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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,520 Documents
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Literature Review: The Potential of Local Alternative Feeds for Sustainable Pig Farming in Tana Toraja Ruli, Fitha Febrilia; Khalidatunnisa, Besse
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10336

Abstract

Pig farming in Tana Toraja, Indonesia, plays a crucial role in both food security and socio-cultural traditions. However, the rising cost of commercial feed poses a significant challenge for farmers, driving the need for affordable alternative feed sources. This literature review aims to evaluate the potential of locally available alternative feed sources in Tana Toraja, focusing on cassava peels, banana stems, and sweet potato leaves, to provide a sustainable and affordable solution for pig farmers in the region. The study was conducted through a systematic analysis of scientific literature to assess the nutritional composition, benefits, and limitations of these alternative feeds. The results indicate that incorporating these local resources can enhance the nutritional profile of pig feed, leading to improved average daily weight gain and feed conversion ratio. Furthermore, their utilization can promote better gut health, which supports growth performance. Nevertheless, the use of these local feeds faces various challenges, including the presence of anti-nutritional factors, high crude fiber content, and low crude protein levels, which are crucial for pig growth. Therefore, this review emphasizes the importance of using appropriate processing methods, as well as supplementing enzymes and specific compounds to optimize the nutritional value of these local feeds. This review is essential as a comprehensive reference for pig farmers in Tana Toraja to utilize local alternative feeds to overcome high feed costs while supporting environmental sustainability by utilizing agricultural waste.
Utilization of Natural Milk Coagulant in The Processing of Indigenous Dairy Product (Palopo) Agil, Alwi; Bulkaini, Bulkaini; Wulandani, Baiq Rani Dewi; Kisworo, Djoko; Fahrullah, Fahrullah
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.10356

Abstract

The objective of this study is to ascertain the impact of employing natural coagulants, namely eggplant para (Solanum indicum), biduri sap (Calotropis gigantea), and papaya sap (Carica papaya L.), on the chemical properties, antioxidant levels, and organoleptic properties of palopo. The present study employed a Completely Randomized Design (CRD), utilizing three natural coagulant treatments (eggplant, biduri sap, and papaya sap) each at 0.2% of the sample weight, with five replicates. The research variables encompassed pH, water content, ash, crude protein, crude fat (utilizing the proximate analysis method), antioxidant content (employing the DPPH method), and organoleptic values (aroma, taste, colour, texture, and overall acceptance) (using the hedonic method). The findings indicated that the type of coagulant employed exerted a highly significant effect (P<0.01) on the water content, protein and antioxidant levels of palopo, while no significant effect (P>0.05) was observed on pH, fat content, and ash content. The utilization of eggplant (Solanum indicum) as a natural coagulant resulted in a high level of protein in palopo (7.33%), while the application of papaya latex (Carica papaya L.) led to a higher level of antioxidants in palopo (80.05%) compared to other types of coagulants. The incorporation of natural coagulant eggplant parboil can yield palopo that is particularly prized for its optimal texture and palatability. Conclusion: The incorporation of natural coagulant Eggplant (Solanum indicum) in the manufacturing process of palopo ensures optimal chemical quality and acceptance, while papaya latex (Carica papaya L.) contributes the highest antioxidant content, thereby possessing the potential to enhance the functional value of the product.
Identification and Potential of Wood-Decaying Fungi from Poteran Island as a Source of Manganese Peroxidase (MnP) Putri, Arum Maulinda; Kuswytasari, Nengah Dwianita; Prasetyo, Endry Nugroho
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.10368

