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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
 78   79   80   81   82 
STRUKTUR POPULASI DAN MASA REPRODUKSI UDANG REGANG WOWOR, DAISY
BERITA BIOLOGI Vol 3, No 3 (1985)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (268.3 KB) | DOI: 10.14203/beritabiologi.v3i3.1355

Abstract

DAISY WOWOR. 1985. Population structure and spawning period of Udang Regang (Macrobrachium sintangense). BeritaBiologi 3(3): 116- 120. Population structure and spawning period of Macrobrachium sintangense was observed in a coast of a small artificial lake, Situ Ciletuh, Ci gombong, West Java, from December 1981 to August 1982. Examination of the class-size frequency indicated the growth rate of body length of the population, and its spawning periods.The mean growth rate of carapace was 3.44 mm per month.Sex ratio was 1:1, significant at the 95% level. The number of the larger males is greater than the females, which indicate the phenomenon of sexual dimorphism.This is due to the differences of growth and the maximum body size attained by the males and females. It was observed that M. sintangense spawns throughout the year, maximum spawning activity occurs between March and June.
EFIKASI LIMBAH SAGU SEBAGAI SUBSTRAT KAYA NUTRISI UNTUK MIKROALGA ISOLAT LIPI11-2-AL002 Susilaningsih, Dwi; Lestari, Sari; Kusnadi, Kusnadi; Hidayat, Topik; Susanti, Hani
BERITA BIOLOGI Vol 13, No 3 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i3.674

Abstract

Microalgae are photosynthetic microorganisms that have potential to produce some useful chemical substances such as carbohydrates, proteins, and lipids. Microalgae are also known exhibited ability as a bioremediation agent. This report is emphasized on analyzing the growth rate and nutritional content of microalgae including carbohydrate, protein and lipid from selected isolates LIPI11-2-AL002 that treated with sago waste. Microalgae were cultivated into hydrolysed sago ?ampas? at the concentration of 0,50, 500,5000 ppm, and medium AF-6 (as control culture) respectively.Therefore selected microalgae isolate was cultivated in series of cultivation volume start from 100 mL until 5 Liter media gradually. Observed parameters were covered cell viability (growth) and proximate content of biomass including carbohydrate,lipid and protein content. The results showed that the carbohydrate and protein content in the algal biomass was increase along the addition of series sago ?-ampas? concentration.The highest concentration of addition the sago ampas is 5000 ppm which is limit for the algal survival. In the highest treatment of sago waste the alga l proximate contents were 261.09 ppm of carbohydrate, 5.12 ppm of protein and 3.61% per of lipid dry weight respectively. In addition, the toxicity effect of fermentation product was not appeared in a toxicity test using gold fish komet(Carassius auratus).
SPATIAL DISTRIBUTION OF DICOTYLEDONOUS WEED ARCHITECTURES IN A SHRUB VEGETATION OF MENGGALA, CENTRAL JAVA SUNARNO, B.; HALLE, F.
BERITA BIOLOGI Vol 3, No 6 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i6.1322

Abstract

B. SUNARNO & F. HALLE. 1986. Distiibusi spasial model arsitektur gulma dikotil di daerah vegetasi semak, Menggala, Jawa Tengah. Berita Biologi 3(6): 253 - 260. Ketapatan dan frekuensi kehadiran model-model arsitektur gulma dikotil di daerah vegetasi semak Menggala, Jawa Tengah telah dipelajari.Model CHAMPAGNAT yang diwakili oleh Mimosa invisa dan Rubus chrysophyllus merupakan model yang nilai kerapatannya paling tinggi (17,97%) dan merupakan pola pertumbuhan yang umum dijumpai di setiap stratum.Semakin tinggi tingkat stratumnya semakin rendah jumlah model dan jumlah individunya. Perbandingan antara gulma masa mendatang dengan gulma masa kini di daerah semak ini, adalah 3 : 2, menunjukkan a,danya proses suksesi yang sedang berjalaa
PENGARUH PEMBERIAN TIGA MACAM MAKANAN BUATAN TERHADAP LAJU PERTUMBUHAN UDANG REGANG MACROBRACHIUM SINTANGENSE WOWOR, DAISY
BERITA BIOLOGI Vol 2, No 7 (1983)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.882 KB) | DOI: 10.14203/beritabiologi.v2i7.1405

