Biotropia
Journal published by SEAMEO BIOTROP
Biotropia
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.
All papers submitted for publication in Biotropia are evaluated by subject matter experts and go through editorial revision. Authors may suggest names of potential reviewers. Biotropia uses anonymous reviewing, ... see more
All papers submitted for publication in Biotropia are evaluated by subject matter experts and go through editorial revision. Authors may suggest names of potential reviewers. Biotropia uses anonymous reviewing, ... see more
Subjects: Life & Biological Sciences, Environmental Science & Forestry
Accreditation: Certified International Journal (Grade 1) by Ristekdikti with Accreditation No. 36b/E/KPT/2016.
Articles
1–50 of 330 results.
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Response to Humic Acid Addition Into Feeds with Heavy Metal Content Made of Green Mussels on Growth of Asian Seabass Download• 2019
English
High in nutrients, green mussel Perna viridis can be used for fish meal replacement in fish diet, yet they contain heavy metals. The addition of Humic Acid (HA) in animals feed brings many advantages,... -
• 2019 Indonesia
English
Cervical cancer is second rank cancer in female cancer incidence all over the world and the strategy therapy against this disease is addressing cancer cells without endanger normal cells. Discovering ...
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• 2019
English
Goats and sheep are valuable livestock as they produce food, such as meat, milk, fleece, and other products. In addition, goats and sheep are important both for agriculture and biomedical research. Ev...
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Agrobacterium-mediated Genetic Transformation Of Seaweed Kappaphycus Alvarezii Using Gα Gene And Callus Cultures Download• 2019
English
Cottonii seaweed (Kappaphycus alvarezii Doty) is one of the most important commercial sources of carrageenans which are widely used in the pharmaceuticals and the food industry. A problem in the culti...
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Antimicrobial and Herbicidal Activities of the Fruticose Lichen Ramalina From Guimaras Island, Philippines Download• 2019 Philippines
English
Lichens, a unique symbiosis between two or three organisms, are known to produce metabolites that can be tapped as biopesticides for agriculture. In this research study, the fruticose lichen Ramalina ...
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Enrichment of Recombinant Growth Hormone in Diet Containing Different Levels of Protein Enhanced Growth and Meat Quality of Striped Catfish (Pangasionodon Hypophthalmus) Download• 2019
English
Application of fish recombinant growth hormone (frGH) has been known as one of the applicable method to improve growth performance of culture fish.The purpose of this study was to evaluate the effect...
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Amomum Compactum Soland Ex Maton Addition as Essential Oil Source and Its Effect on Ruminal Feed Fermentation by in Vitro Analysis Download• 2019
English
Essential Oil (EO), as feed additive, has positive effect on ruminal feed fermentation by increasing feed efficiency and reducing methane production. This research was done to studied java cardamom (A...
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Management of Aflatoxigenic Strains Via Vapor and Contact Treatment with Essential Oil Obtained From Myristica Fragrans Download• 2019
English
This study evaluated the inhibitory effects of essential oil extracted from Myristica fragrans Houtt (nutmeg) by hydrodistillation on mycelial growth, sporulation, and aflatoxin B1 production of Asper...
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Molecular Cloning of Gonadotropin Hormones I (Gth-i) and II (Gth-ii) Genes in the Hard-lipped Barb (Osteochillus Hasseltii) and the Effect of Photoperiods on the Genes Expression Download• 2019
English
Photoperiods is one of the factors that influence regulation on endocrine gland in producing hormones necessary for gonadal growth and development, gametogenesis and reproductive cycles in fish reprod...
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The Histological Description of Intestine of the Epinephelus Lanceolatus Fuscogutattus Administered with Simplicia Papaya Download• 2019
English
Fish intestine and growth histological descriptions constitute the parameters which are a function of internal and external condition. The external factors include water quality, feed quality and feed...
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• 2019 Indonesia
English
The carbon conservation program in mangrove ecosystem shows the carbon sequestration and sinker which gives a positive impact for mangrove sustainability. The carbon conservation of mangrove ecosystem...
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A Dietary Microcapsule Based on Single Cell Protein (Spirulina Platensis) for Milk Fish, Chanos-chanos, Larvae Download• 2019
English
The purpose of this study was to evaluate differences between spirulina-based microcapsules and commercial diets on absolute, daily and specific growth and survival rates of milkfish larvae. Spirulina...
