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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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Identification of Ornamental Flower Plants in The Blooms Garden Bali as a Learning Resource for High School Biology Ningati, Rachma Kusuma; Hanik, Nur Rokhimah
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8508

Abstract

The Blooms Garden Bali is a tourist attraction featuring various ornamental flowers that can serve as a learning resource for high school biology students. This research aims to identify the ornamental flower species in The Blooms Garden Bali and assess their potential as an educational resource for biodiversity studies. The study employed an exploratory method, involving direct observation and identification of plant species using reference materials and digital tools. Data collection was conducted over five months, from July to November 2024. The results identified 22 ornamental flower species belonging to 14 families and two classes. The findings indicate that these plants can be utilized in biology learning, particularly in biodiversity topics, to enhance students' understanding through real-world applications. The research contributes to the development of interactive learning materials, such as educational presentations and e-modules, aligning with modern digital learning approaches. This study highlights the importance of integrating local biodiversity into biology education, fostering students’ environmental awareness and scientific literacy.
Formulation and Evaluation of a Sheet Mask with Ethanol Extract of Mengkudu (Morinda citrifolia L.) as a Moisturizing Agent Ginting, Indra; Mukhali, Hassan Basri bin; Abas, Mohd Ihsanuddin Bin; Aji, Andrey; Rachelli, Rachelli; Rudang, Singgar Ni
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8551

Abstract

Facial skin often faces issues such as acne, dullness, and dryness. Sheet masks are one of the cosmetic care products that can help maintain facial skin hydration. Noni leaves (Morinda citrifolia L.) contain secondary metabolite compounds such as alkaloids, tannins, saponins, and flavonoids, which can act as antioxidants.  To determine whether noni leaf ethanol extract can be formulated into a sheet mask preparation and its effectiveness as a moisturiser. The research involved several steps: plant identification/determination, sample collection, extraction using the maceration method with 70% ethanol solvent, formulation of the sheet mask preparation, and evaluation, including organoleptic tests, homogeneity, pH, stability, irritation, and moisture effectiveness testing using a skin analyser. Sheet mask preparations with 5%, 7%, and 10% concentrations were found to be thick, homogeneous, with pH ranging from 4.42 to 5.72, non-irritating, stable during storage, and increased skin moisture by 78.94% for F1, 84.0% for F2, and 85.15% for F3. Noni leaf ethanol extract can be formulated into sheet mask preparations and is effective in moisturising the skin. Keywords: Noni leaf extract, sheet mask, moisture.
Water Pollution Index in the Ekas Bay Floating Net Cage Area as Part of Sustainable Aquaculture Diniarti, Nanda; Junaidi, Mohammad; Setyono, Bagus Dwi; Asri, Yuliana; Dwiyanti , Septiana
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.7639

Abstract

Fish cultivation using the Floating Net Cultivation (FNC) system had the potential to create nutrient enrichment around the cultivation location. The large amount of nutrient input in marine waters can cause algae blooms also known as eutrophication. If this condition continues to occur, biota diversity will decrease and cause the seas to lose their function, so before that happens, it is considered to periodically monitor the pollution index in the Ekas Bay FNC area. The aim of this study is to analyze the pollution index in FNC area in the waters of Ekas Buana Village. The value obtained can be used as a basis for managing the area to create sustainable and sustainable use. The research was conducted in Ekas Bay, Ekas Buana village, East Lombok district on June-September 2023. The parameters observed were physical and chemical water quality parameters. The data that has been collected will be analyzed descriptively and presented in the form of tables and graphs. The parameter value obtained was the only one that passed the quality standard based on PP No. 22 of 2021, namely orthophosphate. Phosphate is indeed abundant in marine waters, but it will cause blooming if the total supply of ammonia nitrogen is excessive. From the pollution index, it was found that the East station, which is the coastal littoral area, is classified as moderately polluted, while the other stations are classified as lightly polluted. The sources and quantities of the pollution need to be identified to facilitate control and prevent further pollution.
Isolation and Characterization of Thermophilic Bacteria as Producing Enzyme Amylase from Kepanasan Hot Springs In Tapung Hulu, Kampar, Riau Herwanda, Fadia Rezika; Linda, Tetty Marta
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.7888

