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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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Relationship of Role-Play Education with Students’ Scabies Knowledge at the Advent Secondary School Dormitory Noelbaki Radja, Cindy; Deo, Dwita Anastasia; Wardani, Nimas Prita Rahajeningtyas Kusuma; Koamesah, S. M. J.
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.11010

Abstract

Scabies, a parasitic dermatosis caused by the mite Sarcoptes scabiei var. hominis, is a public health concern in congregate living environments such as dormitories, where suboptimal health literacy facilitates sustained transmission. This quasi-experimental study assessed the efficacy of a role-play-based health education intervention on scabies-related knowledge among adolescent residents of the Advent Secondary School Dormitory in Noelbaki, Central Kupang, Indonesia. Knowledge was measured using a validated 10-item questionnaire administered immediately pre- and post-intervention. Data analysis utilized descriptive statistics and the non-parametric Wilcoxon signed-rank test, with statistical significance defined as p < 0.05. Results demonstrated a significant increase in mean knowledge scores from 50.51 (SD = 15.75) to 91.73 (SD = 9.95). Categorization of knowledge levels revealed a pronounced shift: the proportion of participants with inadequate knowledge declined from 63.3% to 0%, while the proportion with adequate knowledge increased from 7.1% to 89.8%. The Wilcoxon test confirmed a statistically significant improvement in post-intervention scores (p < 0.001). These findings indicate that a targeted, role-play educational intervention is an effective pedagogical strategy for significantly enhancing scabies prevention literacy in high-density residential settings, warranting consideration for integration into broader public health initiatives aimed at mitigating communicable skin diseases.
Composition and Density of Seagrass Species in Tanjung Aan Coastal Waters, Central Lombok Ningsih, Resthi Maryati; Larasati, Chandrika Eka; Wahyudi, Rhojim
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.11017

Abstract

Seagrasses are flowering plants (Angiosperms) with a wide distribution along the world's coastlines, including the Indo-Pacific region where 15 species are found in Indonesian waters. Seagrass beds play important ecological roles, such as stabilizing sediments, providing habitat for marine organisms, and contributing to nutrient cycling in marine ecosystems. This study aims to identify seagrass species, composition, and density in the coastal waters of Tanjung Aan, Central Lombok, to support sustainable coastal ecosystem management efforts. The method used was Line Transect with quadrat sampling, along with measurements of water quality parameters and sediment grain size analysis. The results showed differences in composition and community structure between two observation stations. Station 1 was dominated by S. isoetifolium and C. rotundata with a simple community structure, while Station 2 was more diverse with a dominance of C. rotundata and E. acoroides, reflecting more stable and sheltered habitat conditions. The highest seagrass density was found in S. isoetifolium. This study provides important baseline data for the conservation of seagrass ecosystems in the coastal areas of Lombok Island.
Assessment and Analysis of Sustainable Agroecosystem Management Through the Implementation of an Integrated Farming System (IFS) In Lempenge Hamlet, Rempek Village Zainab, Zainab; Astiko, Wahyu
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.11018

Abstract

Tropical drylands in Indonesia face serious challenges in maintaining food security due to limited water availability, soil degradation, and low production efficiency. This study aims to evaluate the potential application of an Integrated Farming System (IFS) integrated with the Internet of Things (IoT) as a model for sustainable agroecosystem management in Lempenge Hamlet, Rempek Village, North Lombok Regency. The research employed a case study approach through the analysis of primary literature, field observations, and national policy reviews related to agriculture and food security. The findings indicate that the major constraints in the agroecosystem include limited water resources, soil degradation, the dominance of monoculture systems, and the low socio-economic capacity and digital literacy among farmers. The implementation of IoT-based IFS demonstrates significant advantages, including a 15–50% increase in land productivity, up to 30% efficiency in water and fertilizer use, and a 17% reduction in carbon emissions through organic waste recycling and precision input management. Moreover, the model contributes to higher farmer income, enterprise diversification, and stronger village institutions. However, implementation remains limited by high investment costs, inadequate internet infrastructure, and insufficient technical skills among farmers. Therefore, policy support such as equipment subsidies, institutional strengthening, digital literacy training, and the use of low-power communication networks like LoRaWAN is required to promote adaptive and sustainable smart farming systems in Indonesia’s tropical dryland regions.
The Effect of Methanolic Extract of Asiatic Bitter Yam (Dioscorea hispida) Tuber on 3rd Instar Larvae Drosophila melanogaster Mortality Bahri, Syamsul; Wirdullutfi, Wirdullutfi
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.v25i3.11026

