JOURNAL OF INDONESIAN TROPICAL FISHERIES (JOINT-FISH) : Jurnal Akuakultur, Teknologi dan Manajemen Perikanan Tangkap dan Ilmu Kelautan

PERBANDINGAN IMUNOSTIMULAN YANG BERBEDA TERHADAP GAMBARAN DARAH UDANG VANAME (Litopenaeus vannamei) DI TAMBAK PENDAMPINGAN PT SURI TANI PEMUKA

Safira Surya Himzanah, Mad Rudi, Himawan Prasetiyo, Narendra Santika Hartana — Sat, 30 Dec 2023 00:00:00 +0000

Vaname shrimp (Litopenaeus vannamei) is one of the main commodities in the field of Indonesian fisheries. Effort to overcome the disease, one of which is done by giving immunostimulants to the feed. Immunostimulants can be used include Lactobacillus and Saccharomyces (treatment A) and selenium and β-glucan (treatment B). The purpose of this study is to determine the effectiveness of immunostimulants based on non-specific immune systems and water quality parameters such as salinity. This research design uses experimental with a randomized group design on 2 plots of 3 replicates in PT Suri Tani Pemuka (STP) assistance pond. It uses 2 factors, namely salinity, maintenance, and different types of immunostimulants. The parameters measured are blood images of total hemocyte count (THC), differential hemocyte count (DHC), and maintenance water quality. The results of THC observations showed that the administration of Lactobacillus and Saccharomyces in the second week of observation gave real different results (P<0.05) with an average value of 8.65x10⁶ cel / ml. DHC results with administration of Lactobacillus and Saccharomyces as well as selenium and β-glucan gave significantly different results (P<0.05), meaning that immunostimulant administration can affect the amount of granular and hyaline in vaname shrimp hemolymph. Administration of Lactobacillus and Saccharomyces as well as selenium and β-glucan can increase 2-8% and 3-4% respectively against granular amounts. The maintenance salinity factor gives no real difference (P>0.05) to THC and DHC values. Giving Lactobacillus and Saccharomyces can be an alternative in increasing immunity in vaname shrimp rearing with a salinity of 2-7 ppt.

PENDUGAAN DAERAH PENANGKAPAN IKAN TENGGIRI (Scomberomorus commerson) BERDASARKAN SUHU PERMUKAAN LAUT DAN KLOROFIL-A DI PULAU TUNDA

Windi Nur Widianingsih, Ferry Dwi Cahyadi, Agung Setyo Sasongko — Sat, 30 Dec 2023 00:00:00 +0000

The purpose of this study was to map the potential fishing ground for mackerel (Scomberomorus commerson) from March to June from 2020 to 2022. The method used is by remote sensing with Aqua MODIS imagery to obtain sea surface temperature (SST) and chlorophyll-a. The results showed that there were fluctuating changes in measurements of SST, Chlorophyll-a, and Points which were suspected to be potential locations for mackerel (Scomberomorus commerson) fishing in Tunda Island waters. The value of Sea Surface Temperature (SST) for the last three years, the highest SST of 30.5°C occurredin May 2020 and the lowest (SST) was in June 2020 with a temperature value of around 25.5°C. The value of the concentration of chlorophyll-a in the waters of Tunda Island is very diverse, the highest chlorophyll-a occurs in March and May 2022 with a range of 2.5 mg/L, while the concentration value of chlorophyll-a occurs in May with a value of 0.5 mg/L L. Combining SST and Chlorophyll-a images so as to find the mapping location points for Potential Mackerel (Scomberomorus commerson) Catching Areas, which can be found at coordinates 5° 48'43'S to 106°16'47 E with predictions of the highest abundance of catching points in March namely as many as 19 points of Potential Fishing Areas.

