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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 2,562 Documents
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Effect of Monoreagent Delay Time Variation at Room Temperature on Creatinine Levels Hidayah, Layla Nur; Saktiningsih, Hari
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11265

Abstract

Creatinine is a waste product of body metabolism that is excreted by glomerular filtration in the kidneys. One method for measuring serum creatinine is the Jaffe Reaction which is based on the reaction between creatinine and picric acid in an alkaline medium, forming a red-orange complex. Creatinine reagents have a shorter shelf life or stability, especially after being mixed into a monoreagent. Monoreagents that are delayed may affect the levels of the analyte being tested. Based on this, the study aims to determine the effect of variations in monoreagent delay time at room temperature on creatinine levels. This research used an analytical experimental design and was conducted in the STIKES Nasional laboratory. A total of 10 samples were obtained using quota sampling from students of class 2A2, D-III Medical Laboratory Technology, STIKES Nasional Surakarta. A total of 30 data points were analyzed using the non-parametric Friedman test. The results showed that the average creatinine levels at 0 minutes, 3 hours, and 4 hours were 0.611 mg/dL, 0.555 mg/dL, and 0.572 mg/dL, respectively. Normality testing indicated the data were not normally distributed, so that the non-parametric Friedman test was used. The test results showed a p-value of 0.014 (p < 0.05), indicating a statistically significant difference. In conclusion, variation in monoreagent delay time at room temperature affects creatinine levels.
The Differences SGPT Levels Using Immediately Monoreagent And Delayed For 5 Days At Room Temperature Putri, Salma Yuki Anisa; Saktiningsih, Hari
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11266

Abstract

SGPT (Serum Glutamic Pyruvic Transaminase) is a liver enzyme that plays an important role in assessing hepatocellular damage. The stability of reagents, especially monoreagents consisting of a mixture of reagent 1 and reagent 2, affects the accuracy of laboratory test results. Delaying the use of monoreagent at room temperature may influence the enzymatic activity of SGPT. This study aims to determine the difference in SGPT levels between the monoreagent used immediately and the monoreagent delayed for 5 days at room temperature.This study used an experimental design with 16 serum samples from second-year students in the Diploma III Medical Laboratory Technology Program. SGPT levels were measured using the Clima MC-15 photometer. Two conditions were tested: monoreagent used immediately after mixing and monoreagent stored for 5 days at room temperature. Data were analyzed using the Shapiro-Wilk normality test and because the data were not normally distributed, the Wilcoxon test was used. The results showed that the average SGPT level using the immediate monoreagent was 10.69 U/L, while the delayed monoreagent showed an average of 9.88 U/L. Of the 16 samples, 9 decreased, 3 increased, and 4 remained unchanged. The Wilcoxon test produced a significance value of 0.030 (p < 0.05), indicating a statistically significant difference between the two conditions.In conclusion, there is a significant difference in SGPT levels immediate monoreagent use and delayed monoreagent use for 5 days at room temperature. It is recommended that monoreagent be used immediately after mixing to maintain accurate examination results.
Development of Curcuma xanthorrhiza Nanoemulsion as an Antibiofilm Agent against Multidrug-Resistant Candida albicans: Formulation Approach and In Vitro Evaluation Arifah, Dzulfira; Izzah, Nurul; Pujiani, Dyah Virga; Ardilia, Abidah; Masfufatun, Masfufatun
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11274

Abstract

Candida albicans infection is a serious health concern, particularly in immunocompromised individuals, due to its ability to form biofilms that are resistant to conventional antifungal therapies. Curcuma xanthorrhiza Roxb. (temulawak) possesses antifungal properties; however, its effectiveness is limited by poor solubility and bioavailability. Nanoemulsion formulation offers a promising strategy to enhance the penetration of active compounds. This study aimed to develop and evaluate the effectiveness of temulawak nanoemulsion as an antibiofilm agent against multidrug-resistant (MDR) C. albicans. Using a post-test control group only design, the antibiofilm assay was conducted via the microtiter plate method and analyzed based on Optical Density (OD) measurements. The results showed that temulawak nanoemulsion significantly reduced biofilm formation, with an 89% reduction in OD at the 100% concentration. These findings support the potential use of temulawak nanoemulsion as an alternative therapeutic strategy for Candida albicans infections, particularly those involving drug-resistant biofilms.
Butterfly Community Structure in Ulem-ulem Forest, Southern Area of Mount Rinjani National Park Syakila, Baiq Nike; Ilhamdi, M. Liwa; Wirajagad, Gde Cahyadi
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11283

