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Acta Aquatica : Aquatic Sciences Journal
Number of Followers: 1

This is an Open Access Journal

Open Access journal
ISSN (Print) 2406-9825 - ISSN (Online) 2614-3178
Published by Universitas Malikussaleh

[3 journals]

Phytoplankton diversity as a bioindicator in river waters
- Authors: Rinaldi Rinaldi, Asih Makarti Muktitama, Anis Nugrahawati
  Pages: 94 - 97
  Abstract: Water quality can be seen from the diversity of plankton in the waters. Plakton can also be considered as a bioindicator to determine whether the waters are polluted or not. This research was conducted by taking water samples in the waters of the Krueng Pase River and analyzing them in the laboratory. The results of the analysis show that the most common phytoplankton found the type Naviculla sp reached 10%. This type of phytoplankton belongs to the Bacillariophyceae class. Phytoplankton from this group can be a bioindicator of environmental pollution in water.Keywords: Bioindicator; Fitoplankton; Pollutan
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.11300
  Issue No: Vol. 11, No. 2 (2024)
Utilization of Indigofera zollingeriana leaves meal in feed formulation to
color brightness and growth in koi fish (Cyprinus carpio)
- Authors: Retno Cahya Mukti, Yulisman Yulisman, Irmawati Irmawati, Muhamad Sadina Putra
  Pages: 98 - 103
  Abstract: This study aims to determine the effect of the addition of Indigofera zollingeriana in feed formulations with different doses on the color brightness of koi fish. The research design was Completely Randomized Design (CRD) with five treatments and three replications. Treatment P0 was control (without the use of Indigofera leaf meal), P1 was the addition of 5% indigofera meal, P2 was the addition of 10% indigofera meal, P3 was the addition of 15% indigofera meal, and P4 was the addition of 20% indigofera meal. Fingerlings measuring 6 ± 1 cm with a stocking density of 1 fish for 2 L were reared for 30 days in this study. The results showed that P2 with a percentage of 10% Indigofera zollingeriana meal was the best treatment for the brightness of koi fish color (27.23). Still, they had no significant effect on the growth of absolute length (1.04 cm) and absolute weight (1.05 g), feed efficiency (23.08%), and survival rate (100%). The water quality obtained during maintenance was temperature 26-27oC, pH 6.1-7.2, dissolved oxygen 5.2-6.3 mg/L, and ammonia 0.02-0.036 mg/L.Keywords: Fish Color Brightness; Indigofera zollingeriana; Koi Fish
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.13057
  Issue No: Vol. 11, No. 2 (2024)
Analysis of the relationship between primary productivity, phytoplankton
abundance and nutrients in Cengklik Reservoir, Boyolali
- Authors: Puspa Rose Rezkyta Winneke Pradana, Arif Rahman, Churun Ain
  Pages: 104 - 109
  Abstract: Cengklik Reservoir is a reservoir that has many benefits for the surrounding community such as irrigation and aquaculture, namely Floating Net Cages. FNC in these waters can have an impact on the remaining feed produced in cultivation. The rest of the feed can cause increased nutrient concentrations and eutrophication in the waters. These impacts can affect water quality conditions, phytoplankton abundance and primary productivity. The purpose of this study was to determine the primary productivity, abundance of phytoplankton, nitrate (NO3) and orthophosphate (PO4) in Cengklik Reservoir, Boyolali. The study was conducted in March 2023. The sampling point determination method uses Stratified Random Sampling with four stations in two repeats. Data processing using simple and multiple linear regression analysis with Jamovi application. The results obtained gross primary productivity value is 62.50 – 156.25 mgC/m3/hour while net primary productivity is 31.25 – 93.75 mgC/m3/hour. The abundance of phytoplankton results the most in the Cyanophyceae class with a percentage of 50.72% - 65.06%. The relationship between phytoplankton abundance and gross primary productivity is obtained R2 = 0.142 while net primary productivity R2 = 0.608 which means that the relationship of phytoplankton abundance affects the production of net primary productivity in waters. The relationship between nitrate and phosphate analysis with phytoplankton abundance in waters R2 = 0.311 which means that nitrate and orthophosphate have a low influence on phytoplankton abundance. The abundance of phytoplankton in waters can be influenced by other factors.
