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Kota mataram,
Nusa tenggara barat
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 2,597 Documents
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The Effect of Two Different Types of Probiotics on the Physical and Chemical Properties of Rice Straw Saputra, Risqi Dava; Purwati, Catur Suci
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.v26i1.11601

Abstract

Rice straw is one alternative feed resource that has potential for use as livestock feed under certain conditions. This potential is indicated by its abundant availability, while a large proportion remains underutilized. Unfortunately, disposal is often carried out by burning in agricultural fields, which leads to air pollution. This study was conducted to evaluate the fermentation of rice straw using different fermentors, namely MA-11 mixed with molasses and Starbio, and their effects on the physical and chemical properties of rice straw. The experiment employed a Completely Randomized Design (CRD) with three treatments and four replications: P0 (fermentation without probiotics), P1 (fermentation with 3% MA-11 mixed with molasses), and P2 (fermentation with 3% Starbio). The observed variables included physical characteristics (color, aroma, and texture) and chemical composition (dry matter and pH). The findings indicated that fermenting with MA-11 combined with molasses and Starbio enhanced both the physical and chemical attributes of rice straw silage. In terms of physical characteristics, the fermented samples displayed a yellowish-brown hue, a mildly acidic scent, and a somewhat rough texture. From a chemical perspective, the dry matter percentage rose from 91.97% (P0) to 92.37% (P1) and 92.37% (P2), although this change was not statistically significant (P>0.05). At the same time, pH levels showed a notable decrease from 6.25 (P0) to 5.50 (P1) and 5.75 (P2). Thus, it can be concluded that the fermentation of rice straw utilizing MA-11 along with molasses and Starbio significantly influenced the quality of rice straw following the fermentation. This suggests that the fermentation method can enhance the physical and chemical qualities of rice straw, thereby boosting its potential value as an animal feed component.
Assessment of Soil Macrofauna Diversity in Rice Fields and Dry Lands in Panti District, Jember Regency Mutmainnah, Laily; Ramdhani, Dimas Verdian; Setiawati, Tri Candra
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.v26i1.11613

Abstract

The variety of soil macrofauna serves as a biological indicator to assess the sustainability of land, especially in farming areas. Soil macrofauna are essential in the nutrient cycle. Macrofauna significantly contribute to the decomposition of soil litter into organic materials. Environmental factors affect the presence of soil macrofauna. Important environmental factors include soil pH, soil temperature, and soil organic carbon content. Differences in these three factors are directly visible in agricultural lands, particularly between rice paddies and drylands. Rice paddies are actively cultivated and flooded agricultural lands. Meanwhile, drylands are agricultural lands that are not actively cultivated. The author intends to explore the variety of soil macrofauna in two distinct land settings. Additionally, the author seeks to assess how variations in land conditions impact the diversity of soil macrofauna. Samples of soil were collected from eight sites located at elevations between 91 and 600 meters above sea level, which included four rice fields and four dryland areas. The study examined several factors, such as soil temperature, soil pH, soil organic matter, and the biodiversity of soil macrofauna. Soil temperature was measured with a soil thermometer. The soil pH was assessed using a pH meter, while soil organic matter was evaluated with the Walkey and Black technique. Observations of soil macrofauna were carried out employing hand sorting and the Berlesse funnel extraction method. The biodiversity of soil macrofauna was determined using the Shannon's Weaver Diversity Index and the Margalef Species Richness Index equations. The findings indicated that soil temperature varied from 23.47 to 27.60 degrees Celsius, soil pH varied from 4.65 to 6.72, and the percentage of soil organic matter ranged from 1.66 to 3.62%. These three elements displayed a negative relationship with the diversity of soil macrofauna, while positively correlating with the richness of soil macrofauna species.
Antibacterial Activity of Papaya Fruit (Carica papaya L) Ethanol Extract Against Escherichia coli Korisano, Jendri; Ivonne Mona Selly Panjaitan
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.v26i1.11646

