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Dony Prasetyo
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ijota@umm.ac.id
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+6281299136444
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ijota@umm.ac.id
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Kampus III (3rd Campus) Universitas Muhammadiyah Malang, GKB 1 (1st Building), Lantai 5 (5th floor), Aquaculture Department (Room 505)
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Kota malang,
Jawa timur
INDONESIA
Indonesian Journal of Tropical Aquatic
Published by Universitas Muhammadiyah Malang
ISSN : -     EISSN : 26224836     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Indonesian Journal of Tropical Aquatic (IJOTA) is open access publishes papers two times a year in February and Augst. IJOTA will publish the research results useful for the sustainability of fisheries. IJOTA is a scientific journal that discusses the results of research in science, technology, marine and freshwater fisheries that have not been published. Articles should be created in a language that is easily understood by non-specialist readers in the topic of the article itself, but interested in research. This scientific article includes the results of research on Aquaculture (Fish Nutrition, Fish Health and Diseases, Water Quality, Fish Genetics Improvement and Breeding, Fisheries Engineering and Biotechnology), Aquarium Sciences, Aquatic Ecology (Marine, Brackish, Freshwater), Conservation of Aquatic Resources and also Coastal Management. A journal script should be written in English.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 6 Documents
 1 
Search results for , issue "Vol. 4 No. 2 (2021): August" : 6 Documents clear
The effectivity of Garlic (Allium sativum L.) and Turmeric (Curcuma longa L.) in Tilapia (Oreochromis niloticus) infected by Edwardsiella tarda Novi Susanti; Dini Oktaviani; Leni Apriani; Gustriana Gustriana
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 4 No. 2 (2021): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v4i2.17961

Abstract

The aim of this study is to determine the effectivity of Garlic (Allium sativum L.) dan Turmeric (Curcuma longa L.) in Tilapia (Oreochromis niloticus) infected by Edwardsiella tarda. We used sensitivity test with disc diffusion Kirby-Bauer method. The 24 hours purified E. tarda isolate, cultivated in Mueller Hinton Agar (MHA) by swabbing it using a sterile swab on the MHA surface, next put paper disc contain variants garlic concentrations and turmeric. Incubated MHA on the room temperature (30 oC) for at least 24 hours, inhibition zone diameter is measured to see the effectivity. Serial Tube Dilution method is used to determine the Minimum Inhibitory Concentration (MIC) value for garlic and turmeric. Used as medication base on the second stage were 1 × MIC2 × MIC4 × MIC and 8 × MIC. Statistical analysis used completely randomized design, with 6 treatment and 4 repetition which density 10 ind/aquarium each. The result showed that garlic and turmeric inhibited E.tarda effectively, the highest survival rate was 1 × MIC at 8000 ppm for garlic and 1 × MIC at 20 ppm for turmeric. However, MIC level cannot be used as reference to determine the dose of herbal treatment, we can determine the dose by using disc volume in resistance test.
Relationship of water quality with bacterial disease in Dumbo catfish (Clarias gariepinus L) in culture ponds in Palembang city Leni Apriani; Novi Susanti; Gustriana Gustriana
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 4 No. 2 (2021): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v4i2.17963

Abstract

This study aims to determine water quality related to the occurrence of bacterial diseases of “Dumbo” catfish (Clarias gariepinus) reared in the pond. Field study was conducted at Bukit Lama and Bukit Baru Ilir Barat I Bukit Besar Palembang and laboratory studies was conducted at the Laboratory of Fish Quarantine Center of SMB II Palembang. The study was carried out at 3 representative locations. The parameters measured were: physical (temperature), chemical (dissolved oxygen, pH, ammonia, nitrate, and nitrite). The results of physical and chemical parameters indicated that the average value of all study sites was temperature of 30.30 to 30.73 º C, pH 6.5 - 7.0, ammonia of 0.01 to 1.6 ppm, dissolved oxygen of 0.87 to 3.4 ppm, nitrate of 1.4 to 3.2 ppm, nitrite of 0.01 ppm. The results of the identification of bacteria found 4 species, namely: Aeromonas hydrophila, Yersinia enterocolitica, Vibrio anguillarum, Pseudomonas aeruginosa which are pathogenic bacteria on fish. The dominant bacteria found during the study was Aeromonas hydrophila. The results of the study showed that the water quality of “Dumbo” catfish ponds (C. gariepinus) in Bukit Lama and Bukit Baru Ilir Barat 1 Palembang is not recommended for aquaculture.
Study relationship of the length and the weight of Baderbang fish (Barbodes schwanenfeldii) in The Dempok river, Gampingan, Pagak Sub-District, Malang Regency, East Java Ganjar Adhywirawan Sutarjo; Riza Rahman Hakim; Alisatul Amalia
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 4 No. 2 (2021): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v4i2.17964

