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TEST OF EFFECTIVENESS OF RUBBER CASSAVA ROOT BARK (Manihot glaziovii) AS A SUBSTITUTE FOR SAPONINS IN AQUACULTURE Aulia, Deni; Putra, Angkasa; Aini, Sarifah; Sabariyah, Nunung; Harahap, Kurnia Sada
Aurelia Journal Vol 5, No 2 (2023): Oktober
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/aj.v5i2.12655

Rubber cassava root (Manihot glaziovii) bark contains an active substance known as Hydrogen Cyanide (HCN), which is toxic to red-blooded animals. This bark is abundant and readily available in the community’s surroundings. Therefore, this research aims to investigate the effect of using rubber cassava root bark at specific doses in eradicating red-blooded fish. The test animals used are Nile tilapia (Oreochromis niloticus). Each treatment is repeated three times and assigned specific codes: code A as a control with the application of 20 ppm saponin, and codes B, C, and D with the application of rubber cassava root bark liquid at 20 ppm, 40 ppm, and 100 ppm, respectively. The parameter used as the observation criterion is the mortality rate of the test animals over 6 hours with varying doses of rubber cassava root bark liquid. Based on the research results, it can be concluded that rubber cassava root bark liquid can be used as an alternative to replace saponin at 100 ppm. Further research is required to determine the most effective dose of rubber cassava root bark as a substitute for saponin in aquaculture.

Study of Coral Reefs in the Tourism Zone of Hoga Island, Wakatobi National Park, Southeast Sulawesi, Indonesia Hawati, Hawati; Mustafa, Mustafa; Yusuf, Yusuf; Putra, Angkasa; Suriadin, Herianto
Journal La Lifesci Vol. 5 No. 1 (2024): Journal La Lifesci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallalifesci.v5i1.905

One of the ecosystems in tropical waters is the coral reef. Coral reefs serve multiple functions, both ecologically and economically. The marine waters in Wakatobi Regency boast diverse coral reefs, and this study aims to assess the coral reefs in one of its regions, specifically in the waters around Hoga Island, part of Wakatobi National Park. The research was conducted from March to May 2023, involving direct observations at the research site. The collected data were then analyzed and presented descriptively concerning the percentage of coral reefs in the study area. The percentage of coral cover in the growth forms (lifeform) of the Wakatobi National Park tourism zone, region II, revealed that, at the first station, coral cover was 46.33%, dominated by Coral Branching (CB) at 22.36%, and Biotic, primarily Soft Coral (SC), at 14.95%. At the second station, coral cover was 36.13%, with Coral Branching (CB) accounting for 11.53%, and Soft Coral (SC) at 25.33%. The third station exhibited a coral cover percentage of 60.37%.

OBSERVASI DAERAH PENANGKAPAN IKAN DI PERAIRAN LAUT JAWA DAN SELAT MAKASSAR Larasati, Rakhma Fitria; Jaya, Made Mahendra; Mahardi, I Gusti Ngurah Kadek Hary; Putra, Angkasa; Bramana, Aditya; Aini, Sarifah; Hamdani, Hamdani; Ariana, Made
Jurnal Teknologi Perikanan dan Kelautan Vol 15 No 2 (2024): JUNI 2024
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24319/jtpk.15.203-210

Fishing grounds in the Java Sea and Makassar Strait are important fishing areas for fishermen. The aim of this research is to analyze the process of determining fishing ground (DPI), explain the results of observations of water temperature and salinity in each DPI that has been determined, and identify the type of catch, using the Tirta Putra Kencana I Fishing Boat (fishing equipment purse seine). This research was conducted at Java Sea and Makassar Strait from December 2022 until April 2023. The research methodology employed was observation and the analysis used was descriptive analysis. Primary data were obtained through on-site observations, including the determination of FG and the measurement of temperature, and salinity at each FG location. The selection of FG is based on several criteria, including fishing license areas, non-interference with commercial shipping, safe water conditions, and minimal impact from adverse weather in the region. Temperature and salinity measured indicated that, on average, the Java Sea and the Makassar Strait waters exhibited similar characteristics. However, FG near the coastline showed lower temperatures and higher salinity levels. The predominant catch consists of shortfin scad (Decapterus macrosoma) dan Indian scad (Decapterus russelli) inhabiting offshore waters, followed by coastal species such as Indian oil sardine (Sardinella sp.). Large pelagic fish species were more commonly captured in the western fishing grounds.