Abstract

The southern area of Mount Rinjani National Park (TNGR), serves a dual purpose as a tourist destination and a conservation zone under the management of the TNGR Office. Data and information on wildlife diversity, particularly butterflies, in this location are crucial for supporting the development of ecotourism. This study aims to analyze the butterfly community structure in Ulem-Ulem Forest. The research was conducted in July 2025 using a survey method with a sweeping net technique along three observation transects: a water stream transect, a mid-forest transect, and a forest edge transect adjacent to residential areas. The collected data were analyzed using the Shannon-Wiener diversity index, Simpson dominance index, and Pielou evenness index. The results identified 550 individual butterflies, classified into 28 species, 23 genera, and 4 families (Papilionidae, Nymphalidae, Pieridae, and Lycaenidae). The species diversity index (H') value was 3.15, the dominance index (D) value was 0.051, and the evenness index (E) value was 0.94. These results indicate that the butterfly community in the southern area of Mount Rinjani National Park (TNGR), no dominant species, and high evenness.
Correlation Between Duration of Work and Candida Colony Counts and Trichomonas vaginalis Infection among Commercial Sex Workers Nurhidayah, Intan Dwi; Nurcahyani, Nia Riyana; Haryatmi, Dwi
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11294

Abstract

Sexually transmitted infections remain a major health problem among high-risk groups, including female commercial sex workers, in whom Candida spp. and Trichomonas vaginalis are frequently identified as causative agent. This study aimed to determine the relationship between duration of work and Candida colony counts as well as Trichomonas vaginalis infection among commercial sex workers. An analytical observational study with a cross-sectional design was conducted involving 30 respondents. Detection of Trichomonas vaginalis was performed microscopically using wet mount and dry smear preparations, while Candida colony counts were determined through urine culture on CHROM Agar Candida media and confirmed by Lactophenol Cotton Blue (LPCB) staining. Data were analyzed using the Chi-Square and Fisher’s Exact tests. The results showed that 56,7% of respondents had worked for more than three years, 56,7% had Candida colony counts greater that 251 with dominant species Candida krusei and Candida parapsilosis, and 33.3% tested positive for Trichomonas vaginalis. Statistical analysis demonstated a significant association between duration of work and Candida colony counts (p=0.000) as well as Trichomonas vaginalis infection (p=0.001). In conclusion, a longer duration of employment as a commercial sex worker is associated with an increased risk of Candida colonization and Trichomonas vaginalis infection.
Species and Conservation Status of Birds in the Rawa Tripa Peat Forest Area, Nagan Raya, Aceh Kusuma, Hendrix; Maulana, Ikbal; Fithri, Aida; Sari, Widya; Siregar, Zuriana; Kamilah, Ghina; Ariqah, Nada; Rahmawati, Rahmawati; Munawir, Khairul; Zulhilmi, Zulhilmi; Anandita, Munreza; Akbar, Novrizal; Rayhannisa, Rayhannisa; Rubama, Rubama
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11312

Abstract

Peat ecosystems are one of the tropical ecosystems that have high ecological value because they play a role in carbon storage, hydrological regulation, and as a habitat for various fauna groups, including birds. Rawa Tripa, as part of the Leuser Ecosystem Area, is one of the most important peat landscapes in Aceh that faces anthropogenic pressures such as forest fragmentation and land use change. The lack of basic data on bird communities in this area hinders evidence-based conservation efforts. This study aims to inventory the bird species found in the Tripa Peat Forest and assess their conservation value in the context of habitat management. The survey was conducted from July 18 to 28, 2024, using the point count method on 10 observation transects. The results of the study recorded 16 bird species from 12 families, with the Pycnonotidae family being the most commonly found group. Several species with important conservation status were also identified, such as Leptoptilos javanicus (Near Threatened), Acridotheres javanicus (Vulnerable), and the presence of Rhyticeros undulatus (Vulnerable) and their nest, indicating the availability of large trees for nesting. Based on their feeding behavior, the birds of Rawa Tripa exhibit a diversity of ecological functions, ranging from insectivores and frugivores to raptors. These findings indicate that Rawa Tripa still has habitat quality that supports bird communities, even though threats such as hunting and land degradation remain. This study emphasizes the urgency of long-term monitoring and the need for conservation strategies that maintain vegetation structure and wetland sustainability in the Rawa Tripa area.
Species Diversity and Biological Vulnerability of Sharks in Indonesia’s Fisheries Management Area 573 Pereira, Roy; Damayanti , Ayu Adhita; Gigentika, Soraya
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11336

Abstract

The Tanjung Luar Fishing Port (PPTL) in East Lombok is one of Indonesia’s major shark-landing centers operating within Fisheries Management Area (WPP) 573 of the Indian Ocean. Intensive fishing activities carried out for commercial purposes have exerted significant pressure on shark populations in the region. This research aims to analyze species composition, conservation status, size distribution, and sex ratio of sharks landed at Tanjung Luar Fishing Port as a basis for developing sustainable shark fisheries management strategies. Data collection was conducted through direct observation of fishermen’s catches from March to June 2025. The results showed that a total of 2,002 individual sharks were identified, consisting of 33 species. The most dominant species was the silky shark (Carcharhinus falciformis), accounting for 46.6% of the total catch, followed by the tiger shark (Galeocerdo cuvier) (18.3%), the scalloped hammerhead (Sphyrna lewini) (6.6%), and Carcharhinus limbatus (5.7%). Based on the IUCN Red List (2023), the catch included 2 species classified as Critically Endangered (CR), 7 Endangered (EN), and 10 Vulnerable (VU), with 22 species listed in CITES Appendix II. The landed sharks were predominantly adults and subadults with total lengths ranging from 120–280 cm. The sex ratio revealed a significant imbalance, with approximately 3.3 females for every male. These findings indicate high exploitation pressure on shark populations, particularly on mature females, highlighting the need for adaptive and sustainable management strategies for shark fisheries.
Spatial–Vertical Distribution of Microplastics Abundance and Characteristics in the Coastal Waters of Raha City, Muna Regency Rahman, Annisa Syaesar; Afu, La Ode Alirman; Emiyarti, Emiyarti; Warsidah, Warsidah
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11347

