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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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Carbon Storage Estimation in the Sungai Buluh Peat Forest Reserve, Mandahara Ulu District, Tanjung Jabung Timur Regency Dinanty, Fawwaz; Nursanti, Nursanti; Nahlunnisa, Hafizah; Nazri Yandi, Wahyu
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
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.v25i3.8982

Abstract

Indonesia has the third-largest tropical forest area in the world, making it a key player in global climate change mitigation efforts. This study aims to identify tree species and estimate above-ground carbon (AGC) stocks in the Sungai Buluh Peat Protected Forest, Jambi. The research employed a descriptive quantitative approach using permanent plot methods and allometric equations across 30 plots measuring 20×20 meters. Data collected included tree species, diameter, and height, which were then analyzed to calculate biomass and carbon stocks. The results identified 1,140 individuals from 26 species, with Mangifera parvifolia, Dyospyros siamang, and Madhuca modleyana being the most dominant. The stand volume reached 426.11 m³/ha, while the estimated AGC was 173.96 tons/ha. The majority of the carbon stock was contributed by the tree strata, accounting for more than 73%. These findings highlight the importance of conserving peatland forests as long-term carbon reservoirs.
Characteristics of Whey from Dangke Cow Milk Waste with Coagulant Lime Extract Bandrio, Dhany; Windyasmara, Ludfia
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.v25i4.9182

Abstract

Local dairy products are one of Indonesia's traditional food assets that can still be developed in terms of economy, culture, and nutritional value. This coagulation process is usually carried out by adding natural coagulants such as acetic acid or papaya latex, and in this study lime extract acts as a differentiator that will induce milk protein to coagulate into a liquid called whey and a solid mass (curd) called dangke. The materials used include 500ml of cow's milk, and 15g of coarse salt. The experimental method used using a completely randomized design (CRD) is a research methodology used with P0 treatment without the addition of lime extract, P1 0.5ml, P2 1ml, P3 1.5ml, and P4 2ml. The dangke cheese treatment was determined randomly, and each treatment had 3 replications so that there were 15 experimental units. The study found that although soluble protein had no significant effect, pH, total acid, and viscosity of dangke whey of cow's milk produced with a coagulant made from lime extract. have a very significant effect. The use of whey can reduce the possibility of environmental pollution by reducing liquid waste from the dairy processing sector, such as dangke.
Production Performance of Meat and Eggs of Domestic Quail: Potential and Utilization as Genetic Resources Tamzil, Mohammad Hasil; Wiryawan, Ketut Gede; Septian, I Gede Nano
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.v25i4.9499

Abstract

This review article is written to provide information to readers regarding the potential of quail as a genetic resource of poultry for poultry-based food production. Quail was first domesticated in Japan and has strong potential for development as both a meat and egg producer. This species is known for its high feed efficiency in meat production, characterized by a high carcass yield, dominant meat deposition in the breast and thigh, and a superior meat-to-bone ratio compared to native chickens and broilers. In addition, quail demonstrates egg production capabilities that are nearly comparable to those of commercial laying hens, although with slightly lower feed efficiency. Based on these characteristics, quail is worthy of consideration as a genetic resource of poultry that is efficient and economical in providing animal protein.
Study of Spatha Anatomical Structure of Araceae Family: A Literature Review Qalbi, Alifa Tsamaratul
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.v25i4.9530

Abstract

Anatomical specialization in the Araceae family can use the spatha organ as a distinctive characteristic. This study is important to support the understanding of spatha structural variations that contribute to the identification and classification of Araceae plants.  This paper aims to examine the anatomical structure of the spatha of several species of Araceae. Data were collected using the literature review method by involving relevant sources from 2005-2025 obtained from Publish or Perish and Google Scholar. The data were analyzed descriptively by grouping patterns across species. The parameters observed included, (1) epidermal cell shape and (2) stomatal type. The results showed structural variations in spatha, obtained three types of epidermal cell shape and five types of stomata. Based on the literature review, it can be concluded that the anatomical variation of spatha between species of Araceae found, shows a distinctive pattern that can be used as a diagnostic character. This result is important in supporting morphological data for taxonomic purposes within the Araceae family.
Identification of Endoparasites in the Digestive Tract of Free-Range Chickens (Gallus domesticus) Najwah, Najwah; Noorasifa, Noorasifa; Muhamat, Muhamat
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.v25i4.9556

