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INDONESIA
JURNAL BIOLOGI INDONESIA
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 08544425     EISSN : 2338834X     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 847 Documents
 48   49   50   51   52 
LAJU KEHILANGAN DAN KONDISI TERKINI HABITAT BANING SULAWESI (INDOTESTUDO FORSTENII) DI SEMENANJUNG SANTIGI, SULAWESI TENGAH, INDONESIA Riyanto, Awal; Soemarno, Suprayogo; Farajallah, Achmad
JURNAL BIOLOGI INDONESIA Vol 6, No 2 (2010): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v6i2.3158

Abstract

ABSTRACTThe Loss and Recent Condition Habitat of Sulawesian Tortoise (Indotestudo forstenii) atCape Santigi, Central Sulawesi, Indonesia. Unsupervised method of remote sensing wasapplied were evaluated to compute the habitat loss during five years, from 2001 to 2005 usingMultispecW32 software. Meanwhile, the fieldwork was done from 22 to 30 June 2007 todetermine the recent condition of habitat at Sologi hill, a part area of Cape Santigi. During fiveyears (from 2001 to 2005) the forest (habitat) in Cape Santigi was loss making up 60.04 % (rate= 419.25 ha/year). Sologi hill forest was shown as a remaining habitat in Cape Santigi. Vegetationin Sologi hill forest is relatively still good, but is threatened by human activities. We suggesteddeveloping the natural preserve to protect this tortoise, habitat and ecosystem also otherwildlife at Sologi hill.Key words: Indotestudo forstenii, habitat, Cape Santigi, Central Sulawesi, Indonesia.
AKTIVITAS ENZIM SELULASE DARI KHAMIR CANDIDA SP. DAN DEBARYOMYCES SP. YANG DIISOLASI DARI LAHAN GAMBUT TAMAN NASIONAL BUKIT DUABELAS JAMBI Kanti, Atit
JURNAL BIOLOGI INDONESIA Vol 4, No 1 (2006): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i1.3273

Abstract

ABSTRACTCellulalytic Activity of Candida sp and Debaryomyces sp Isolated from Peat Soil ofBukit Duabelas Natural Park, Jambi. Candida sp. and Debaryomyces sp. YeastDegrading cellulose Isolated from Peat Soil in Bukit Duabelas National Park, Jambi. Theobjective of study was to investigate the characteristic of yeast that are able to solubilizecellulose. The yeast was isolated from soil of Tarnan Nasional Bukit Duabelas Jambi.Out of 2 1 ioslates tested 2 isolates Candida sp. (Isolate J I) and Debaryomyces sp. (IsolateJ2) were able to solubilize Carboxymethyl cellulose. Other isolated soil yeasts wereRhodotor& sp, and C~ptococcusp . Medium acidity during cell cultivation variedbetween 5.8 to 7.2. The CMC-ase activity was 5.9 unit and 5.4 unit for isolate J1 andisolate 52 respectively. The Km of isolate J1 and isolate 52 were 7.7 x 10" and 8.4 x 1 0-2(% b/v) respectively. Vmaks of isolate J1 and J2 was 8.28 xlW3 dan 30.66 x lo-) pgglukosa/ml enzyme /minute, respectively.Key words: Cellulolytic Yeasts, Candida sp., Debaryomyces sp., Enzymes Activity,Taman Nasional Bukit Duabelas
VOCALIZATIONS OF MICROHYLA ACHATINA TSCHUDI, 1838 (ANURA: MICROHYLIDAE) FROM THE FOOT HILLS OF MOUNT SALAK, WEST JAVA Kurniati, Hellen
JURNAL BIOLOGI INDONESIA Vol 9, No 2 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i2.175

Abstract

Vocalizations of Microhyla achatina have never been described before. The advertisement calls of six individual malesof M. achatina which originated from the foot hills of Mount Salak, West Java were recorded in September 2011 atair temperatures of 21.0°C-23.4°C. Call components were obtained from 95 calls, consisting of 855 pulses, whichwere then analyzed to obtain the characteristics of sound waves by using software of Adobe Audition 3.0 andSAP2011. Sound waves of M. achatina mainly consists of impulses whose sound spectrum ranges from 1327.5-2789.1 Hz, while the band width of the spectrum is 1461.6 Hz. Results of the analysis showed that the frequency ofthe three pulse-forming elements (dominant frequency, maximum frequency and minimum frequency) was markedlymodulated; frequency modulation was clearly visible in the minimum frequency, which was modulared by 1500 to2700 Hz modulation. The modulation of the dominant frequency and the maximum frequency was not too broad,i.e. between 3000-3500 Hz. Results of linear regression analysis of the dominant frequency versus minimum frequencyand dominant frequency versus maximum frequency showed a strong correlation between the dominant frequencyversus minimum frequency, but a weak correlation between the dominant frequency versus the maximumfrequency.Keywords: vocalization, Microhyla achatina, West Java.
KERAGAMAN GENETIK RUSA SAMBAR (RUSA UNICOLOR), PEMANFAATAN DAN IMPLIKASINYA UNTUK KONSERVASI Wirdateti, Wirdateti
JURNAL BIOLOGI INDONESIA Vol 8, No 1 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i1.3071