SISTEM BAGI HASIL PADA USAHA PENANGKAPAN IKAN DI KELURAHAN LAPPA, KECAMATAN SINJAI UTARA, KABUPATEN SINJAI

Nurliani Nurliani, Andi Asni, Ida Rosada, Saida Saida, Nur Fadilla — Sat, 30 Dec 2023 00:00:00 +0000

The aim of the research is to describe the cooperation agreement between ship owners and fishermen based on the type of ship, calculate operational costs, catch value, income and analyze the profit-sharing system between ship owners and fishermen. The sample was determined using proportional random sampling by taking 10% of the population of 209 ship owners. Using descriptive analysis methods, profit analysis, and profit-sharing system analysis. The results of the research show: 1) cooperation agreements between ship owners and fishing workers are carried out verbally and have been passed down from generation to generation, 2) fishing operations on motor boats go through pre-exploitation, exploitation (fishing ground) and post-exploitation (marketing) stages, while in Outboard motorboats prepare fishing permit documents, check the condition of the ship and fishing equipment, prepare provisions, crew, and determine the fishing area, 3) average operational costs and catch value for motorboats are IDR 7,289,500 and IDR 25,358,333, respectively. outboard motor boat type Rp. 459,500 and Rp. 4,150,000, 4) profit sharing system between motor boat owner and worker fishermen on motor boat type, namely 50%:50% (boat owner Rp.9.036.000 fisherman Rp. 1,666,387/ person), while between outboard motor boat owners and working fishermen it is 60%:40% (boat owner IDR 2.214.300: fisherman IDR 1,476,200/person

PENGARUH PENAMBAHAN TEPUNG MAGGOT (Hermetia illucens) PADA FORMULASI PAKAN TERHADAP PERTUMBUHAN DAN KELANGSUNGAN HIDUP IKAN MAS (Cyprinus carpio)

Baiq Gustina Mardiana, Dewi Putri Lestari, Zaenal Abidin — Sat, 30 Dec 2023 00:00:00 +0000

The purpose of this study was to determine the effect of adding maggot meal (Hermetia illucens) to feed formulations on the growth and survival of common carp (Cyprinus carpio). This research was conducted in April-May 2023 at the production and reproduction laboratory, Aquaculture Study Program, Faculty of Agriculture, University of Mataram (UNRAM). Proximate testing was carried out in the laboratory of nutrition and fedder, Faculty of Animal Husbandry, University Mataram. This study used an experimental method. The research method used Completely Randomized Design (RAL) by being tested using Analysis of Variance (ANOVA), using four treatments and three repeats P1 (0% maggot meal), P2 (10% maggot meal), P3 (20% maggot meal), P4 (30% maggot meal). The results showed that giving maggot to all treatment parameters, absolute weight, specific growth rate, feed conversion ratio (FCR), feed utilization efficiency (EPP), survival rate (SR) had a significant effect on the research tested. Conclusion The addition of different maggot meal to feed formulations can affect growth and survivalrate. The addition of maggot meal up to 30% in feed formulations in the maintenance of common carp can improve growth and survivalrate better than using feed without the addition of maggot meal.

ANALISIS BIOEKOLOGI PERAIRAN PESISIR UNTUK PENGEMBANGAN BUDIDAYA KEPITING BAKAU (Scylla serrata, Forskal) DENGAN HUTAN MANGROVE (SylvoCrab)

Rustam Rustam, Jayadi Jayadi, Darmawati Darmawati — Sat, 30 Dec 2023 00:00:00 +0000

