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Tomini Journal of Aquatic Science
Published by Universitas Negeri Gorontalo
ISSN : -     EISSN : 27223787     DOI : https://doi.org/10.37905/tjas
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Tomini Journal of Aquatic Science (Tomini J. Aquat. Sci.) is an open-access peer-reviewed journal that published by the Faculty of Fisheries and Marine Science, Gorontalo State University. This journal dedicated to the research in the field of aquatic sciences (freshwater, marine, and brackish). Topics of interest include but are not limited to; aquatic bioecology, aquatic biodiversity, aquatic toxicology, aquatic management, and aquaculture.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 34 Documents
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Octolasmic Octolasmis spp. parasite attack on mudcrab Scylla serrata in Tomini Bay Suherman, Sutianto Pratama; Marjan, Rahmatiya; Lamadi, Arafik
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 2, NOVEMBER 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i2.14179

Abstract

The present study aimed to identify the Octolasmis spp. ectoparasite's intensity and prevalence in mud crab in Pohuwato Regency. It employed survey and site observation methods with sampling technique of mud crabs in Pohuwato Regency. The research was carried out in three different sites: site 1 (Pohuwato Timur Village), site II (Bulili Village), and site III (Mootilango Village). The results showed that the parasites infesting mud crab in the three separate locations are Octolasmis angulata and Octolasmis cor. The highest intensity rate was at site III, which was dominated by Octolasmis cor. The prevalence of the parasite in sites I, II, and III was 60%, 40%, and 60% in consecutive order. Moreover, the parasite has a 100% and 46% prevalence in female and male crabs, respectively. The water quality indicator (involving temperature, pH level, and soluble oxygen) was at the appropriate rate for mud crab farming.
Application of Different Temperatures in the Incubation Process of Jurung Fish Eggs (Tor tambra) Firdaus, Rian; Nurhatijah, Nurhatijah; Rismawati, Shela
Tomini Journal of Aquatic Science VOLUME 2 ISSUE 2, NOVEMBER 2021
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v2i2.11832

Abstract

The habitat of the Jurung Fish (Tor tambra) is generally inflowing rivers, rocky bottom waters and relatively low water temperatures. This study aimed to determine the hatchability of the Jurung Fish (Tor tambra) eggs with different temperature treatments using a tray in the aquarium. The research method used is the laboratory experimental method and the experimental design is a non-factorial completely randomized design (CRD) consisting of 4 treatments and 4 replications: A (control), B (28°C), C (30°C) and D (32°C). The results showed that the application of different temperatures had a significant effect on the hatching of the Jurung Fish (Tor tambra) eggs. The results of Duncan's further test analysis showed that the 28°C temperature treatment was the best compared to other temperatures. This study recommends that further research is needed on larval abnormalities at different water temperatures.
Analisis uji daya hambat ekstrak lamun terhadap bakteri patogen di Pulau Bone Batang dan Barrang Lompo, Perairan Spermonde Nurfadilah, Nurfadilah; Haris, Abdul; Lukman, Muhammad
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 2, NOVEMBER 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i2.17026

Abstract

Seagrass beds are a wealth of marine resources, one of the ecosystems found in coastal areas, capable of producing various secondary metabolites, and seagrasses are known to contain antibacterial active compounds. The purpose of this study was to determine the antibacterial potential of seagrass extracts from Zone I (large and small Lae-lae Island) and Zone II (Gusung Bone Batang and Barrang Lompo) against Staphylococcus aureus and Escherichia coli bacteria. The test method used is the agar diffusion method. The results showed that in Zone I, H. ovalis had an average inhibition of 7.9 mm and E. acoroides had an average inhibition of 8.15 mm, while in Zone II, E. acoroides was 2.5 mm, C Rotundata 1.18 mm, H. uninervis 1.53 mm, T. hemprichii 1.2 mm and H. ovalis 1.73 mm. The highest level of antibacterial activity was in the type of E. acoroides.
Growth performance and efficiency of protein utilization in giant tiger prawn, Penaeus monodon reared in tarpaulin pond with and without faecal chamber Saade, Edison; Fachruddin, Liestiaty; Anshary, Hilal; Lante, Samuel; Haryati, Haryati; Said, Rosmala D.; Wanda, Amalia; Arlini, Fitriwi
Tomini Journal of Aquatic Science VOLUME 2 ISSUE 2, NOVEMBER 2021
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v2i2.13347

