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BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Published by Southeast Asian Regional Centre for Tropical Biology
ISSN : 02156334     EISSN : 1907770X     DOI : http://dx.doi.org/10.11598/btb
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary
BIOTROPIA, The Southeast Asian Journal of Tropical Biology, is a scientific publication of the Southeast Asian Ministers of Education Organization (SEAMEO) – Southeast Asian Regional Center for Tropical Biology (BIOTROP). It publishes articles in the broad areas of tropical ecosystems and environmental impacts, biodiversity conservation and sustainable development and biotechnology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 8 Documents
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Search results for , issue "Vol. 23 No. 1 (2016)" : 8 Documents clear
DIVERSITY OF ACTINOMYCETES FROM EKA KARYA BOTANICAL GARDEN, BALI Shanti Ratnakomala; Puspita Lisdiyanti; Nita Rosalinda Prayitno; Evi Triana; Yulin Lestari; Ratih Dwi Hastuti; Yantyati Widyastuti; Misa Otoguro; Katsuhiko Ando; Endang Sukara
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 23 No. 1 (2016)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.4 KB) | DOI: 10.11598/btb.2016.23.1.504

Abstract

A total of 229 strains of actinomycetes were isolated and identified by full sequence of 16S rRNA gene analysis. Samples consisted of 18 soil and 20 leaf-litter were collected from Eka Karya Botanical Garden, Bali Island, Indonesia. Two isolation methods, i.e. SDS-Yeast Extract (SY) and Rehydration-Centrifugation (RC) were used in this study. Based on 16S rRNA gene analysis, isolated actinomycetes may be grouped into 28 genera. Based on molecular analysis of 16S rRNA gene similarities showed that isolated actinomycetes of Eka Karya Botanical Garden origin is diverse. Analysis on 144 isolates from soil samples, resulted in 24 genera and more than 87 species. Streptomyces is the most dominant genus where 65 isolates or 45% from isolated actinomycetes belong to this genus. It was followed by Actinoplanes (25 isolates =17%). From leaf-littersamples, the total number of 85 isolates may be grouped into 9 genera and more than 41 species. The most dominated genus is Actinoplanes (42 isolates =49%) followed by Catenuloplanes (16 isolates=19%).Keywords: 16S rRNA gene analysis, actinomycetes, biodiversity, Eka Karya Botanical Garden
INTRASPECIFIC VARIATION ON EARLY GROWTH OF Neolamarckia cadamba MIQ. IN PROVENANCE-PROGENY TESTS IN WEST JAVA PROVINCE, INDONESIA Dede J Sudrajat; Nurhasybi Nurhasybi; Iskandar Z Siregar; Ulfah J Siregar; Irdika Mansur; Nurul Khumaida
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 23 No. 1 (2016)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1301.149 KB) | DOI: 10.11598/btb.2016.23.1.439

Abstract

Genetic parameters on early growth of Neolamarckia cadamba, an indigenous species with potential as a source of wood timber, were estimated in open-pollinated provenance-progeny tests at two sites in West Java Province, Indonesia. The experiment was conducted using randomized complete block design with 12 provenances, 105 families and 5 replications of 4-tree row plots. Total height and root collar diameter were measured at the age of 18 months growth. Significant differences among the provenances and families within provenances were observed for height and collar diameter at all sites, except for the collar diameter of among provenances at Parungpanjang site. In general, Garut (GSJ) provenance performed better growth at the two sites than Kualakencana (KKP) and Nusa Kambangan (NKJ) provenances. The evaluation of component of variance at the two sites showed that the provenance effects (ranging from 0.5 to 1.7%) contributed more to total variance than family within provenance effects(ranging from 0.4 to 0.6%). Genetic correlations between height and collar diameter were weak to moderate. Heritability was low for all traits at Limbangan, while at Parungpanjang, the heritability was moderate. Estimation of genetic gain for height and diameter by proportional selected family 0.30 was 0.13 and 0.18 for Limbangan and 0.31 and 0.16 for Parungpanjang. Heritability measurement should be sustained to reach stable value. Stable heritability combined with selection of family and selection within family will improve genetic gain.Keywords: Genetic correlation, genetic parameter, heritability, Neolamarckia cadamba, progeny, provenance, selection
ANTIBREAST CANCER ACTIVITY OF NANOPROPOLIS INDONESIA ON INDUCED MAMMARY GLAND TUMOR BY DMBA IN VIRGIN SPRAGUE-DAWLEY RATS Akhmad Endang Zainal Hasan; Djumali Mangunwidjaja; Titi Candra Sunarti; Ono Suparno; Agus Setiyono
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 23 No. 1 (2016)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (613.285 KB) | DOI: 10.11598/btb.2016.23.1.473

