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All Journal BERITA BIOLOGI Omni-Akuatika Indonesian Aquaculture Journal
Andi Sahrijanna
Balai Riset Perikanan Budidaya Air Payau dan Penyuluhan Perikanan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Dominant Water Quality Variables Affecting Plankton Abundance in Traditional Brackish Water Ponds of Tiger Shrimp (penaeus monodon fabr.) in Pasuruan Regency, East Java Province Erfan Andi Hendrajat; Andi Sahrijanna
Journal Omni-Akuatika Vol 14, No 1 (2018): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.171 KB) | DOI: 10.20884/1.oa.2018.14.1.294

Abstract

ABSTRACTIn applying traditional brackish water pond aquaculture of tiger shrimp (Penaeus monodon), plankton is one of water micro organisms that plays an important role as natural food and stability indicator of water or aquatic environment in which life and growth of aquatic organisms depend on water quality variables, both physical and chemical properties. This research objective was to find out the effects of dominant water variables on plankton abundance in brackish-water pond. The research was conducted in traditional brackish water ponds of tiger shrimp in Pasuruan Regency, East Java Province. The research was conducted through direct measurements in the field and also collection of plankton and water samples. Those were then analyzed in the laboratory. Better change to analysis used in this study was regression model analysis was based on the smallest square method. Dependent variables was plankton abundance and independent variables were the water quality variables such as temperature, dissolved oxygen, salinity, pH, total suspended solid (TSS), nitrite, nitrate, ammonia, phosphate, iron (Fe), and total organic matter (TOM). The result showed that range of plankton abundance was 20.0-6,360 individuals/L with average 401.3 individuals/L. There was a significant relationship between plankton abundance and TSS which negatively affected plankton abundance as much as 0.52 or 52%. Based on index values of average dominance, variety, and uniformity, the brackish water pond water or aquatic area in this study was categorized as moderately stable, where plankton genera were well distributed and there was no genus dominating other genus.
KONDISI PLANKTON PADA TAMBAK UDANG WINDU (Penaeus monodon FABRICIUS) DENGAN SUBSTRAT BERBEDA Erfan Andi Hendrajat; Andi Sahrijanna
BERITA BIOLOGI Vol 18, No 1 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i1.3496

Abstract

Plankton is one of water microorganisms that plays an important role as natural food for fish and shrimp and as an stability indicator of water or aquatic environment.The purpose of this study was to determine the composition and abundance of plankton in tiger shrimp ponds using concrete ponds without substrate, concrete ponds using sand substrate and ponds. Sampling of plankton and water quality was carried out from March to July 2016 at PunagaTakalar Experimental Pond at 6 ponds consisted of concrete ponds without 2 subplot of sand (pond A) and concrete pond with 2 subplate sand subplate (pond B) respectively measuring 1,000 m2 and a 2-square-meter plot of 2,500–3,000 m2 (pond C). The results showed that plankton abundance in pond A ranged from 37–349 individuals/L, pond B ranged from 35–1,399 individuals/L and pond C ranged from 54–999 individuals/L. The most common phytoplankton genera in this study was Oscillatoria while for zooplankton is of  Acartia.  The diversity of plankton in ponds A, B and C is included in the community of unstable to moderate biota. In general, the diversity of plankton in pond B is included in the community of moderate biota. The plankton uniformity index in pond A, pond B and pond C is generally close to 1 this indicates that the existence of plankton species in the three ponds is relatively even.      
DIETARY ORGANIC MINERAL INFLUENCES THE GROWTH, FEED UTILIZATION AND VERTEBRAL MINERAL CONTENT OF WILD GOLDEN RABBITFISH, Siganus guttatus Asda Laining; Agus Nawang; Andi Sahrijanna; Muhammad Hafid Masruri; Rachman Syah
Indonesian Aquaculture Journal Vol 16, No 1 (2021): (June, 2021)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.16.1.2021.35-42

Abstract

The positive effect of organic mineral as a dietary mineral source in aquafeed has been recently reported on several species. Nevertheless, the influence of organic minerals on rabbitfish has not yet been determined. The purpose of the present study was to evaluate the effects of different doses of organic mineral on growth and survival, and mineral content in vertebrae of golden rabbitfish, Siganus guttatus. Three diets were formulated containing 0.5%, 1.0%, and 2.0% organic material (OM). A control diet (OM0) did not contain OM. Instead, it was supplemented with an inorganic mineral mixture at a level of 1%. Three hundred fish were randomly selected and distributed in 12 cages to accommodate the four treatments with triplicates. The stocking density was 20 fish per cage. The initial body weight of fish used was 39.2 ± 0.3 g. Fish were fed the test diets twice a day for 150 days. A significant (P<0.05) cubic effect of the treatments was detected on all dependent parameters analysis, excluding feed intake. The influence of dietary OM was not significant for feed intake, indicating that dietary OM did not negatively affect the appetite of rabbitfish. Mineral (Ca, Mg, Zn) content in the vertebrae was significantly improved when dietary OM was included in the diet up to 1% but decreased at the highest inclusion level of 2%. The optimum level of dietary OM to gain the maximum growth rate of rabbitfish was 0.49% as the reflection of the breakpoint of two regressions fitted on specific growth rate (SGR). It is concluded that dietary OM level significantly affected the growth and vertebral mineral content of golden rabbitfish. The study increases our knowledge of the benefit of utilizing dietary OM in the fish diet.
Co-Authors Agus Nawang Asda Laining Erfan Andi Hendrajat Muhammad Hafid Masruri Rachman Syah