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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 2,949 Documents
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Phytochemical Characterization of White Turmeric (Curcuma mangga Val.) Extract as a Candidate Natural Immunostimulant for Aquatic Organisms Magdalin Ulaan; Numisye I. Mose; Yeni Indriani; Jetti T. Saselah; Yessi A. P Manganang
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12320

Abstract

The increasing intensity of aquaculture practices has elevated the risk of disease outbreaks, which may negatively affect aquaculture productivity. The use of natural products containing bioactive compounds represents a promising strategy for improving the health status of aquatic organisms. This study aimed to characterize the phytochemical constituents of white turmeric (Curcuma mangga Val.) extract to identify bioactive compounds with potential applications as natural immunostimulants in fish feed. The extraction process was carried out using 250 g of white turmeric powder by the maceration method. The resulting extract was subsequently filtered, concentrated using a rotary evaporator, and subjected to phytochemical screening based on colorimetric assays. Phytochemical analysis revealed that white turmeric tested positive for the presence of flavonoids, alkaloids, saponins, and tannins. The findings indicate that white turmeric extract has considerable potential as a natural source of bioactive compounds for incorporation into fish feed formulations. Nevertheless, further studies are required to evaluate its effects on immune responses, growth performance, and disease resistance in aquatic organisms.
Effect of Methyl Jasmonate on In Vitro Callus Growth of Momordica cochinchinensis Widyawati S. Isima; Jusna Ahmad; Devi Bunga Pagalla; Novri Youla Kandowangko; Indriati Husain
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12324

Abstract

Momordica cochinchinensis (Lour.) Spreng., locally known as dumbaya in Gorontalo, is a tropical climbing plant with potential as a functional food and medicinal resource, but its natural availability is limited by low seed germination, slow growth, and environmental sensitivity. This study aimed to determine the effect of methyl jasmonate (MeJA) concentrations on callus growth of young stem explants of M. cochinchinensis under in vitro conditions. The experiment used a completely randomized design with five treatments: MS without plant growth regulators, MS + 2,4-D + BAP, MS + MeJA 6 mL/L, MS + MeJA 11 mL/L, and MS + MeJA 16 mL/L. The observed parameters were callus formation percentage, callus initiation time, and callus morphology. Quantitative data were analyzed using one-way ANOVA followed by Duncan’s test at 5%, while morphological data were described qualitatively. All treatments produced 100% callus formation within 14 days. MeJA affected callus initiation time, with MS + MeJA 6 mL/L showing the fastest average response at 3.67 days after culture. The callus was mostly friable with varied coloration. This treatment may support further development of M. cochinchinensis callus culture and provides preliminary information for optimizing in vitro propagation protocols for this locally valuable species in future studies.
Analysis of Balanced Nutrition Knowledge and Eating Habits of College Students Kusmiyati, Kusmiyati; Ningtias, Anggun Cahya; Wulandari, Baiq Hesti; Aulia, Dian Ismi; Lestari, Sri Ayu
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.12325

Abstract

Knowledge of balanced nutrition is a crucial factor influencing a person's eating habits. The purpose of this study was to identify balanced nutrition knowledge and eating habits among university students, thus providing a basis for effective education related to balanced nutrition guidelines. Respondents were Biology Education students at the Faculty of Teacher Training and Education, University of Mataram, who had never taken a Nutrition Science course and were willing to complete the questionnaire. Data on balanced nutrition knowledge were collected using a test, while data on eating habits were collected using a non-test instrument. Data collection used a Google Form, and data were analyzed descriptively, categorized as insufficient, sufficient, and good. The results showed that knowledge of balanced nutrition was categorized as good (64.1%), sufficient (33.3%), and insufficient (2.6%), while eating habits were categorized as good (25.6%), sufficient (64.1%), and insufficient (10.3%). Conclusions: 1). Most students' nutritional knowledge was categorized as good, while most students' eating habits were categorized as sufficient; 2). Education on balanced nutrition knowledge and eating habits is needed for students.
Necrotizing Erythema Nodosum Leprosum (ENL) Post-MDT in Multibacillary Hansen’s Disease: A Case Report Mira Nupila Rahma; Made Prajnana Adhi Parasikan Susana; Wibisono Hasanul Muhtaram; Ashila Sallama Nur Fadlila; Indri Tiffani; Lalu Abdul Mubarak; Retno Dwi Utami; Baiq Mayada Isqie; Florentcia Davina Gunawan; Nensy Dwi Astika; Pande Komang Inten Widya Iswara Oka; Kurniati Kurniati; Yunita Hapsari
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12326

