TORANI: Journal of Fisheries and Marine Science
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149 research outputs found
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Length-Weight Relationship and Condition Factor of Yellowfin Tuna (Thunnus albacares) from Demta Coast, Jayapura Regency, Papua
Full text linkThe population of Thunnus albacares yellowfin tuna from the Scombridae family is very abundant in North Papua Waters (WPP 717). This study aims to analyze the parameters of population dynamics based on the long-weight relationship and condition factors on Thunnus albacares in Demta Coastal Waters, Jayapura Regency. Fish data collection uses passive and active fishing methods using gill nets, handlines, and long line fishing through fishing activities by traditional fishermen during April - June 2022. Data analysis uses analysis length-weight relationship and condition factor. The results of this study found that the population structure of yellowfin tuna (T. albaceras) was very diverse in the waters of North Papua, with a negative allometric growth pattern (b < 3), i.e. the growth of body length was faster than weight. The condition factor averaged 1.1302 with a maximum of 1.4718 and a minimum of 0.7028. Where in the gonadal maturity period morphometric adaptation occurs, weight growth becomes faster and body length becomes slower
Effect of Bacillus Sp. Bacteria on The Growth of Saline Tilapia (Oreochromis niloticus) in The Biofloc System
Full text linkOne alternative to increase production is to maximize the use of biofloc system cultivation technology. However, the problems in biofloc cultivation are; the difficulty of cultivators to replace or alternatively use commercial bacteria to increase production. One of the efforts made is the use of bacillus sp. The aim of the study was to determine the optimal concentration of bacillus sp that could increase the growth of saline tilapia. This study used a completely randomized design (CRD) with four treatments, each repeated three times, so that there were 12 units. This study tested the concentration of Bacillus sp. 0.0028 ml/L, 0.0030 ml/L, 0.0032 ml/L, and 0.0034 ml/L. The results showed that the highest protein retention was 9.91%, fat retention was 2.05% and the body glycogen content of saline tilapia was 0.68%. This shows that the administration of Bacillus sp. in saline tilapia culture media has a real effect
The Characteristics of Fishing Ground Using Purse Seine in Makassar Strait and Flores Sea
Full text linkIn order to optimally utilize marine fishery resources, the Government of the Republic of Indonesia divides Indonesian waters into 11 Fisheries Management Areas (IFMA), one of which is IFMA 713 which includes the waters of Bone Gulf, Bali Sea, Flores Sea and Makassar Strait. This study aims to provide information on the utilization of pelagic fish resources with a focus on the characteristics of fishing areas using purse seine fishing gear in the Makassar Strait and Flores Sea. In this study, 62 fishing trips using purse seines were carried out, each has 31 trips fishing operation in the Makassar Strait and in the waters of Flores Sea, respectively. The main catch and number for each water area was skipjack tuna (Katsuwonus pelamis) as many as 2,367 fish (Makassar Strait). While in the Flores Sea area, it is dominated by little tuna (Euthynnus sp) with a total of 11,039 fish. The results of this study indicate that the correlation of sea surface temperature with chlorophyll-a in the waters of the Makassar Strait and Flores Sea has a negative relationship with an optimum sea surface temperature of 30.5 °C for skipjack tuna and 28.0 °C for little tuna which corresponds to the chlorophyll-a concentration of 0.3 mg m-3 (skipjack tuna) and 0.2 mg m-3 for little tuna. The vertical distribution of skipjack tuna was found at the optimum depth of around 50 m, while most little tuna was caught in deeper waters around 250 m
Study of Fishers\u27 Perceptions on Environmentally Friendly Fishing Gear Criteria on The East Coast of North Sumatra
