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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 2,125 Documents
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INTRODUCTORY SPEECH Lennard Linner
BERITA BIOLOGI Vol 8, No 4(a) (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i4(a).1532

Abstract

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PEMANFAATAN KEANEKARAGAMAN SUMBERDAYA TUMBUHAN OLEH MASYARAKAT BADUY-DALAM DI SEKITAR GUNUNG KENDENG SELATAN, KABUPATEN LEBAK, BANTEN BAGIAN SELATAN Wardah Wardah
BERITA BIOLOGI Vol 6, No 6 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i6.1204

Abstract

Kendeng mountain, where "Baduy-Dalam" community lives is a native reserve area.Observation around "leuweung kolot","leuweung ngora", and "leuweung lembur" near the community area shows how the Baduy-Dalam community controls the sustainability of their forests.These forests are almost untouchable.Information on the biodiversity of plant species in the areas have not known yet.A study on the knowledge of Baduy-Dalam community and utilization of plant resources in Cikeusik,Cikertawana, and Cibeo villages was conducted.The results shows that the Baduy-Dalam tribe had a close relationship with their surroundings; it is seen from their knowledge in managing the environment in order to survive and continuing their living.Among 163 plant species recorded, 81 species are as potential food plants (the largest group), 38 species of medicinal plants, 17 species of building materials, 8 species for ritual, 17 species for fire wood, 4 species handycraf, 3 species economically potential, and 1 species for drinking. There are two species is considered as endangered species namely Arcangelisia Jlava and Alstonia scholaris.
PERTUMBUHAN POPULASI Daphnia sp. PADA MEDIA BUDIDAYA DENGAN PENAMBAHAN AIR BUANGAN BUDIDAYA IKAN LELE DUMBO (CLARIAS GARIEPINUS BURCHELL, 1822) Jadmiko Darmawan
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i1.654

Abstract

The accumulation of organic compound from waste feed and feces from intensive catfish culture can give negative impact to the water quality. On the other hand, the need of live feed for freshwater fish larvae are not sufficient. The aim of this research was to study the effectivity of intensively catfish culture wastewater as a media for Daphnia sp. culture. The experimental research design was completely randomized with five treatments, i.e: Using 5 g/l of chicken manure in the media culture of Daphnia as a control while treatments B, C, and D were using wastewater of intensively catfish culture. The concentration of wastewater of intensively catfish culture was 25%, 50%, 75%,and each treatment was replicated four times. Broodstock of Daphnia sp. used at least 1mm diameter with stocking density 20 ind / liter. Data on population growth of Daphnia sp. obtained were processed using analysis of variance with confidence interval of 95%, followed by least significant difference test (LSD). Furthermore, water quality parameters and density of plankton was examined as supporting data. The water quality data was observed every 4 days and plankton density observation was conducted at the beginning and the end of the study. The result of this research showed that the wastewater of an intensive catfish culture could be used as an alternative media for Daphnia sp. culture. Based on the analysis showed that the different media of Daphnia sp. culture significantly influenced to the population growth of Daphnia sp. The most effective media for Daphnia sp. culture in this research was treatment C and D i.e. 75 % and 100% of waste water of intensive catfish culture.
KOMUNITAS CACING TANAH PADA BEBERAPA PENGGUNAAN LAHAN GAMBUT DI KALIMANTAN TENGAH (Earthworms Community on Several Land uses of Peat Land in Central Kalimantan) Eni Maftu'ah; Maulia Aries Susanti
BERITA BIOLOGI Vol 9, No 4 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i4.2007

