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Current Trends in Aquatic Science
Published by Universitas Udayana
ISSN : 26217368     EISSN : 26217473     DOI : -
Core Subject : Education,
Other
Arjuna Subject : -
Articles 10 Documents
 1 
Search results for , issue "Vol 6 No 1 (2023)" : 10 Documents clear
Analisis Komparatif Hasil Tangkapan Ikan Nilem (Osteochilus hasselti) di Danau Buyan dan Danau Tamblingan, Bali Irvan Ryan Effendi; I Wayan Restu; I Ketut Wija Negara
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Potential fish resources found in Lake Buyan and Lake Tamblingan have a similar variety of species and one of them is bony lip barb fish. This study aims to determine the percentage of the number of catches, differences in total length and weight characteristics, sex ratio, gonad maturity level (GML), the relationship between length and weight, and condition factors on bony lip barb fish (Osteochilus hasselti) caught in Lake Buyan and Tamblingan Lake. The total length of bony lip barb fish from Lake Buyan ranged from 161.00 – 224.00 mm and Lake Tamblingan ranged from 142.50– 220.10 mm. The weight of bony lip barb fish from Lake Buyan ranged from 49.20 – 121.25 grams and from Lake Tamblingan it ranged from 48.21 – 121.07 grams. Male bony lip barb fish dominating in GML III. While in female bony lip barb fish, dominating GML II. In Lake Buyan, the value of b as a result of the relationship between length and weight of bony lip barb fish is 2.76. At Tamblingan Lake, the numbers are not much different from the b value of 2.53. The relationship between length and weight of bony lip barb fish is negative alometric. The condition factor for bony lip barb fish in Buyan Lake obtained an average value of 1.01. In contrast, at Tamblingan Lake the condition factor value for bony lip barb fish caught had an average value of 1.01. Condition factors that exist in Lake Buyan and Lake Tamblingan are good water conditions with thin fish conditions
Pengaruh Penambahan Senyawa Thiophenone terhadap Kelulushidupan dan Pertumbuhan Larva udang galah yang Diujitantang dengan Bakteri Vibrio harveyi Maulana Ilham Pratama; Pande Gde Sasmita Julyantoro; I Ketut Wija Negara
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Giant prawns are one of the freshwater aquaculture commodities with high economic value. The high demand for giant prawns is constrained by the low quality of larvae, which affect the prawn growth to reach consumption sizes. Conventional efforts have been made to treat the bacterial diseases in the prawn cultivation using antibiotics. However, it has risk of causing pathogenic bacteria to become resistant to antibiotics. Such issue can be overcome by using inhibiting quorum sensing from pathogenic bacteria, especially thiophenone compounds. This study aimed to determine the effect of adding thiophenone compounds on the survival and growth of giant prawn larvae from Center for Giant Prawns (BBUG) Klungkung, Bali tested with Vibrio harveyi. A completely randomized design of 4 treatments (A: control, B: Larvae and Vibrio harveyi (105 CFU/ml), C: Larvae and thiophenone (10µM), D: Larvae, thiophenone (10µM) and Vibrio harveyi (105 CFU/ml)) and 3 repetitions was done in laboratory. A total of 12 experimental units containing 20 larvae with 0.2liter seawater media at 28?C. The results showed that the survival rate of giant prawn larvae was significantly higher when the larvae challenged with Vibrio harveyi compared to un challenged larvae. Furthermore, there was no difference in prawn larvae growth between the treatments indicated by similar value of Larvae Stage Index (LSI). This study has demonstrated the benefit of employing thiophenone compounds to improve the quality of giant prawn larvae. Further study in challenging the thiophenone compounds with other bacteria that might threat the giant prawn growth is still needed.
