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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.
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Articles 15 Documents
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Search results for , issue "Acta Aquatica, Vol. 11: No. 1 (April, 2024)" : 15 Documents clear
Different dosages effectiveness of Ovaprim on the maturation of freshwater lobster (Cherax quadricarinatus) Feranosa, Cinda; Komariyah, Siti; Fadlon Haser, Teuku
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.v11i1.12682

Abstract

Freshwater lobsters have been developed as a commodity for consumption since 2003. The need for this commodity is increasing but production is still very low, so the price of freshwater lobsters is quite high and expensive. Therefore, it is necessary to carry out reproduction to carry out the seeding process for Freshwater Lobsters (LAT) using an injection technique in the form of the Ovaprim Hormone to accelerate the maturity of the LAT gonads. This study aims to examine the administration of different doses of the ovaprim hormone on the maturation of freshwater lobster broodstock. The research was conducted for 60 days. The method used was a Randomized Block Design (RAK) with 4 treatments and 3 replications. The treatments in this study were P0 (control), P1 (0,3 ml), P2 (0,5 ml) and P3 (0,7 ml). The parameters observed in this study were Gonad Maturity Index (IKG), Egg Diameter and Pleopode Fecundity. The results of the observations showed that giving different doses of ovaprim to the maturation of freshwater crayfish was not significantly different (P<0.05) to the Gonad Maturity Index IKG), Egg Diameter and Pleopode Fecundity but was significantly different to the P0 (control) treatment. The best treatment in this study was treatment P3 (0.5 ,l) because it had the highest performance between the other treatments.Keywords: egg diameter; fecundity; freshwater lobster; maturation; ovaprim
Feeding ecology analysis of sand lobsters (Panulirus homarus) Lubis, Amelia Sriwahyuni; Efrizal, Efrizal; Syaifullah, Syaifullah
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.v11i1.13258

Abstract

This research is scheduled to take place from May to August 2022 at the Marine and Brackish Water Aquaculture Fisheries Center in West Sumatra. The method employed will be observation, which entails monitoring the eating behavior of lobsters and their feeding schedule every time food is provided within a 24-hour timeframe. Data pertaining to lobster eating behavior will be analyzed descriptively based on these observations. Throughout the research, various feeding activities of sand lobsters were documented. The observational results indicated that the lobster feeding process remained consistent. The lobster typically initiates the process by gripping the food with its claws and feet, subsequently breaking it into smaller pieces with its claws, and then placing these fragments into its mouth. As the lobster tears apart the food, the next step involves transferring it to the mouth using the nearest upper and lower jaws. In light of this research, it can be inferred that lobster feeding behavior encompasses the following steps: firstly, the lobster approaches the food after spotting it; secondly, lobsters employ their claws to grasp the food; and finally, lobsters tear and ingest the food. Lobster feeding activities are most commonly observed between 6:00 PM - 10:00 PM and 10:00 PM - 2:00 AM.Keywords: eating behavior; lobster; Lobster feeding schedule.
On the occurrence of three blennid species in the South-eastern Mediterranean coast of Turkey Erguden, Deniz; Sereflisan, Menderes; Uygur, Necdet
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.v11i1.10995

Abstract

In the present study, three blennid species of Aidablennius sphinx (Valenciennes, 1836) Parablennius tentacularis (Brünnich, 1768) and Scartella cristata (Linnaeus, 1758) were reported from the southeastern Mediterranean waters with visual records during an underwater survey conducted on October 19, 2015 in the Konacik and, on July 30, 2016 in the Çevlik coast at a depth ranges of 2-10 m. The present report is the occurrence and is the first confirmation of three blennid species from Iskenderun Bay, Turkey (South-eastern Mediterranean Sea). Besides, this study will be useful fisheries biology and ecology and also contribute to fisheries scientists.Keywords: Blenniidae, Combtooth blennies; Iskenderun Bay; Mediterranean Sea; observation
Community structures of bivalves in the coastal area of Lungkap Village, Pinolosian, Bolaang Mongondow Selatan District Damopolii, Yenita; Kadim, Miftahul Khair; Paramata, Arfiani Rizki
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.v11i1.13424

Abstract

This research aims to identify the structure of the bivalve community on the coast of Langkat Village, Pinolosian, South Bolaang Mongondow District. Sampling was carried out from December 2020 to January 2021 at three stations, namely seagrass beds (station I), tourist attractions (Station II), and mangroves (Station III), using the quadrant transect method, where each observation station made a line transect from the mainland towards the sea. Line transects are placed at each station, while the distance between line transects is 50 m. Observation results show that the bivalves at the research location consist of five families (Arcidae, Asteridae, Cyprinidae, Cardiidae, Ostreidae) an six types of bivalves, where the diversity index is low and the uniformity index is moderate, indicating that the distribution of each type is relatively even.Keywords: Bivalve; coastal; community structure; Lungkap
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
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
Evaluation of distribution and management of marine debris on the Pangandaran Coast Satriawan, Ratu Balqist Priesty Higina; Ihsan, Yudi Nurul; Herawati, Titin; Nurhayati, Atikah; Yuniarti, Yuniarti; Sunarto, Sunarto
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.v11i1.13709