Abstract

The increasing occurrence of antibiotic resistance highlights the critical necessity to investigate other antibacterial options, especially those originating from natural materials. Papaya (Carica papaya L.) is a tropical species recognized for having multiple bioactive substances that may exhibit antibacterial properties. The study aimed to assess the antibacterial activity of papaya fruit pulp extract at concentration of 40%, 50% and 60% against Escherichia coli with four replications. The extract was prepared using an appropriate extraction technique and evaluated through an in vitro antibacterial assay. Antibacterial activity was determined by measuring the inhibition of bacterial growth in comparison with a control group. Findings revealed that papaya fruit pulp extract exhibited strong inhibitory effects against Escherichia coli. There was no significant difference between concentration (p value = 0.83). The result indicates that papaya fruit pulp may represent an alternative source of antibacterial compounds and support its further development for antimicrobial applications. This study expands the scientific understanding of papaya fruit pulp as a promising natural antibacterial resource.
Relationship Between the Duration of Haemodialysis and the Nutritional Status of Chronic Kidney Failure Patients in Kupang City Gaol, Easter Tiur Lumban; Nugroho, Teguh Dwi; Damanik, Efrisca M.; Lada, Christina Olly
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.v26i1.11662

Abstract

Hemodialysis is a treatment that begins once a person is identified as having end-stage chronic kidney disease (CKD) and will continue for the duration of their life or until the individual has a kidney transplant. Nevertheless, many CKD patients receiving hemodialysis often face issues with malnutrition. This research aimed to explore how the length of time spent on hemodialysis affects the nutritional health of CKD patients in Kupang City. The study used an observational analytical method with a cross-sectional approach through direct interviews and Body Mass Index (BMI) measurements. Sampling was conducted using consecutive sampling with 110 patients, and analysis was performed using the Chi-Square test. The findings revealed that a large portion of participants fell within the age range of 41 to 60 years (47.3%) and that most were male (57.3%). Hypertension emerged as the most prevalent comorbidity, affecting 32.9% of the subjects. A significant number of individuals received hemodialysis two times a week (84.5%) and had been undergoing this treatment for over 24 months (37.3%). The bivariate analysis indicated no notable connection between the length of hemodialysis and nutritional health as defined by BMI (P>0.05), yet a significant association was found between the duration of hemodialysis and nutritional health assessed via the Simple Nutrition Screening Tool (P<0.05). Consistent nutritional assessments using the Simple Nutrition Screening Tool are essential for all hemodialysis patients to identify malnutrition risks early, allowing timely and appropriate dietary interventions. It is recommended that patients focus more on their nutritional habits and follow dietary guidelines set by nutritionists to avoid malnutrition and its associated issues.
Genetic Diversity Analysis of Growth Differentiation Factor 9 (GDF-9) Exon 1 in Boerka Goats via PCR-RFLP Angel, Zarra Naomi; Maskur, Maskur; Muhsinin, Muhammad
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.v26i1.11667

Abstract

This study aims to identify polymorphisms in the Growth Differentiation Factor-9 (GDF-9) gene in Boerka goats using the PCR-RFLP method. A total of 60 blood samples were used for DNA isolation. Amplification of the GDF-9 gene Exon 1 produced a 462 bp fragment. Genetic diversity analysis using the HhaI restriction enzyme revealed three genotypes: GG (462 bp), GA (462, 410, and 52 bp), and AA (410 and 52 bp). The frequency of the G allele (0.925) was found to be higher than the A allele (0.075), with a dominant GG genotype frequency of 0.867. The Polymorphic Information Content (PIC) value was 0.129, indicating a low level of genetic diversity in the studied population. Descriptive analysis showed that the heterozygous GA genotype tended to have a higher average litter size than the homozygous genotypes. These results indicate that the GDF-9 gene is polymorphic in Boerka goats and has the potential to be used as a molecular marker in breeding programs.
Community Structure of Gastropods in the Intertidal Zone of Tanjung Kelor Beach, Sekotong, West Lombok, Indonesia Febriyani, Lisa; Bachtiar, Imam; Japa, Lalu
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.v26i1.11679