Abstract

This community-based study highlights the health risks associated with free-range farming systems of village chickens (G. domesticus) in Indonesia. The primary aim was to examine the presence of gastrointestinal endoparasites and assess their impact on chicken health and productivity. The method involved macroscopic and microscopic examination of the digestive tract of one village chicken using standard parasitological techniques, including flotation with saturated salt solution. The findings revealed mixed infections by nematode Ascaridia galli and cestode Raillietina spp., both of which are known to disrupt nutrient absorption, cause tissue damage, and reduce growth and egg production. A. galli was identified in the jejunum and its eggs confirmed microscopically, while Raillietina spp. segments were found in the ileum. The results demonstrate that free-range chickens are highly vulnerable to helminth infections due to poor sanitation and environmental exposure. Preventive and routine control measures are essential to maintain poultry health and support rural economic sustainability.
Effectiveness of Fungus Aspergillus sp. and Endofit Fungus as Bioremediation for Batik Pewarna Waste in Lake Teluk Ulhaq, Mi'Rajul Auliya; Novrianti, Harum Salsabila; Yerdi, Nisyaroza; Sihombing, Marsaulina
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.v25i4.9584

Abstract

Batik wastewater contains toxic pollutants such as chromium (Cr) and lead (Pb), which cause serious environmental pollution, therefore eco-friendly remediation methods are required. This study aimed to evaluate the effectiveness of Aspergillus sp. and endophytic fungi as bioremediation agents in reducing the color intensity of batik dye wastewater from Lake Teluk, Jambi. The research was conducted through an experimental design using two pre-incubation treatments, namely 24 hours and 5 days, before fungi were applied to the wastewater. The effectiveness of the treatment was measured using a UV-Vis spectrophotometer at 550 nm, and the percentage of decolorization was analyzed by comparing results across treatments. The results showed that Aspergillus sp. with a 5-day pre-incubation achieved the highest color reduction of 40.87%, whereas the 24-hour pre-incubation of both Aspergillus sp. and endophytic fungi only reduced color intensity by about 27–29%. These findings demonstrate that longer incubation time promotes mycelial growth and enhances enzymatic activity, including laccase and peroxidase, which accelerate dye degradation. It can be concluded that Aspergillus sp. is a more effective bioremediation agent than endophytic fungi, particularly with a 5-day pre-incubation period. The implication of this study suggests that further field-scale applications should be developed to establish Aspergillus sp. as a sustainable, safe, and efficient technology for batik wastewater management.
Characteristics and Potential of Nitrogen-fixing Microbes in the Rhizosphere of Corn and Legume Plants on Kisar Island Mahulette, Ferymon; Pattipeilohy, Mery; Pelamonia, Alamanda
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.v25i4.9646

Abstract

The Kisar Island community usually plants legumes and corn in one hole called the hapa planting system. This planting system allows interaction between microbes, especially in the rhizosphere that supports plant growth. This study aims to characterize and test the potential of nitrogen-fixing microbes in the rhizosphere of legumes and corn plants using the hapa planting system. Isolation and characterization of nitrogen-fixing microbes using Yeast extract mannitol agar (YEMA) media added with Congo red and bromothymol blue as indicators. The potential of the microbes tested was the ability to dissolve phosphate using Picovskaya media and cellulolytic using Carboxy methyl cellulose (CMC) media. A total of five isolates of nitrogen-fixing microbes were found each in the rhizosphere of corn and mung beans (JKH) and corn and red beans (JKM) with varying numbers and characteristics. The number of microbes in the JKH rhizosphere was 9.5x102 cfu/g lower than the number of microbes in JKM which was 1.5x103 cfu/g. The highest phosphate-dissolving ability was found in isolate KM5 with a phosphate solubility index of 3.14, while the cellulolytic ability was found in isolate KH1 with a cellulolytic index of 0.80. These potential microbes can be developed as starters for developing biofertilizers on less fertile agricultural land in the future.
Potential of Antimicrobial Peptides (AMPs) Extracted from Black Soldier Fly Larvae Against Vibrio parahaemolyticus In Vitro Khanifa, Riskia; Ulya, Aida Himmatul; Darmawan, Ahmad Edi; Mahsunah, Anis H.; Mahardhika, Wahyu Aji
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.9655

