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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 5 Documents
 1 
Search results for , issue "VOLUME 1 ISSUE 1, MAY 2020" : 5 Documents clear
The relationship between blue swimming crab (Portunus pelagicus) abundance and environmental parameters in Spermonde Archipelago Muh Saleh Nurdin; Eniwati Eniwati; Teuku Fadlon Haser; Nur Hasanah
Tomini Journal of Aquatic Science VOLUME 1 ISSUE 1, MAY 2020
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (494.074 KB) | DOI: 10.37905/tjas.v1i1.5917

Abstract

Management and conservation of the blue swimming crabs by the marine protected area method require the abundance and environmental parameter information of the blue swimming crab. The aim of this study is to analyze the changes in the relative abundance of the blue swimming crab and its environmental parameters. The study was conducted from March to July 2015, in the waters of Salemo Island, Spermonde Archipelago. The specimens were collected at the three fishing locations around the mangrove, seagrass, and coral reef ecosystems. The variable of relative abundance of the blue swimming crab is determined catch per effort. Samples of environmental parameters such as temperature and current speed are measured in situ. However, for the salinity, dissolved oxygen, ammonia, nitrate, plankton, and chlorophyll-a were analyzed in the laboratory. A comparison of the blue swimming crab abundance in each ecosystem was conducted by One Way ANOVA. Moreover, the relationship between blue swimming crab abundance with environmental parameters was analyzed by multiple regression. The results show that the blue swimming crab is abundant in the seagrass and coral reefs. The environmental parameter that significantly influences the abundance of the blue swimming crab is salinity. The suitable area for blue swimming carb protection based on abundances are seagrass and coral reef ecosystems.
Density of the blue-black urchin Echinotrix diadema (Linnaeus, 1758) in Tomini Bay, Indonesia La Nane; Alfi Sahri R Baruadi; Herinda Mardin
Tomini Journal of Aquatic Science VOLUME 1 ISSUE 1, MAY 2020
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (432.419 KB) | DOI: 10.37905/tjas.v1i1.5939

Abstract

The blue-black urchin has been widely known and utilized as food in the world, including Indonesia because sea urchin gonad can be consumed. However, the utilization of sea urchins in Gorontalo has not been performed. On the other hand, natural resources information is needed as the database for natural resources management in Tomini Bay. The aim of this study is to document the blue-black urchin Echinotrix diadema. This study conducted at Blue Marlin Beach, South Leato, Gorontalo, from November 2019 to December 2020. Sea urchin density was calculated with a 1 m × 1 m transect quadrate that positioned at interval 5 m in distance along 15 m of the transect line at the coral reef ecosystem. In parallel with the measurement of the density, sea urchin test diameter was measured with a Vernier caliper (0.01 mm accuracy), and the water temperature was measured with a thermometer. The results show that the average of sea urchin density is 3 ind. m–2 in November and December and 1 ind.m–2 in January. That density has no significant difference among the month. Moreover, the average size of the sea urchin test diameter is 60 mm in November, 63 mm in December, and 66 mm in January. The seawater temperature is 34 °C in November, 37 °C in December, and 33 °C in January. That results show that sea urchin density in the blue marlin beach is very low.
Estimation of gillnet selectivity for Tor tambra captured in Lirik River, Merangin Regency, Jambi Province Muhammad Natsir Kholis; Sulaeman Martasuganda; Mohd. Yusuf Amrullah; Jaliadi Jaliadi
Tomini Journal of Aquatic Science VOLUME 1 ISSUE 1, MAY 2020
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (460.115 KB) | DOI: 10.37905/tjas.v1i1.5830

Abstract

Fishing gear selectivity is the condition of a fishing gear that can catch fish the target of catching and escaped other fish so that selectivity has an essential role for fisheries managers who make regulations regarding the mesh size. The purpose of this study is to estimate the selectivity of gillnet fishing gear on Semah fish (Tor tambra). The method used in this research is the experimental fishing method. The results showed that the gillnet in the Lirik river has an estimated value of selectivity to Semah fish (Tor tambra) mesh size of 1.5 inches at a length of 48.59 cm and a mesh size of 2 inches at a length of 64.78 cm. Semah fish (Tor tambra) which have a length far below the estimated value of selectivity will be able to pass through the net without getting caught (escaped), and fish that have a length far above the estimated value of selectivity will be entangled.
Morphology and growth pattern of Nike fish (amphidromous goby larvae) in Gorontalo Waters, Indonesia Nuralim Pasisingi; Abdul Hafidz Olii; Sitty Ainsyah Habibie
Tomini Journal of Aquatic Science VOLUME 1 ISSUE 1, MAY 2020
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.967 KB) | DOI: 10.37905/tjas.v1i1.5622

Abstract

Nike is a terminology used by Gorontalo local community to name schooling of minuscule amphidromous goby fish that has a limited appearance in Gorontalo waters. Understanding the biological performance of Nike fish is vital for implementing management and conservation strategy. This study aims to analyze daily recruitment and to determine growth patterns of Nike fish population in nature. Sampling was conducted in the Gorontalo waters during March, April, and May 2018 using a fish net with a mesh size of 0.5 inches. The duration of the appearance of Nike schooling in waters varies every month. The number of fish samples collected each month in this study ranged from 150 to 300 individuals. This study reveals that body color diversity and morphology of Nike fish strongly alleged to depend on where and how long they appear in the waters. Based on the daily recruitment pattern, Nike fish population distributed in Gorontalo waters is predicted to consist of individuals from multi-generation with an average length range of 1.848–2.805 cm. During the sampling time, a positive allometric growth pattern indicated by the population.
Composition of coral species and benthic organism at Tiaka Oilfield, Tolo Bay, Central Sulawesi Kasim Mansyur; Achmad Rizal; Musayyadah Tis'in; Muh Saleh Nurdin; Nuke Susanti
Tomini Journal of Aquatic Science VOLUME 1 ISSUE 1, MAY 2020
Publisher : Gorontalo State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.815 KB) | DOI: 10.37905/tjas.v1i1.5941

Abstract

This research aims to find out the composition of the coral and benthic organisms at Tiaka Oilfield. This study was conducted in July 2015. Monitoring of coral and benthic organisms used line intercept transect and visual census method. The research results indicated that 16 coral species were consisting of 6 genera. Coral species dominated by the genus Acropora. Benthic organisms that live in symbiosis with coral reef ecosystems in the Tiaka Oil Field were found 11 benthic species consisting of 54 species

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