Abstract

Genetic Diversity of Sambar Deer (Rusa unicolor) in Utilization and Implications for Conservation. The deer sambar (Rusa unicolor) is one of species of Genus Rusa, was widely distributed in South Asia antil South East Asia. This species in Indonesia was widely distributed in Kalimantan and Sumatra island, but now, the hunting, poaching and habitat loss have reduced its populations drasstically. In order to provide useful information for its conservations. The genetic diversity and population structure of the wild sambar deer was observed by analyzing the 962 bp long of fragment mitochondrial DNA (mtDNA) control region (D-loop)fragment. The result detected, twenty different haplotypes from 22 samples from Borneo and Sumatra. Overall, sambar deer have a relatively high genetic diversity compared to other the ceervid species, with a haplotype diversity (h) 0.9870 and nucleotide diversity (ð) 2.931±0.260%.The genetic distance of Borneo populations (East Borneo) higher compared with Sumatra?s populations that is d = 0.018±0.003 on Borneo and d = 0.009±0.002 on Sumatra. The structure of phylogenetic tree showed that two populations were separate based on the haplotypes differences.Keywords: conservation, control region, genetic diversity, sambar deer.
KAWASAN LINDUNG GUNUNG CIREMAI DAN KEMUNGKINAN PENGELOLAANNYA Noerdjito, Mas; Mawardi, Sonny
JURNAL BIOLOGI INDONESIA Vol 4, No 5 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i5.3214

Abstract

ABSTRACTProtected Area and Conservation Strategy of Ciremai Mountain. The Ciremai MountainWest Jawa as one of the important water catchments area and as water supplier area forMajalengka, Kuningan, Cirebon, Indramayu district in West Jawa provice and part of Brebesdistrict in Central Jawa Province. In order to uphold its function in storing water resources, itis important to understand the protected area of Ceremai Mountain. The protected area wasestablished on its altitude, elevation, and type of soil of about 22,600 ha. 15,410 ha or 68.20%of this area has been recovered, including 8,320 ha of Ceremai Mountain National Park.Reforestation of the ex-pinus area was necessary to increase water reservation. Besides thatCeremai Mountain National Park was needed to be managed with agro forestry.Keywords: protected area, Ciremai, storing water resources
A NEW INDIGENOUS CYANOMETHANE-DEGRADING BACTERIUM ISOLATED FROM GOLD MINING WASTE WATER Sulistinah, Nunik; Munandar, Hendra; Sunarko, Bambang
JURNAL BIOLOGI INDONESIA Vol 15, No 2 (2019): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v15i2.3807

Abstract

ABSTRACT The gold mining wastewater effluent is potential source for isolating cyanides-degrading bacteria, since cyanide is commonly used in gold extraction process in the mining industry. An indigenous bacterial strain LP3, capable of growing on and utilizing of a high concentration of cyanomethane (up to 1.0 Molar), could be isolated from Cikotok gold mine effluent. Based on 16S rDNA sequence, the strain was identified as Rhodococcus pyridinivorans. During the growth on cyanomethane (CH3CN), ethanamide (CH3ONH2) and ethanoic acid (CH3COOH) were detected in the growth media, indicating that nitrile hydratase and amidase involved in the metabolism of the substrate. The involvement of both enzymes on the conversion of cyanomethane was also proved by our study on cyanomethane biodegradation using whole cells of R. Pyridinivorans LP3. Besides cyanomethane, the R. pyridinivorans LP3 could also utilize various aliphatic, aromatic, heterocyclic nitriles and amides as growth substrates. Base on these results, R. pyridinivorans LP3 is expected to be used as a potential candidate for biological treatment for cyanide-containing wastes, although further research is still needed, before being applied on a field scale.  Keywords: biocatalyst, cyanide degrading bacteria, gold mining, Rhodococcus pyridinivorans LP3
DINAMIKA SEL HETEROKIS ANABAENA AZOLLAE DALAM MEDIA TUMBUH DENGAN KONSENTRASI NITROGEN BERBEDA Murti Pratiwi, Niken Tunjung; Ayu, Inna Puspa; Hariyadi, Sigid; Nursiyamah, Siti; Sulaiman, Goran Suryanti Afifah; Iswantari, Aliati
JURNAL BIOLOGI INDONESIA Vol 12, No 2 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i2.2897