Abstract

Peat land has specific character, depends on depth of peat and peat decomposition rale.Earthworms has a role in decomposition,carbon cycle, nutrient redistribution, bioturbation and cycle of nutrient.The aim of the research was to identify the population and diversity of earthworms on peat soil in central Kalimantan and to get species of dominant earthworm in peat land.The research was carried out in several peat land use in Basarang and Kalampangan, Central Kalimantan within dry and rainy season.The collection of earthworms was by using hand sorting method. The result showed that population of earthworms on mulch was higher than the deep peat.Land use influenced population and diversity of earthworm. The population and diversity of earthworms were highest on pineapple (shallow peat soil).The dominant species earthworm in peat land was I'omoscolex corethurus.
STRUKTUR KOMUNITAS GASTROPODA DAN DISTRIBUSI SPASIAL MELANOIDES PLICARIA DI CIBINUA UJUNG KULON D. I. HARTOTO; ISTIYANTI M. MARWOTO
BERITA BIOLOGI Vol 3, No 4 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i4.1341

Abstract

D.I. HARTOTO & RISTIYANTI M. MARWOTO.1986. Community structure and spatial distribution of Melanoides plicaria at Cibinua, Ujung Kulon. Berita Biologi 3(4): 155 - 158. The study was conducted during the dry and rainy seasons of the year 1983 and 1984, on upstream and downstream segment of Cibinua, Ujung Kulon National Park in order to reveal the pattern of distribution and corelation with its habitat structures.The gastropod community was dominated by M. plicaria and most the other species are found in only small number, which is in accordance with the published data of their genera distribution.Distribution of M.plicaria indicated a similar patchy pattern in all season and segment, but suspected due to different mechanisms.There is a clear individual packing phenomenon but do not distinctively shows an aggregation condition.Different corelation pattern between number of individuals per plot and weighted scores olphysical structure is found in all season and segment. Exclusive competition between the predo minant gastropod and the carnivorous and herbivorous fishes is briefly discussed.
Stappia aggregata Gl DAN Alteromonas sp.G2 BAKTERIPENDEGRADASI PHENANTRENE YANG DIISOLASIDARI LINGKUNGAN LAUT Dyah Supriyati
BERITA BIOLOGI Vol 9, No 6 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i6.842

Abstract

Stappia aggregata Gl and Alteromonas sp. G2 are marine bacteria isolated from Kepulauan Seribu waters, Jakarta. These bacteria were isolated using ONR7a media, and forming clear zone surrounding grown colonies after 48 hours, and able to grow on phenantrene as the sole carbon sources. After 4 hours incubation phnenantrene was degraded, and almost 12 hours about 60% of phenantrene was converted. The two strains performed similar biodegradation pattern, but different in growth characteristic.Bacteria Stappia aggregata Gl and Alteromonas sp. G2 grew optimum at 30°C, pH 8 and 3% salinity.
KERAGAMAN BAKTERI PENGHASIL ENZIM PENGHIDROLISIS NITRIL DI PULAU ENGGANO BENGKULU Rini Riffiani; Nunik Sulistinah
BERITA BIOLOGI Vol 16, No 3 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v16i3.2243

Abstract

Potential nitrile degrading microbes have been isolated from marine sponge, marine water and soil in Enggano Island. Nitrilase enzyme has a function in degrading nitrile compund. Nitrilases are important industrial enzymes because of their ability to produce biologically active to degrade enantiomers, such as S-(+)-1-(4’-isobutylphenyl) propionic acid (S-(+)-ibuprofen) and R-(-) mandelic acid. Mandelic acids, which are important as pharmaceutical intermediates, can be produced in enantiomerically pure form by the hydrolysis of their corresponding nitrile. The aim of the study was to explore the diversity of nitrile degrading bacteria in Enggano Island, and their ability to utilize nitrile as a substrate growth. Screening of such microbes were carried out by using microtitter plate method based on growth ability tested by INT (Iodonitrotetrazoliumchloride). Degradation product was determined by High Performance Liquid Chromatography (HPLC). Seventy nine bacteria were able to grow on acetamide, acetonitrile, benzonitrile, adiponitrile, mandelonitrile, succinonitrile, lactonitrile, dan benzilcyanide as the sole source of carbon and nitrogen. Two isolates, YIM 56238 and PO69, have shown to enantioselectively hydrolyze racemic mandelonitrile to mandelic acid. Based on 16S rRNA gene identification, these bacteria have the highest sequence similarity to Microccous endophyticus strain YIM 56238 and Rhodococcus pyridinivorans strain PO69.
KAJIAN BIOLOGI EBONI (Diospyros celebica Bakh.) Soedarsono Riswan
BERITA BIOLOGI Vol 6, No 2 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i2.1483