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• 2019 Australia • Fiji • Indonesia • Papua New Guinea • Solomon Islands • 1 more
English
Calamus vitiensis, previously known to occur only in Papua New Guinea, Australia (Queensland), the Solomon Islands, Vanuatu, and Fiji is newly reported from Batudulang, a mountainous area in West Sumb...
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Placement Of Syzygium Boerlagei (Merr.) Govaerts (Myrtaceae) Confirmed With Atpb-rbcl Intergenic Spacer Download• 2019
English
We present a molecular analysis to determine whether Eugenia boerlagei Merr. (Myrtaceae) is to be included in Eugenia or Syzygium based on sequences of cpDNA fragments namely atpB-rbcL intergenic spac...
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Fungal Infection in Stored Arabica Coffee (Coffea Arabica) Beans at Various Stages of the Delivery Chain in South Sulawesi Province Download• 2019 Brazil • Indonesia • Niger • Vietnam
English
Indonesia has retained its status as the world's fourth largest coffee producer after Brazil, Vietnam and Columbia, in which one of its well-known coffee is originated from Toraja region, South Sulawe...
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Prevalence of Mcr-1 Colistin Resistance Gene in Escherichia Coli Along Broiler Meat Supply Chain in Indonesia Download• 2019 Indonesia
English
Colistin is the last drug choice for dealing with carbapenem-resistant Enterobacteriaceae; therefore, this drug is very crucial for human health. The discovery of a plasmid-mediated colistin resistanc...
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Genetic Variation Of Wild Musa Acuminata Colla From Indonesia Based On Rapd And Issr Markers Download• 2019 Indonesia
English
Musa acuminata Colla is one of the progenitors of cultivated bananas today, and Indonesia is the center of origin and diversity of M. acuminata. Genetic variation of wild M. acuminata from Indonesia ...
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The Effect of Salinity on Survival, Growth and Immunity Rate of Sea Cucumber (Holothuria Scabra) Juveniles Download• 2019
English
Sea cucumber is a stenohaline and osmoconforming organism with a low level of tolerance to salinity change. Salinity of the medium is one of the physiological factors that affect the growth and surviv...
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Enzymatic Hydrolysis of Hutan Jati Variety Cultivar Tacca (Tacca Leontopetaloides) Starch by the Brevibacterium SP. α-Amylase and Its Potential for Production of Maltooligosaccharides Download• 2019
English
The aim ofresearch are extraction and physico-chemicalcharacterization, determination of the optimum conditions for enzymatic hydrolysis of starch from Tacca tuber to produce maltooligosaccharides, an...
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Burn-down Effect and Chlorosis of Transgenic and Conventional Corn Varieties Caused by Glyphosate Potassium 660 G L-1 at Different Times of Application Download• 2019 Indonesia
English
The purpose of this experiment was to quantify the burn-down effect and chlorosis due to different times of herbicide glyphosate potassium 660 g l-1 application. The experiment was performed at Agricu...
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Population Structure of Hoyas Spp. (Apocynaceae: Asclepiadoideae) at Bodogol Nature-conservation Education Center, Indonesia Download• 2019 Indonesia
English
Hoya is a species of flowering plants. In 2011, eight Hoya species were recorded at the Bodogol Nature-Conservation Education Center (BNCEC), Bogor, Indonesia. The purpose of this study is to analyze ...
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Random Amplified Polymorphic Dna (Rapd) Profiles of Several Isolates of Ganoderma Spp. From Banyumas, Central Java, Indonesia Download• 2019 Indonesia
English
A study on the RAPD profiles of several isolates of Ganoderma spp. from Banyumas Regency, Central Java, Indonesia and their genetic inter-relationship based on RAPD markers was conducted using a surve...
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• 2019
English
The comparative heterogeneity of the detailed, in-parallel protein composition data analysis for wide varieties of birds' egg white samples has not yet been fully defined. The main object of this rese...
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The Effects Of Red Yam Flour (Ipomoea Batatas L.) On The Growth, Survival Rate And Skin Color Of Goldfish (Carrasius Auratus) Download• 2019
English
This study evaluated the effects of commercial diets supplementedwith 0%, 3%, 6%, 9%and 12% red yam flour (Ipomoea batatas L.) on the growth, survival rate and skin colour of goldfish (Carrasius aurat...