Abstract

ABSTRACTAnabaena azollae is an heterocyst Cyanophyceaean as symbiont of Azolla sp. Anabaena azollae is able to fix N2 from atmosphere and transform it into ammonium by its heterocyst cell. This research was conducted to study the influence of different concentration level of nitrogen to the dynamic of Anabaena azollae heterocyst cell. Research was conducted by observing heterocyst cell and variation nitrogen concentration in growing media in 21 days. In each sampling of Azolla sp., heterocyst observation was conducted for every 1000 cells in Anabaena azollae filament colonies. Result showed that media with 0 mg/L nitrogen has the highest number of heterocyst cell. In early observation, there was increasing of ammonium concentration in media 0 mg/L and 5 mg/L. Media without nitrogen addition has generated the highest number of heterocyst cell.Keywords: Anabaena azollae, Azolla sp., heterocyst
ASPEK EKOLOGI IKAN KANCERA (TOR SORO) KUNINGAN DAN PEMATANGAN GONAD MELALUI IMPLANTASI HORMON GONADOTROPIN (HCG) Subagja, Jojo; Sulhi, M.; Asih, Sidi; Haryono, Haryono
JURNAL BIOLOGI INDONESIA Vol 5, No 3 (2009): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v5i3.3181

Abstract

ABSTRACTEcological Aspect and Gonadal Maturation of Tor soro by HCG peletted Implantation. Theexperiment was conducted to determine optimal dosage of Gnrh-a hormon at gonadal maturationof mahseer from Kuningan (Tor soro). The fish was reared in concrete tanks (60m2). Thehormon was used for implantation is HCG (pregnyl). The different dosage of hormon are 250Iu/Kg-1 ; 500 Iu/Kg-1 ; 750 Iu/Kg-1 . The result of this reaserch showed that egg development isMei-Juni (average of egg diameter is 1,4 mm) and Januari (average of egg diameter is 1,35 mm),Other month, the egg diameter was not develop or atresia. Treatment with 500 Iu/Kg-1 dossageshowed the best effect on oosit diameter was at 21 day and 63 day from first oosit diameter of0,9 mm to 1,4 mm.Keywords: Seasonal changes, gonadal maturation, implantation, kancera (Tor soro)
FERMENTASI JALI MENGGUNAKAN BAKTERI SELULOLITIK DAN BAKTERI ASAM LAKTAT UNTUK PEMBUATAN TEPUNG Handayani, Rini
JURNAL BIOLOGI INDONESIA Vol 14, No 1 (2018): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v14i1.3666

Abstract

ABSTRACTJali (Coix lacryma-jobi L.) is a cereal plant. Jali has a high nutritional content. The protein content of jali is greater than sorghum, which is 11 g / 100 g and a high calcium content of 213 mg / 100 g. Cereal fermentation uses two types of microbes; lactic acid bacteria and cellulolytic bacteria. Selection of the best lactic acid bacteria and cellulolytic bacteria with clear zone testing. Isolates in the clear-zone test were isolates of lactic acid bacteria 478, 504, 508, 520, 525, 540, 543, 546, 548 and cellulolytic bacteria isolates A6, A11, A12. Clear cut test results obtained the best isolates 478 and A11 which are used as fermented cereal jelly inoculum. Jali cereals were fermented with four treatments: control, addition of BAL inoculum, addition of cellulolytic bacterial inoculum and addition of BAL mixed inocula and cellulolytic bacteria. Jali cereal fermentation was carried out for two days and sampling was performed to determine the activity of bacterial growth during fermentation, pH and temperature. The fermented Jali cereal is then dried and made flour. Proximate analysis was performed on Jali flour. The results showed that the addition of bacterial cellulolytic inoculum had a higher protein content of 11.64% compared to other treatments, BAL 7, 43%, BAL + BS 6.26% and 5.08% control. Microscopic analysis was performed to determine the effect of fermentation on starch granules. The use of bacterial inoculum in the manufacture of Jali fermented flour can improve the quality and quantity of nutrient content.Keywords: lactic acid bacteria, cellulolytic bacteria, fermentation, Jali cereals.
CARBOXYMETHYL CELLULOSE HYDROLYZING YEAST ISOLATED FROM SOUTH EAST SULAWESI, INDONESIA Kanti, Atit
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i2.2203

Abstract

ABSTRACTThe objective of study was to isolate, identify and characterize the CMC-ase producing yeast from South East Sulawesi, Indonesia.  We isolated 142 strains and obtain 53 strains (37.32%) were CMC-ase producer consist of 26 species residing within 10 genera.  Candida was the most diverse genus consisting of 15 species. It is important to note that several strains residing within this genus could be candidate for new taxa, among others Candida aff. cylindracea PL2W1, Candida aff. insectorum PL3W6, Candida aff. friedrichii  MKL7W3, Candida aff. lessepsii, Candida aff. tenuis.  Five new candidates for novel species of cellulolytic yeast close to Yamadazyma mexicana: were Yamadazyma aff. mexicana (5 strains). Pichia, Pseudozyma, Sporodiobolus, and Sporobolomyces were other cellulolytic yeasts found in South East Sulawesi.  It is obvious, that leaf litter was a good source for cellulolytic yeasts. This CMC-ase producing yeasts dominate this biome, and production of extracellular cellulase is critical strategy for such yeast to survive in cellulose rich ecosystem such as leaf-litter.  This finding would suggest that yeasts play key role on hydrolyzes of cellulose and important resources for sustainable energy research. Keywords: cellulolytic yeasts, secondary forest, South East Sulawesi, leaf-litter 

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