Abstract

Baderbang fish (Barbonymus schwanenfeldii) is one of Indonesia's endemic fish which has a great opportunity to be cultivated as consumption fish. The success of fish farming is supported by information about the growth patterns in the area of ​​origin of the fish. The study of the relationship between fish length and weight is one indicator to determine the growth pattern of Baderbang fish (Barbonymus schwanenfeldii). This research was conducted with the aim of knowing the morphometrics and growth patterns of Baderbang fish in the Dempok river, in the side of the Pagak village, Malang district. The data analysis was performed, namely the LAM (Liner Allometric Method) data analysis. This model was used to determine the values ​​of a and b. Baderbang fish regression for 6 months is in the range of 1.0558-3.1947, this shows that the growth pattern of Baderbang fish varies every month which includes an isometric growth pattern which is a parallel growth pattern between length increase and increase, growth pattern Positive allometric is a growth pattern with weight gain faster than length gain, while negative allometric growth is a growth pattern with a faster increase in length than weight gain. The long-weight relationship of fish in the Dempok river flow has R2 results ranging from 0.2079-0.9409.
The effect of green betel leave extract (Piper betlel) in feed as prevention of Edwardsiella ictaluri bacterial infection in catfish (Pangasianodon hypopthalmus) Safratilofa Safratilofa; Syahrizal Syahrizal; Edy Barkat Kholidin; Khairul Amsar Sardani
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 4 No. 2 (2021): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v4i2.18082

Abstract

This study aimed to determine the effect of adding green betel leaf extract to feed on the prevention of Edwardsiella ictaluri bacterial infection in catfish. Betel leaf extract was sprayed into the feed according to the research dose, namely Treatment A pelleted feed + 0.3 mL betel leaf extract / 100 g of feed + injected with E. ictaluri bacteria. Treatment B pelleted feed + 0.6 mL of betel leaf extract/ 100 g of feed + injected with E. ictaluri bacteria. Treatment C pelleted feed + 0, 9 mL betel leaf extract / 100 g feed + injected E. ictaluri bacteria control (+) feed pellet + injected E. ictaluri bacteria control (-) pelleted feed + injected with physiological solution of NaCl 0, 9%. Feeding was carried out for 14 days, the challenge test was carried out on the 16th day, for observation of clinical symptoms, and survival rates were observed for 10 days after the challenge test. The results of the study showed that the best survival rate was in treatment C (66.66%) and the lowest was in treatment A (53.33%) with fewer external and internal clinical symptoms among other treatments.
Analysis of organic content on sediment and mangrove density in mangrove conservation area, Mamburungan urban village, Tarakan city, Indonesia Imra Imra; Minawati Minawati; Abdul Jabarsyah
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 4 No. 2 (2021): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v4i2.17518

Abstract

The mangrove ecosystem in Mamburungan Village is known to have two dominant types of mangroves, namely Avicennia sp. and Sonneratia sp. The main factors that cause mangrove growth zoning are the type of substrate and the content of organic matter. This research was conducted through several stages, namely, determining the location, preparing tools and materials, taking sediment, and analyzing mangrove data. The highest organic matter content was found at station I of 2.53 % - 17.81 %, and the highest mangrove density ranged from 0.05 ind m-2 - 0.12 ind m-2 which was dominated by Avicennia sp. More organic matter content was found at a depth of 0 cm.
The effectiveness of cellulolytic bacteria on feeds towards the immune response of Tilapia Dony Prasetyo; Anis Zubaidah; Hany Handajani; Emilio Hudin
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 4 No. 2 (2021): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v4i2.20360

Abstract

Tilapia is one of fishery commodities that is very good to be developed in thecultivation sector. However, the tilapia often incurs with the diseases so thatthe cultivators have difficulty in maintaining the health of the tilapia. One ofthe ways to improve the health is by distributing the cellulolytic bacteriaaddition and blood is one of parameters that used to identify the tilapia’shealth. The research method used was an experimental quantitative methodby preserving the fish and giving cellulolytic bacteria on the feeds for 30 days;then, the bloods ware taken to test the immune system. The parameters usedwere 12 parameters, of which parameters involved of 8 main parameters andsupporting parameters. The conclusion of this research is that the besttreatments are in the treatments of P1 because 4 main parameters out of 8main parameters experience an increasement and 6 main parametersexperience highest increasement from all of the treatments. For the P3, thehighest increasement of main immune system is in the leukocytes andphagocytosis activity. Thus, the fish can prevent the outside attacks.

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