Pengaruh Penambahan Saccharomyces cerevisiae pada Pakan terhadap Pertumbuhan Ikan Kakap Putih (Lates calcarifer) I Made Budiarsana; Pande Gde Sasmita Julyantoro; Alfi Hermawati Waskita Sari; I Gusti Ngurah Permana
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

White snapper (Lates calcarifer) is one of the marine aquaculture commodities in Indonesia, which has high economic value and fast growth. This study aims to investigate the influence of Saccharomyces cerevisiae addition into feed on the growth of white snapper (Lates calcarifer). The growth observed was the absolute length growth, the absolute weight, feed conversion ratio, survival, and specific growth rate. This research used experimental methods with complete randomized design non-factorials. White snapper (size 2-3 cm) was maintained for 30 days at a stocking density of 1500 Ind/m3. There were 2 treatments conducted, K treatment (control) and S treatment (pellet + Saccharomyces cerevisiae 100 ml/kg feed). Data analysis was done using t-test. The result showed that the addition of Saccharomyces cerevisiae resulted in decreasing of feed conversion ratio. The absolute length and weight, specific growth rate and survival were higher than the treatment without the addition of Saccharomyces cerevisiae, but not statistically different (p>0,05). The S treatment resulted in higher value of the feed conversion ratio (2,28), growth (7,21 cm/month), absolute weight growth (13,75 g/ month), the specific growth rate (11,92 % /day) and survival of (84,07 % /month). Water quality values such as temperature ranged from 29-31,6 OC salinity 27-32 ppt, pH 7,11-7,57, and dissolved oxygen 1,74-5,64 ppm.
Fluktuasi Nilai Fosfat dan Nitrat pada Pembesaran Ikan Nila dengan Sistem Aquaponik yang Diberi Tanaman Mint (Mentha arvensis) Made Sandi Kurniawan; I Wayan Arthana; Gde Raka Angga Kartika
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Nitrate and phosphate enrichment in Tilapia culture can be minimized using the concept of aquaponics by growing aquatic plants around the cultivation area. The purpose of this study was to determine fluctuations in phosphate and nitrate values ??in tilapia rearing using aquaponics technology using mint (M. arvensis) plants. B, and the three plants sink beyond the roots to the stem (C). The method that use in research is eksperiment with Random Project Complete (RAL). After a month, the highest average growth rate of mint (M arvensis) occurred in treatment A and the lowest in treatment C. The highest specific growth was in treatment A and the lowest was in treatment B. The highest survival rate was in treatment C and the lowest was in treatment B. The best phosphate absorption was found in treatment B with a decrease of 0,12 mg/L, and the lowest was in treatment C with a value of 0,08 mg/L. The best nitrate absorption was found in treatment A with a decrease of 1,38 mg/L, and the lowest in treatment C with an increase of 0,69 mg/L. The results of the One-Way ANOVA statistical test with Duncan's follow-up test showed significantly different treatments for phosphate and nitrate measurements.
Pola Pertumbuhan Mangrove Jenis (Bruguiera gymnorrhiza) dan (Ceriops tagal) dengan Metode Pembibitan menggunakan Substrat yang Berbeda di Pulau Serangan, Denpasar, Bali Alvin Agus Prambudy; I Wayan Restu; Ni Putu Putri Wijayanti
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

This research was conducted to determine the growth pattern and percentage of survival as well as the growth rate of mangrove species Bruguiera gymnorrhiza and Ceriops tagal per unit time using different types of substrates This study used a completely randomized design (CRD) with five treatments) by 5 technique for example, Handling A with 100% sand substact, Handling B with 100% soil substract, Handling C with 50% soil and sand substract, Handling D with 30% sand and 70% soil substract, and Handling E with 70% sand and 30% soil substract, and 10 repetitions. Measurements were carried out every week starting after 1 week of planting for 2 months. Parameters observed were plant height, plant diameter, number of leaves, mangrove survival and mangrove growth rate. Quantitative data were analyzed statistically by ANOVA. The results of Bruguiera gymnorrhiza species has height between 8,87-27,88 cm, growth rate range 1,11-1,17 cm/week, diameter of growth 0,07-0,14 cm, and number of leaves as much 3-5 sheet, while mangrove results of Ceriops tagal has height between 0,76-1,42 cm, growth rate range 0,10-0,18 cm/week, diameter of growth 0,02-0,08 cm, and number of leaves as much 1-2 sheet for 8 weeks. The results showed that mangrove nurseries using a combination of substrates did not give a significant difference to the growth pattern, survival percentage and mangrove growth rate.
