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  Subjects -> WATER RESOURCES (Total: 160 journals)
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  This is an Open Access Journal Open Access journal
ISSN (Print) 2301-816X - ISSN (Online) 2579-7638
Published by Universitas Lampung Homepage  [7 journals]

    • Authors: Agus Kurniawan B, Asriani Asriani, Muhammad Subhan Hamka
      Pages: 1355 - 1364
      Abstract: Kappaphycus alvarezii seaweed is important for the processing industry because it contains carrageenan used as a stabilizer, thickener, material forming an emulsifier. This study aimed to find the best and optimal initial seed weight treatment for maximum biomass production, growth rate, and carrageenan content. The research location was in the waters of Aeng Batu-Batu Village, Takalar Regency, South Sulawesi in August-September 2022. The randomized block design method (RAK) consisted of 4 treatments each with 4 repetitions. Seaweed seedlings from spores were weight of 20 g, 40 g, 60 g, and 80 g planted at 60 cm depth respectively and maintained for 45 days. Data analysis used (ANOVA) and W-Tuckey to determine the differences between treatments. The result of the analysis of variences showed that the weight of 40 g, 60 g, and 80 g had an effect on the biomass production, growth rate, and K. alvarezii carrageenan content. However, the highest yield was obtained at a weight of 20 g which had a very significant effect (p<0.01).
      PubDate: 2023-11-02
      DOI: 10.23960/aqs.v12i1.p%p
      Issue No: Vol. 12, No. 1 (2023)
  • OCCURRENCE OF Bregmaceros nectabanus (WHITLEY, 1941) IN THE GULF OF

    • Authors: Ferhat Çağıltay, Mehmet Gökoğlu, B. Ahmet Balcı, Alper Yıldız
      Pages: 1365 - 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.
      PubDate: 2023-11-03
      DOI: 10.23960/aqs.v12i1.p1365-1369
      Issue No: Vol. 12, No. 1 (2023)

    • Authors: Mehmet Gökoğlu, Erkan Biçer, Ferhat Çağıltay, Jale Korun, Mesut Yılmaz, Alper Yıldız
      Pages: 1370 - 1376
      Abstract: Shrimp fishing is done by trawling in the deep waters of Antalya and Finike Gulfs. The shrimp species generally caught during this fishing are Aristaeomorpha foliacea, Aristeus antannatus, Plesionika edwardsii, P. martia.  Besides these species, Pasiphea multidentata and P. sivado, which have no economic value, are rarely caught. Two different shrimp species were caught during trawling in the 400-500 m deep waters of Finike Bay on February 7, 2022. Since the fishermen did not know the shrimp species they caught, they wanted the species to be identified. It has been determined that these shrimp species caught in the deep waters of Finike Bay are Oplophoroidae family members i.e. Acanthepyra eximia and A. pelagica. These caught shrimps are pelagic species. With the discovery of these species in the Finike Bay, two more species were added to the Decapod fauna of the Finike Bay.
      PubDate: 2023-11-03
      DOI: 10.23960/aqs.v12i1.p1370-1376
      Issue No: Vol. 12, No. 1 (2023)
           CARRAGEENAN (Eucheuma cottoni)

    • Authors: Ine Maulina, Abiomi Ciptoning Bentali, Asep Agus Handaka Suryana
      Pages: 1377 - 1389
      Abstract: Biodegradable tote bag is a processed carrageenan product from seaweed (Eucheuma cottoni) which is processed into fashion products. Consumer preferences are used to see consumer choices in determining the most preferred attributes of biodegradable tote bag products. This study aimed to see consumer preferences for biodegradable tote bag products. This research was conducted in Cibinong District, Bogor Regency as a general segmentation and Jatinangor District, Sumedang Regency as a special segmentation. The research method used was quantitative descriptive with analysis using frequency distribution and the Mann-Whitney U Test. The sampling technique was purposive sampling. The results showed that, out of the 6 attri-butes, there were 2 attributes that had a real difference between general segmentation and student segmentation, namely color attributes and the size of biodegradable tote bag products. Meanwhile, the other 4 attributes have no noticeable difference, namely texture, aroma, water resistance, and weight durability. Consumer preferences in general segmentation and the majority of students choose biodegradable tote bags that have a dark green color, smooth texture, no aroma, resistant to water, the ability to withstand a weight of > 1 kg, and measuring 30 x 40 cm.
      PubDate: 2023-11-03
      DOI: 10.23960/aqs.v12i1.p1377-1389
      Issue No: Vol. 12, No. 1 (2023)

