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Kota mataram,
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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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Correlation of Hand Washing with Soap of Oxyuris vermicularis Infection in Children at Angkasa Kindergarten, Surakarta Oktavia, Nadya Putri; Setya, Adhi Kumoro
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.v26i1.11307

Abstract

Oxyuriasis is an intestinal worm infection caused by Oxyuris vermicularis, a non-STH (Non-Soil Transmitted Helminths) group, the infection process does not require soil transmission. One way of transmission is through hand to mouth (autoinfection). Preschool aged children are more susceptible to Oxyuris vermicularis worm infection because they tend to be less aware of personal hygiene. The purpose of this study was to determine the relationship between handwashing with soap and Oxyuris vermicularis infection. This research method was observasional analytic with a cross-sectional approach. The study sample used a total sampling technique, namely all students of Angkasa Kindergarten, Surakarta, with a total of 103 children. Research data were obtained from microscopic observations and questionnaire results, which were then then tested using Chi-Square. Of the 81 Anal swab samples, 3,7% were found to be positive for Oxyuris vermicularis eggs and 96,3% were negative for Oxyuris vermicularis eggs. Chi-Square analysis with Fisher’s Exact Test obtained a significant value of 0.043 (p-value <0,05) which is less than 0,05. It can be concluded that there is a significant correlation bettwen handwashing with soap and Oxyuris vermicularis infection in children at Angkasa Kindergarten, Surakarta.
Review Article: Potential of Natural Extracts on the Inhibition Zone of Acne vulgaris – Causing Bacteria Haryanto, Wahyu; Hidayati, Agriana Rosmalina
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.v26i1.11308

Abstract

Acne vulgaris is a chronic inflammatory skin condition in which bacterial colonization plays a central role in lesion development. Growing concern regarding antibiotic resistance have encouraged the exploration of natural extracts as alternative antibacterial agents. This narrative literature review aims to analyze the zone profiles of natural extracts evaluated using diffusion assays against acne-associated bacteria, including Cutibacterium acnes, Staphylococcus aureus, and Staphylococcus epidermidis, and to identify factors controbuting the variability of antibacterial activity.  A total of 22 primary studies published between 2015 and 2025 were retrieved from Google Scholar, PubMed, and Garuda and analyzed descriptively. The reviewed studies reported inhibition zone diameters ranging from approximately 10 to 25 mm, indicating varying degrees of antibacterial activity. Differences in inhibition zones were influenced by extract concentration, extraction solvent, and diffusion method. Overall, natural extract demonstrated promising antibacterial potential in preliminary in vitro screening assays; however, methodological variations should be carefully considered when interpreting inhibition zone results.
Prediction of Salmon Inhibitor Peptides For DPP-IV Proteins Using Molecular Docking Saputri, Nahdiyah Vernanda; Antonius, Yulanda
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.v26i1.11310

Abstract

Diabetes mellitus is the 3rd leading cause of death in Indonesia. Glucagon like peptide-1 (GLP-1) and gastric inhibitory polypeptide (GIP) are incretin hormones that function in postpandrial insulin secretion. The purpose of this study was to determine potential peptides from salmon as DPP-IV inhibitors for antidiabetic drugs, using the molecular docking method. This study design refers to several in silico peptide design studies through a bioinformatics approach. The results showed that bioactive peptide molecules derived from salmon, as well as peptide 1 and peptide 2 were predicted as potential molecular peptides and had good interactions with DPP-IV proteins, and were proven to be able to inhibit the DPP-IV enzyme as a target for diabetes mellitus drugs through the identification and evaluation of molecular interactions that occurred using the in silico peptide protein-based molecular binding method. The conclusion is that bioactive peptide molecules derived from salmon, as well as peptide 1 and peptide 2 were predicted as potential molecular peptides and had good interactions with DPP-IV proteins and were proven to be able to inhibit the DPP-IV enzyme.
The Influence of Growing Media on the Growth of Kepok Tanjung Banana (Musa paradisiaca) During the Acclimatization Stage Fitri, Yulisa; Joni, Yosi Zendra; Violita, Violita
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.v26i1.11340

Abstract

Kepok Tanjung banana (Musa paradisiaca) is a superior variety with high economic value. Tissue culture is a promising propagation method, but the acclimatization stage is a critical bottleneck. The aim of this study was to test the effect of planting medium composition on the development of Kepok Tanjung banana seedlings during the acclimatization period. A completely randomized design was used with six planting medium treatments: soil (control), cocopeat, rice husk charcoal, soil + cocopeat (2:1), soil + rice husk charcoal (2:1), and soil + cocopeat + rice husk charcoal (2:1:1). Each treatment was repeated four times, with ten plantlets per replicate. Observations were made every two weeks for 12 weeks on parameters of survival, plant height, stem diameter, leaf dimensions, leaf count, root length, and fresh and dry weight. All growth parameters were found to be significantly influenced by the composition of the growing medium, according to data analysis conducted using ANOVA and Duncan's Multiple Range Test (DNMRT) at a 5% significance level. The mixture of soil and rice husk charcoal (2:1) provided the best results, with a survival rate of 95%, plant height of 19.94 cm, stem diameter of 9.95 mm, root length of 25.25 cm, and the highest fresh and dry weights (18.87 g and 1.96 g). This combination offered an optimal balance of aeration, moisture retention, and nutrient availability, supporting the plantlets' transition from in vitro to in vivo conditions. It is concluded that a mixture of soil and rice husk charcoal (2:1) is the most effective medium for the acclimatization of Kepok Tanjung banana plantlets.
Relationship Between Low Birth Weight and Neonatal Asphyxia Incidence at Kalabahi-Alor Regional Hospital in the 2021-2024 Period Sandy, Calistha Regina; Ob-Adang, Gottfrieda P. Taeng; Handoyo, Nicholas Edwin; Dief, Tunggal
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.v26i1.11341

