L) leaves in feed to stimulate the molting of mud crab (S. serrata). This research was conducted for 60 days. The experimental method used in a Completely Randomized Design (CRD) consisting of five treatments and three replications, namely trash fish (P1), Spinach Leaf Fermentation (FDB) 20% (P2), 25% (P3), 30% (P4), and 40% (P5). The results showed that the combination test feed of spinach leaf fermentation had a significant effect on absolute weight and length, specific growth rate (SGR), and feed utilization efficiency, but had no significant effect on feed conversion and survival. Treatment of feed with additional fermented of spinach leaf 30% gave a faster initial molting, which is in the first 10 days with a total of 6 molting crabs and a molting percentage of 40%. Feeding with the addition of 30% and 40% spinach leaf fermented concentrations can provide the best growth and feed efficiency for mangrove crabs.
DISTRIBUTION ANALYSIS AND MARKETING MARGINS OF FRESH FISH CATCHES IN TPI SENDANGBIRU, MALANG REGENCY, EAST JAVA Elly Fiddyawati; Asri Sawiji; Fajar Setiawan
AQUASAINS Vol 10, No 2 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v10i2.p1077-1100

Abstract

Based on data from the Department of Maritime Affairs and Fisheries of Malang Regency, Sumbermanjing sub-district is the largest capture fishery producing sub-district in Malang Regency. The purpose of this study is to find out how efficient the marketing channels are at TPI Sendangbiru. This research was conducted descriptively using a survey method in the field. Data collection was obtained through sampling (primary data) and statistical data collection owned by TPI Sendangbiru. There are 5 marketing channel patterns in TPI Sendangbiru. Each type of fish has a different marketing flow. The value of marketing efficiency for each type of fish in each marketing channel has various values. The efficiency value in marketing tuna and albakor has the same marketing channel and value, namely 2%, for marlin fish 3%. The baby tuna fish have 5 marketing channel pat­terns of 4%, 5%, 3%, 4%, and 5%. On tuna, lemuru, and kite also have 5 patterns of marketing channels. The value of marketing efficiency of tuna is 6%, 6%, 4%, 5%, and 6%, the value of marketing efficiency of lemuru is 7%, 8%, 5%, 6%, and 8%. The value of the marketing efficiency of scad fish is 6%, 7%, 4%, 6%, and 7%.
DIFFERENCES IN THE VULNERABILITY OF MEDAKA FISH (Oryzias celebensisis) MALE AND FEMALE TO CLORPYRIPHOS INSETICIDE Sulfitratullah Sulfitratullah; Khusnul Yaqin; Nita Rukminasari
AQUASAINS Vol 10, No 2 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v10i2.p1115-1124

Abstract

Chlorpyrifos is one of the most widely used organophosphate insecticides used to control pests on plants. The use of insecticides will produce residues in the soil and on plants and can be carried by rain flows to water bodies. This can pollute aquatic ecosystems and could negatively affected the growth of aquatic biota like Oryzias celebensis. This study aimed to determine the susceptibility of male and female medaka celebes (Oryzias celebensis) to chlorpyrifos insecticide. In this study, five fish medaka celebes were put in each jar in one jar for male medaka fish and female medaka fish with five replications. The parameters measured were survival rate, oxygen consumption rate between male and female of O. celebensis, temperature and pH. Statistically the survival rate of male and female medaka fish showed no statistically significant difference (P>0.05). Likewise, there was no difference between the oxygen consumption levels of male and female medaka fish before and after exposure to chlorpyrifos insecticide (P>0.05). This study concluded that there was no difference in susceptibility to chlorpyrifos insecticides between male and female medaka fish. 

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