Kondisi Sosial Ekonomi dan Nilai Tukar Nelayan (NTN) Slerek di Pelabuhan Perikanan Nusantara (PPN) Pengambengan, Bali Serly Ayu Ulandari; I Wayan Restu; I Ketut Wija Negara; Bagus Sudananjaya; Made Ageng Astika
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aims to determine the socio-economic conditions and welfare level of slerek fishermen based on the Fisherman's Exchange Rate (NTN). Primary data was collected through interviews, observations and questionnaires with the criteria of fishermen using purposive sampling, where the number of samples was 110 respondents based on the slovin formula. The results of the study found 5 positions of slerek fishermen, namely 4 as stage mans, 10 as helmsmans, 6 as mechanics, 3 as tinsmiths and 87 as crews. Social conditions show the productive age range of fishermen between 19-59 years by 93.4%, with a relatively low level of education, namely elementary school graduates by 40.9%, then the highest number of family dependents is to bear 3 people by 36.3%. For access to health, 66.3% of respondents mostly used puskesmas as a place for treatment, by 77.2% of respondents having BPJS cards, then 91.8% had no history of illness and 94.5% of fishing families rarely got sick. The economic condition based on the highest income level of fishermen is in the position of a stage mans because it has a profit-sharing system of 3-4 times. The welfare level of the 5 positions of slerek fishermen based on NTN in April - May 2022 shows NTN ? 1, which means that slerek fishermen are declared prosperous. While the INTN results show a value of 100, which means that there is no development in the NTN value
Hubungan Postur Ikan dengan Jumlah Endoparasit pada Ikan Tongkol (Auxis rochei) yang Didaratkan di Pantai Kedonganan, Bali Annisa Millenia Putri; Pande Gde Sasmita Julyantoro; Dewa Ayu Angga Pebriani
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aims to determine the various types of parasites that infect tuna, their abundance, prevalence, level of parasite intensity and the effect of fish length on the number of parasitic infections. Fish samples were obtained from Kedonganan Beach, Bali from November-December 2021. This study used a descriptive method and data collection using simple random sampling. The total samples examined were 35 fish. The endoparasites found in the internal organs of fish which include the intestines, liver, and gonads consist of 3 different genera, namely: Rhadinorhynchus sp., Anisakis sp., and Lecithocladium sp. The highest abundance was found in the genus Rhadinorhynchus sp., the highest prevalence was found in the genus Rhadinorhynchus sp., and the highest intensity level was found in the genus Lecithocladium sp. The relationship between length and number of parasites was classified as "very weak" because the correlation between the two relationships ranged from 0.00-0.199. So, it can be concluded from the research that has been done related to the relationship between fish posture and the number of endoparasites that infect the tuna (Auxis rochei) which was landed on the beach of Kedonganan, Bali. There is no relationship between fish body posture and the number of endoparasite infections or can be classified into the category of a "very weak" relationship.
