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Acta Aquatica: Aquatic Sciences Journal
Published by Universitas Malikussaleh
ISSN : 24069825     EISSN : 26143178     DOI : -
Core Subject : Science, Education,
Materials Science & Nanotechnology Other
Acta Aquatica: Aquatic Sciences Journal is a scientific open access journal in the field of aquatic sciences, published periodically (April and October) by the Institute of Research and Community Service (LPPM) Universitas Malikussaleh (Malikussaleh University) in cooperation with Marine Center Universitas Malikussaleh, Department of Aquaculture Universitas Malikussaleh and Department of Marine Science Universitas Malikussaleh. Acta aquatica are publish original research, overviews and reviews relating to aquatic environments (wetlands, freshwater and marine waters) and the border limits of these environmental systems and the impacts of human activities on the environmental systems. Acta Aquatica has a related studies in aquatic bioecology, aquaculture, hydrology, biodiversity of aquatic biosphere, oceanology, exploitation and exploration technology of aquatic resources, fisheries product technology, aquatic microbiology, aquatic modeling, aquatic geographic information systems, and socio-economic of aquatic resources.
Arjuna Subject : -
Articles 341 Documents
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Size distribution and growth parameters of blue swimming crab (Portunus pelagicus, Linnaeus 1758) in Awur Bay, Jepara Azzahra, Rizqina Nafa Nur; Saputra, Suradi Wijaya; Rudiyanti, Siti
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 2 (August, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i2.11395

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
Perspectives of fishers on the incident of fish kills in Rivers State Coastal Waters, Nigeria Olopade, Olaniyi Alaba; Dienye, Henry Eyina; Oroma, Bestman Success
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 1 (April, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i1.11298

Abstract

This study was conducted to assess fishermen's perspectives on the massive fish kill incident in coastal waters in Rivers State, Nigeria. Primary data were collected using questionnaires from 101 randomly selected fishermen and the data were evaluated using descriptive statistics. The results showed that fishing was the main occupation of the respondents and the interviewed fishermen have fishing experience in the region studied and knowledge of their fishery. The results showed that 53.3 percent of fishermen attributed the strange phenomenon to pollution, while 19.8 percent cited infection and disease as the cause of the fish kills. The majority of respondents (94%) reported that croaker fish species were particularly affected in the study area. Other observations include fish swimming on the surface or jumping onto shore and affected fish washing up on shore. The unusual appearances of the dead fish commonly reported by respondents were as follows: fin rot, open mouth, disease spots and deep blue gills. About half of the respondents (50.5%) gave a range of 1,000 - 5000 dead fish and a size class of the dead fish of more than 30 cm. Most respondents (79.2%) indicated that the government has not taken any action. Few of those surveyed reported government action on sea clean-up exercises to remove dead fish and end oil spillage and bunkering as measures put in place by the government. The study recommended partnerships between the government and fishermen and fishermen's groups as stakeholders are required to address the concerns about marine waters.Keyword: Coastal waters; Fishers; Mass fish mortality; Nigeria
Assessment of antibiotics sensitivity of microbial isolates from fish hatcheries Durojaiye, Abiola; Olajuigbe, O O; Oramadike, C E; Ogunsanya, A K
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 10: No. 3 (December, 2023)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v10i3.10154

Abstract

The study assessed the antibiotics sensitivity of bacterial isolates from fish hatcheries. The result revealed that bacteria of public health importance were isolated, however, the TVC did not exceed 105 CFU/g. A total of 16 isolates were detected. Thirteen (13) antibiotics recorded over 50% resistance, with the highest resistance (100%) observed in amoxicillin clavulanate (AUG). Ofloxime (OFX), gentamycin(GN) and levofloxacin (LBC) recorded the lowest resistance of 18.75%, 37.5% and 43.75% respectively. Only these antibiotics with least recorded resistance had susceptibility ranging between 50% (LBC) and 68.75% (OFX). The overall average resistance of the isolates to antibiotics was 68.75%; susceptibility 26.67% and intermediate 4.58%. Isolates 15 showed the highest resistance of 100%, followed by isolates 12 and 10 with 93.33% and 93.33% resistance, respectively. Resistance range of 60% to 86.67% was observed in isolates 2, 4, 5, 6, 7, 9, 13, 14, 16 and 17. Isolates 3, 8 and 11 had resistance below 50% ranging between 26.67% and 46.67%. The highest multiple antibiotic resistance index (MARI) was observed in isolate 15 with MARI of 1. Isolates 10 and 12 had MARI of 0.93. This was followed in descending order by isolates 2 and 9 (0.86), isolate 5 (0.8), isolate 14 (0.73), isolates 6 and 7 (0.67) and isolates 4, 13, 16 and 17 (0.6). The least MARI recorded were observed in isolates 3 and 11 (0.47) and isolate 8 (0.27), respectively. The emergence of antibiotic resistance on fish farms in Ijebu-Ode region calls for public health intervention strategies.Keywords: antibiotic; fish health; isolates; resistance.
Growth performance of eel fish (Anguilla bicolor) which are maintained in containers of different colors Handajani, Hany; Hermawan, David; Jasmine, Andrea Sherina
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 2 (August, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i2.15205

