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Mohamad Fadjar
Fisheries and Marine Science Faculty, University of Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology

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Histopathological in Gills, Hepatopancreas and Gut of White Shrimp (Litopenaeus Vannamei) Infected White Feces Disease (WFD) Jefri Anjaini; Mohamad Fadjar; Sri Andayani; Ivana Agustin; Ilham Bayu
Research Journal of Life Science Vol 5, No 3 (2018)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (620.851 KB) | DOI: 10.21776/ub.rjls.2018.005.03.6

Abstract

White Feces Disease which is the presence of white feces floating on the surface of the water. Physical disruption of White Feces Disease attacked by exocytes becoming soft. the cause of white defect disease (WFD) is a decrease in environmental quality such as salinity, DO and ammonia. white feces disease is associated with gregarine protozoa in the Apicomplexa phylum. Gregarine parasitic infection from the type of nematopsis that was interacted with Vibrio and Vibrio type bacteria found in white shrimp (Litopenaeus vannamei) which was attacked by white impurities was V. harveyi. This study aims to analyze the presence of gregarine protozoa in the gills, intestines and hepatopancreas of white shrimp infected with White Feces Disease. The method used in this research is descriptive method. Histopathological results showed that there were protozoa (Gregarine) in the intestine, hepatopancreas and gills of white shrimp infected with WFS in 3 different locations and found Aggregated Transformed Microvilli (ATM) that resembled gregarine.
Correlation between Density of Vibrio Bacteria with Oscillatoria sp. Abundance on Intensive Litopenaeus vannamei Shrimp Ponds Heri Ariadi; Mohammad Mahmudi; Mohamad Fadjar
Research Journal of Life Science Vol 6, No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (19.199 KB) | DOI: 10.21776/ub.rjls.2019.006.02.5

Abstract

The abundance of Vibrio bacteria and the presence of an excess Oscillatoria sp plankton type are the main problems that often arise in intensive vanamei (Litopenaeus vannamei) shrimp culture. To examine this problem, the purpose of this study was to determine of model approach interaction between the abundance of Vibrio and Oscillatoria sp with the shrimp growth rate in ponds. This research was conducted with the ex-pose facto design on intensive shrimp culture operations in Bayeman Village, Probolinggo. The results data from field research variable are analyzed using a dynamic modeling system. From the modeling analysis results, showed that the Oscillatoria sp abundance pattern tended to increase over with shrimp culture period as following the pattern of tropical status dynamics by the nutrient increase load of 16.37%/week in ponds ecosystem. Meanwhile, the increase of Vibrio colonies density in ponds continued to increase aggregately by 0.99%/week on nine weeks and 12.5% / week on the last eight weeks of shrimp culture periods. So, it can be concluded that the fluctuations density of vibrio and Oscillatoria sp bacteria in ponds is are bioecological responses from increased nutrient loads and other micromaterials in ponds due to the longer period of shrimp culture.
Co-Authors Heri Ariadi Ilham Bayu Ivana Agustin Jefri Anjaini Mohammad Mahmudi Sri Andayani