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Journal : Research Journal of Life Science

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.
Phytoplankton Composition in White Shrimp (Litopenaeus vannamei) Pond Culture Infected White Feces Disease (WFD) Anjaini, Jefri; Simangunsong, Tohap; Fadjar, Mohamad
Research Journal of Life Science Vol 10, No 1 (2023)
Publisher : Direktorat Riset dan Pengabdian Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2023.010.01.4

Abstract

The aim of this study is to find out the composition and condition of phytoplankton in the white shrimp (L. vannamei) culture inffected by the white feces disease so that one of the indicators of the onset of the white feces disease can be known. This research uses descriptive methods. The observed parameters are the identification of species diversity, abundance, diversity index and dominance index of phytoplankton. The sampling was conducted at three locations, Tuban area, Situbondo area, Lamongan area. The results of the study showed observations in Lamongan area, the total abundance of phytoplankton was 473 cells/L. Situpondo areas abundantity of phytoplankton total was 633 cels/L and Tuban areas abundance was 887 cells/L. In Lamongan area, the diversity index was 1,009. In Situbondo areas diversity Index was 1,013. In Tuban area, diversity indexes were 1,082. In Lamongan area, a dominance index was 0.477. In Situpond area, it was obtained a domination index of 0.544. The genus that dominates the three ponds are Cyclotella and Navicula. At all three locations have high variety of species and abundance of the genus members of the filum Cyanophyta and Bacillariofhyta are detrimental, the genuses that are found are indicators of contaminated waters. The dominance of Cyanophyta (blue-green algae) is also an indicator of the White Feces Disease.