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
Phytoplankton diversity as a bioindicator in river waters Rinaldi, Rinaldi; Muktitama, Asih Makarti; Nugrahawati, Anis; Yanto, Nopri
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 2 (August, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i2.11300

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
Cultivation of seaweed Caulerpa racemosa on a laboratory scale using liquid organic fertilizer Pramita, Susi; Erniati, Erniati; Zulpikar, Zulpikar; Khalil, Munawwar; Muliani, Muliani
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 1 (April, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i1.5502

Abstract

Indonesia is a maritime country that has seaweed natural resources that have the potential to be developed. Several types of seaweed have started to be cultivated by manipulating the cultivation environment such as providing various types of fertilizers to complement nutrient needs. This research was carried out at the Hatchery Laboratory of the Aquaculture Study Program, Faculty of Agriculture, Malikussaleh University in February -March 2020 which aims to determine the growth rate of Caulerpa racemosa by applying liquid organic fertilizer with different concentrations in the cultivation media. The design used was a non-factorial Completely Randomized Design (CRD) with 4 treatments and 3 replications, namely A Control (without giving liquid organic fertilizer), B (giving liquid organic fertilizer with a concentration of 0.22 mL fertilizer/L water), C (giving organic fertilizer). liquid concentration of 0.28 mL of fertilizer/L of water) and D (giving of liquid organic fertilizer with a concentration of 0.34 mL of fertilizer/L of water). The results showed that the application of liquid organic fertilizer had a very significant effect on the length growth rate of seaweed (Caulerpa racemosa). The best growth rate was in treatment D with a length growth rate of 9.2 cm. There was no significant difference between the weight growth rate and the regeneration rate of the thallus. However, based on the growth yield data for all treatments, it can be said that the higher the concentration of liquid fertilizer used, the better the growth of seaweed (Caulerpa racemosa).Keywords: Caulerpa rasemosa; Pertumbuhan; Pupuk cair; Rumput Laut.
The effect of different lighting times on survival and growth rate of gurami seeds (Oshpronemus gouramy) Hidayat, Muhammad; Putriningtias, Andika; Rosmaiti, Rosmaiti
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 1 (April, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i1.10758

Abstract

This study aims to determine the effectiveness of different photoperiods on maturity and the effect of different light durations on survival and growth of gourami (Ospronemus gouramy) fry. The study was conducted on August 22th - September 22th in the Green House Samudra University.Test fish used is seed of gouramy measuring 5-6 cm. The methods used in this study was Completely Randomized Design (CRD) with 4 treatments and 3 replications. The treatments in this study were P1 (4 hours light, 20 hours dark), P2 (8 hours light, 16 hours dark), P3 (12 jam hours light, 12 hours dark), and P4 (16 hours light, 18 hours dark). Seeds of fish was put in a containing 20 liters of water volume with a stocking density of 10 tails each container. The frequency of feeding is done 4 times a day at 06.00 am, 12.00 am, 18 pm and 24.00 pm. The results showed that different natural feeding teratments had a significant effect on the absolute weight, absolute length growth, daily growth rate, survival, FCR, and water quality. The best treatment in this study was P1 treatment (4 hours light, 20 hours dark) because it had a high value compared to other treatments.Keywords: Gouramy; Growth; Photoperiod; Survival; Weight
Quality assessment of smoked catfishes (Clarias gariepinus, Heterobranchus longifilis and Synodontis clarias) from selected fish markets in Benue State, Nigeria Fanyam, Umawam Samuel; Kwaghvihi, Orfega Benjamin; Annune, Paul Aunde
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 1 (April, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i1.10076