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Light-color-induced Changes in Fatty Acid Biosynthesis in Chlorella SP. Strain Ks-ma2 in Early Stationary Growth Phase Download• 2018
English
Optimization of light supply remains a critical issue in microalgae biotechnology. The impacts of light color on fatty acid production and biosynthesis in microalgae are poorly understood. The aim of ...
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• 2018 Indonesia
English
Natural mortality of trees is extremely variable due to the uncertainty and complexity of the functioning of forest ecosystems. To overcome this uncertainty, a two-step mortality model was applied for...
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Isolation, Characterization and Molecular Identification of Myxobacteria From Two Outermost Islands of Indonesia Download• 2018 Indonesia
English
Myxobacteria are Gram negative bacteria commonly found in soil, tree bark, and decay wood. These bacteria have unique social behaviors by forming fruiting bodies, moving by gliding motility and preyin...
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Identification Of Endophytic Bacteria From Curcuma Zedoaria Based On Protein Profile Using Maldi-tof Mass Spectrometry Download• 2018 Indonesia
English
Valid identification of microorganisms is a vital information to establish culture collections. Currently, molecular approach based on 16S rDNA is widely used for bacterial identification. This approa...
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• 2018 Indonesia
English
Biological Oxygen Demand (BOD) is generally used for determining the water pollution level in water bodies. Estuary is a semi-enclosed water that can be polluted from land areas or rivers. This resear...
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Jabon (Anthocephalus Cadamba Roxb) Potency for Remediating Lead (Pb) Toxicity Under Nutrient Culture Condition Download• 2018
English
Information on metal adaptation of plants is necessary to understand the mechanism of heavy metal, including lead (Pb), remediation mediated by forest plants in contaminated land. This study aimed to ...
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Growth Performance and Enzyme Activities in Catfish [Pangasianodon Hypophthalmus] Fed with Water Hyacinth-based Diet Download• 2018
English
An alternative subtitution of pollard as an imported feed ingredient is a neccesity and one of the potential ingredients is water hyacinth (Eichhornia crassipes). This study was conducted to evaluate ...
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Effects of Rainfall on the Population of Shrimps Penaeus Monodon Fabricius in Segara Anakan Lagoon, Central Java, Indonesia Download• 2018 Indonesia
English
Segara Anakan Lagoon (SAL) is widely known as traditional fishing ground for many fisheries organism and is located at an area in Central Java with a high rainfall rate. The objectives of this study ...
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• 2018 Indonesia
English
The main effects of human activities on the environment result in land use and land cover changes. Land over exploitation and development activities in West Kalimantan of Indonesia necessitated the fo...
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Enzyme Activities in Relation to Total K, Ca, Mg, Fe, Cu, and Zn in Oil Palm Rhizosphere of Tropical Peatland in Riau, Indonesia Download• 2018 Indonesia
English
Enzyme activity could be used as a peat decomposition indicator in oil palm rhizosphere of peatland. Oil palm plantation management requires fertilization in the rhizosphere as nutrient for oil palm g...
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Assessment Of Seedling Abundance, Survival And Growth Of Two Dipterocarp Species In Peat Swamp Forests Of Brunei Darussalam Download• 2018 Brunei
English
Dryobalanops rappa Becc. and Shorea albida Sym. are Bornean endemics of high conservation value and increasingly threatened by anthropogenic disturbances. In-situ study of seedling abundance and growt...
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Resistance Against Aeromonas Hydrophila Infection and Growth of Second Generation (F2) African Catfish [Clarias Gariepinus] Using Selected Molecular Markers Download• 2018
English
Aeromonas hydrophila is a pathogenic bacteria that causes mass mortality in catfish. In previous studies, specific pathogen resistant (SPR), A. hydrophila-resistant African catfish first generation (F...
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Flora Diversity, Composition And Ecology In Besiq Bermai Tropical Forest Of Damai District, East Kalimantan Download• 2018 Indonesia
English
Besiq Bermai Forest is part of Kalimantan forests known for vast plant diversity. The present study aimed to investigate flora diversity, composition, and ecology in Besiq Bermai Forest to support the...