Abstract

Tanjung Kelor Beach, located in Sekotong, West Lombok, is an intertidal area with high biological potential that supports coastal tourism development. However, information regarding the community structure of Gastropods in this area remains limited. This study aimed to analyze the abundance and species composition of Gastropods, family richness, and ecological indices: species diversity, evenness, and dominance indexs. Data were collected using the transect–quadrant method, with three transects placed perpendicular to the shoreline and a total of 30 quadrats measuring 1 × 1 m². The results revealed the presence of 17 Gastropod species belonging to 9 families, with a total of 1,209 individuals recorded. The community of Gastropod composition was dominated by the family Strombidae (43.09%) at the family level and Strombus urceus (15.72%) at the species level. Nerita undata (8.44%) wasa species consistently found at all stations across three substrate types: muddy, sandy, and seagrass beds. The diversity index (H’) was categorized as moderate (1.75–1.93), the evenness index (E) ranged from moderate to high (0.70–0.93), while the dominance index (C) indicated low values (0.17–0.20). These findings are expected to provide a scientific basis for coastal ecosystem conservation management and the development of educational tourism at Tanjung Kelor Beach.
Morphometrics of Swimming Crabs (Portunus pelagicus) in Lombok Waters Supiani, Lilik; Karnan , Karnan; 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.v26i1.11685

Abstract

Crab catches that do not meet standards have the potential to disrupt the population structure and reduce the size of the catch, so morphometric information is important as a basis for sustainable management and utilization; moreover, in Lombok waters, morphometric reference data is declared unavailable, while regulations also stipulate a prohibition on catching females laying eggs and the size of the carapace width is suitable for catching >10 cm. This study aims to analyze the morphometric characteristics of Portunus pelagicus crabs landed in Teluk Ujung (n=75) using a descriptive-exploratory approach to describe the size distribution. The results showed that harvested swimming crabs had weight range of 47-87 g (60%), a carapace width of 10-11 cm (24%), a total carapace width of 13–14 cm (19%), and a carapace length of 6-7 cm (27%). The parameters of the appendix also vary, including the width of the claw prop 2-3 cm (74%), the length of the prop 10-11 cm (15%), the height of the propous 1-2 cm (57%), the length of the claw dactylus 4-5 cm (29%), the width of the claw of 1-2 cm (57%), the length of the claw of 5-6 cm (29%), the width of the 4th leg of the claw 0.5-1 cm (74%), the length of the 4th leg of the claw 2-3 cm (50%), the width of the dactylus of the swimming leg 1-2 cm (72%),  Length of the dactylus of the swim leg 2-3 cm (73%), the width of the abdomen 1-2 cm (41%), the length of the telson 0.5-1 cm (59%). These findings present size profiles as basic data on local stocks as well as enrichment materials for zoology learning, and can be used to strengthen more selective fishing practices and are in line with the provisions of catchable size.
Ethnobotany of Coconut (Cocos nucifera) and Bayur (Pterospermum javanicum) Trees as Building Materials in Jabang Bayi Kebon Village, Serang, Banten Ulhaq, Indriati Dhiya; Salsabilah, Fathiyah; Awalunnisa, Syahla; Mafilido, Revalia Artha; Erfiyana, Rina; Fitriana, Desi Eka Nur
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.v26i1.11540

Abstract

Ethnobotany of timber is a field of study that examines the relationship between humans and the use of plants as building materials. However, changes in lifestyles, particularly among the younger generation, have led to a decline in knowledge about the use of local plants as building materials. This situation raises concerns about the loss of ethnobotanical knowledge of woodworking, which has been passed down through generations. This study aims to examine the utilization of coconut (Cocos nucifera) and bayur (Pterospermum javanicum) trees as building and furniture materials by the community of Jabang Bayi Kebon Village, Serang, Banten. A qualitative descriptive method with an ethnobotanical approach was applied through field observations, semi-structured interviews, and documentation. The results show that coconut trees are mainly used for house structures such as walls, roofs, and fences, while bayur wood is utilized for furniture production by local craftsmen. The utilization of these plant species is based on local knowledge, material availability, and traditional practices passed down through generations. This study highlights the important role of local knowledge in supporting the sustainable use of plant resources.
Narrative Review: Ethnomedicinal Study of Skin Diseases Diba, Asmara Yauma Putri Farah; Mukhlishah, Neneng Rachmalia I.; Sukenti, Kurniasih
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.v26i1.11693