The aims of this research are; (1) Ecological analysis of coastal waters for development of cultivating mangrove crab (2) Assessing the condition of mangrove forest ecosystems, (3) testing prototypes of technology for crab cultivation businesses in mangrove forest areas. Primary data includes physical and chemical parameters as well as mangrove forest conditions. The results of observations of the condition of the mangrove area, for the Important Index Value (INP) of mangroves, Rhizopora, sp sampling I (191.2), sampling II (181.7), sampling III (205.0), this shows that in sampling III for The Rhizopora sp type has a greater role in maintaining the sustainability of the ecosystem. For the dominance index value, the value for all stations is 0.02 – 0.03. This shows that there is no species that dominates other species or the community is in a stable condition. Meanwhile, the species diversity index value in the entire sampling area has low species diversity, namely 0 < H < 2. The results of physical observations of waters, the results of tidal data processing using the Admiralty method show that the mean sea level (MSL) is 200.41 cm, The lowest low sea level (LLWL) is 112.86 cm and the highest high sea level (HHWL) is 279.41 cm, the tidal range (range) is 166.36 cm. From the value of the Formzahl number (F value = 1.89) it can be concluded that the type of tide around the observation location is a mixed tidal type that tends to be single daily. The results of observations of water salinity parameters at the research location ranged from 25.0 - 27.1 ‰ with an average value of average 26.0 5 ‰, pH, nitrite (NO2), nitrate (NO3) and phosphate (PO4) in water. The average pH value of 6.90, the average nitrite content value of 0.020, the average nitrate content value of 0.236 and the average phosphate content of 0.145 indicate good water quality for mariculture purposes, and also indicate the condition of the waters that have not been polluted.The growth of mud crabs fed with crab food had a good growth effect compared to those given trash fish feed.

ANALISIS HUBUNGAN PANJANG BERAT IKAN KERAPU (Epinephelus sp) YANG DIDARATKAN DI KALIADEM DAN PASAR IKAN MUARA ANGKE, JAKARTA

Thu, 04 Jan 2024 06:54:23 +0000

Grouper (Epinephelus Sp.) is an economically important fish that lives in coral reefs and is widely consumed by the public. It is necessary to analyze the relationship between the length and weight of fish at the Kaliadem fish landing site and Muara Angke market. This research aims to determine the relationship between length and weight of fish. Data on the length and weight of the fish were taken from a sample of 20 grouper fish sold at the two locations. This Research was carried out in April 2018. This study used survey method, observation of grouper morphology. The analysis used in this research uses multiple linear regression analysis. The research showed that grouper fish had a length range of 128 mm – 169 mm and a weight range of 31 g – 65 g with an average length of 144.5 mm and an average weight of 42.75. The results of linear regression on the relationship between the length and weight of grouper fish samples produced a regression equation Y = 2.7424x – 9.8972 with a value of b = 2.74 and a coefficient of determination of 0.9281. significant b < 3 means the allomatric growth pattern is negative and 98.97% of changes in fish weight occur due to an increase in fish length, while 1.03% is caused by other factors. It can be concluded that length growth is faster than weight gain in grouper fish. The condition factor value of the grouper this research had a Fulton condition factor value (K) ranging from 2.95 to 3.17 and a relative weight (Wr) ranging from 86.50 to 106.41 with an average Wr value of 100.31.

ANALISIS KESESUAIAN MODEL PENGEMBANGAN SILVOFISHERY KAWASAN MANGROVE DI LANTEBUNG

Ahmad Sajjad, Jayadi Jayadi, Asbar Asbar — Sun, 31 Dec 2023 00:00:00 +0000

Silvofishery (silvocrabs) is a traditional technology aquaculture system that combines fishery business (crab cultivation) with mangrove planting. This study aims to: (1) analyze the feasibility of mangrove land for silvofishery activities, especially in crabs in terms of physical, chemical and biological aspects of the Lantebung mangrove area. (2) analyze silvofishery models (forms) for crabs that can be applied and are in accordance with the Lantebung Mangrove Area. The study was carried out by direct observation methods in the field by taking data on physical, chemical, and biological parameters using direct measurement methods and referring to several other literature. Based on the results of the analysis of the 3 stations observed, station 1 and station 2 are classified as quite feasible while station 3 is classified as very feasible to support silvocrabs development activities. So that the cultivation of silvocrabs is feasible to be developed in the Lantebung Mangrove Area precisely on.