Abstract

Necrotic erythema nodosum leprosum (ENL) is a rare and severe type 2 leprosy reaction that mainly affects patients with multibacillary Hansen's disease and may progress to tissue necrosis. We report the case of a 26-year-old woman with released-from-treatment (RFT) multibacillary Hansen's disease who presented with recurrent painful erythematous nodules, cutaneous necrosis, paresthesia, numbness, and peripheral neuropathy. Clinical examination revealed enlarged and tender peripheral nerves with sensory and motor impairment, while slit-skin smear demonstrated a bacteriological index of +3. Laboratory findings showed leukocytosis, neutrophilia, and mild microcytic anemia, indicating an active inflammatory process. The patient was diagnosed with recurrent necrotic ENL after completion of multidrug therapy and was treated with systemic corticosteroids, analgesics, wound care, emollients, neurotropic supplementation, and iron therapy. Clinical improvement and a reduction in the bacteriological index were observed during follow-up, although recurrent skin lesions and residual sensory neuropathy persisted. This case emphasizes that necrotic ENL may occur after RFT and highlights the importance of early recognition, appropriate treatment, and close follow-up to reduce recurrence, prevent irreversible nerve damage, and improve long-term outcomes.
Analysis of the Physical Properties of Laikang II Reservoir Water in Takalar Regency as an Alternative for Clean Water Sulistiawaty, Sulistiawaty
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.12328

Abstract

Reservoirs are essential water resources that function to store rainwater runoff, support irrigation activities, and maintain water availability during dry seasons. This study aimed to analyze the water quality of Laikang II Reservoir, Takalar Regency, based on physical water quality parameters. A quantitative descriptive approach was employed with water sampling at three locations: Well 1 (S1), the reservoir (S2), and Well 2 (S3). The analyzed parameters included temperature, Total Dissolved Solids (TDS), turbidity, color, odor, taste, and pH. The results were evaluated by comparing them with Government Regulation No. 22 of 2021 (Class II water quality standards) and Minister of Health Regulation No. 2 of 2023 concerning hygiene and sanitation requirements. The results showed that most physical water quality parameters in Laikang II Reservoir generally met the Class II water quality standards. However, turbidity and color in S2 (reservoir water) exceeded the permissible limits for hygiene and sanitation purposes, indicating localized water quality degradation. In contrast, S1 and S3 showed relatively better water quality conditions, suggesting that groundwater sources are less affected by surface contamination compared to the reservoir. These findings highlight that reservoir water quality is more vulnerable to environmental pressure, particularly from sedimentation and surrounding land-use activities. Therefore, continuous water quality monitoring, control of domestic and agricultural runoff, implementation of buffer vegetation zones, and sediment management are recommended to maintain the sustainability of the reservoir as a water resource.
Response Fruit Flies to Methyl Eugenol Trap Heights in Guava Orchards in Rawamerta, Karawang, West Java Nabilla Yusran Apriliyana; Siti Latifatus Siriyah; Nurcahyo Widyodaru Saputro; Febrina Herawani; Slamet Abadi
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12336

Abstract

Guava is a popular fruit commodity widely cultivated in Indonesia due to its refreshing taste and suitability for tropical climates. Several commonly cultivated guava varieties include water apple (Syzygium aqueum), crystal guava (Psidium guajava), and Malay apple (Syzygium malaccense). During its cultivation, guava crops often face constraints from fruit fly (Bactrocera sp.) infestations, which can diminish both the quality and quantity of the harvest. Conventional control practiced by farmers typically involves wrapping the fruit in plastic; however, this method is considered inefficient and potentially increases plastic waste. Therefore, eco-friendly control alternatives are required, such as the utilization of attractant traps. This study aimed to determine the most effective attractant trap height for capturing fruit flies. The research employed a single-factor Randomized Complete Block Design (RCBD) with five trap height treatments: P1 (100 cm), P2 (150 cm), P3 (200 cm), P4 (250 cm), and P5 (300 cm) above ground level, with five replications each. Data were analyzed using Analysis of Variance (ANOVA) and followed by Duncan’s Multiple Range Test (DMRT) at a 5% significance level if significant differences were observed. The results indicated that the different trap heights significantly affected the number of fruit flies captured. The 300 cm trap height treatment yielded the highest catch, with a total of 521 fruit flies. Furthermore, five Bactrocera species were identified among the trapped population: Bactrocera carambolae, Bactrocera correcta, Bactrocera kandiensis, Bactrocera dorsalis, and Bactrocera occipitalis, with Bactrocera carambolae being the most dominant species. Key words: Attractant, fruit flies, guava, trap height
The Relationship Between Cyberbullying and Suicidal Behavior in Adolescents at Mataram State Senior High School 1 Faiz, Aurellia Sabela; Diatmika, I Putu
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.12337