    • Authors: Wahyu Hidayat, Adi Susanto, Desy Aryani
      Pages: 1390 - 1400
      Abstract: The Pamarayan Dam is located in Cikeusal District, Serang Regency, Banten Province where many freshwater fish cultivators based on floating net cages are found. Important aspects that are assessed in aquaculture activities are measuring water quality, location suitability, and productivity. This study aimed to determine the site suitability criteria and analyze the existing performance of fish farming activities with floating net cages. The research was conducted from January to March 2023 at the Pamarayan Old Dam at 4 stations. Water sampling was carried out in situ and ex situ including temperature, pH, DO, TDS, current, brightness and depth, BOD, COD, total P, total N, TSS, and ammonia. Water quality analysis was carried out at the DLH laboratory in Serang City and UPT LABKES in Serang Regency. Additional data by conducting interviews with cultivators. The results showed that the Pamarayan Dam had suitability in the S2 class (appropriate) at all stations. This is based on water quality, most of which are still in accordance with class 3 quality standards including parameters of temperature, pH, BOD, TSS, DO, COD, total P, and ammonia. Cultivation performance at the Pamarayan Dam has a large advantage, where the average net profit per cultivation cycle is Rp. 41.332.000.
      PubDate: 2023-11-03
      DOI: 10.23960/aqs.v12i1.p%p
      Issue No: Vol. 12, No. 1 (2023)

    • Authors: Ayja Khayrurraja, Roffi Grandiosa, Fittrie Meyllianawaty Pratiwy, Iskandar Iskandar
      Pages: 1401 - 1412
      Abstract: The purpose of this study was to determine the optimum level of addition of chitosan and probiotics in feed to increase the growth rate and daily feed consumption of giant gouramy  (Osphronemus gouramy). The method used in this research is an experimental method of completely randomized design (CRD), which consists of five treatments and three replications. The treatments used were (A) without giving chitosan and probiotics (control), (B) giving chitosan at 7.5 g/kg feed and probiotics at 10 ml/kg feed, (C) giving chitosan at 7.5 g /kg feed and probiotics at 15 ml/kg feed, (D) chitosan at 7.5 g/kg feed and probiotics at 20 ml/kg feed, (E) chitosan at 7.5 g/kg feed and probiotics of 25 ml/kg feed. The parameters measured were absolute length absolute weight, specific growth rate, feed utilization efficiency ratio (EPP), survival rate, and water quality. Data were analyzed using the Anova test at the 5% level. The results showed that the addition of different concentrations of chitosan and probiotics to commercial feeds could affect growth, and EPP but did not affect the survival rate of giant gouramy. The results obtained during the study showed that treatment C with the addition of chitosan of 7.5 g/kg of feed and probiotics of 15 ml/kg of feed resulted in the highest absolute length growth of 4.87 cm, the highest absolute weight growth of 19,35 g, the highest daily growth rate was 46,08%, the feed efficiency was 91,5% and survival rate was 97,78%. Whereas in terms of the effectiveness of treatment B with the addition of chitosan 7.5 g/kg of feed and less probiotics, namely as much as 10 ml/kg of feed, the treatment was as good as treatment C.
      PubDate: 2023-11-03
      DOI: 10.23960/aqs.v12i1.p%p
      Issue No: Vol. 12, No. 1 (2023)
  • CPUE Trend and Dominant Fishing Gear of Mackerel (Rastrelliger sp) Landed
           in Karangantu

