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- DENSITY AND DISTRIBUTION PATTERN OF BIVALVES IN WATERS OF MALANG RAPAT
VILLAGE, GUNUNG KIJANG DISTRICT, BINTAN REGENCY
Authors: Sherry Febrarismono Soehendrawan, Febrianti Lestari, Dedy Kurniawan
Pages: 1049 - 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.
PubDate: 2022-03-18
DOI: 10.23960/aqs.v10i2.p1049-1060
Issue No: Vol. 11, No. 1 (2022)
- ANALYSIS OF RIVER WATER POLLUTION DUE TO DISPOSAL OF NATURAL STONE
INDUSTRIAL WASTE IN CIREBON REGENCY
Authors: Sri Wahyuningsih, Feti Fatimatuzzahroh, Iyat Hamiyati
Pages: 1061 - 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.
PubDate: 2022-03-19
DOI: 10.23960/aqs.v10i2.p1061-1076
Issue No: Vol. 11, No. 1 (2022)
- DISTRIBUTION ANALYSIS AND MARKETING MARGINS OF FRESH FISH CATCHES IN TPI
SENDANGBIRU, MALANG REGENCY, EAST JAVA
Authors: Elly Fiddyawati, Asri Sawiji, Fajar Setiawan
Pages: 1077 - 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%.
PubDate: 2022-03-20
DOI: 10.23960/aqs.v10i2.p1077-1100
Issue No: Vol. 11, No. 1 (2022)
- UTILIZATION OF FERMENTED SPINACH LEAVES (Amiranthus spinosus L.) IN FEED
FORMULATION TO STIMULATE MOLTING OF MANGROVE CRAB (Scylla serrata)
Authors: Marniati Marniati, Salnida Yuniarti Lumbessy, Fariq Azhar
Pages: 1101 - 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.
PubDate: 2022-03-29
DOI: 10.23960/aqs.v10i2.p1101-1114
Issue No: Vol. 11, No. 1 (2022)
- DIFFERENCES IN THE VULNERABILITY OF MEDAKA FISH (Oryzias celebensisis)
MALE AND FEMALE TO CLORPYRIPHOS INSETICIDE
Authors: Sulfitratullah Sulfitratullah, Khusnul Yaqin, Nita Rukminasari
Pages: 1115 - 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.
PubDate: 2022-03-21
DOI: 10.23960/aqs.v10i2.p1115-1124
Issue No: Vol. 11, No. 1 (2022)
- GROWTH AND SURVIVAL OF TILAPIA (Oreochromis niloticus) WITH STARVED
PERIODICALLY IN BEDENG MUNIR VILLAGE, SOUTH PAGAR ALAM
Authors: Verma Agustina, Retno Cahya Mukti
Pages: 1125 - 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.
PubDate: 2022-03-24
DOI: 10.23960/aqs.v10i2.p1125-1130
Issue No: Vol. 11, No. 1 (2022)
- EFFECTIVENESS OF FERMENTED Ul-va lactuca ON FEED ON GROWTH RATE OF CARP
(Cyprinus carpio)
Authors: Nurbety Tarigan, Yatris Rambu Tega, Yatris Rambu Tega
Pages: 1131 - 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.
PubDate: 2022-04-01
DOI: 10.23960/aqs.v10i2.p1131-1140
Issue No: Vol. 11, No. 1 (2022)
- DIGITAL MARKETING OF FISHERY PRODUCTS, MARKETING STRATEGY DURING THE
COVID-19 PANDEMIC
Authors: Nurhuda Annaastasia, Desi Sriwulan, Wa Jali, Abdul Sarifin
Pages: 1141 - 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.
PubDate: 2022-04-01
DOI: 10.23960/aqs.v10i2.p1141-1148
Issue No: Vol. 11, No. 1 (2022)
- Assesing local community to Existence of Local Marine Sanctuary “Kawasan
Kelola Laut” in Saponda Island, Konawe Regency, Southeast Sulawesi
Authors: Baru Sadarun, Subhan Subhan
Pages: 1005 - 1014
Abstract: The study was conducted between February and June 2020. The pesence of local institution, which is responsible for marine and fisheries resource management known as “Kawasan Kelola Laut (KKL*)”, was the main reason why the study was carried out in Saponda Island. The objective of the study was to assess communtity preception on the presence of KKL*. Cluster random sampling method was selected by involving 94 respondents as representative of the perception. Principal component analysis (PCA) was selected, through which the relation between each respondent charateristic and level of perception was indentified. Result showed that respondent perception had positively correlated to meeting frequency (r = 0.67). the higher frequency of participant attended either formal or non-formal meeting, the better community perception would be formed. It was estimated thar respondent received more information and socializaton on the essential of KKL* during the meeting.Keywords: Perception, Kawasan Kelola Laut, Saponda Island
PubDate: 2021-11-14
DOI: 10.23960/aqs.v10i1.p1005-1014
Issue No: Vol. 10, No. 2 (2021)
- rophic-Saprobic Index Based on Macrozoobenthos Abundance as Indicator of
Pollution Status in The Banjir Kanal Barat River.
Authors: Iffa Nadiya Hanifah, Suryanti Suryanti, Siti Rudiyanti
Pages: 1015 - 1022
Abstract: The Banjir Kanal Barat River is one of the major rivers in the Semarang City and there are various activites along the river by the citizen which will give an impact to lead to pollution on water quality. Macrozoobenthos can be used as bioindicator because of it’s low of mobility, easy to catch and identify. The purpose of this study was to determine the community structure of macrozoobenthos, the saprobic index value and to determine the pollution status of The Banjir Kanal Barat River.This research was conducted in June-July 2020 using a purposive sampling technique with a total of three stations. The 1st Station is dredged waters in 2019, the 2nd Station is polluted waters due to chicken farm waste, and the 3rd Stations is polluted waters due to domestic waste.The identification of macrozoobenthos use FAO book (1998) and Conchology.be website.The Calculation of community structure of macrozoobenthos consist of diversity, uniformity, and dominance index.The data analysis in this research are data analysis of community structure of macrozoobenthos and saprobic index. The result showed that the Diversity Index (H’) ranged from 0,98 to 1,17 while the Uniformity Index (e) was between 0,56-0,71 and the Dominance Index (C) ranged from 0,43 to 0,45. There were 8 types of macrozoobenthos, consisting of 1 type from the polysaprobic group, 2 types from the β-mesosaprobic group and 5 types from the non-saprobik group. Based on the calculation of the saprobic index value obtained -0,11 and the Tropic Saprobic Index was -1,07. The pollution status of the Banjir Kanal Barat River is indicated moderate to severe pollution.
PubDate: 2021-11-14
DOI: 10.23960/aqs.v10i1.p1015-1022
Issue No: Vol. 10, No. 2 (2021)
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