Abstract

Suicide represents a significant global health concern and ranks as the fourth biggest cause of death for people between 15 and 29 years old. Cyberbullying has been recognized as a contributing factor linked to suicidal actions, especially in teenagers. Indonesia's low digital civility level may increase the risk of cyberbullying in online interactions. Nonetheless, research exploring the connection between cyberbullying and suicidal actions among teens in Mataram City is still scarce. This study aimed to determine the relationship between cyberbullying and suicidal behavior among students at SMA Negeri 1 Mataram. A cross-sectional approach was used, featuring 345 students chosen by stratified random sampling. Information was gathered with the Cyberbullying Victimization Scale (CVS) and the Suicidal Behaviors Questionnaire-Revised (SBQ-R). The data were examined through the Spearman Rank-Order correlation method. Findings indicated a notable positive relationship between cyberbullying and suicidal actions (rho = 0.375; p < 0.001), suggesting a medium connection. Increased levels of being a victim of cyberbullying were linked to a higher inclination towards suicidal actions. In conclusion, cyberbullying is significantly related to suicidal behavior among adolescents. These findings highlight the importance of preventive strategies and psychosocial interventions involving schools, families, and mental health professionals to reduce cyberbullying and support adolescent mental health.
Effect of Mimosa pudica Extract on NF-κB Expression in Blastocystis sp. Inoculated Rats Dzakiyyah Nafies Zirma; Eka Nofita; Nuzulia Irawati; Roza Silvia; Yanti Rahayu
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12339

Abstract

Blastocystis sp. is an intestinal protozoan capable of inducing intestinal inflammation through activation of the Nuclear Factor Kappa B (NF-κB) signaling pathway. Current treatment relies on metronidazole, although its efficacy is limited by variable therapeutic responses and adverse effects. Mimosa pudica contains bioactive compounds with potential antiprotozoal and anti-inflammatory activities. This study aimed to evaluate the effect of Mimosa pudica extract on NF-κB expression in Blastocystis sp.-infected Wistar rats. An experimental post-test control group design was conducted using 30 male Wistar rats randomly assigned to six groups: negative control, positive control, metronidazole (9 mg and 13.9 mg), and Mimosa pudica extract (40 mg and 80 mg). Rats were orally inoculated with 10⁵ Blastocystis sp., followed by treatment. Phytochemical screening and FTIR was performed, and NF-κB expression was analyzed using RT-PCR. Phytochemical analysis confirmed the presence of flavonoids, alkaloids, tannins, and saponins. Administration of Mimosa pudica extract reduced NF-κB expression compared with the positive control. A significant difference in NF-κB expression was observed among the study groups (p = 0.028). These findings suggest that Mimosa pudica extract exhibits antiprotozoal and anti-inflammatory activity and may serve as a potential complementary therapy for blastocystosis through modulation of the NF-κB signaling pathway.
The Impact of Rice Intensification Three Times a Year (IP300) on Rice Field Degradation in West Lombok District Yusuf, M; Fadli, Fadli; Rahayu, Muji
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.12344

Abstract

The aim of this research are to: (1) Identify the main factors in the implementation of IP300 that contribute to the degradation of rice fields in West Lombok Regency; (2) Formulate a strategy for mitigating rice field degradation that supports increased productivity without sacrificing soil quality in the IP300 implementation area; and (3) Evaluate farmers' perceptions and responses to the impact of IP300 on soil fertility and sustainability of farming businesses. The method used is a descriptive method, while data collection uses survey techniques and literature studies. The results of the study indicate that: (1) The main factors of land degradation in the implementation of IP300 in West Lombok Regency are: intensification of chemical fertilizer use, intensive pesticide use, and planting systems and cultivation practices in IP300; (2) The strategy for mitigating rice field degradation that supports increased productivity without sacrificing soil quality in the IP300 implementation area is: restoration of soil function through balanced fertilization, adaptive irrigation, crop diversification, IPM, and adoption of precision technology; and (3) The perception and response of rice farmers to IP300 are starting to shift from simply pursuing productivity to awareness of sustainability. However, adaptive responses have only emerged in some farmer groups.
Ethnobotany of the Teo Sweet Potato Plant (Tacca leontopetaloides) as an Alternative Food for the Bajo Tribe Lambera, Walisa Ardita; Solang, Margaretha; Ahmad, Jusna; Lamanganjo, Chairunnisah J; Isra, Muhammad
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
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.v26i2.12346

Abstract

Teo yam (Tacca leontopetaloides) is a coastal local plant with potential as an alternative food source; however, its utilization is declining due to decreasing local knowledge among communities. This study aimed to examine the level of knowledge of the Bajo community regarding teo yam, traditional processing techniques, and its utilization as an alternative food source. The study was conducted from January to April 2026 in Bumi Bahari, Torosiaje Jaya, and Torosiaje Villages, Popayato Subdistrict, Pohuwato Regency, using a qualitative descriptive method with an ethnobotanical approach. Data were collected through observation, semi-structured interviews, and documentation involving 60 informants selected through snowball sampling. The results showed that community knowledge varied by age group, with adults and the elderly demonstrating higher levels of knowledge than younger generations, indicating a decline in local knowledge transfer. Teo tubers are traditionally processed into flour through peeling, grating, soaking, settling, drying, and straining, before being used to prepare traditional foods such as cendol, loho bua, onde-onde, cucur, and ledo. The findings suggest that teo yam has potential as an alternative carbohydrate source while highlighting the importance of preserving local knowledge to sustain its utilization.

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