Abstract

The objective of this study was to determine the effect of nanopropolis to cure cancer induced on rat mammary tumor using 7,12-dimethylbenz(a)anthracene (DMBA). After the first tumors appearance, twenty eight rats were divided into seven groups. Group 1, 2 and 3 served as recipient of nanopropolis dosages 8, 32 and 56 µg/mL treatments; Group 4 served asrecipient of propolis dosage of 233 µg/mL treatment; Group 5 served asrecipient of doxorubicin treatment; Group 6 served as recipient of DMBA treatment and Group 7 as normal group (control). The effect of nanopropolis dosage of 32 µg/mL and propolis dosage of 233 µg/mL were similar in reducing tumor size, healing the wounds caused by the tumor and eliminating cancer cells. It turns out that there is a relationship between particle size absorbent materials. The study suggested that nanopropolis with small concentration was very effective to treatrat mammary gland tumors and breast cancers.Keywords: breast cancer, nanopropolis, propolis, Sprague-Dawley rat
ABIOTIC FACTORS INFLUENCING MANTANGAN (Merremia peltata) INVASION IN BUKIT BARISAN SELATAN NATIONAL PARK Jani Master; Soekisman Tjitrosoedirdjo; Ibnul Qayim
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 23 No. 1 (2016)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.21 KB) | DOI: 10.11598/btb.2016.23.1.457

Abstract

Some areas in Bukit Barisan Selatan National Park have serious problems related to Merremia peltata (Family Convolvulaceae) invasion. The abiotic factors influencing M. peltata invasion were investigated in this study. This research compared abiotic factors in three forest locations with different invasion levels i.e.severe, moderate and mild invasions. Abiotic factors measured were percentage of tree canopy coverage, micro climate factors (temperature and humidity), elevation above sea level and physical and chemical properties of the soil surface. In this study, canopy coverage is classified as abiotic factors because it influencesthe intensity of light that can reach the forestfloor. Aposthoc Duncan's Multiple Range Test (DMRT) was employed to determine significant differences (p<0.05) among abiotic factors. In addition, a test of correlation and multiple linear regression were conducted to determine the relationships between abiotic factors and M. peltata invasion. Multiple regression testing showed that canopy coverage significantly (p<0.05) influenced M. peltata invasion. Based on the generated model, a 1% addition of canopy coverage would decrease M. peltata invasion by 2.8%. Multiple linear regression analysis was used to predict the relationship between soil nutrients and invasion. The C/N ratio and P2O5, Ca, Mg and Na concentration significantly (p<0.05) influenced invasion level. Again, based on the generated model, the increase in the C/N ratio aswell as in P2O5 and Ca concentrations were correlated with the reduction of M. peltata invasion; while the increase of Mg and Na concentrations were correlated with the increase of M. peltata invasion. M. peltata invasion in Bukit Barisan Selatan National Park was influenced by opened forest canopy andwas correlated with high concentration of Na and Mg in the soil of the invaded forest areas.Keywords: Bukit Barisan Selatan National Park, invasive species, mantangan, Merremia peltata
POTENTIAL OF MANGROVE SEEDLINGS FOR UTILIZATION IN THE MAINTENANCE OF ENVIRONMENTAL QUALITY WITHIN SILVOFISHERY PONDS Endah Dwi Hastuti; Rini Budihastuti
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 23 No. 1 (2016)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.248 KB) | DOI: 10.11598/btb.2016.23.1.606

Abstract

Silvofishery system has been applied to aquaculture activities and it has been developed in the coastal area of Semarang City, Indonesia. However, information on the initial development of silvofishery ponds concerning the functionality of mangrove seedlings on environmental quality of fish ponds had not been studied. This experiment aimed to determine the environmental conditions of silvofishery ponds and to analyze the effect of seedling stands of mangrove on environmental quality control. The presence of mangrove seedlings caused the decrease of temperature and the increase of salinity. ANOVA showed that mangrove species significantly affected water salinity, while canal width and mangrove species significantly affected turbidity and pH. Regression analysis showed that the height of Rhizophora mucronata had partially significant effect on Total Suspended Solids (TSS), Organic Matter (OM), as well as Nitrogen (N) and Phosphorus (P) concentrations. Diameter of R. mucronata affected temperature. The height and diameter of Avicennia marina affected Dissolved Oxygen (DO). Mixed populations of A. marina and R. mucronata had an effect on water turbidity, while population of only A. marina had a partial effect on water salinity. R. mucronata seedlings had dominant effect on the environmental quality. Mangrove seedlings can be used as environmental quality control within silvofishery ponds to maintain optimal conditions for fish growth. The application of silvofishery in early stage of mangrove seedlings should consider the more abundant plantation of R. mucronata compared to A. marina.Keywords: Canal width, environmental quality, seedling, silvofishery, species composition
ICHTYOFAUNA AT CIJALU RIVER, CILACAP REGENCY CENTRAL JAVA PROVINCE, INDONESIA Agus Nuryanto; Dian Bhagawati; M Nadjmi Abulias; Indarmawan Indarmawan
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 23 No. 1 (2016)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2016.23.1.362