Abstract

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DIVERSITY AND ECOLOGICAL PERSPECTIVE OF SOIL YEAST IN GUNUNG HALIMUN NATIONAL PARK*[Khamir Tanah Taman Nasional Gunung Halimun: Keragaman dan Perspektif] Atit Kanti; I Made Sudiana
BERITA BIOLOGI Vol 6, No 1 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i1.1167

Abstract

Taman Nasional Gunung Halimun merupakan hutan hujan tropika yang berada di pulau Jawa. Penelitian ini ditujukan untuk mengetahui populasi dari khamir tanah pada berbagai ketinggian tempat (600 m, 1000 m, dan 1500 m) di atas permukaan laut, dan selanjutnya mempelajari peran ekologi dari khamir, dilakukan dengan mengisolasi dan menganalisa karakter fisiologi terutama dalam mendekomposisi selulosa dan hidrolisa fosfat. Khamir yang diisolasi dari tanah dan daerah perakaran dimurnikan dan ditumbuhkan pada media yang mengandung carboxymethylcellulose (CMC) sebagai sumber karbon utama, dan juga ditumbuhkan pada media pivoskaya untuk mengetahui kemampuan pelarutan Ca3(PO4)2. Populasi khamir pada daerah yang atas sedikit lebih tinggi .Sebanyak 23 isolat khamir yang termasuk dalam marga Debaryomyces, Pichia, Rhodotorula, dan Candida diisolasi dari tanah.15 isolat mempunyai kemampuan menghidrolisa selulosa dan 9 isolat mampu melarutkan Ca3(PO4)2. Khamir ditemukan di tanah dan daerah perakaran dan memegang peran penting dalam degradasi senyawa organik dan mineralisasi fosfat di dalam tanah.
SUBSTITUSI TEPUNG BUNGKIL KEDELAI DENGAN TEPUNG DAUN LAMTORO DAN PENGARUHNYA TERHADAP EFISIENSI PAKAN DAN PERTUMBUHAN IKAN NILA Titin Kurniasih; Rosmawati Rosmawati
BERITA BIOLOGI Vol 12, No 2 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i2.528

Abstract

The high cost of fish feed is a main problem in aquaculture industries, and the effort to improve the cost efficiency of feed is the main focus for nutritional research program all over the world. Research is needed to identify less expensive and more sustainable ingredients within fish feeds, while maintaining nutritional quality equal to those based mainly on fish meal and soybean meal. Leucaena leaf meal (LLM) is a potential alternative plant protein source because of its high protein content and low cost compared to soybean meal. The Leucaena leaf was soaked in freshwater for 3 days prior to use. This study was a 60-day trial and aimed to examine the replacement of soybean meal with LLM at various level in practical feed for Nile tilapia. This trial used a Completely Randomized Design which was carried out in 15 aquarias sized of 60 x 60 x 50 cm. Triplicate group of nile tilapia (initial body weight 12,04 ± 0,38 g fish-1 ) were fed five isonitrogenous and isocaloric feeds. The control feed was containing soybean meal, whereas in other four feeds, LLM directly replaced soybean meal with the inclusion level of 8, 16, 24 dan 31 % within the feed formulation. Result showed that the growth performance and feed efficiencies of feed containing 8, 16, 24 and 31 % LLM on the formulation were significantly lower compared to control feed. LLM was able to consumed by nile tilapia although there was a tendency of decrease of the feed consumption with the increase of LLM inclusion. It suggested that the additional treatment is needed to improve the quality of LLM, and to increase the inclusion level of LLM in feed.

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