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All Journal AGROLAND: The Agricultural Sciences Journal
nasmia nasmia
majors of Aquaculture, Faculty of Animal husbandry and fisheries, University of Tadulako
Agriculture, Biological Sciences & Forestry

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ADDITION OF DIFFERENT CARBON SOURCES TO TOTAL DENSITY OF BIOFLOK BACTERIA IN THE MEDIA OF TIGER SHRIMP (Penaeus monodon) nasmia nasmia; Abdul Rifai
AGROLAND The Agricultural Sciences Journal (e-Journal) Vol 7 No 1 (2020): June
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/agroland.v7i1.608

Abstract

This research was conducted to assess different carbon sources' addition to heterotrophic bacteria's density in tiger prawn rearing media (Penaeus monodon). The research design used was a completely randomized design (CRD) consisting of 4 treatments and five replications with experimental treatments, namely: A (without giving a carbon source), B (carbon source molasses with a C/N ratio of 15: 1), C (source flour carbon with a C/N ratio of 15: 1) and D (a source of tapioca carbon with a C / N ratio of 15: 1). The test organism used was tiger shrimp PL-21 with a weight of ± 0.005 g, which was maintained with a stocking density of 100 fish / 50 liters of water for 30 days. During the maintenance of shrimp, it is given pellet type feed with a frequency of three times a day, as much as 3% of the shrimp biomass. Providing bacterial activation is carried out every ten days with organic carbon sources every day in the morning and evening. The results showed that the group of microorganisms identified as Bacillus sp. diatoms, ciliates, copepods, Paramecium sp., Synedra sp., and nematodes. Providing tapioca carbon sources resulted in the highest bacterial density (9.0  10⁷ CFU ml ). In comparison, the highest floc volume was produced by treatment with the addition of flour carbon sources (3.65 ml/l).
DIVERSITY AND DOMINANCE OF PLANKTON IN POND WATERS OF SOUTH BANAWA DISTRICT AFTER THE 2018 EARTHQUAKE nasmia nasmia
AGROLAND The Agricultural Sciences Journal (e-Journal) Vol 9 No 2 (2022): December
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/agroland.v9i2.1445

Abstract

South Banawa District is one of the areas in Donggala Regency which has the best prospects in the pond aquaculture sector because this area has the potential to produce milkfish and shrimp. The earthquake and tsunami of 28 September 2018 damaged most of the ponds in South Banawa District. This study aimed to analyze the composition, diversity, and dominance of plankton in fish and shrimp farming ponds in Lalombi and Tolongano Village. The diversity index (H ́) of plankton in the two villages, namely Lalombi, ranges from 0.3040-1.0769 (phytoplankton), 0.4385-0.4610 (zooplankton) and Tolongano, it ranges from 0.2219-1.2318 (phytoplankton), 0-1.3297 (zooplankton). The results of this diversity are included in the low community category, which means that the condition of the plankton community is unstable, so the condition of the community is experiencing environmental disturbances, caused by changes in the structure of the soil texture due to the earthquake and tsunami. The dominance index values ranged from 0.4227-0.9033 for and from 0-0.2778 for Dominance index values close to one mean that under current conditions there is a dominant type of but for the value was close to zero, which means that there was no species dominating the structure of the community. uniformity index values ranged from 0.1562-0.4957 and those for ranged from 0-0.9592.
Co-Authors Abdul Rifai