  Keywords: Cyanophyceae; Nitrate; Orthofosfat; Phytoplankton
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.12597
  Issue No: Vol. 11, No. 2 (2024)
Population characteristic of torpedo scad (Megalaspis cordyla Linnaeus,
1758) in the Lampung Bay: Size structure, growth type, and condition
factor
- Authors: David Julian, Rachmad Caesario, Nidya Kartini, Indra Gumay Yudha, Putu Cinthia Delis, Qadar Hasani, Herman Yulianto
  Pages: 110 - 115
  Abstract: Megalaspis cordyla, locally known as ikan bekre, stands as a crucial economic species commonly consumed by the people of Lampung. The escalating demand for this fish has significant implications for increased fishing activities, potentially impacting its population. This research aimed to explore the biological characteristics of M. cordyla landed at the Lempasing Fishing Port, Bandar Lampung, providing fundamental insights for fisheries resource management in the waters of Lampung Bay. Using a quantitative descriptive method, the sampled fish has been analyzed to get size structure, growth type, and fish condition factors based on length and weight data collected from M. cordyla landed weekly. Between April and June 2022, a total of 300 samples were collected, with length ranging from 230 to 430 mm TL, with the largest count (77 individuals) in the 314-334 mm interval. M. cordyla has an allometric negative growth pattern in Lampung Bay, with a growth coefficient (b) value of 2.47. Fish condition factor values ranged from 0.71 to 1.33, with June having the highest average value of 1.03. This information contributes greatly to a better understanding and long-term planning for the management of this fish population.Keywords: Allometric; Condition Factor; Length-Weight Relationship; Pelagic Fish; Aquatic Resources Management
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.14735
  Issue No: Vol. 11, No. 2 (2024)
Growth and survival assessment from African lungfish (Clarias gariepinus)
and its hybrid with two species of heterobranchus
- Authors: Ikililu Abdulraheem, Musa Idi-Ogede Abubakar
  Pages: 116 - 120
  Abstract: Obtaining good quality and quantity of fish seeds for increasing fish production is a major quest by fish farmers. This study examined the growth responses and survival of Clarias gariepinus and two species of heterobranchus. One thousand five hundred (1500) fry (28-day after hatched) were randomly selected from each of the three crosses of Clarias gariepinus (T1), C. gariepinus x Heterobranchus longifilis (T2) and C. gariepinus x Heterobranchus bidorsalis (T3) broodstocks. They were stocked separately in triplicate at a stocking rate of 500 fish per replicate and reared for 90 days. The data were analysed for significant differences (P<0.05) by Analysis of Variance (ANOVA). There was no significant difference in the growth parameters but fish in T3 had the highest value of mean weight gain while T1 had the least. No significant difference (p>0.05) was observed in the body weight gains from day 40 to day 90 except at day 70 where T3 had the highest weight gain (18.97 g) which was significantly different (p<0.05) to the value recorded in T1 (18.20 g) but not significantly different (p>0.05) to the value recorded in T3 (18.97 g). The results of length increment showed that the growth pattern from day 0 to day 80 were similar. A little difference was observed at day 90 with T3 >T2>T1. The fish in T1 (Clarias gariepinus) had the highest significant percentage survival (89.60%). The results of water quality parameters showed that the mean temperature was 28oC, pH 6.8, dissolved oxygen 5.6 mg/l and turbidity 5.45 NYU. The culture of C. gariepinus by farmers will improve their output and consequentially increase in profit.Keywords: aquaculture; fish breeding; hybrids; weight gain
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.10059
  Issue No: Vol. 11, No. 2 (2024)
Efficiency analysis of catfish (Pangasius sp) marketing channels Balai
Benih Ikan (BBI) Terantang
- Authors: Adha Susanto, Erman Satriansah, Kiagus Muhammad Zain Basriwijaya
  Pages: 121 - 125
  Abstract: This study aims to analyze farmer's share, marketing margins, profit ratio, and marketing channel efficiency of catifish (Pangasius sp.) BBI Terantang in Sukamara and Balairiam District. The research method is a survey method by conducting direct observations and interviews. The data used were primary data and secondary data collected during September 2022 to June 2023. The data obtained was then analyzed using qualitative and quantitative descriptive analysis. The results showed that there were three types of marketing channels for BBI Terantang catfish, namely I: BBI Terantang and consumers, II: BBI Terantang, retailers, and consumers, and III: BBI Terantang, collectors, retailers, and consumers. Marketing channel I has a farmer's share value of 100%. The highest marketing margin occurred in marketing channel III with a total margin of Rp. 7,500.00-/kg. The profit ratio in marketing channels II and III benefits retailers and collectors with ratios of 7 and 3.3. As for the marketing efficiency of fresh catfish, all marketing channels are effective.Keywords: Catfish; Farmer's Share; Marketing Efficiency; Marketing Margin; Profit Ratio.