Abstract

The accumulation of organic matter at the bottom of the pond greatly affects nutrient metabolism, feed efficiency, growth and productivity in giant tiger prawn cultivation. One of the causes is improper pool bottom construction The purpose of this study was to compare the growth performance and efficiency of protein utilization in giant tiger prawns consuming artificial feed supplemented with multi-enzymes and reared in tarpaulin ponds constructed between not and using the faecal chamber (FAMBER) or the space of metabolic waste and unconsumptioned feed (SOMECOF) at the bottom of the pond with a recirculating aquaculture system (RAS). A tarpaulin pond with a diameter of 3 m and a height of 100 cm filled with 80 cm of seawater. The tarpaulin pond is equipped with a transparent plastic roof, seawater and aeration installation, and a filter in the water pump tank. The average body weight of the experimental prawn used were 8-9 g. The feed given is pellet type artificial feed supplemented with multi-enzymes at a dose of 30 cc/kg of feed. The frequency of feeding were four times a day, namely at 07:00; 12:00; 17:00 and 22:00 with a dose of 5%. The parameters measured were growth performance including growth, condition factors and feed efficiency, while the efficiency of protein utilization included protein content, protein efficiency ratio, amino acid profile, index and score of essential amino acids of feed and experimental prawn. Data analysis was done descriptively. The results showed that all parameters of growth performance and efficiency of protein utilization in tiger prawns reared in tarpaulin ponds using FAMBER were better than those without FAMBER. Based on the results of the study, it was concluded that keeping giant tiger prawns in a tarpaulin pond using a FAMBER is better than not using a FAMBER.
Assessment of octopus fisheries management based on fishing technique domain by EAFM (ecosystem approach to fisheries management) in Tarupa Island Azis, Abd.; Syamsuddin, Haryuna; Yusuf, Muhammad Yusfi; Syamsuarty, Siti; Rismayani, Andi; Sainal, Sainal
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 2, NOVEMBER 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i2.17015

Abstract

The increase in the utilization of octopus fishery has made it one of the main commodities of the national fisheries sub-sector. One of the areas that make octopus the main commodity for fishing targets is located on Tarupa Island, Selayar Islands Regency. However, with the increasing market demand for octopuses, the pressure on catching octopus will increase so that it is feared that it will disrupt the octopus's own resources. This study aims to evaluate the management status of octopus fisheries on Tarupa Island using the EAFM (Ecosystem Approach to Fisheries Management) approach in the domain of fishing techniques. The assessment of fisheries management in this study uses a method that refers to the NWG EAFM (National Working Group Ecosystem Approach to Fisheries Management) module. In these various methods, the types of data taken are primary data and secondary data. Analysis of the data used an ordinal-based Likert scoring with scoring assessments of 1, 2, and 3. The greater the value, the better the EAFM fisheries management. The results showed that the management of octopus fisheries on Tarupa Island, Selayar Islands Regency based on the EAFM assessment in the fishing technique domain obtained a composite value of 92 with the category of Very Good status. The majority of all indicators get the maximum scoring value, only the fishery crew certification indicator by the regulations obtains the minimum scoring value
Characteristics of Avicennia lanata (Ridley) Species for mangrove restoration on the coast of North Gorontalo Faizal Kasim
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 1, MAY 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i1.15541

Abstract

Research on the rare mangrove Avicennia lanata (Ridley) is based on the habitat affinity of this species on the coast of North Gorontalo observed during 2017-2019. The current search was carried out in geographically isolated areas (land and islands) using a combination of tracking and Point Centered Quarter (PCQ) techniques to observe the substrate condition and elevation of the mangrove patch habitat, as well as to observe the morpho-anatomical character of the stand. The results showed that the habitat affinity of A. lanata species in North Gorontalo covers a wide range of substrate types, including mud, sandy mud, sand, muddy sand, and sandy and muddy soil on land with an elevation of 5.11–6.57 MDPL. The morpho-anatomical character as a distinguishing feature of A. lanata species from other Avicennia species found in leaves, stems, and fruit, could only be observed clearly in individual stands and trees. This study recommends restoration/monitoring of mangrove species A. lanata (Ridley) with a mixed-species restoration approach and community-based co-planting in a long-term mangrove restoration program in the coastal area of North Gorontalo.
Species composition and abundance of fishes in seagrass meadow ecosystem in tontayuo village and lamu village, batudaa pantai subdistrict, gorontalo regency, tomini bay area. Novia Tumewu; Munirah Tuli; La Nane
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 1, MAY 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i1.16999