Abstract

Poteran Island is among the largest islands located within the Sumenep Regency, characterized by lowland agricultural areas with a dry E5 climate, allowing only one planting cycle of secondary crops per year. However, during the rainy season, the region tends to experience an abundance of wood-decaying fungi. This study aims to identify and evaluate the potential of wood-decaying fungi from Poteran Island as a source of MnP using morphological approaches. Screening of MnP-producing fungal isolates was carried out on L-MSM medium supplemented with methylene blue, and the clear zones were observed. The isolates were then identified macroscopically on petri dishes and microscopically using Lactophenol cotton blue, with reference to the book Pictorial Atlas of Soil and Seed Fungi: Morphologies of Cultured Fungi and Key to Species. Based on the morphological examination of 20 fungal isolates, 11 isolates displayed white mycelium, 1 isolate had gray mycelium, 2 isolates showed greenish-white mycelium, and 2 isolates had yellowish-white mycelium. Furthermore, 14 isolates exhibited circular colony morphology, 3 isolates were semi-circular, and 3 isolates were filamentous (filiform) in shape. MnP-producing fungal isolates were screened using L-MSM medium supplemented with methylene blue. Only one isolate, DS 18, demonstrated MnP production potential, indicated by the decolorization of methylene blue on medium. Macroscopic and microscopic analyses confirmed that isolate DS 18 is Trametes versicolor, as it exhibited similar characteristics, including a cottony texture, white color, smooth colony edges, non-septate hyphae, elliptical spores, and hyphae with clamp connections.
Sustainable Agriculture in Indonesia: A Review Article on Strategies, Challenges, and Opportunities from a Scientific Perspective Apriyelita, Annisa; Marviano, Fajri Ramadhan
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.10386

Abstract

Sustainable agriculture integrates ecological, social, and economic aspects to increase productivity without damaging the environment. This study aims to analyze the strategies, challenges, and opportunities for sustainable agriculture in Indonesia. The method used was a literature review of recent national and international journals with thematic analysis. The results indicate that effective strategies include crop diversification, agroforestry, organic fertilizers, biopesticides, water-efficient irrigation, and precision agriculture based on sensors and geospatial data. Key challenges include limited technology, capital, and policy support, while opportunities are driven by consumer awareness, supply chain digitization, and strengthening farmer institutions. In conclusion, the success of sustainable agriculture in Indonesia requires the integration of adaptive strategies, precision technology, and institutional support to strengthen food security and ecosystem sustainability.
Unraveling the Physiological Mechanisms and Bioaccumulation Efficacy of Lemna perpusilla for Heavy Metal Phytoremediation in Yogyakarta River Wastewater Avianto, Yovi; Riyadi, Fajar; Hasibuan, Selvianyi Br; Nababan, Jeremia Gustian
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.10387

Abstract

Heavy metal pollution in Yogyakarta's rivers, caused by textile industries, sand mining, and domestic waste, poses significant environmental and health risks. While conventional water treatment methods face limitations, phytoremediation using Lemna offers a sustainable solution due to its ability to absorb heavy metals efficiently. This study assessed the impact of varying Lemna biomass (control, 20 g, 30 g, 40 g, 50 g per container) on reducing As, Cd, Cr, and Pb in textile, sand mining, and domestic wastewater over three weeks. Heavy metal concentrations were measured using an Atomic Absorption Spectrophotometer (AAS), and Lemna’s growth rates were analyzed using ANOVA followed by Tukey’s HSD. Results showed that Lemna perpusilla effectively adsorbs As, Cd, Cr, and Pb from domestic, sand mining, and batik textile wastewater, with higher biomass leading to improved removal efficiencies. Maximum heavy metal adsorption was observed in batik textile wastewater, achieving over 70% removal for all metals, while domestic and sand mining wastewater showed variable adsorption rates depending on the metal and Lemna biomass. Optimal biomass for growth and adsorption varied: 30 g for domestic, 50 g for sand mining, and 40 g for batik textile wastewater.
Relationship Between Salivary pH and Candida albicans Growth in Elderly with Diabetes Mellitus Putri, Alya Ernita; Qurrohman, Muhammad Taufiq
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10389