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.11854
  Issue No: Vol. 11, No. 2 (2024)
Acetabularia caliculus (J.V.Lamouroux, Quoi & Gaimard, 1824), in the Gulf
of Antalya: A second discovery
- Authors: Hatice Üstüner, Mehmet Gökoğlu
  Pages: 126 - 128
  Abstract: During scuba-diving activities on October 26, 2021, at Konyaalti Beach (36o 52' 58'' N 30o 41' 06'' E) of the Gulf of Antalya, another Acetabularia species was discovered after the vegetation of Acetabularia acetabulum. According to the species guide, this algae species was identified as Acetabularia caliculus (JVLamour, Quoy & Gaimard, 1824). This species was first reported in the Gulf of Antalya in 2018. This study presents a second discovery of the species in the Gulf of Antalya.Keywords: Acetabularia caliculus; Gulf of Antalya; Second Report
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.5637
  Issue No: Vol. 11, No. 2 (2024)
Size distribution and growth parameters of blue swimming crab (Portunus
pelagicus, Linnaeus 1758) in Awur Bay, Jepara
- Authors: Rizqina Nafa Nur Azzahra, Suradi Wijaya Saputra, Siti Rudiyanti
  Pages: 129 - 134
  Abstract: Blue swimming crab (Portunus pelagicus) is a fishery commodity that has important economic value. One of the catch landings in Teluk Awur, Jepara is blue swimming crab. Intensive crab catching carried out with small sizes has an effect on decreasing crab stocks in the waters. This study aims to determine the size distribution, the relationship between carapace width and weight, growth parameters and recruitment patterns. The research was conducted in May, June, July and August 2022 in the waters of Teluk Awur, Jepara. Sampling using systematic sampling method. The data collected is carapace width (mm) and crab weight (grams). Data analysis was performed using FiSAT II software. The results of the analysis of the relationship between carapace width and weight showed that the growth of the male crab was positive allometric and the growth of the female crab was isometric, with the equation of the male crab W = 0.0000214cW3.251 and the female crab W = 0.0000232cW3.220. The growth parameters obtained by the equation of the male and female crabs were cWt = 158,55(1- e(-1,2(t+0,083))], and cWt = 158.55(1 – e(-0.67(t+0.152) ))). The peak of male crab recruitment was in October at 22,71%, while the female crab was in May at 13,52%, indicating that in that month new crab individuals were added. Based on these results, the stock of crab resources in Jepara's Awur Bay must always be considered and always support the recruitment process of crab. Beside that, the goverment can enforce management of crab fishing.Keywords: Allometric; Carapace Width; Crab; Recruitment
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.11395
  Issue No: Vol. 11, No. 2 (2024)
Supplementation of lysine and probiotics in artificial feed based on local
raw materials on feed quality and feed conversion ratio of bileh fish
(Rasbora sp.)
- Authors: Dini Islama, Sufal Diansyah, Khairul Samuki, Bastian Vito, Citra Dina Febrina
  Pages: 135 - 142
  Abstract: AbstractThis study aims to determine the effect of lysine and probiotic supplementation in artificial feed based on local raw materials on feed quality and feed conversion ratio of bileh fish (Rasbora sp.). This research was carried out from August to September 2023 at the Hatchery and Laboratory of Systems and Technology and the Aquaculture Environment, Faculty of Fisheries and Marine Sciences, Teuku Umar University. In this study, bileh fish measuring 2 - 2.5 cm long were used as test fish. The experimental design used was a non-factorial Completely Randomized Design (CRD) with 4 treatments and 3 replications. The level of treatment applied in feed formulation is feed based on local raw materials as a control (P0), feed based on local raw materials with 1.2% lysine supplementation (P1), 1.4% (P2), 1.6% (P3), 1.8 % (P4) and probiotics 15 ml/kg feed. Feed is given at satiation 3 times a day. The test parameters observed were the quality of the feed produced, daily growth rate and feed conversion ratio of bileh fish (Rasbora sp.). The research results showed that lysine and probiotic supplementation in artificial feed based on local raw materials gave the same response to the quality of the feed produced, but had a significant effect on the daily growth rate and feed conversion ratio of bileh fish. The best daily growth rate and feed conversion ratio were obtained in the P3 treatment.Keywords: Artificial feed based on local raw materials; feed quality; feed conversion ratio; Rasbora sp.