Abstract

Salah satu problem utama dalam pemeliharaan kadang ialah pemenuhan kebutuhan akan makanan tambahan bagi pertambahan laju pertumbuhan iLing 1972, Willis et al 1976, Suharto 1977) yang efisien.Makanan tambahan tersebut dapat berupa cacahan daging, makanan kering atau bentuk-bentuk lainnya. Mulai awal September 1979 sampai dengan pettengahan November 1979 telah diadakan pengamatan terhadap laju pertumbuhan udang regang Macrobrachium sintangense (de Man) yang diakibatkan karena pemberian tiga macam makanan buatan yang dibuat dari bahan makanan yang sederhana.Udang tersebut adalah udang air tawar yang umum dijumpai dan dapat dipelihara di akuarium tanpa banyak mengalami kesukaran dan perlakuan (Sabar, 1979).
KINETIKA BIOTRANSFORMASI SUKSINONITRIL OLEH Pseudomonas sp. Sulistinah, Nunik; Sunarko, Bambang
BERITA BIOLOGI Vol 10, No 1 (2010)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1087.924 KB) | DOI: 10.14203/beritabiologi.v10i1.2054

Abstract

Succinic acid (HOOC(CH2)2COOH) is commercial compound that primarily used in food products. This compound also used in textile industry for colouring process, drugs industry, paint, pernist and photography slice. Succinic acid usually produced in industry by chemical reaction and produce cyanide acid as by product. The objective of this research was to study the utilization of Pseudomonas sp. in produce succinic acid and to characterize of involved enzymes. The results showed that the enzyme optimally produce in log phase. The production rate of succinic acid formation was 0,982 mM/ml.h with the decrease of substrate consumption was 1,235 mM/ml.h. The yield of succinic acid during 81 hours fermentation was 81%. The optimum pH, temperature, Km and Vran were 7, 27°C, 90 mM, and 0,0002 mM/ml.h.
ANCAMAN JENIS IKAN ASING LOUHAN TERHADAP IKAN ENDEMIK DI DANAU MATANO, SULAWESI SELATAN Haryani, Gadis Sri; Dina, Rahmi; Samir, Octavianto; Nasution, Syahroma Husni
BERITA BIOLOGI Vol 18, No 2 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6209.567 KB) | DOI: 10.14203/beritabiologi.v18i2.2993

Abstract

Lake Matano is one of the ancient lakes in Sulawesi where some endemic fish species of Telmatherina, Mugilogobius, Oryziasand Glossogobius matanensis lived. The presence of alien species can be on threat for the loss of biodiversity in fresh waters, including endemic fish in Lake Matano. The research aim to review the threat of louhan fish as alien species to endemic fish in Lake Matano. The study was conducted in Lake Matano at five stations in April and August 2015 namely Lawa, Nuha, Petea, Pantai Impian, and Pantai Kupu-kupu. Sam-ples were collected using experimental gillnet with mesh size of ¾; 1; 1¼; 1?2; 2; 2,5; and 3 inches. Fouteen species were found consist of 10 endemic species and red list.These were three of genus Glossogobius, seven species of Telmatherina, and four alien species of the carp (Cyprinus carpio), louhan, gourami (Trichopodus trichopterus), and tilapia (Oreochromis niloticus). The most common species of endemic fish is T. antoniae. Louhan is the result of a hybrid species Amphilopus citrinellus x Cichlasoma trimaculatum. The abundance of louhan is 64 in April and 40 fishes in August, respectively at a time caught. The percentage ratio of louhan to endemic fish was of 8.6% and 18.3%. This indicated that the louhan fish tend to be invasive and certainly threatened endemic fish survival in this lake. The maturity of gonads of louhan is in the level of I - IV that enables the fish to reproduce quickly.
PERBANDINGAN POLA ROMBAK SELULOSA OLEH BEBERAPA JAMUR BASIDIOMYCETES RAHMANSYAH, MAMAN
BERITA BIOLOGI Vol 3, No 9 (1989)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.292 KB) | DOI: 10.14203/beritabiologi.v3i9.1295

