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All Journal Jurnal Ilmu Pertanian Indonesia Journal of Research and Technology
Flandrianto Sih Palimirmo
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering

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Dinamika Sebaran Bakteri Heterotrofik di Teluk Jakarta Flandrianto Sih Palimirmo; Ario Damar; Hefni Effendi
Jurnal Ilmu Pertanian Indonesia Vol. 21 No. 1 (2016): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (727.512 KB) | DOI: 10.18343/jipi.21.1.26

Abstract

Jakarta Bay is one of the aquatic ecosystems with the highest level of organic pollution in the world. Ecological condition of Jakarta Bay’s water will affect the ecosystem, including the distribution of heterotrophic bacteria. This study aims to determine the dynamics of the distribution of heterotrophic bacteria in the Jakarta Bay. Sampling was done by 4 repetitions during the year of 2013. Primary and secondary data was used in this research. The results showed an abundance of heterotrophic bacteria fluctuate and are relatively high in the area close to the mouth of the river and decreasing abundance in the ocean. The highest abundance obtained at Station 10 with 3,5 × 106 CFU/ml density and the lowest abundance obtained at Station 1 with 1,8 × 105 CFU/ml density. The highest density obtained in October with an average of 1,3 × 106 CFU/ml and the lowest density obtained in July with the average of 3,5 x 105 CFU/ml. Abundance of heterotrophic bacteria have a close relationship with chlorophyll-a
Filogenetik Ikan Ekstremofil Edible Populasi Magelang Menggunakan Gen Cytochrome Oxydase I Jefri Permadi; Ana Rochvita; Rr. Citra Permata Kusuma Anggraini; Flandrianto Sih Palimirmo
Journal of Research and Technology Vol. 8 No. 1 (2022): JRT Volume 8 No 1 Juni 2022
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v8i1.507

Abstract

The Cethol fish was used as a dietary raw material of chips fish by local people in Magelang. The population of the fish was decreased and impacted to fish chips production. The Cethol fish farming could be the one of solution to maintain the stock of this fish as dietary raw material. Nevertheless, the taxonomic status of Cethol fish as the primary information of in Magelang still unclear. Taxonomic status is of organisms is useful to inform biology, reproduction and traits of candidate species will be farmed. The aim of research is revealing the taxonomic status of Cethol fish in Magelang using common barcoding marker Cytochrome Oxidase I (COI) from mitochondrial DNA. The COI gene sequences of Cethol fish from Magelang and other sequence samples from NCBI were used to construct the phylogenetic tree and haplotype network approach to reveal the similarity and clustered of the fish sequence samples. The maximum likelihood and minimum evolution were considered as construction tree method by Kimura 2 parameter statistic model and 1000 bootstrap value. The Median joining statistic model was generated to reveal grouping form and substitution rate of each samples. The phylogenetic tree was constructed from COI gene of Cethol fishes from Magelang are grouped in the same clade and monophyletic with the Poecilia reticulata COI gene from South America as the origin of the fish species. Meanwhile, the P.reticulata from Bengkulu, Sumatera and Java were clearly separated with the samples from Magelang but still in haplogroup with the South America sequence samples. Those result are strengthen the previously notion that the Cethol fish in Magelang is a group species of P.reticulata from South America.
Co-Authors Ana Rochvita Ario Damar Hefni Effendi Jefri Permadi Rr. Citra Permata Kusuma Anggraini