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.13525
  Issue No: Vol. 11, No. 2 (2024)
Growth performance of eel fish (Anguilla bicolor) which are maintained in
containers of different colors
- Authors: Hany Handajani, David Hermawan, Andrea Sherina Jasmine
  Pages: 143 - 148
  Abstract: Performance of Eel (Anguilla bicolor) maintened in containers of different colors. Growth is the main driver in increasing the profitability of aquaculture. In addition to maintenance management the color of the container is also a factor supporting the growth of eels. This study aims to determine the effect of the color of different rearing containers on the growth and appetite response of eel. The test fish used were elver stage eels with an average weight (129 ±131g). The method used is an experiment with two treatments they are grey and green. The test fish were placed in a container measuring 19x4 m2 and a water level of 1m with a stocking density of 1100 individuals each, 30 days of rearing. The variables observed were growth performance including SR (Survival Rate), ADG (Average Daily Growth), FCR (Food Conversion Ratio), SGR (Specific Growth Rate). The results obtained indicated that there was a significant difference in the average growth of fish reared in grey and green containers. Grey container treatment was proven to get higher yields with average final weight values (192.4 ± 4.5 g), FCR (1.01 ± 0.02), ADG (2.01g/day ± 0.06), SGR (1 .25%BW/day±0.02). Based on the results of the study it can be concluded that there is a significant difference in the growth of eels reared in ash and green containers. The color of the ash container proved to be better in supporting growth performance.Keywords: Elver; Green; Grey; Nocturnal
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.15205
  Issue No: Vol. 11, No. 2 (2024)
The effect of the ratio of male to female Broodstock on the production of
tilapia (Oreochromis niloticus) Seed
- Authors: Azman Herman, Andi Adam Malik, Sahabuddin Sahabuddin, Yushra Yushra, Rismawaty Rusdi
  Pages: 149 - 153
  Abstract: This research was conducted from November to December 2023 at the Production Centre of Pangkajene Fish Seed Institute, Sidenreng Rappang Regency, South Sulawesi Province. The objective of this study was to determine the effect of the ratio of male and female broodstock on tilapia seed production, and to determine the ratio of male and female broodstock that produce the most seed production. The design used was a completely randomised design with 4 treatments and 3 replications. The data obtained were presented in the form of graphs and tables. The effect of treatment was analysed using analysis of variance (ANOVA) followed by Tukey's test. The results of the analysis showed that the ratio of male to female broodstock had a significant effect on tilapia fry production (P < 0.05) Sig = 0.034. The highest seed production was found in treatment C (1 male: 4 females) with an average production of 71,000 seeds. Treatment B (1 male: 3 females), 51,000 seeds, treatment D (1 male: 5 females), 34,000 seeds and treatment A (1 male: 1 female) with an average production of 21,000 seeds. It can be concluded that the ratio of male to female broodstock has a significant effect on the production of nila fish fry (Oreochromis niloticus). The highest fry production was obtained in the ratio 1 male; 4 females.Keywords: Broodstock; Production; Ratio; Seed; Tilapia
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.14980
  Issue No: Vol. 11, No. 2 (2024)
Growth and biomass of Wolffia arrhiza with different sources of organic
fertilizer
- Authors: Bahagia Bahagia, Erlangga Erlangga, Rachmawati Rusydi, Eva Ayuzar, Munawwar Khalil, Prama Hartami
  Pages: 154 - 159
  Abstract: Wolffia arrhiza has a growth rate and biomass as well as a good nutritional content for the growth of cultivated fish, especially herbivorous fish. Due to the high protein content (up to 45% of the dry weight), Wolffia is an excellent plant for the production of various biologically active substances, especially proteins. These plants can double every 1-6 days, similar to algae or mushrooms, and the number of leaves doubles every 2-3 days. This study aims to determine the effect of different fertilizer sources on doubling time, relative growth rate, population density and biomass of Wolffia arrhiza and water quality. The method used in this research is experimental. The research design used a completely randomized design (CRD) consisting of 4 treatments and 3 replications. The treatments were as follows: treatment A: chicken manure, B: cow manure, C: buffalo manure and D: goat manure with each dose of 200 grams. Parameters observed included doubling time, relative growth rate, population density, biomass and water quality parameters. The results showed that treatment B (cow manure) gave the highest value for doubling time, 1.59 days, relative growth rate 0.392 g/day, population density 209.75 ind/cm2, biomass 94.97.