    • Authors: Fitri Afina Radityani
      First page: 1413
      Abstract: PPN Karangantu is one of the fish landing sites in Serang City, Banten Province. One type of fish that is mostly landed in PPN Karangantu is mackerel. Several fishing gears used by Karangantu fishermen to catch mackerel are single monofilament gillnet, boat lift net, lift net, and lines. Mackerel fishing efforts in the 2017-2021 timeframe are likely to increase, but the management of mackerel fishery in Karangantu PPN has not been specifically implemented. The purpose of this study was to determine the CPUE trend for mackerel fisheries in the 2017-2021 timeframe and identify the dominant types of fishing gear in mackerel fishery activities. The data used in this study were obtained from the PPN Karangantu Statistical Report and field observations. The data which has been collected is processed and analyzed using CPUE and descriptive analysis. The results showed that the CPUE trend for mackerel in 2017-2021 tends to increase sustainably, while the dominant fishing gear used in mackerel fishing is single monofilament gillnet.
      PubDate: 2023-11-03
      DOI: 10.23960/aqs.v12i1.p%p
      Issue No: Vol. 12, No. 1 (2023)

    • Authors: Moh Muhaemin, Mohammad Fadhil Priambodo, Oktora Susanti, Eko Efendi
      Pages: 1422 - 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.
      PubDate: 2023-11-07
      DOI: 10.23960/aqs.v12i1.p%p
      Issue No: Vol. 12, No. 1 (2023)
           CRAB (Portunus pelagicus) WASTE PRODUCT, LEMI

    • Authors: Jumiati Jumiati, Yuyun Suprapti
      Pages: 1333 - 1342
      Abstract: The purpose of this study was to determine the difference in the quality of crabs from the addition of crab mustard in the manufacture of shrimp crackers, increasing the usefulness of crab mustard which are generally discarded and can be used as processed cracker products. The use of crab mustard in this study as an additional ingredient in the manufacture of shrimp crackers. Quality parameters in the form of nutritional composition include: protein, fat, carbohydrate, water and ash, organoleptic test (texture, taste, smell and color) and Total Plate Count (TPC). Experimental method, analysis of data by F test on product quality with 5 treatment composition comparisons: flour, mustard and shrimp meat, namely: L (50%: 50%:0%); A (50% : 37.5% : 12.5%); B (50% : 25% : 25%); C (50% : 12.5% : 37.5%); U (50% : 0% : 50%), each treatment had 3 replications. The results of proximate analysis (protein, fat, carbohydrates, water and ash), organoleptic test showed a very significant difference (P<0.01) between treatments, but for TPC there was no significant difference (P>0.05). The best nutritional composition in treatment C. The best organoleptic test results in treatment C. The best TPC value in treatment A.
      PubDate: 2023-04-29
      DOI: 10.23960/aqs.v11i2.p1333 - 1342
      Issue No: Vol. 11, No. 2 (2023)

    • Authors: Resky Dwi Angraeni, Naslina Alimina, Muslim Tadjuddah
      Pages: 1343 - 1354
      Abstract: Kolono Bay is one of the waters in South Konawe Regency which has a large potential for fishery resources with an area of ± 9,400 hectares of water. One of the leading commodities in the waters of Kolono Bay is anchovy (Stolephorus spp). This study aims to determine the characteristics of oceanography, namely the parameters of pH, Salinity, DO (Dissolved Oxygen), current velocity, and depth of anchovy fishing area in the waters of Kolono Bay. This study uses a direct measurement method in the field. Data collection and analysis were carried out from January to March 2019 with ten research stations. The results showed that in January, February, and March in the waters of Kolono Bay, the water temperature ranged from 28.47-31.67°C. The current velocity has a range between 0.092-0.508 m/s. The value of water depth has an average value of 8.0-17 m, the average value of dissolved oxygen ranges from 4.91-7.07 mg/L, salinity with an average value of each station ranging from 32.90-35.63‰ and The degree of acidity of the water (pH) has an average of 8.00. The suggestion from this study is the need for further research on the study of status of anchovy utilization in Kolono Bay so that sustainable and sustainable management can be carried out.
      PubDate: 2023-04-29
      DOI: 10.23960/aqs.v11i2.p1343 - 1354
      Issue No: Vol. 11, No. 2 (2023)
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