Abstract

Candida albicans is the most dominant Candida species found in the oral cavity, this fungus will turn into a pathogen if there is excessive growth on the oral mucosa which is usually called oral candidiasis. Elderly people with diabetes mellitus have a higher vulnerability due to a weakened immune system that supports the colonization of pathogenic microorganisms. Low pH conditions in saliva can facilitate the growth of Candida albicans fungi, thereby causing pathogenic microorganisms to multiply more rapidly. The purpose of this study was to determine the relationship between salivary acid pH and the growth of Candida albicans fungi in elderly people with diabetes mellitus. The study used an analytical observational design, the sample used in this study were 24 elderly patient respondents with diabetes mellitus. From the results of the study, it can be concluded that there is a significant relationship between salivary acid pH and the growth of Candida albicans fungi in elderly people with diabetes mellitus, which indicates that salivary pH can affect fungal colonization in the oral cavity. Acidic salivary pH conditions have the potential to significantly increase the number of Candida albicans colonies, thereby increasing the risk of oral candidiasis in people with diabetes mellitus.
Hidden Impact: Toxic Dinoflagellates Threaten the Sustainability of Pearl Cultivation in Sekotong, West Lombok, Indonesia Mujib, Abd. Saddam; Dermawan, Awan
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.10397

Abstract

The Sekotong waters, which serve as a pearl aquaculture center, heavily rely on good water quality but face unseen threats that could jeopardize the sustainability of the pearl farming. This study aims to examine the presence and distribution of five major dinoflagellate genera Dinophysis, Gymnodinium, Prorocentrum, Ceratium, and Protoperidinium in the waters of Sekotong, West Lombok, which is both a conservation area and a center for pearl aquaculture. This research is crucial given the potential impacts of harmful dinoflagellates on marine ecosystems and the sustainability of pearl production. Sampling was conducted at four stations, revealing variations in dinoflagellate abundance. Station 1 was dominated by Protoperidinium (approximately 15%), followed by Gymnodinium (around 11%) and Dinophysis (about 15%). At Station 2, only Prorocentrum was observed with an abundance of around 24%, whereas Station 3 was mainly inhabited by Ceratium (15%) and Gymnodinium (13%). Station 4 was characterized solely by Ceratium with a low abundance of approximately 4%. Oceanographic conditions such as temperature, salinity, nutrient levels, and current patterns are believed to influence the distribution and abundance of these dinoflagellates, supporting various ecological strategies including photosynthesis, mixotrophy, and heterotrophy. The presence of toxin-producing genera like Dinophysis and Gymnodinium poses a risk of harmful algal blooms (HABs), which can adversely affect the ecosystem and pearl farming activities. Therefore, the findings emphasize the importance of continuous monitoring and effective management to prevent the negative impacts of these harmful dinoflagellates. This study provides a strong scientific basis to support conservation efforts and enhance the sustainability of pearl aquaculture in Sekotong, a region with significant ecological and economic value.
Vegetation Analysis and Tree Architecture Model at the Kupang State Agricultural Polytechnic Arboretum Nababan, Badia Roy Ricardo; Nufus, Mitha Rabhiyatul; Takoy, Darmawana
Jurnal Biologi Tropis Vol. 25 No. 4a (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4a.10421

