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All Journal JFMR (Journal of Fisheries and Marine Research) Jurnal Medik Veteriner Journal of Aquaculture and Fish Health
Utari, Heny Budi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Engineering Environmental Science Veterinary

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Effect of Stocking Density on Stress-Related Gene Expression of Pacific White Shrimp (Litopenaeus vannamei) Infected with Infectious Myonecrosis Virus (IMNV) Nurhudah, Moch.; Baladrat, Nur Komariah; Rahardjo, Sinung; Utari, Heny Budi; Wiradana, Putu Angga
Jurnal Medik Veteriner Vol. 7 No. 2 (2024): October
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmv.vol7.iss2.2024.276-291

Abstract

The stress level of vannamei shrimp (Litopenaeus vannamei) is affected by increased density and several genes are expressed under the condition. This study aimed to determine the expression of genes encoding white shrimp stress after density treatment and the infectious myonecrosis virus (IMNV) challenge test. A completely randomized design (CRD) was carried out with 6 treatment groups, i.e. 3 different stocking density groups without IMNV infection (100, 200, and 400 shrimp/m2) and 3 different stocking density groups + IMNV infection (100, 200, and 400 shrimp/m2). In addition, a shrimp density of 400 shrimp/m2 reported the fastest rate of developing the IMNV virus as seen from the clinical symptoms. The lowest cumulative number of shrimp deaths was at a density of 100 shrimp/m2 and was caused by the IMNV virus confirmed through RT-PCR. Expression of stress-coding genes was divided into upregulated and downregulated characteristics. The upregulated genes were lectin and translationally controlled tumor protein (TCTP), while the downregulated gene was Toll Receptor. The results showed that the expression of genes related to immunity in L. vannamei was upregulated after pathogen challenges such as lectin and TCTP, meanwhile, the Toll receptor gene was downregulated. Further study should also be performed to measure the expression of the three genes in revealing the immune pathways.
EFFECTIVENESS OF BACILLUS SPP. PRESS ON BLUE GREEN ALGAE (BGA) CAUSING OFF-FLAVOR IN CATFISH CULTIVATION Djamil, Moh. Zharfan Abd.; Rukmono, Djumbuh; Utari, Heny Budi
JFMR (Journal of Fisheries and Marine Research) Vol. 4 No. 3 (2020): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2020.004.03.14

Abstract

A problem that often occurred for the actor of catfish cultivation was an indication of smelly mud/dirt/muddy taste (off-flavors). Off-flavors were identified from chemical geosmin compound (GSM) and 2-Methyl Iso-borneol (MIB) produced by Cyanophyceae (Blue Green Algae or BGA) and actinomycetes. This soil odor compounds was soluble in water, into the body of fish through the gill and forwarded to the fatty tissue of fish, so that the fish meat was finally mud-smelly/dirt/musty. Probiotics was an attempt to reduce the compounds that caused off-flavors. The use of probiotics containing Bacillus spp. on feed could degrade organic matter through bioremediation digestive organs and environmental fish farming to minimize the accumulation of organic matter. The reduced of organic matter in waters on total organic odor, has impacted on the percentage of BGA as cause of mud-smelly in waters, especially for species Oscillatoria Sp. In this study, the researchers used Bacillus spp. to treat 10 ml/kg and 20 ml/kg of feed that can indirectly lower the percentage of BGA, Oscillatoria population Sp. and off-flavor in catfish meat as compared to controls.
Relationship Between The Dynamics of Plankton Community Abundance, Total Organic Matter, and Salinity in Intensive Shrimp Farming Systems Munjayana, Munjayana; Ekasari, Julie; Utari, Heny Budi; Wiyoto, Wiyoto; Vinasyiam, Apriana; Mubarak, Ahmad Shofy
Journal of Aquaculture and Fish Health Vol. 13 No. 2 (2024): JAFH Vol. 13 No. 2 June 2024
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v13i2.52715

Abstract

Plankton plays an important role in shrimp cultivation in ponds, both as an indicator of water quality and as a natural food source for shrimp that are raised. The purpose of this study was to measure the relationship between the dynamics of the plankton community, the concentration of total organic matter, and water salinity with the abundance of plankton in intensive shrimp farming systems. The study was conducted on six units of ponds located in Cirebon district, West Java, Indonesia. The ponds were lined with HDPE on each side and plastic mulch at the bottom. Post larvae of shrimp were stocked at an average density of 110 shrimp.m-2 and maintained for 98 days. Water quality samples were collected for daily measurement. Data were analyzed descriptively and then analyzed using Pearson's correlation test and regression. The results of this study showed that during the shrimp rearing period, 65 species of plankton were identified, consisting of Chlorophyta 20%, Cyanophyta 15.38%, Diatoms 26.15%, Euglenophyta 6.15%, Dinoflagellates 4.62%, Protozoa 10.77%, and Ciliates 16.92% with an average density ranging from 7.56x105-19.99x105 cells.mL-1. Chlorella sp. (Chlorophyta) and Oscillatoria sp. (Cyanophyta) were found to be the dominating species in all ponds. Total phytoplankton density tended to be higher during the first 54 days of culture. The results of the correlation and regression tests showed that the composition of plankton, the concentration of total organic matter, and the salinity of the water affected the abundance of plankton in the pond.
Co-Authors A. Shofy Mubarak Apriana Vinasyiam Baladrat, Nur Komariah Djamil, Moh. Zharfan Abd. Julie Ekasari Munjayana, Munjayana Nurhudah, Moch. Putu Angga Wiradana Rahardjo, Sinung Rukmono, Djumbuh Wiyoto Wiyoto, Wiyoto