Abstract

The objective of this research was to determine the species composition and abundance of fishes in the waters of Tontayuo Village and Lamu Village, Batudaa Pantai Subdistrict, Gorontalo Regency. This research was conducted from April to May 2022. The data collection of this research was carried out using a net with a length of 50 m, a widh of 2 m, and a mesh size of 1.5 cm drawn in the seagrass meadow, and it was replicated three times at each station, namely station I (Tontayuo Village) and station 2 (Lamu Village). The findings denoted that the highest species composition was found at station I with 34 species, while at station 2, there ware only 11 species. At the same time, the highest abundance value found at station 1 was Piotosus lineatus species, and the highest abudance at station II was Caranx melampyus species. Overall, the finding signified that the composition and abundance of fishes at station I and station II ware highly different due to the different water condition and fishing times.
Exploration of the potential of vitamin premix with different doses to increase growth and survival of saline tilapia (Oreochromis niloticus) on laboratory scale environment Hasim Hasim; Salma Suna; Rully Tuiyo
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 1, MAY 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i1.16380

Abstract

Tilapia is an important commodity for Indonesian fisheries. Therefore, tilapia cultivation continues to grow. The goal is to meet market needs and increase production more optimally. One of them is through feed innovation to increase growth and maximum survival. This study aimed to explore the effect of giving vitamin premix with different doses on the growth and survival of saline tilapia (Oreochromis niloticus) fry. The method used is an experiment with a completely randomized design (CRD) which consists of 4 treatments with three replications. Treatment A (without added vitamins), B (vitamin premix 3%), C (vitamin premix 4%), D (vitamin premix 5%). The results showed that treatment D had a significant effect on increasing the weight and length of saline tilapia with an average weight value of 3.21 and an average length value of 2.67, followed by treatment C weight with a value of 2.50 and a length of 2, 05, treatment B was heavy with a value of 2.49, and length of 1.86 and treatment A was heavy with a value of 1.60, and length of 1.23. The highest survival was in treatment D with a value of 100%, treatment C with a value of 93.3%, treatment B with 86.7%, and treatment A with 80.0%. Vitamin premix dose D gave the best effect, so it has the potential to be applied in saline tilapia cultivation.
Density of caalcareous macroalgae Halimeda sp. and Padina sp. around the water of Kodingareng Lompo Island, Spermonde Archipelago, Indonesia Bakti, Nurqadri Syaia; Rukminasari, Nita; Yaqin, Khusnul; Nane, La; Yusuf, Muh Yusfi
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 2, NOVEMBER 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i2.17002

Abstract

Based on the results obtained from this study, it can be concluded that: (1). Halimeda sp density based on stations, there is a noticeable difference between station 1 and station 3, (2)Halimeda sp density based on the research time, namely there is a noticeable difference between the study time in July and October, (3) Padina sp density based on stations, there is a noticeable difference between station 1 and station 2, and (4). The density of Padina sp is based on the time of the study, that is, there is a noticeable difference between the time of the study in July and October.
The state's obligation to protect highly migratory species according to the 1982 law of the sea convention Hilda, Hilda; Asriyani, Asriyani
Tomini Journal of Aquatic Science VOLUME 3 ISSUE 2, NOVEMBER 2022
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/tjas.v3i2.15485

Abstract

Highly Migratory Species are one of the fish resources legally protected according to the UNCLOS 1982. This protection is carried out to ensure adequate world fish stocks and the sustainability of these fish resources. Internationally, the efforts to protect it are the obligation of all countries. This study examines the state's commitment to preserving these Highly Migratory Species. This research is normative juridical research that utilizes secondary data, including primary, secondary, and tertiary legal materials using qualitative analysis. The study results show that several international legal instruments complement the provisions of the UNCLOS 1982, which regulates the state's obligations to protect Highly Migratory Species in a concrete way, i.e., related to management and conservation. Some regional fisheries organizations have been formed to implement the state's obligation to cooperate in managing and protecting Highly Migratory Species in each specific regulated area.

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