Abstract

The increasing number of tourist visits and activities of coastal communities affects the distribution of marine waste on the Pangandaran coast, resulting in waste generation that pollutes the coastal environment. This is due to a lack of awareness in disposing of waste in its proper place, a lack of cleaning facilities and a waste transport fleet by the Pangandaran district government. The aim of this research is to provide an evaluation regarding the distribution of marine waste and its management on Pantai Timur, Pantai Barat and Pantai Madasari. Using Survey Method and Driving Force-Pressure-State-Impact-Response data analysis. The research location was carried out in three locations, namely on the Pantai Timur, Pantai Barat and Pantai Madasari. The results of this research are that the distribution of marine debris on Pantai Timur, Pantai Barat and Pantai Madasari is categorized as moderate. This causes pressure on coastal areas where there is waste generation at several research stations. The most common type of waste is plastic waste with a percentage of 45-54% on Pantai Timur, 36-55% on Pantai Barat and 43-51% on Pantai Madasari. The type of waste that is least found is rubber with a percentage of 2-3%. The actions taken by Pangandaran Village and the Pangandaran Regency Environment and Hygiene Service (DLHK) are waste management using a collect-transport-dispose system, community service to clean the beach with the community on Fridays, and the availability of several rubbish bins at every distance of 10 meters. Waste management on Pantai Madasari is managed by the village government, where this authority is handed over to Village-Owned Enterprises using a collect-transport-dispose system and burned directly at the temporary disposal site (TPS).Keywords: Coastal; DPSIR; plastic; pollution; waste distribution
Effectiveness of different photoperiods on gonad maturity and reproductive performance of freshwater crayfish (Cherax quadricarinatus) Jamaluddin, Jamaluddin; Komariyah, Siti; 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.v11i1.10746

Abstract

This study aimed to determine the effectiveness of different photoperiod on gonad maturity and reproductive performance of freshwater crayfish. The study was conducted on July 22th - August 22th in the Green House Samudra University. Test fish used is seed of cherax quadricarinatus measuring 4-5 inches. The methods used in this study was Completely Randomized Design (CRD)with 4 treatments and 3 replications. The treatments in this study were P1 (8 hours light, 16 hours dark), P2 (10 hours light, 14 hours dark), P3 (12 jam hours light, 12 hours dark), and P4 (14 hours light, 10 hours dark). Seeds of fish was put in a containing 8 liters of water volume with a stocking density of of 1 tails male and female each container. The frequency of feeding is done 3 times a day at 08.00 am, 16.00 pm and 20.00 pm. The results showed that different natural feeding teratments had a very significant effect on the absolute weight, gonad maturity level (TKG), gonad maturity indexs (IKG), fecundity, and egg diameter. The best treatment in this study was P1 treatment (8 hours light, 16 hours dark) because it had a high-performance value compared to other treatments.Keywords: Absolute weight; Cherax quadricarinatus; Fecundity; Gonad; Photoperiod.
Biophysical characteristics of coastal habitat at Geleang island Karimunjawa National Park as a nesting area hawksbill turtle (Eretmochelys imbricata, Linnaeus 1766) Anggieta, Yayank Dita; Afiati, Norma; Widyorini, Niniek
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.v11i1.9360

Abstract

The hawksbill turtle (E. imbricata) are internationally Critically Endangered as determined by the IUCN. For this reason, action is needed to preserve the sea turtle in the future. The purpose of this study was to determine the bio-physical characteristics of the beach (beach width and slope; pH, temperature, grain size and sand moisture; nest size; nest distance from high tide; beach vegetation and predators) where hawksbill turtles (E. imbricata) lay their eggs on Geleang Island, Karimunjawa National Park. Concerning conservation, the number, condition, egg removal techniques and egg maintenance found on Geleang Island from January to February 2022 were also described. The research was conducted from January to April 2022 using the observation method which includes field observation and primary data collection. The results showed that Geleang Island has a narrow beach width with a gentle slope. The pH of the sand ranges from 6.5 - 7, the average sand temperature variable is around 28ËšC. Sand humidity has a value range of 82% - 90%. Sand grain analysis on Geleang Island, the results of the most retained sediment were found to be on test sieves with a diameter of 250 µm so that it was classified as a type of medium sand. The dominant vegetations are sea pine (Casuarina equisetifolia) and gabusan (Scaevola taccada). No predators of hatchlings were found on Geleang Island. The amount of hawksbill turtle eggs found on Geleang Island from January to February 2022 amounted to 1.981 eggs.Keywords: Characteristic of coastal habitat; hawksbill hatchlings

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