Analisis Laju Pertumbuhan Karang Acropora sp. Hasil Transplantasi di Pantai Geger Bunga Divia Arimbi; I Wayan Arthana; Ni Made Ernawati
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Coral transplantation is one of the efforts to rehabilitate a damaged coral reefs. The successful growth of transplantation is influenced by water quality. This study aims to determine the relation between water quality parameters and the growth rates of Acropora sp. transplantation in Geger Beach. This research was conducted for 3 months during February until Aprils 2022, carried out in every 2 weeks at difference point. The observations was measuring length, width, high, and the increased of total corals fragment. The results showed the averages of length growth rate is 1.39 mm/2 weeks on each points. While the high growth rate on point 1 and 2 had a 0.14 mm/2 weeks different high, and each point had a values of 0.61 mm/2 weeks and 0.76 mm/2 weeks. On the width growth rate, each of point had a values of 2.06 mm/2 weeks and 1.50 mm/2 weeks, with 0.56 mm/2 weeks difference. The average of increased total corals fragment has the same growth, with 2 fragment at each point. The quality of waters in Geger Beach supported the growth of coral transplantation with temperatures ranging from 29.50-29.60 °C, brightness of 100%, depth of 0.97-1.1 m, currents of 0.16-0.18 m/s, salinity of 33.33-33.16‰, pH of 7.80-7.87, and DO of 6.27-6.29 mg/l. The results of Pearson’s test showed that waters parameters have correlations and significant relationship with the growth rates of Acropora sp., with all the values of signification is more than 0.05.
Pengaruh Pemberian Pakan Pelet dan Artemia sp. terhadap Kualitas Warna Ikan Badut (Amphiprion ocellaris) Rai Ayu Ratri Chandra Pandunita; Pande Gde Sasmita Julyantoro; Ni Putu Putri Wijayanti
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aims to determine the effect of different feeding on the color quality and growth of clown fish. The feed used in the form of pellets nd Artemia sp. with three treatments and three repetitions. The treatments used were pellet feed (treatment A), Artemia sp feed. (treatment B), and the combination feed of pellet feed and Artemia sp. (treatment C). The research method used is experimental method using Completely Randomized Design (CRD). This research was conducted at PT Agung Aquatic Marine for 1 month October until November. This study used 18 clown fish fed 3 times a day with a dose of 1.5 g of Fengli pellets and 1.5 ml of Artemia sp. for one administration. The parameters measured in this study was color quality parameters. Parameter measurements were carried out once a week. The media used was a aquarium with a volume of 2500 ml with a size of 40 × 30 cm. Color quality parameters are measured with a color chart paper base called M-TCF and then ranking according to the numbers on the paper. The results of this study showed that the quality of the body color of clown fish fed pellet feed, Artemia sp. feed, and combination feed faded. Based on the results of the research that was tested by ANOVA analysis, it can be concluded that this different feeding had no significant effect (P>0.05) on the color quality of clown fish.
Analisis Laju Pertumbuhan Karang Acropora sp. Pada Transplantasi Di Pantai Pandawa dan Pulau Serangan, Bali Diah Eka Pratiwi; Ni Luh Watiniasih Watiniasih; Made Ayu Pratiwi Ayu Pratiwi
Current Trends in Aquatic Science Vol 6 No 1 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aims to determine the growth rate of Acropora corals with the relationship of water parameters at Pandawa Beach and Serangan Island. Coral growth rate in this study was measured by the increase in coral width, fragment width, height, and total number of coral fragments. The results showed that the growth of Acropora sp. corals in Serangan Island experienced a faster increase with Pandawa Beach. Based on the correlation results that the water quality at Pandawa Beach and Serangan Island has a correlation relationship to the growth rate of Acropora sp. corals. water quality parameters at Pandawa Beach and Serangan Island are in accordance with the quality standards of seawater for marine biota. The water quality parameters of Pandawa Beach and Serangan Island are in accordance with the quality standards set by the Decree of the Minister of Environment No. 51 of 2004 concerning Seawater Quality Standards for marine biota. Based on the results of water quality research for 3 repetitions and taken every 2 weeks, the characteristics of water quality values at Pandawa Beach are temperature values of 26.2 - 28.5, brightness of 100%, depth of 0.8-1.5m, salinity of 32-34‰, current speed of 0.1-0.2m/s, pH of 7.7-7.9, Do of 6-7.6. The characteristic values of water quality in Serangan Island are temperature of 27.7-30.1, brightness of 50-75%, depth of 2.4-2.8m, salinity of 31-33‰, current speed of 0.2-0.3m/s, pH of 7.7-7.9, Do of 4.6-7.6.

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