Abstract

Thermophilic bacteria are a group of bacteria that can live and survive at high temperatures ranging from 45°C-80°C.  Thermophilic bacteria are the best choice as a producer of thermostable enzymes that can endure high temperatures used in various industrial fields including the textile industry, food industry, detergent industry, and pharmaceutical industry. This study aims to isolate, characterize, and test the activity of thermostable amylase enzyme from thermophilic bacterial isolates in Kepanasan hot spring in Tapung Hulu District, Kampar Regency, Riau. Characterization of thermophilic bacterial isolates is macroscopic, physiological, and biochemical tests: Triple sugar iron agar, Sulphur indole motility, symmons citrate, and catalase. The results of study obtained ten isolates of thermophilic bacteria consisting of six isolates from hot water samples and four isolates from soil sediments isolated at temperatures of 45°C and 50°C using a nutrient agar (NA) medium. The results of Gram staining were obtained one Gram-positive isolate and nine Gram-negative isolates. Positive catalase test results, negative indole and motility tests for ten isolates. The results of the amylase enzyme activity test obtained three bacterial isolates, namely BTA 6, BTT 2 and BTT 4 with the highest amylolytic index of 1.32 produced by BTT 2 isolate at an incubation temperature of 50°C with a starch concentration of 1%.
Literature Review: Risk Factors of Stunting in Children Under Five Years Old and How to Prevent Amatullah, Tazkiyah Arafah; Sang Ayu Kompiyang Indriyani
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): 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.v24i1b.7911

Abstract

Stunting is a health problem if a child's height is not appropriate for their age, especially in developing countries, including Indonesia. UNICEF notes that two main factors causing stunting are inadequate food intake and infection. This issue is very crucial to consider because of the implications is not only short-term but also has an impact on future excellence in human resources.. This investigation aims to identify risk factors that raise the possibility of stunting in kids younger than five, and evaluate the most effective intervention in reducing the prevalence of stunting, especially in Indonesia. Using the literature review method, this study gathered information from publications in the last 10 years through databases such as PubMed and Google Scholar. The keywords that we used were ‘Stunting, Risk Factor, Under five years’. The inclusion criteria were journals that provided information about risk factors for stunting in kids younger than five and were published in Indonesian and English. Some of the research results found were various factors that have an association with stunting including economic status, maternal education, low birth weight (LBW), exclusive breastfeeding, and a history of infectious diseases in children. Numerous investigations have demonstrated that infants born with low birth weight have twice the risk of being stunted. In addition, children from low income families and with mothers who have low education levels were also more prone to stunting. Stunting prevention can be focused on exclusive breastfeeding followed by complementary feeding after 6 months of age, improving access to sanitation and health facilities, and conducting nutrition specific and nutritionsensitive interventions.
Reproductive Biology of Frigate Tuna (Auxis thazard Lacepède, 1800) Caught by Fishermen in West Sumatra Waters Nofrita, Nofrita; Nurdin, Jabang; Bintari, Andhini Nur
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8004

Abstract

The frigate tuna (Auxis thazard) is important to the fishing industry in West Sumatra. The increasing demand for frigate tuna causes this fish to continue to be exploited. Exploitation carried out continuously can reduce frigate tuna production, so research needs to be done. The research was conducted to: (1) Know the growth pattern and factor condition of frigate tuna (A. thazard) in West Sumatra waters; (2) Know the reproductive biology of frigate tuna (A. thazard). Samples were collected from fishermen's catch in the waters of West Sumatra. Random sampling was conducted, and samples were measured for length and weight, followed by dissection to ascertain sex ratio, gonadal maturity level, gonadal maturity index, and fecundity. The results indicated that the fish's length ranged from 350 to 475 mm, with an average of 401.48 mm, and their weight ranged from 408 to 1,339 grams, with an average of 755.8 grams. The growth pattern is identified as positive allometric (b>3), indicating that weight gain surpasses length increases. The condition factor is in stable condition with an average of 1.24. The sex ratio is in an unbalanced condition with a ratio of males and females of 0.9: 1. The level of gonad maturity obtained is GML III and GML IV. The gonad maturity index of male fish ranged from 1.71 to 3.04 and female fish from 1.28 to 2.50. Estimated fecundity ranged from 261,468 to 2,775,590 grains. Based on several factors included in this study, the reproductive biology of frigate tuna in the waters of West Sumatra is favorable.
Potensi of Tobacco Stem Insecticide as Pest Control in Crops Wahyuni, Srilah Nora; Sudarmawan, A. A.; Sudantha, I Made
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8053