Full text linkThis study aimed to describe the development of types of fishing gear in the waters of the east coast of Sumatra from Belawan Waters to Serdang Bedagai Waters and to examine the perceptions of fishers based on the social characteristics of fishers towards environmentally friendly fishing gear based on the Code of Conduct for Responsible Fisheries (CCRF). The method used in this research is descriptive research using the survey method. The population in this study were fishers based in Belawan and Serdang Bedagai waters and using traps and gill nets, as many as 6943 people, with the simple sampling method or slovin method, the results of the sample count were 100 people from the population. Based on eight categories (CCRF) to understand fishers\u27 perceptions of environmentally friendly fishing gear, including the level of selectivity, biodiversity, ecological diversity, not destroying habitat, the safety of fishers and consumers, based on social conditions, based on biodiversity, and based on fish quality, the level of very understanding is 13.2 %, understand 25.2%, neutral 26.7%, don\u27t understand 23.3% and don\u27t understand 11.4%. This study results indicate that the respondents, in general, have begun to realize environmentally friendly fishing gear based on the CCRF
Differences in Catches based on The Use of different Colour of Collector Lamp on the Boat Lift-Net in Polewali Mandar District, West Sulawesi
Full text linkBoat lift net is an active fishing gear that operates at night using a lamp whose light functions to attract pelagic fish. The purpose of this study is to determine the difference between the catches of the two boat lift net using collecting lights of different colors, this research was held in Polewali Mandar waters in September-November 2020 by following the operation of catching 2 boat lift units. The results showed that the boat using the green collecting light caught 1876.6 kg more fish than the boat using the red light 1534.4 kg, and boat that use green lights have more variety of fish species than boat that use red lights. The different types of fish in the two units of boat lift net are grouper, kerung-kerung, and shark
The Application of Duckweed Liquid Organic Fertilizer to Cell Populations in the Culture of Nannochloropsis oculata
Full text linkNannochloropsis oculata is one of the single-celled microalgae that has been commonly cultured in the marine fish culture sector as zooplankton feed which has high nutritional content. To support growth and reproduction, the availability of nutrients in N. oculata culture media needs to be considered. This study aims to determine the effect of the best liquid organic fertilizer (POC) duckweed (L. minor) on cell population growth in N. oculata culture. The method used in this research is an experimental method using Completely Randomized Design (CRD) with 5 treatments, namely P0 (TSP 10 mg + ZA 40 mg + urea 45 mg) as a control treatment, P1 (POC duckweed 5%), P2 (POC duckweed 10%), P3 (POC duckweed 15%), and P4 (POC duckweed 20%) were repeated 3 times in each treatment. The initial density of N.oculata cells was 2 x 106 cells/ml in a culture media volume of 1000 ml. Growth was observed every day for 14 days. The results showed that the POC concentration of 10% duckweed can be used as an alternative to inorganic fertilizers (TSP, ZA, and urea) because it can increase cell population growth by 30.92 ± 1.84 cells/ml at the peak of the exponential phase, as well as the value of the growth rate. cells 0.38 ± 0.03 cells / ml / day and cell generation time of 43.88 ± 3.24 hours were not significantly different (p> 0.05) with P0 treatment (TSP, ZA, and urea). The range of water quality parameters in the culture media during the study were temperature 25-33oC, pH 4.89-8.40, salinity 25-38.33 ppt, and DO 4.07-7.27 ml / l. The measured value of water quality in culture media was still within the tolerance limits of N. oculata cells so that cells could still grow and divide.  