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Fire Spot Identification Based on Hotspot Sequential Pattern and Burned Area Classification Download• 2018 Indonesia
English
Indonesia has the world's largest tropical peatlands of about 14.9 million hectares that have important life support roles. However, fire frequently occurs in peatlands. According to experts and field...
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Benthic Diatoms in the Ping River and Its Tributaries in Mae Taeng District, Chiang Mai Province, Thailand Download• 2018 Thailand
English
Mae Teang District is home to many tributaries of the Ping River. Each tributary is associated with different geographical characteristics and uses. This study is the first report on benthic diatom di...
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Soil Microbial Population And Soil Enzyme Activity On Various Reclamation Area Of PT Bukit Asam In South Sumatera Download• 2018 Indonesia
English
Open mining activities result in a decrease in microbial biomass and a negative impact on soil fertility. Soil microbes play a role in the decomposition of soil organic matter and nutrient cycles thro...
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Molecular Cloning Of Vitellogenin Gene In The Hard-lipped Barb (Osteochillus Hasseltii C.v) And The Effect Of Photoperiods On Gene Expression Download• 2018
English
Fish reproduction is influenced by photoperiods through regulation on endocrine gland activities in producing hormones needed for gonadal growth and development, gametogenesis and reproductive cycles....
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• 2018
English
The growth strategies of plant species show the ecological role which is reflexed by their adaptation to environments and competitiveness. Those are essential in the study of the revegetation effectiv...
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Genotypic And Phenotypic Characterization Of Alcaligenes Javaensis Jg3 Potential AS An Effective Biodegrader Download• 2018
English
Utilization of glycerol by lipase producing bacteria offers great benefits for fat and oil waste degradation and waterwaste treatment. Nevertheless, there have been lack of reports about the availabil...
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Soil Characteristics Under Intensified Shifting Cultivation for Upland Rice Cultivation in Upland Sabal, Sarawak, Malaysia Download• 2018 Malaysia
English
Shifting cultivation practices are regarded as the most important agricultural land-use in the marginal uplands of Sarawak for the livelihood of the rural communities. In response to various socio-eco...
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Phenotypic and Molecular Characterization of Multishoots Development in Transgenic Phalaenopsis Amabilis (L.) Blume Harboring 35s::knat1 (Knotted-like Arabidopsis Thaliana 1) Download• 2018
English
Phalaenopsis amabilis (L.) Blume is one of Indonesian natural orchid which has an aesthetic flower and possesses high economic value. The low multiplication rate and long periods of life cycle are the...
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The Peculiar Petiole Calluses Growth of Amorphophallus Titanum (Becc.) Becc. Ex Arcang and Its Implications for Ex Situ Conservation Efforts Download• 2018
English
Amorphophallus titanum is a plant species endemic to Sumatera. Land degradation and illegal capture of hornbills (a distributor of A. titanum seeds) is leading to potential extinction of A. titanum in...
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Production And Characterization Of Biosurfactants Produced By Pseudomonas Aeruginosa B031 Isolated From A Hydrocarbon Phytoremediation Field Download• 2018
English
The biosurfactants are used by several industrial sectors such as petroleum, agriculture, food production, chemistry, cosmetics, and pharmaceuticals. Because of their hydrophobic and hydrophilic moiet...
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Isolating Microsatellite From Amorphophallus Variabilis and Its Application for Population Study in Dramaga Conservation Forest, Indonesia Download• 2018 Indonesia
English
Amorphophallus variabilis Blume, a member of Araceae, is a fleshy perennial tuber crop endemic in Java Island, Indonesia. The plant produces white edible corm; and it was used as food during famine ti...
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Optimization and Efficiency Improvement of In‐house Immunoaffinity Column Ku-af02 for Aflatoxin Detection Download• 2017 Thailand
English
In-house immunoaffinity column for aflatoxins (AFs) detection is firstly developed by Kasetsart University since 2011 i.e. the first IAC prototype, KU-AF01. Detection of aflatoxin B1 (AFB1) up to 200...
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• 2017
English
Spatial planning has already been stipulated in Ciliwung Watershed, but its implementation is often not in line with the rapid development activities. To fulfill space demand, agricultural and forest...