Abstract

MAMAN RAHMANSYAH, 1989,Comparative capability of cellulose degradation by Basidiomy cetes fungi.Berita Biologi 3(9) 450 - 453.Cellulosa is natural resource that still found abandon and its can be composted by themselves naturaly to the earth.Basidiomycetes fungi offered to convert those waste organic matter into useful product.Four Basidiomycetes fungi (Auricularia polytricha, Coprinus cinereus, Pleurotus qstreatus and Volvariella valcacea) have been tested to degrade riee straw, Whatman filter paper and cellulose powder. Three replicates of 3 grams of media were inoculated by different fungus land were fermented for 21 days at room temperature (± 28 C). Biodegradation rare was measured by the lost weight basis of media and bioconvertion rate was detected by stating ability of enzime (cellulose), which were extracted from cellulose powder culture,to convert CMC substrat and glucose production.The result shows that C. cinereus has almost 3 to 4 times degrading and converting capability compared to other fungi.
PERBANDINGAN VEGETASI TUMBUHAN BAWAH DI BAWAH EMPAT JENIS TEGAKAN HUTAN TANAMAN DI CANDIKUNING, BALI SIREGAR, MUSTAID
BERITA BIOLOGI Vol 3, No 7 (1987): (Supplement)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (317.486 KB) | DOI: 10.14203/beritabiologi.v3i7.1378

Abstract

MUSTAID SIREGAR. 1987.The comparison of ground vegetation under four forest plantations in Candikuning, Bali. Suppl. BeritaBiologi. 3: 45-50.The ground vegetation under four forest plantations of different species in Candikuning (Altingia excelsa, Manglietia glauca, Agathis dammara, Pinus merkusiij have been investigated by using quadrat method. The results showed that the highest index of similarity was 53,06% between A. dammara and P. merkusii plantations, and the lowest index of similarity was 18,21% between A. excelsa and P. merkusii plantations. The species composition and community stability of these ground vegetations under "each plantation differed. The community of ground vegetation under A.excelsa plantation was more diverse and stable than the others. The ground vegetation under M. glauca, A.dammara and P.merkusii plantations were dominated by herbs, while under A. excelsa plantation were dominated by seedling of trees, that originated from A. excelsa stand and others surrounding tree species.
KERAGAMAN GENETIK, HERTTABILITAS DAN KOEFEIEN VARIASI GENETIK BEBERAPA KARAKTER GALUR MUTAN KEDELAI (Glycine max (L.) MOT.) Ishak, Ishak; Gandanegara, Soertini
BERITA BIOLOGI Vol 4, No 4 (1998)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (296.229 KB) | DOI: 10.14203/beritabiologi.v4i4.1262

Abstract

Analysis of genetic variance, heritability and coefficient of genetic variance were carried out for seven characters of soybean mutant lines in M3 generation, which were conducted at CAIR-Field Station, Pasar Jumat, Jakarta.Results showed that the highest of heritability value about 85.50% was obtained for seed weight, and followed by number of pods,biomass of stem and shelpedpods, root/stem ratio, seed weight/ Zpods ratio, and the lowest heritability value was biomass of root around 26,83% Analysis of coefficient of genetic variance from seven characters of soybean mutants indicated value ranging from 10.00-39,50%.From the result of experiment can be concluded that gamma irradiation produced high genetic variability in M3 generation and contributed positively for crops improvement through breeding programme
PENGARUH VARIETAS TAHAN PADI TERHADAP BEBERAPA SIFAT BIOLOGI WERENG PUNGGUNG PUTIH (SOGATELLA FURCIFERA HORVARTH) DI RUMAH KACA KARTOHARDJONO, A.
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 | Full PDF (212.746 KB) | DOI: 10.14203/beritabiologi.v3i4.1346

Abstract

A. KARTOHARDJONO. 19S6. Effect of resistance rice varieties to some biological charaters of Whitebacked planthopper (Sogatella furcifcra Horvarth) in the green house. Berita Biologi 3(4): 185 -188. The objective of this study was to find resistance varieties and to observe some biological characters of whitebacked pianthopper (wbph) i.e 1 heir preference, number of eggs laid, number of food consume, population development and their survival in the resistance varieties.The study was conducted in the green house, Bogor Res.lnst. for lood Crops in the dry season 1983.Results from this observation showed that the number of wbph to stay,to lay eggs, to consunv".to develop as well as to survive on susceptible varieties are greater than those on resistent varieties.On the susceptible plant the development will be poor on the contrat with their growth on the resistant plant.Therefore, this resistant plant is good to be used to control wbph in the field.

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