STUDI KERAPATAN DAN PENUTUPAN JENIS LAMUN DI PERAIRAN ENGGANO, BENGKULU

Sun, 31 Dec 2023 00:00:00 +0000

Seagrass has an important role in coastal ecosystems. Seagrass is a primary producer and constituent of habitats and ecosystems that support life on coral reefs and mangroves or coastal land The distribution of seagrass in Indonesia is quite extensive, covering almost all water areas in Indonesia. Information regarding the distribution of seagrass in the waters of Enggano Island is still limited, so a study is needed to provide information regarding the distribution of seagrass in this area. This study aims to identify the types of seagrass and variations in their density and cover on Enggano Island, Bengkulu. This research was conducted in March 2022 in Kaana Village, Enggano, Bengkulu. Seagrass data collection method using purposive sampling method. Sampling was carried out at four stations, where each station was repeated three times. Seagrass was identified at the research location; its density and closure were calculated. Measurement of water quality is done in situ. The results of this study indicate that three species of seagrass were found, namely Enhalus acoroides, Cymodocea rotundata and Halodule uninervis. However, the types of C. rotundata and H. Uninervis were scattered in all research stations. The highest cover was found at station 1 with 86% cover while the lowest cover was found at station 3 with 16% cover. There are variations in composition and density at each research station, this shows that there is environmental influence and there is not an even distribution of seagrass in the area

ANALISIS TINGKAT PEMAHAMAN MASYARAKAT DAN STRATEGI PENGELOLAAN REHABILITASI MANGROVE DI DESA PASIMARANNU KECAMATAN SINJAI TIMUR, KABUPATEN SINJAI

Musrafil Musrafil, Kasmawati Kasmawati, Hamsiah Hamsiah — Sun, 31 Dec 2023 00:00:00 +0000

The purpose of this study was to determine the level of community understanding and strategies for managing mangroves in Pasimarannu Village, East Sinjai District, Sinjai Regency. This research was conducted in Pasahkue Hamlet, Pasimarannu Village from March to April 2023. The method in this study was carried out by interviews and questionnaire assistance with 70 respondents as samples. As well as analyzed with Likert Scale Analysis to determine community understanding of mangrove rehabilitation and SWOT Analysis to determine strategic direction for mangrove management in Pasimarannu Village. The results showed that the level of community understanding of mangrove rehabilitation in Pasimarannu Village obtained an ecological understanding score of 65.83% (good category), participation understanding of 71.25% (good category), and understanding of rehabilitation with a value of 76.71% ( good category). There are 2 strategic priority directions for mangrove management in Pashakue Hamlet, Pasimarannu Village based on the position matrix, swot matrix and determining alternative strategic ranking priorities in the WO strategy, namely: 1. Providing support for mangrove management policies as coastal protection so that the number of mangroves can be maintained or added b. Increase planting mangroves and carrying out strict supervision.

APLIKASI PEMBERIAN PROBIOTIK YANG BERBEDA IKAN LELE SANGKURIANG (Clarias gariepinus) DI DESA BANYUAJUH KAMAL BANGKALAN

Sun, 31 Dec 2023 00:00:00 +0000

Aquaculture activities play an important role in fulfilling aquaculture commodities. One of them is catfish farming activities. Complex problems related to feed efficiency in the fisheries sector are related to the ever-increasing price of feed. Adding fish probiotics to feed is an alternative solution for cultivation businesses. The aim of this research is to determine the comparative effect of different probiotic applications on physical, chemical and biological factors in water, weight and length increase in catfish (Clarias gariepinus). This research is an experimental study using 3 types of probiotic treatments (MinaPro, YEB Consortium, and control). The pond used in this research measures 2x2 m2 and contains 240 individuals. The results of temperature measurements in all treatments were 27.64-32.18 ̊C. The pH measurement results were 5.118-14.15. Results of salinity measurements with a value of 0 ppt. The results of measuring the dissolved oxygen value were 0.345-8.908 ppm. The use of different types of probiotics had an effect on the growth of catfish (Clarias gariepinus) with the best treatment using the MinaPro probiotic with an average final weight of 15.59 kg with a length of 14.54.