Abstract

Microplastics are emerging pollutants increasingly detected in coastal waters and may disrupt marine ecosystem functioning as well as pose potential risks to human health. This study aimed to analyze the spatial–vertical distribution of microplastic abundance and characteristics in the coastal waters of Raha City. Sampling was conducted at three stations representing an anthropogenic activity gradient: the harbor/fish landing port (Station I), the tourism–residential area (Station II), and the river mouth (Station III). At each station, samples were collected at three depths (surface, mid-water, and near-bottom) using a plankton net, then filtered and microscopically identified based on microplastic type and color. The results showed a consistent spatial gradient, with the highest mean abundance at Station I (5.58 particles/m³), followed by Station III (4.45 particles/m³), and the lowest at Station II (1.87 particles/m³). Vertically, microplastic abundance tended to be higher in the surface and mid-water layers than near the bottom, indicating the dominance of low-density particles remaining suspended in the water column. Microplastic characteristics were dominated by fibers across all stations, while black-colored particles were most frequently observed, accounting for >30% at each station. These findings confirm the strong contribution of fisheries–harbor activities and land-based waste inputs (particularly via the river mouth) as the main sources of microplastics in the study area. This study provides important baseline data on the three-dimensional distribution of microplastics in the coastal waters of Raha City and underscores the need to strengthen land-based waste management and regulate marine-related activities in the area.
Effect of KNO₃ Fertilizer Concentration Levels on the Growth and Yield of Butternut Squash (Cucurbita moschata) Sya'bana, Arin Maulani; Budiman, Budiman; Azmi, Tubagus Kiki Kawakibi
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11352

Abstract

Butternut squash (Cucurbita moschata) is a fruit rich in nutrients, especially carbohydrates, making it a potential alternative food source. Optimal growth of this plant can be achieved through fertilization, such as with potassium nitrate (KNO₃), which contains potassium and nitrogen to enhance growth, quality, and yield. This study aimed to determine the effect of different KNO₃ fertilizer concentrations on the growth and yield of butternut squash plants. The research was conducted from February to June 2025 at Kebun Bibit Cibubur Pusat Pengembangan Benih dan Proteksi Tanaman (P2BPT), Jl. Jambore, Cibubur, Ciracas District, East Jakarta City. The experiment used a Randomized Complete Block Design (RCBD) with a single factor, namely KNO₃ concentration, consisting of five treatment levels: K0 (control), K1 (8 g/L), K2 (16 g/L), K3 (24 g/L), and K4 (32 g/L). Each treatment was replicated six times with two samples per replicate, resulting in 30 experimental units and a total of 60 plant samples. The observed parameters included plant height (cm), number of leaves (leaves), stem diameter (mm), fruit weight (g), fruit diameter (cm), fruit length (cm), flesh thickness (cm), and fruit sweetness (°Brix). Data were analyzed using analysis of variance (ANOVA) by The SAS System for Windows 9.0, followed and further testing using Duncan’s Multiple Range Test (DMRT) at a significance level of α = 5%. The results showed that KNO₃ fertilizer had a significant effect on the growth and yield of butternut squash, particularly on plant height at 6–8 weeks after transplanting (WAT), number of leaves at 5–8 WAT, and fruit weight. The highest growth and yield were obtained at the concentration of 32 g/L KNO₃.
Diversity of Durian (Durio zibethinus Murr) in Aik Bual Village, Central Lombok Regency Aryanti, Evy; Sukenti, Kurniasih; Julisaniah, Nur Indah; Muspiah, Aida; Sukiman, Sukiman; Thalita, Deandra Alma
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
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.v26i1.11359

Abstract

Aik Bual Village has a durian community that grows durian, both local and introduced durian. The purpose of this study was to obtain information on the diversity and level of similarity of durian accessions in Aik Bual village, Central Lombok Regency in an effort to save and develop durian germplasm (Durio zibethinus) to obtain the diversity and level of similarity of durian accessions (D. zibethinus) in Aik Bual village, Central Lombok Regency. The study was conducted from December 2023 to October 2024. Sampling of D. zibenthinus accessions was collected using the exploration method. Morphological characterization data was analyzed using NTSys pc. 2.02i software. Durio kutejensis known as Lai was used as an outgroup in this study. The results of the study found eight accessions of D. zibethinus, consisting of introduced durian accessions such as Musang King, Black Thorn (Ochee), Montong, Kane, and Otong, while local durian accessions such as Mentega, Susu, and Sukun. Kinship analysis with NTsys resulted in two main groups, the first group consisting of Montong, Kane and Otong while the second group consisted of Musang King, Ochee, Sukun, Mentega and Susu.

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