Abstract

The quality assessment of smoked catfish from selected fish markets in Benue state was carried out. Clarias gariepinus, Heterobranchus spp. and Synodontis spp. each weighing 500g were collected from Abinsi and Wadata markets. The proximate composition, mineral composition and organoleptic assessment were carried out. Association of Official Analytical Chemists (AOAC) methods were adopted for the determination of proximate and mineral composition while a 9-point Hedonic scale ranging from 1(dislike extremely) to 9(like extremely) was a procedure for organoleptic quality determination. Results for proximate and mineral compositions showed good standard but varied from market to market. Abinsi fish markets showed that Heterobranchus spp. had 10.16%, 12.74%, 58.98%, 16.42%, 1.71%. Clarias gariepinus had 9.09%, 10.10%, 66.11%, 13.94%, 0.76%. Synodontis spp. had 8.19%, 11.07%, 55.80%, 22.68%, and 2.27% as values for moisture content, ash content, protein content, lipid content and carbohydrates content while Wadata fish market Heterobranchus spp. had 10.34%, 11.89%, 59.48%, 15.71%, and 2.59%. Clarias gariepinus had 8.88%, 11.37%, 68.97%, 10.37%, 0.38%. Synodontis spp. had 8.36%, 12.19%, 56.35%, 21.30%, and 1.81% for moisture content, ash content, protein content, lipid content and carbohydrates content respectively. The mineral composition for Abinsi fish showed that Heterobranchus spp. had 240.33 mg/100g, 395.48 mg/100g, 32.44 mg/100g, 0.03 mg/100g, 0.80 mg/100g, 5.37 mg/100g; Clarias gariepinus had 270.30 mg/100g, 278.05 mg/100g, 32.14 mg/100g, 0.21 mg/100g, 0.30 mg/100g, 5.06 mg/100g; Synodontis spp. had 330.05 mg/100g, 257.78 mg/100g, 34.24 mg/100g, 0.24 mg/100g, 0.40 mg/100g, 6.98 mg/100g; for Potassium, Calcium, Sodium, Copper, Zinc and Iron while in Wadata fish market Heterobranchus spp. had 250.30 mg/100g, 127.88 mg/100g, 39.84 mg/100g, 0.39 mg/100g, 0.68 mg/100g, 4.95 mg/100g; Clarias gariepinus had 410.15 mg/100g, 159.33 mg/100g, 33.03 mg/100g, 0.22 mg/100g, 0.60 mg/100g, 5.96 mg/100g; Synodontis spp. had 300.45 mg/100g, 295.48 mg/100g, 33.93 mg/100g, 0.30 mg/100g, 0.71 mg/100g, 12.0 mg/100g; for Potassium, Calcium, Sodium, Copper, Zinc and Iron. The sensory evaluation revealed that taste, appearance, texture and odour were accepted by the panellist and significant difference occurred (P<0.05) among samples from both markets. The three catfish species from this study were found to be rich in protein content, Potassium, Calcium, and Sodium with low presence of Copper, Zinc, Iron, lipid and carbohydrate contents.Keywords: Catfishes; markets; quality assessment; smoked
Effect of calcium hydroxide (Ca(OH)2) and magnesium sulfate (MgSO4) on vaname shrimp (Litopenaeus vannamei) cultivation in freshwater media Scabra, Andre Rachmat; Marzuki, Muhammad; Rizaldi, Alwan
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 10: No. 1 (April, 2023)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v1i2.9501

Abstract

The purpose of this study was to determine the effect of giving the ratio of Calcium Hydroxide (Ca(OH)2) and Magnesium Sulfate (MgSO4) with different doses on the growth of white shrimp (Litopenaeus vannamei) production in freshwater media. This research was conducted by experimental method using Completely Randomized Design (CRD). The parameter studied was how the effect of the addition of Ca(OH)2 and Magnesium Sulfat (MgSO4) lime with different doses in the maintenance container with 5 treatments and 3 replications, so that 15 experiments were obtained. The treatments applied were: Treatment 1 (P1) Seawater without the addition of calcium and magnesium, P2 Freshwater + 80 ppm Ca(OH)2, P3 Freshwater + 80 ppm Ca(OH)2 and 40 ppm MgSO4, P4 Freshwater + 80 ppm Ca(OH)2 and 80 ppm MgSO4, and P5 Freshwater + 80 ppm Ca(OH)2 and 120 ppm MgSO4. The results showed that the highest survival rate using fresh water was at P4 which was 82%, the specific weight growth rate was 3.9%, and the specific length growth rate was 2.6%. the value of the feed conversion ratio is 0.8. For water quality parameters, the temperature ranges from 30.4-30.60C, water pH 7.2-8.2, DO 6.4-6.6 mg/L, Alkalinity 68-72 ppm, and Ammonia 0.1 mg /L.Keywords: Ca(OH)2; Freshwater; MgSO4; Vannamei Shrimp
Economic valuation of mangrove ecosystem in Tana Tidung Regency Mazlan, Mazlan; Yulianda, Fredinan; Yulianto, Gatot; Rachmawani, Dori
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 2 (August, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i2.15707

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

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