Abstract

Cijalu River is located in Western Cilacap Regency of Central Java Province. The river runs through forestry, housing and farming areas. This condition leads to a prediction that the river has been altered on its physico-chemical characteristics causing the river to be inhabited by a variety of fish species. This study aimed to collect data about fish species inhabiting Cijalu River and its distribution. A survey method has been done with clustered random sampling technique. The river was divided into three different areas, i.e. upper-, middle- and downstreams. Species diversitywas measured as the number of species, while distribution was measured as the presentation of fish species in each site. Nineteen fish species of 10 families were identified from Cijalu River. The 10 families were Anabantidae, Bagridae, Balitoridae, Channidae, Cichlidae, Cyprinidae, Loricariidae, Osphronemidae, Poecilidae and Sisoridae. Cyprinidae was the family having the highest number of species (6 species), followed by Bagridae (3 species), Channidae (2 species) and Osphronemidae (2 species). The remaining respective families were represented by one species. A complex pattern of fish distribution was observed during the study. Glyptothorax platypogon and Channa gacua were only found at the upper-streams, while Anabas testudineus was obtained in downstreams. The other remaining species could be observed either from the middle-to downstreams, or even from upper- to downstreams. Different pattern of species distribution could be caused by physico-chemical characteristics variation from upper to lower parts of the river, especiallywater velocity and substrate types.Keywords: Cijalu River, distribution, diversity, fish
POTENTIAL YIELD OF ACID-ADAPTIVE SOYBEAN PROMISING LINES IN ULTISOLS OF TANAH LAUT REGENCY, SOUTH KALIMANTAN PROVINCE, INDONESIA Heru Kuswantoro
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 23 No. 1 (2016)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2016.23.1.561

Abstract

Soybean is an important food commodity after rice and corn in Indonesia. Until now soybean demand cannot be fulfilled by domestic production, although the chances of fulfillment can be attempted. One of the attempts to increase domestic production is soybean planting in acid dry land that is widely available in Indonesia. The research aimed to obtain soybean lines that are adaptive in acid dry land. A total of 10 soybean promising lines and two check varieties (Wilis and Tanggamus) were grown in acid dry land in Tanah Laut Regency, South Kalimantan Province, Indonesia. Experimental design used was randomized complete block design with four replications. The data were analyzed using analysis of variance and followed by Least Significant Different test. The results showed that the promising lines of SC5P2P3.5.4.1-5 and SC5P2P3.23.4.1-5 achieved production of 1.51 t/ha and 1.48 t/ha, respectively. These yields were higher than Wilis and Tanggamus varieties that reached 1.41 t/ha and 1.13 t/ha, respectively. These two promising lines had the potency to be developed in Tanah Laut Regency, South Kalimantan or other areaswith similar soil characteristics.Keywords: Acid dry land, soybean, Tanah Laut Regency, ultisols
CELLULASE PRODUCTION BY Bacillus subtilis M1 USING PRETREATED GROUNDNUT SHELL BASED LIQUID STATE FERMENTATION Ashish Kr Vyas; Chayanika Putatunda; Joginder Singh; Deepak Vyas
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 23 No. 1 (2016)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2016.23.1.472

Abstract

Groundnut shell which is rich in natural cellulose was assessed as a substrate for production of cellulase enzyme by cellulolytic bacteria. In the present investigation the bacterial isolate Bacillus subtilis M1 was found to be capable of producing high amount of endoglucanase and exoglucanase on alkali treated groundnut shell. The effect of some nitrogen sources, amino acids and Ca++ ionsin the medium containing pretreated groundnut shell were also evaluated. It was observed that 2% substrate concentration, 1mM calcium concentration were optimum for cellulase production. Ammonium nitrate was found to be the best among nitrogen sources tested. Asparagine, tryptophan and methionine were found to be stimulatory for cellulase activity.Keywords: Bacillus subtilis, cellulase, endoglucanase, exoglucanase, groundnut shell

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