Abstract

Whiteleg shrimp (Litopenaeus vannamei) is one of the most widely farmed shrimp species; however, its cultivation is frequently threatened by vibriosis caused by Vibrio parahaemolyticus. To date, the potential of antimicrobial peptides (AMPs) derived from Black Soldier Fly (BSF) larvae as natural antimicrobial agents has not been reported. This study aimed to evaluate the effectiveness of BSF larval AMPs against V. parahaemolyticus, the causative agent of vibriosis in L. vannamei. Data were analyzed using a quantitative descriptive approach. The results showed that BSF larval AMPs contained protein levels ranging from 5.2–12.03% in the first trial and 9.19–10.82% in the second trial, while the water content varied between 4.77% and 77.89%. In vitro testing demonstrated that BSF larval AMPs inhibited V. parahaemolyticus growth with a 9 mm inhibition zone in all treatments. Further in vivo studies and optimization are necessary to develop BSF larval AMPs as sustainable, eco-friendly antimicrobial agents.
Effect of Soil Tillage Systems and Boiler Ash Application on the Growth and Yield of Sugarcane (Saccharum officinarum L.) Suryana, Suryana; Zuliati, Septiarini; Sukmawati, Riska; Fadillah, Resti
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
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.v25i3.9751

Abstract

Soil tillage and the application of organic materials such as boiler ash play a crucial role in improving soil fertility and crop productivity. This study aimed to evaluate the effects of different tillage systems and boiler ash application on the growth and yield of sugarcane (Saccharum officinarum). The experiment was arranged in a randomized complete block design (RCBD) with five treatments and three replications, involving tillage variations (plowing, harrowing, subsoiling) and 40 tons ha⁻¹ of boiler ash. Data were analyzed using the LSD test at a 5% significance level. The results showed that treatment P5 produced the best growth performance, with a plant height of 2.85 cm, stem diameter of 2.33 cm, and 15 tillers at 9 weeks after planting. This treatment also achieved the highest yield of 122.79 tons ha⁻¹, with a 7.18% increase in productivity. Positive correlations were observed between yield and plant height (R² = 0.4593) as well as stem diameter (R² = 0.793). These findings suggest that the appropriate combination of tillage techniques and boiler ash application has the potential to sustainably enhance sugarcane productivity.
Analysis of the Comfort Level of Green Open Spaces in Medan Srena, Mona Fhitri; Alfi Laila Zuhriansah; Kusuma, Yosie Syadza; Ria Astuti; Rizky Febriana Br Lubis; Rahmah, Hanifa; Sidabukke, Simon H
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.v25i4.9832

Abstract

Urban environmental comfort increasingly challenged by rapid population growth and development. Green Open Spaces (GOS) are crucial in enhancing community also life quality. This study assess the comfort value of GOS in Medan City by examining physical, biotic, and social factors. The research employed a combination of vegetation inventory to evaluate biodiversity, environmental measurements to assess air quality and noise levels, and public perception surveys to understand social comfort. The findings reveal that Cadika Park possesses the highest vegetation diversity with 31 tree species, dominated by Terminalia mantaly, which also recorded the highest Leaf Area Index (LAI) of 1.78. Physically, air quality within GOS areas is better than outside, although noise levels still exceed environmental quality standards. Socially, the community perceives GOS as comfortable and beneficial for daily activities. In conclusion, despite certain physical limitations, GOS in Medan City contributes positively to environmental comfort, underscoring the need for continuous management and sustainable development of urban green spaces.

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