Abstract

Infectious skin diseases in West Nusa Tenggara Province are listed as one of the ten most widespread diseases. Treatment for skin disorders can involve both medical and non-medical approaches. Ethnomedicine offers a way to investigate the applications of medicinal plants and can serve as a first step towards the discovery of new drugs. The purpose of this article is to explore the types of plants used in traditional skin disease treatments. The research results found that plants that can be used for skin disease treatment are predominantly betel, galangal, and members of the Zingiberaceae family. Then, other plants are tobacco, nettle (Toxicodendron radicans), brotowali (Tinospora arisp), kanangas (Ximenia sp.), pomegranate (Punica granatum), grepek (Erythrina sp.), ciplukan (Physalis angulate), water lettuce (Nasturtium microphyllum), lily (Chlorophytum comosum), kesum (Polygonum minus), gelinggang (Cassia alata), cogongrass (Imperata cylindrica), neem (Azadirachta indica), papaya (Carica papaya), mahkota dewa (Phaleria macrocarpa), teki (Cyperus rotundus), lime (Citrus aurantiifolia) and kedondong pagar (Lannea coromandelica), jackfruit (Artocarpus heterophyllus), rice (Oryza sativa), tamarind (Tamarindus indica), coconut milk (Lannea coromandelica), lamtoro (Leucaena leucocephala), sambiloto (Andrographis paniculata), frangipani (Plumeria alba), iodine (Jatropha multifida), and binahong (Anredera cordifolia). The use of medicinal plants by various communities significantly impacts public health and ecosystems. Utilizing these plants can reduce dependence on synthetic drugs and mitigate negative impacts on the environment. Ethnomedicine can further enhance the understanding and appropriate and safe application of medicinal plants, while supporting the preservation of community customs and heritage.
Exploration of Orchids and Ferns on the Aik Berik Hiking Trail in Mount Rinjani National Park Pazira, Ayun; Zulkifli, Lalu; Raksun, Ahmad; Mertha, I Gde
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.v26i1.11741

Abstract

Indonesia is recognized as a country rich in biodiversity, boasting an extensive variety of plants and animals. Lombok Island, one of Indonesia's islands, showcases a significant level of biodiversity. This island is home to the Mount Rinjani National Park. Within the TNGR region, Aik Berik Village serves as the designated hiking route for Mount Rinjani National Park, featuring a remarkable variety of plant life, such as orchids and ferns. Nonetheless, studies exploring the orchids and ferns along the Aik Berik hiking path remain scarce, and no one has examined them across different elevations, making this research essential. This study aims to determine the types of orchids and ferns and their distribution on the Aik Berik hiking trail of Mount Rinjani National Park. The method used in this study is the cruise method. The findings of this research identified 14 genera and 24 species of orchids, which include 17 epiphytic orchids and 7 terrestrial orchids, totaling 940 individuals. The orchid with the broadest distribution is Pinalia multiflora, located at altitudes between 1,000 and 2,500 meters above sea level, with a count of 100 individuals. Conversely, the least common species is Dendrobium rindjaniense, which exists at heights of 2,000 to 2,500 meters above sea level, totaling only 5 individuals. The study also discovered 15 families, 22 genera, and 31 species of ferns, comprising 25 terrestrial ferns and 6 epiphytic ferns, amounting to 8,165 individuals in total. The fern species that is distributed the most is Macrothelypteris torresiana, found at altitudes of 1,000 to 2,500 meters above sea level, with 1,150 individuals recorded. In contrast, the species with the least distribution is Huperzia selago, which appears at altitudes between 1,000 and 2,000 meters above sea level, with just 20 individuals present.

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