Enhancing Catfish (Clarias sp.) Farming Production and Economic Viability through Molasses Application in Biofloc System Aulia, Deni; Suprakto, Bambang; Budimawan, Budimawan; Putra, Angkasa; Aini, Sarifah; Asaf, Ruzkiah; Wartini, Sri; Sabariyah, Nunung
Depik Vol 13, No 1 (2024): APRIL 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.1.36892

In addition to having high economic value, catfish (Clarias sp.) can also be cultivated quickly and they can adapt well. The demand of catfish is in line with the increase in production which is expected to remain efficient and environmentally sound. Biofloc technology has also been implemented in catfish for increasing productivity. Biofloc utilizes the activity of heterotrophic microorganisms and autotrophs for the conversion of organic waste into floc and is used as fish feed. This study aims to examine the effect of the use of molasses with different doses (C/N ratio) on the growth and survival rate of catfish. This study was conducted with as many as 3 treatments with 3 repetitions each except for the control. The treatment with the ratio of molasses in each of them: A: C/N of 10:1; B: C/N of 15:1; C: C/N of 20:1, and D without molasses given as control. The study using 240 catfish measuring 10-12 cm was carried out for 30 days with sampling every 10 days. It aims to determine the average growth, daily growth, and survival rate of test biota during the study. Based on the results of this study, it can be concluded that the use of different doses of molasses in catfish farming, and biofloc technology will affect the growth and survival rate of farmed catfish. Catfish farmed with biofloc technology at a C/N ratio of 15:1 show the best results on their growth and survival rate. In addition, catfish farming with a biofloc C/N ratio of 15:1 has a better economic analysis when compared to conventional catfish farming. In summary, the use of biofloc based on research results can be a recommendation to be applied in the community, especially among catfish farmers.

Enhancing Catfish (Clarias sp.) Farming Production and Economic Viability through Molasses Application in Biofloc System Aulia, Deni; Suprakto, Bambang; Budimawan, Budimawan; Putra, Angkasa; Aini, Sarifah; Asaf, Ruzkiah; Wartini, Sri; Sabariyah, Nunung
Depik Vol 13, No 1 (2024): APRIL 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.1.36892

In addition to having high economic value, catfish (Clarias sp.) can also be cultivated quickly and they can adapt well. The demand of catfish is in line with the increase in production which is expected to remain efficient and environmentally sound. Biofloc technology has also been implemented in catfish for increasing productivity. Biofloc utilizes the activity of heterotrophic microorganisms and autotrophs for the conversion of organic waste into floc and is used as fish feed. This study aims to examine the effect of the use of molasses with different doses (C/N ratio) on the growth and survival rate of catfish. This study was conducted with as many as 3 treatments with 3 repetitions each except for the control. The treatment with the ratio of molasses in each of them: A: C/N of 10:1; B: C/N of 15:1; C: C/N of 20:1, and D without molasses given as control. The study using 240 catfish measuring 10-12 cm was carried out for 30 days with sampling every 10 days. It aims to determine the average growth, daily growth, and survival rate of test biota during the study. Based on the results of this study, it can be concluded that the use of different doses of molasses in catfish farming, and biofloc technology will affect the growth and survival rate of farmed catfish. Catfish farmed with biofloc technology at a C/N ratio of 15:1 show the best results on their growth and survival rate. In addition, catfish farming with a biofloc C/N ratio of 15:1 has a better economic analysis when compared to conventional catfish farming. In summary, the use of biofloc based on research results can be a recommendation to be applied in the community, especially among catfish farmers.

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