  Keyword: Biomass; Fertilizer; Growth; Wolffia
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.12199
  Issue No: Vol. 11, No. 2 (2024)
Growth optimalization of bileh fish seeds (Rasbora sp.) through different
feeding frequencies
- Authors: Nurfaizah Nurfaizah, Dini Islama, Fitria Rahmayanti, Citra Dina Febrina
  Pages: 160 - 165
  Abstract: Bileh fish is a type of freshwater fish that is sought after by the people of Aceh because it has a delicious taste and is quite tasty. Bileh fish is a local fish species that has the potential to be developed as an aquaculture commodity and its population must be preserved from overfishing. The aim of this research was to determine the effect of different feeding frequencies on the growth of bileh fish fry (Rasbora sp.). This research used a non-factorial completely randomized design (CRD) method consisting of 4 treatments and 3 replications each, namely the frequency of feeding 1 time/day (P1), feeding 2 times/day (P2), feeding 3 times/day day (P3) and feeding 4 times/day (P4). The feed given is commercial feed PF 500 with 39% protein. The parameters observed included survival rate, length growth, weight growth, daily growth rate, feed efficiency and water quality. The results showed that different feeding frequencies had no significant effect on survival rate, absolute length and daily growth rate of bileh fish (Rasbora sp.). However, it has a real effect on weight growth and feed efficiency. The best feeding frequency to optimize the weight growth of bileh fish (Rasbora sp.) is in the P3 treatment with a frequency of 3 times/day.Keywords: Feed Efficiency; Feeding Frequency; Growth; Rasbora
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.15187
  Issue No: Vol. 11, No. 2 (2024)
Identification of microplastic content in milkfish ponds in Lontar
Village, Serang Regency
- Authors: Yonita Nabila Yogi, Achmad Noerkhaerin Putra, Desy Aryani
  Pages: 166 - 172
  Abstract: Microplastics measuring < 5 mm can easily enter the fish's body through the respiratory system and digestive system. The aim of this research is to calculate the abundance of microplastics and determine the types contained in the bodies of milkfish, water and sediment in the Lontar Village Pond, Serang Regency. There are 6 stations, 4 fish samples were taken from each station, water samples were taken using a plankton net and sediment samples were taken using individual pipes at each station. The number of fish samples was 24 fish, meat, intestine, stomachs and gills were taken. Fish organs were destroyed using 10% KOH. Samples were incubated for 24 hours until the organic material was destroyed. Then filtered using Whattman No 42, and dried using an oven at 60ºC for 1 hour. Likewise, filtering of water and sediment samples is carried out. The types of microplastics found were fragments, fibers and films. The highest abundance was in the gills and intestines with an abundance of 11 per individual. The highest abundance of microplastics in the water in Lontar Village ponds is the fragment type with a total of 5 per/20 mL at station 3 and the film type with a total of 5 per/20 mL at station 6 and in the milkfish pond sediments of Lontar Village the highest abundance of microplastics is 1 per/25 gr. The types of polymers found in the digestive tract of milkfish are Polycarbonate (PC), Acrylonitrile butadiene styrene (ABS), Latex, Polystyrene (PS), Nylon, and Polytetrafluoroethylene (PTFE).Keywords: Aquaculture; Lontar; Microplastics; Milkfish
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.15369
  Issue No: Vol. 11, No. 2 (2024)
Economic valuation of mangrove ecosystem in Tana Tidung Regency
- Authors: Mazlan Mazlan, Fredinan Yulianda, Gatot Yulianto, Dori Rachmawani
  Pages: 173 - 178
  Abstract: Mangrove ecosystems are found in the area where land meets the sea. Potential of mangrove ecosystem are abundant because of their significant ecological and economic role, mangroves are known as multifunctional ecosystems. Ponds and the associated biota are two examples of the direct and indirect benefits of mangrove ecosystems. The research aim is to calculate the potential benefits of mangrove ecosystems in Tanah Tidung Regency. The method used for calculation of the value of resource benefits using the total economic value approach. The results showed that the Potential Use Value of mangrove ecosystems in Tana Tidung Regency reached Rp 305.529.644.089 per/year. So, it can be ascertained that mangroves have great potential in improving the welfare of people who can utilize them.Keywords: Economic Value; Mangrove; Tana Tidung
  PubDate: 2024-08-04
  DOI: 10.29103/aa.v11i2.15707
  Issue No: Vol. 11, No. 2 (2024)

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