Abstract

The Kupang State Agricultural Polytechnic Arboretum is a vegetation collection located in an area with arid and semi-arid climate characteristics. Understanding the vegetation composition and tree architecture model is important information for effective arboretum management and conservation planning in the East Nusa Tenggara region. This study aims to analyze the vegetation composition to determine the Importance Value Index (IVI) at various growth phases and to identify the dominant tree architecture models in the Kupang State Agricultural Polytechnic Arboretum.Vegetation data collection was conducted using the line transect method, covering the seedling to tree phases. The data were analyzed using INP calculations, while tree architecture models were analyzed descriptively and exploratively based on tropical tree architecture references. The results of the vegetation analysis showed that dominant species such as Kirinyuh (Chromolaena adorata), Gewang (Corypha utan), Gamal (Gliricidia sepium), and Jati Putih (Gmelina arborea) had the highest importance values in each growth phase, indicating high adaptability to dry land conditions. The most commonly found tree architecture model was the Troll Model (in 9 of 12 species), characterized by a broad and leafy canopy. The Attims and Rauh models were also found in several species with specific ecological functions. The dominance of adaptive species and the Troll Model indicate that the arboretum functions optimally as shade, windbreak, and erosion control, which are essential for ecological functions in drylands. This study provides important ecological baseline data for conservation management and sustainable green open space development in the semi-arid region of East Nusa Tenggara.
Preferences of Javan Langurs (Trachypithecus auratus) for Food Trees as a Foraging Behavior Marker in the Coban Pelangi Area, Malang Regency Fudianto, Achmad; Rohman, Fatchur
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.10453

Abstract

The Javan lutung (Trachypitecus auratus) is known as one of the endemic primates of Java, Bali, and Lombok, whose existence is classified as vulnerable. Anthropogenic practices such as illegal wildlife trade, hunting, and habitat reduction stimulate changes in habitat use decisions, foraging strategies, and restrictions on daily activities. The objectives of the study include: (1) analyzing the vegetation that constitutes the Javan langur's diet, (2) identifying the Javan langur's preferences for food trees as indicators of foraging behavior, and (3) analyzing the daily feeding behavior of Javanese langurs in the Coban Pelangi area. The results of the research show that there are 15 plant species from 6 families with the highest INP found in Calliandra calothyrsus with a value of  87.22%, while there are 5 types of plants that serve as food sources, with Phyllantus reticulatus being the highest preference at 6,15 (w>1), Ficus sp. 3, Ficus kurzii, Calliandra calothyrsus, and Dendrocnide stimulans. The feeding behavior of the Javan langur as a daily activity is carried out by grabbing leaf stalks with their hands, stripping them, and then eating the young leaves for 2-5 minutes while sitting.
Stroke Hemorrhagic et Causa Ruptur Aneurysma Anterior Communicating Artery: Case Report Meilani, Ni Komang Putri; Kamelia, Luh Putu Lina; Permasutha, Made Bayu; Puspitayanti, Ni Putu Leony; Soeka, Luh Made Anindita Adristi
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.10454

Abstract

Bleeding in the brain is life-threatening. Two types of bleeding are subarachnoid hemorrhage (SAH) and intraventricular hemorrhage (IVH). SAH is defined as bleeding that occurs in the subarachnoid space, which is the space between the arachnoid membrane and the pia mater. Meanwhile, IVH is bleeding that occurs within the brain's ventricular system, which is a cavity containing cerebrospinal fluid (CSF). The incidence of SAH is quite high, reaching 8.09 million cases out of all stroke cases. Meanwhile, IVH only accounts for 0.31% of total stroke cases. The purpose of this study is to document medical cases as a form of the latest clinical knowledge. The method used is qualitative with a case study design to analyze the management of hemorrhagic stroke patients at the RSUD Buleleng. The patient underwent a neurological physical examination in the form of a meningeal sign examination, which showed positive neck stiffness, Kernig's sign (-), and Brudzinski's sign I-IV (-). Eye examination revealed that both pupils were 3 mm in size, with light reflexes +/+. The patient did not exhibit any weakness or paralysis on one side of the body. Based on clinical symptoms and findings from radiological examinations and DSA, the patient was diagnosed with Hemorrhagic Stroke + Intraventricular Hemorrhage due to rupture of the anterior communicating artery aneurysm segment A1 with daughter SAC. The patient was administered Loading Normal Saline 0.9% 18 tpm, Oxygen 3 lpm, loading Mannitol 200 mL followed by 100 mL 6 times tapering off, Citicoline 2x250 mg intravenously, Omeprazole 2x40 mg intravenously, Painless 2x400 mg, and Dexamethasone injection 2x1 ampoule. as initial treatment.

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