Design The Intersection of Upstream Search Data Accuracy With Downstream Traceability Fisheries Business in Indonesia
Full text linkFisheries business actors in Indonesia have different backgrounds in knowledge, education, social and psychology. This diversity creates obstacles to the application of traceability of Indonesian fishery products, so that they lack competitiveness in the international market. The research aims to find some simple schemes that are easily understood by Indonesian fisheries businesses to implement traceability extensively. Descriptive research method. Data were obtained from terrestrial surveys and interviews with business actors spread across various fishery centers in East Java, since 2015 until now. The results of the observations are arranged in a simple matrix to find the suitability of the behavior of the design business actors at each observation point. The results of the analysis show that: the commitment and consistency of the fisheries businessman is largely determined by the factors of knowledge, education, social, and psychology respectively. Knowledge is the best aspect of power to create the drafting of search data; because this aspect turns out to be \u27forced\u27 to \u27understand\u27 by all parties doing business. The design of the accuracy of the meeting point of upstream search data with downstream traceability can be realized through the dissemination of knowledge in a simple and applicable manner continuously, extending to all lines and implanted to consumers from an early age. The weak implementation of traceability in Indonesia is caused by the lack of consumer understanding of the importance of search data; which has a strong impact on suppliers to "ignore" the implementation of traceability for local products
Financial Analysis of Vanname Shrimp (Litopaneus vannamei) Cultivation in Supra-Intensive Farming in CV. Dewi Windu, Barru Regency
Full text linkThis study aims to analyze the profitability of vanname shrimp (Litopenaeus vannamei) cultivation using the supra intensive method and to determine the feasibility of cultivating vanname shrimp (Litopenaeus vannemei) using the supra intensive method in CV. Dewi Windu, Barru Regency. This research was conducted from March to April 2020. The sampling method used was the case study method in CV. Dewi Windu where the research goes directly to the field by taking respondents (samples) from the representative population using a questionnaire as the main data collection. Sources of data used are primary data and secondary data and then analyzed using cost and income analysis as well as business financial analysis. Based on the results of the analysis of business profits obtained in the super intensive vanname shrimp cultivation business of Rp. 3,914,733.10. Where the profit is obtained from the total revenue of Rp. 34,626,400,000 minus the total cost used of Rp. 15,050,734,400. The feasibility of Vanname Shrimp Cultivation at CV Dewi Windu was obtained from the results of the NPV, B/C Ratio, IRR, and Payback Period where each was obtained. The NPV (Net Present Value) obtained in the supra-intensive vanname shrimp culture in the next five years is Rp. 3,772,305,286. Comparison of the value of net cash receipts in the future or Net B/C ratio in the supra intensive vanname shrimp farming business is 1.1. Interest rate or IRR (Internal Rate of Return) in the cultivation of super-intensive vanname shrimp is 25.4%. As for the payback period (PP) in the cultivation of super-intensive vanname shrimp, which is for a period of less than 1.95 years or equal to 23.4 months.
Keywords: vaname shrimp, revenue, profit.
The level of The Utilization of Main Facilities of Birea Fish Landing Base, Bantaeng Regency
Full text linkThis study aims to identify main facilities and determine the level of the main facilities utilization of Birea fish landing base, Pa\u27jukukang District, Bantaeng Regency. The research was conducted from May to July 2020. The method used in this research is a case study. Primary data was consisting of the length of the pier, the distance between ships, the length of time to moor, the length of the breakwater and the length of the trip, and the size and number of ships anchored, were collected through direct observation in the field. Meanwhile, secondary data such as catch production data, development of the number and types of fishing units, the size of the port pool area, and the depth of the waters were taken through the interviews method. The utilization rate of the main facilities utilization of Berea fish landing base are a pier utilization rate of 90.5%, a port pool of 72.5%, a land port 86%, and two meters of water depth are required. Based on the research results, it is found that the long pier is still possible to accommodate ships that are anchored, while the port pool and portland still meet the requirements, however, dredging is necessary for dredging the depth of the waters for shipping in and out of ships.
Key words: birea fish landing base, the level of main facilities utilization, bantaeng regency
Communities Vulnerability Mapping of Spermonde Coral Islands
Full text linkThe purpose of this research is to map the vulnerability of communities in seven islands of Spermonde. Vulnerability assessment was conducted in July 2013 using an environmental and socio-economical stand point. Identification of the vulnerability issues were grouped into indicators (climate, island morphological, marine resources and socio-economical changes), with each given a scale of 1-5.and attributes in the form of a semi-structured questioner. To check for the type and severity of a disaster, 62 respondents were asked to rank the disaster on a scale of 1-4. Results indicate that the majority of respondents find that change in climate, island morphology, marine resources and socio-economical conditions hardly affect them. The disaster that they fear the most is the danger of losing their source of income. In terms of vulnerability index, Bone Tambu and Lumu-Lumu islands are under very high vulnerability for Island and Socio-economic change. In terms of Climate and Marine Resource change, there are no significant differences among the islands. The trends show that these two categories fall under medium to high, with marine resource dynamic change always being higher than the climate change index, except in Kapoposang Island. Overall, there are no differences between each zonation in vulnerability indexes