Abstract

Drosophila melanogaster is a cosmopolitan insect widely used in genetic studies due to its short life cycle, large offspring numbers, and low cost. One of the plant species known to contain natural pesticides is asiatic bitter yam, which is known by the local name of gadung. Tubers of this species contain dioscorine toxins that have pesticide properties, which can cause nervous disorders. This study aimed to determine the effect of asiatic bitter yam tuber extract (Dioscorea hispida) on 3rd instar larvae of Drosophila melanogaster. The tuber extract was obtained by macerating the sample in 96% alcohol for 72 hours, followed by sieving and then evaporating the extract using a rotatory evaporator. The effect of eight concentrations of tuber extract, namely 0 ppm, 50 ppm, 100 ppm, 150 ppm, 200 ppm, 250 ppm, 300 ppm, and 350 ppm on 3rd instar larvae mortality of this species was studied using a completely randomized design. Every single treatment used 6 larvae with 5 repetitions. The results demonstrated a positive correlation between increasing concentrations of asiatic bitter yam tuber extract and larval mortality rates. One-way ANOVA statistical analysis showed a significant effect of the extract on larval mortality (p < 0.05). Results showed that the asiatic bitter yam tuber extract had a significant effect on 3rd instar larvae Drosophila melanogaster mortality, as the F value was greater than the F critical (10.28571>2.312741). However, the highest percentage of mortality caused by this extract is lower than the value required by the World Food Agency. since the mortality caused by this extract less than 50%, its effect is still below the minimum standard as a pesticide.
Physical Quality of Banana Stem and Indigofera sp Mixture Fermented Using MA-11 at Different Doses Istiana, Amanda; Sukaryani, Sri
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.v26i1.11027

Abstract

This study aimed to evaluate the effect of different doses of MA-11 on the physical quality, pH, and dry weight of a fermented mixture of banana pseudostem and Indigofera forage with molasses addition. Fermentation was applied as a method to improve the utilization of local feed resources with low physical quality. The experiment was conducted using a Completely Randomized Design with three treatments and four replications. The treatments consisted of P0: banana pseudostem + Indigofera forage + molasses (control), P1: banana pseudostem + Indigofera forage + molasses + 1 cc MA-11, and P2: banana pseudostem + Indigofera forage + molasses + 2 cc MA-11. Fermentation was carried out for 12 days. The observed variables included physical quality (color, aroma, and texture), pH value, and dry weight. Data were analyzed using analysis of variance followed by Duncan’s Multiple Range Test. The results showed that MA-11 supplementation significantly improved the physical quality of the fermented mixture, as indicated by higher scores for color, aroma, and texture compared to the control. In addition, MA-11 significantly reduced the pH value of the fermented product. However, the application of MA-11 had no significant effect on dry weight. It can be concluded that the fermentation of banana pseudostem and Indigofera forage using MA-11 effectively improved physical quality and fermentation characteristics, although it did not affect dry weight.
In Silico Phylogeny of Magelang Taro (Colocasia esculenta) Using rbcL and matK DNA Barcodes Kusumaningrum, Serafica Btari Christiyani; Kusumasri, Clara Ancilia Pramita; Ramadani, Shefa Dwijayanti
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.11034

Abstract

Colocasia esculenta (taro) is an important tropical crop with high morphological diversity, particularly in Magelang Regency and City, Indonesia. However, morphologically based identification is often unreliable due to strong environmental influences, which limit its effectiveness in resolving genetic relationships among local varieties. Therefore, molecular approaches such as DNA barcoding are required to obtain more accurate and consistent genetic information. This study aimed to analyse the phylogenetic relationships among C. esculenta varieties from Magelang and to evaluate the effectiveness of the chloroplast genes rbcL and matK as DNA barcodes using an in silico approach. Secondary nucleotide sequence data for rbcL and matK were retrieved from the NCBI GenBank database and analysed using multiple sequence alignment with ClustalW in MEGA X. Phylogenetic trees were reconstructed using the Neighbour-Joining method with the Tamura-3-Parameter model and 1,000 bootstrap replications. At the same time, genetic distances were calculated using pairwise distance analysis. The results showed that matK exhibited a high level of sequence conservation, effectively resolving interspecific relationships within the genus Colocasia, but showed limited resolution at the intraspecific level. The rbcL gene displayed slightly higher nucleotide variation than matK, yet remained insufficient to discriminate local C. esculenta varieties clearly. Genetic distance analysis confirmed very low divergence among several varieties, indicating close evolutionary relationships. In conclusion, the use of rbcL or matK as single markers is inadequate for distinguishing local taro varieties. It is recommended that future studies employ multilocus approaches by combining rbcL–matK with faster-evolving markers, such as ITS, ITS2, or trnH–psbA, to achieve higher resolution at the intraspecific level and to support conservation and breeding programs of local taro germplasm.
Antifungal Activity of Methanol Extract of Mikania micrantha Kunth. Leaves Against Malassezia furfur Rahmawati, Rahmawati; Nurmeiti, Evi; Wulandari Rousdy, Diah
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.v26i1.11042