Abstract

Neonatal mortality is still a worldwide issue. Two of the main reasons for new-born deaths, including those at Kalabahi-Alor Regional Hospital, are neonatal asphyxia and low birth weight. It is vital to comprehend how low birth weight is connected to asphyxia to implement preventive measures. This research intends to examine the connection between low birth weight and the occurrence of asphyxia in newborns at Kalabahi-Alor Regional Hospital from 2021 to 2024 after adjusting for other risk factors. The study employs an analytical observational design with a descriptive method. It is a case-control retrospective research. The data analysis comprises univariate, bivariate (Chi-Square), and multivariate (logistic regression) to pinpoint independent risk factors. The bivariate analysis indicates that low birth weight significantly correlates with the occurrence of asphyxia (p-value 0.004), along with prematurity (p-value 0.044). Additionally, the multivariate analysis results revealed that low birth weight is an independent predictor of asphyxia occurrence after accounting for the variables of primiparity and prematurity with a p-value of 0.031 and odds ratio of 5.426, which shows that newborns with low birth weight are over five times more likely to face asphyxia compared to those with normal birth weight. In conclusion, there is a significant correlation between low birth weight and the incidence of neonatal asphyxia at Kalabahi-Alor Regional Hospital from 2021 to 2024 after other risk factors have been taken into account.
Mangrove Carbon Potential in The Bagek Kembar Mangrove Area and Cemara Lembar South Coast, West Lombok Alawiyah, Rita; Syukur, Abdul; Santoso, Didik
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.v26i1.11343

Abstract

The mangrove ecosystem is one of the coastal ecosystems that plays an important role in climate change mitigation due to its ability to absorb and store large amounts of carbon, especially in sediments (below ground carbon). Sedimentary carbon is relatively stable and stored for a long period of time, making its presence an important indicator in blue carbon studies. This study aims to analyze the potential of mangrove sediment carbon storage in Bagek Kembar Village and Cemara Beach, Lembar Selatan Village, West Lombok Regency. The study was conducted from August to December 2025 using a quantitative descriptive method. Sediment sampling was carried out by purposive sampling in three mangrove zones, namely the front, middle, and back zones. In each zone, sediment samples were taken at three depth intervals, namely 0–30 cm, 30–60 cm, and 60–100 cm, resulting in a total of 18 samples analyzed. Analysis of organic matter and sediment carbon content was carried out using the Loss on Ignition (LOI) method, while bulk density was used as a physical parameter of the sediment for calculating sediment carbon stocks. The results of the study showed that the bulk density value of mangrove sediment in Bagek Kembar Village ranged from 0.51–0.62 g/cm³ with an average of 0.57 g/cm³, while at Cemara Beach, Lembar Selatan Village ranged from 0.44–0.69 g/cm³ with an average of 0.60 g/cm³. The carbon stock of mangrove sediment in Bagek Kembar Village was higher than that of Cemara Beach, Lembar Selatan Village. This difference was influenced by the density of mangrove vegetation, the organic matter content of sediment, as well as the environmental characteristics and water dynamics at each location. This study shows that both locations have good potential as sediment carbon stores and need to be managed sustainably.
Early Adolescent Impulsivity in New Trends and Impact on Psychosocial Development Almuthii'ah, Khadijah; Luthfiyah, Luthfiyah; Nadiya Dewi Syahida
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.v26i1.11350

Abstract

Impulsivity is a personality trait characterized by a lack of careful thought. This trait tends to be dangerous if there are no boundaries, especially in early adolescents who do not yet have a mature prefrontal cortex to think about their actions. This study used a literature review method with data search using the latest scientific journals or articles from PubMed, Google Scholar, and ResearchGate. This review found that impulsivity stems from neurophysiological, neural biological, limbic system, and psychological factors that impact adolescents. Adolescents affected by interpersonal issues may be more likely to engage in risky behaviors and experience increased psychological pressure. Consequently, impulsivity in adolescents has the potential to become an issue if not addressed through preventive measures, such as implementing positive reinforcement, practicing mindfulness, controlling self-control, and Impulsive Decision Reduction Training for Youth (IDRT-Y). It is advisable to prevent impulsivity in early adolescence to promote more mature thinking.
Association of Echinoderms with Seagrass on the South Coast of East Lombok Ardani, Sarwan; Syukur, Abdul; Ilhamdi, Mohammad Liwa
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.v26i1.11353