Abstract

Tobacco is one of the most widely cultivated commodities in West Nusa Tenggara (NTB), especially Virginia tobacco. The leaf part is utilized as the main raw material in the cigarette industry. However, other parts of the plant, such as tobacco stems, are generally not used and only become agricultural waste that has no economic value, and has the potential to pollute the environment. In fact, tobacco stems have great potential as a vegetable insecticide that has proven effective in controlling various types of pests. This study aims to explore the potential of tobacco stems as a vegetable insecticide in pest control. The method used is a literature review by referring to various sources, including scientific journals, books, news, and related research and implementation. The results showed that tobacco stems contain secondary metabolite compounds, such as nicotine, saponins, flavonoids, and terpenoids. These compounds function as contact poisons, repellents, and disruptors of pests' metabolic, nervous, and respiratory systems. As a result, these compounds can cause body damage, inhibit the life cycle, and even death in insect pests, such as Aphis sp. aphids, Bemisia tabaci, Plutella xylostella, and other pests. In conclusion, tobacco stem extract is an effective solution for controlling pests in cultivated plants. Its use can reduce the population and intensity of pest attacks due to the content of chemical compounds that are toxic to insects.
Morphological Identification of Major Sponge in Tanjung Senja Water Moramo District, South Konawe Regency Mangurana, Wa Ode Intiyani; Annastasia, Nurhuda; Patiung, Seventry Meliana; Arsal, La Ode Muh; Wahyudi, Adi Imam
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8133

Abstract

Sponge organisms are primitive organisms originating from the phylum porifera. These organisms have pores throughout their bodies and have filter feeder properties. Sponges have habitats around coral reef ecosystems, seagrass habitats and in shallow waters. In Tanjung Senja Waters, there are stone mining activities by the community so that research is needed as initial data to determine the types of major sponges in Tanjung Senja waters. On the other hand, apart from being a component of coral reefs, sponges are also natural materials that have the potential to be bioactive compounds that can be developed in the pharmaceutical field. The research was carried out using the free collection method and the sampling point was selected based on the presence of sponges. Water quality parameters were observed in situ or direct observation including temperature, salinity, pH and brightness data.  This study found 3 types of major sponges, namely Callyspongia aerizusa, Stylotella aurantium and Xestospongia sp. This stone mining activity still does not affect the growth of sponges in the waters, this is marked by the results of checking the environmental parameters that have been carried out, it can be concluded that the existence of this sponge is influenced by environmental parameters such as temperature 30oC, current velocity 4.17cm/s, depth 5m, brightness 100%, salinity 33‰ and pH 8, this condition is still at the threshold of quality standards for marine life based on Kep-MENLH No. 51 of 2004.
Tapanuli Orangutan Feeding (Pongo tapanuliensis) In Sitandiang Hamlet, Bulu Mario Village, Sipirok District, South Tapanuli Sinaga, Adinda Patricia Adelina; Setyawatiningsih, Sri Catur
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8243

Abstract

The tapanuli orangutan (Pongo tapanuliensis) is an endemic orangutan species found exclusively in the Batang Toru forest ecosystem, North Sumatra. Studying their natural diet is crucial to supporting conservation efforts for this critically endangered species. This research was conducted in Sitandiang Hamlet, Bulu Mario Village, Sipirok Sub-district, South Tapanuli Regency, with the aim of inventorying the types of food consumed by tapanuli orangutan and analyzing their feeding patterns in their natural habitat. The methods used included field surveys, interviews with local communities, and documentation. The findings revealed that tapanuli orangutan utilize a variety of plant resources, such as fruits, leaves, flowers, and tree bark. Their feeding patterns show a reliance on the availability of seasonal fruits, with an adaptation to consuming vegetative plant parts during off-fruit seasons. Local community knowledge about orangutan food sources also plays an important role in preserving their habitat. This study provides insights into ecosystem-based conservation management and emphasizes the importance of strengthening collaboration with local communities to support the sustainability of tapanuli orangutan populations in this region.
Activity of Ethanol Extract and Fraction Products Leaves Manilkara kauki as Inhibitors Tyrosinase Enzyme Zakri, Dwika Febriana; Putri, Dwi Hilda; Irdawati, Irdawati; Angelina, Marissa
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8295

Abstract

Currently, cosmetics made from chemical (synthetic) ingredients are in demand by the public because they can whiten the skin by inhibiting the formation of melanin, but the lack of public knowledge about the impact of excessive use has encouraged the need for natural ingredients as tyrosinase inhibitors that are safer than synthetic ingredients. This study aims to test the potential of secondary metabolite compounds in M. kauki leaves as inhibitors of tyrosinase enzyme activity by determining the IC50 value. This assay utilizes L-tyrosine and arbutin as positive control substrates, with UV-Vis spectrophotometric absorption measurements taken at a wavelength of 470 nm. The findings revealed that the buthanol fraction exhibited the highest tyrosinase enzyme inhibition, with an IC50 of 189,72 μg/mL. This was followed by the ethanol extract with an IC50 of 191,97 μg/mL, the hexane fraction at 381.50 μg/mL, and the ethyl acetate extract with an IC50 of 448.986 μg/mL. All samples displayed strong inhibitory activity, outperforming arbutin as a positive control, which had an IC50 value of 831.51 μg/mL.

Page 171 of 252 | Total Record : 2520

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