Abstract

West Kalimantan experiences a tropical climate characterized by elevated humidity, which creates an environment conducive to the proliferation of Pityriasis versicolor due to Malassezia furfur. Plants with medicinal properties that include alkaloids, flavonoids, phenols, terpenoids, tannins, and quinones, such as sembung rambat (Mikania micrantha Kunth.), represent promising sources of antifungal compounds. This research sought to assess the antifungal efficacy of the methanol extract from sembung rambat leaves against Malassezia furfur in a laboratory setting and to identify its minimum inhibitory concentration. The disc diffusion technique was employed with extract concentrations of 20%, 25%, 30%, and 35%. Ketoconazole at 2% acted as the positive control, while sterile distilled water was utilized as the negative control. The diameters of the inhibition zones were evaluated using the Kruskal-Wallis test, accompanied by Duncan's multiple range test. The findings indicated that all concentrations of the extract successfully suppressed the growth of Malassezia furfur. The minimum inhibitory concentration was established at 20%, resulting in an inhibition zone measuring 0.48 cm in diameter after 48 hours of incubation. The methanol extract of sembung rambat leaves displayed a fungistatic action against Malassezia furfur in vitro.  
Knowledge as Dominant Protective Factor against Scabies Incidence in Sonraen, East Nusa Tenggara Wiranata, Nyoman Agung Ardi; Deo, Dwita Anastasia; Nugroho, Teguh Dwi; Handoyo, Nicholas Edwin
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.11043

Abstract

Scabies persists as a public health challenge in resource-limited rural areas. This study aimed to analyze the association between knowledge level and personal hygiene practices with scabies incidence and to identify the dominant factor in the working area of Sonraen Health Center. A case–control study was conducted on 66 subjects (33 cases and 33 controls) from June to July 2025. Cases were selected by total sampling from medical records, while controls were chosen via simple random sampling. Data were collected using structured questionnaires and clinical observation, analyzed with the Chi-Square test and binary logistic regression. The knowledge level showed a statistically significant relationship with scabies incidence (p = 0.012). Multivariate analysis showed that respondents who had good knowledge (p = 0.013; AOR = 5.65; 95% CI: 1.14 – 27.91) and personal hygiene were not significant in the final model (p = 0.164), although respondents with fairly good hygiene had an Odds Ratio value of 3.21 95% CI: 0.96 – 10.70 with a p value = 0.058. Knowledge acts as the dominant protective factor against scabies in Sonraen. Public health interventions should prioritize contextual health education on household-based scabies prevention.
Resistance Test of Themba Oil Palm Variety against Several Leaf Spot Pathogens Budi, Ismed Setya; Mariana, Mariana; Fitriyanti, Dewi; Tuti, Harlina Kusuma; Mariah, Yanti; Suyanti, Aprilia Putri
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.11045

Abstract

Leaf spot disease is a major constraint during the oil palm nursery stage, reducing seedling quality and affecting long-term productivity. This study evaluated the resistance of the Themba oil palm variety against three leaf spot pathogens: Curvularia spp., Fusarium spp., and Nigrospora spp., based on incubation period, disease intensity, and plant resistance. The research was conducted from June to November 2025 at the Phytopathology Laboratory and greenhouse of the Plant Protection Study Program, Faculty of Agriculture, Lambung Mangkurat University. Pathogens were inoculated on seedlings selected purposively for uniform age and condition, with four replicates per treatment. The incubation period was monitored daily, and disease intensity was scored periodically. Data were analyzed descriptively using mean values to compare plant responses. Results showed all pathogens caused leaf spot symptoms, but with different progression rates. Curvularia spp. was the most aggressive, while Nigrospora spp. developed more slowly with lower severity. Overall, Themba seedlings exhibited moderate resistance to the tested pathogens, indicating their potential in managing leaf spot disease during the nursery stage, especially when supported by optimal environmental management. These findings provide valuable insights for selecting resistant varieties and implementing integrated disease management strategies in oil palm cultivation.
Antioxidant Activity of Methanol Extract Leaves of Neem (Azadirachta indica) Bahri, Syamsul; Wirdullutfi, Wirdullutfi; Hijriani, Baiq Isti
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.v25i4a.11048

Abstract

Azadirachta indica Juss. (neem), a medicinal plant belonging to the Meliaceae. The leaves of this species contain bioactive compounds such as flavonoids, alkaloids, steroids, saponins, tannins, and azadirachtin. These compounds exhibit antimicrobial activity against Salmonella and Escherichia coli. This study aimed to determine the antioxidant activity of the neem leaves' methanol extract by using the DPPH method. The research method used phytochemical screening by separating chemical compounds from samples using 70% methanol solvent. The result showed that the antioxidant activity of the neem leaves' methanol extract is classified in the weak category with an IC50 score of 426.15 mg/mL. One of the main factors explaining the high IC50 values is the differences in the chemical structure and molecular shape of the secondary metabolites contained in the extracts. The antioxidant activity of flavonoids and phenolics is greatly influenced by the number and position of hydroxyl groups, the degree of conjugation, and the presence of sugar groups.

Page 244 of 252 | Total Record : 2520

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