Abstract

Seagrass ecosystems have a vital function in sustaining the stability of coastal environments by enhancing biodiversity and maintaining key ecological processes of associated organisms, including Echinodermata. This study was conducted to examine the species composition, abundance, and distribution patterns of Echinodermata, to evaluate the composition and diversity of seagrass species, and to determine the degree of association between Echinodermata and seagrass in the southern coastal waters of East Lombok, specifically at Lungkak and Poton Bako Beaches. The research employed a survey method using a transect–quadrat technique in intertidal seagrass ecosystems, with subsequent analyses including the Shannon–Wiener diversity index, distribution pattern assessment, and Spearman correlation analysis to quantify the strength of the association. The study found that seagrass diversity indices at both sites were categorized as moderate, with relatively similar species composition, while Echinodermata communities were dominated by several key species exhibiting clustered to uniform distribution patterns. Correlation analysis indicated a positive to weak association between seagrass density and Echinodermata abundance. In conclusion, the seagrass beds in the study area continue to function as important habitats for Echinodermata, although signs of increasing environmental pressure were observed. These findings provide important scientific implications for seagrass ecosystem management and conservation-oriented regulation of coastal activities in East Lombok.
Spatial and Canopy Utilization Pattern by Long-Tailed Monkeys (macaca fascicularis) Along the Oi Marai Tourist Trail Rahman, Dedy; Syaputra, Maiser; Shabrina, Hasyyati
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.v26i1.11354

Abstract

The riparian ecosystem along the Oi Marai tourism trail in Tambora National Park constitutes a critical habitat for various wildlife species, including the Long-tailed Macaque (Macaca fascicularis). This study aims to analyze spatial use and canopy utilization by long-tailed macaques along the Oi Marai tourism trail in response to pressures from tourism activities. Data were collected using line transect and ad libitum sampling methods to record daily movements over a 14-day observation period. Spatial use was analyzed using the Minimum Convex Polygon (MCP) technique based on GPS coordinates. The results identified a single group of long-tailed macaques (Macaca fascicularis) consisting of 21 individuals led by one dominant male (alpha). The home range of this group was recorded at 3.60 ha, with daily travel distances ranging from 1.31 km to 5.52 km and a maximum ranging radius of 0.43 km. The territorial area covered 0.85 ha, with the farthest and nearest night sleeping position (NPS) distances recorded at 0.36 km and 0.03 km, respectively. The core area was estimated at 0.30 ha. Animal movements were predominantly concentrated along the river corridor due to the availability of water and food resources, including both natural forage and supplementary food provided by visitors. Vertically, canopy utilization exhibited functional stratification: strata C and D served as the primary zones for social activities and feeding (65%), whereas strata A and B functioned mainly as protective areas (20%). These findings indicate a reduction in home range size associated with the availability of supplementary food along the tourism trail.
Morphometric And Meristic Aspects of Lemuru Fish (Sardinella lemuru) Landed on Pancer Beach Banyuwangi Rida, Dea Yolanda Aulia; Karnan, Karnan; Santoso, Didik
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.v26i1.11364

Abstract

Lemuru fish (Sardinella lemuru) is the main small pelagic commodity in the Bali Strait that has high economic value but is vulnerable to pressure on the surface. This study aims to analyze the morphometric and meristic characteristics of lemuru fish landed on Pancer beach, Banyuwangi. The research method used a descriptive survey with stratified random sampling techniques of 50 individuals in the period from October to December 2022.  The results of measurements on 23 morphometric variables showed that the total length was 9 ≤ 19 cm (92%), the standard length was 7 ≤ 17 cm (86%), the body width was 1 ≤ 11 cm (90%), the height of the body was 2 ≤ 10 cm (88%), the height of the tail rod was 1 ≤ 9 cm (84%), the length of the tail rod was 1 ≤ 9 cm (96%), the length of the ventral fin was 1 ≤ 9 cm (90%),  Pectoral fin length 1 ≤ 13 cm (98%), Eye diameter 1 ≤ 9 cm (90%) and weight 10 ≤ 24 g (98%). Meanwhile, the calculation of 14 meristic variables of lemuru fish showed that: Number of Hard Dorsal Radius 2 ≤ 12 (88%), Number of Weak Dorsal Radius 3 ≤ 13 (96%), Number of Hard Anal Fin Fingers 2 ≤ 6 (86%), Number of Weak Anal Fin Fingers 2 ≤ 8 (88%), Number of Scales on Lateral Stripes 54 ≤ 67 (78%), Number of Scales Around the Body 33 ≤ 41 (60%), Number of Scales on Side Lines 5 ≤ 17 (94%),  The number of scales below the side line is 10 ≤ 20 (94%).

Page 251 of 252 | Total Record : 2520

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