cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
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 2,520 Documents
 193   194   195   196   197 
Improving Kopay Chili Seed Germination Through Priming with Eichhornia crassipes Root Extract Suwirmen, Suwirmen; Noli, Zozy Aneloi; Emelta, Citra
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.v25i1.9419

Abstract

Kopay chili (Capsicum annuum L. cultivar Kopay) is a local Indonesian cultivar valued for its distinctive flavor, economic potential, and adaptability to tropical climates. However, one of the major challenges in its cultivation is the low and uneven germination rate, which can affect crop uniformity and productivity. This research investigates the effect of priming with water hyacinth (Eichhornia crassipes (Mart.) Solms) root extract on the germination of kopay chili seeds (Capsicum annuum L. cultivar Kopay). The objective was to evaluate the influence of soaking duration, extract concentration, and their interaction on seed germination and early seedling growth. A Completely Randomized Design (CRD) with two factors and three replications was employed. The first factor was soaking duration: 3, 6, 9, and 12 hours; the second factor was extract concentration: 0% (control), 5%, 10%, 15%, and 20%. The results showed that a soaking duration of 3 hours significantly improved germination time, growth rate, vigor index, and root length. Extract concentration alone had no significant effect on any measured parameter. However, the interaction between soaking duration and extract concentration significantly affected germination time, vigor index, root length, and seedling dry weight. These findings suggest that short-term seed priming using water hyacinth root extract can enhance germination and early growth of kopay chili under certain conditions.
Distribution Patterns of Soil Insects Across Microhabitat Types in Lemor Botanical Garden, East Lombok, Indonesia Suliati, Suliati; Artyasa, I Putu; Ilhamdi, Mohammad Liwa
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.v25i3.9427

Abstract

Soil insects play an important role as indicators of ecosystem balance, however information about soil insects especially the distribution patterns of soil insects across microhabitat in the Lemor Botanical Gardens is still limited. This research aimed to analyze the distribution patterns of soil insects across various types of microhabitats in the Lemor Botanical Garden. This type of research is descriptive exploratif where soil insect samples were taken using the pitfall traf method, soil drill and continued using berlese tullgren. Sampling was carried out for 3 repetitions at two stations, namely station 1 in the Ex Situ area and station 2 in the In Situ area of the Lemor Botanical Garden. Each station consists of 10 sampling plots where each plot consists of 3 microhabitats namely litter, soil surface and subsurface. The research data were analyzed using the Morisita Index. The results indicated that the distribution of soil insects showed variation across microhabitats: in the litter microhabitat, 14% of individuals exhibited a clumped distribution and 1% an uniform distribution; in the soil surface microhabitat, 32% were clumped and 2% uniform distributed; and subsurface microhabitats, 7%  were clumped and 1% uniform distributed. These findings suggest that the dominant distribution pattern of soil insects across all microhabitats is clumped followed by a lesser degree of uniform distribution. The research is expected to provide insights to the public regarding the distribution patterns of soil insects across various types of microhabitats in the Lemor Botanical Garden.
Analysis of Production Costs for White Oyster Mushroom (Pleurotus ostreatus) Cultivation at UMKM Agro Jamur Lombok, Kekeri Village, Gunungsari District, West Lombok Regency Fadli, Fadli; Jupri, Ahmad; Maelia, Wina; Rozi, Tapaul; Hidayati, Lilik
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.v25i1.9436

Abstract

Indonesia with its tropical climate, boasts abundant agricultural potential, including on Lombok Island. UMKM Agro Jamur Lombok is a promising white oyster mushroom cultivation business in this region, driven by high market demand. This research aims to analyze the production cost structure and business feasibility of white oyster mushroom cultivation at UMKM Agro Jamur Lombok. The study employed a descriptive quantitative method, collecting data through observation, interviews, questionnaires, and literature reviews. Data analysis included calculations of production costs (fixed and variable), revenue, income, and business feasibility using the R/C ratio, B/C ratio, and Break-Even Point (BEP). The research results indicate that UMKM Agro Jamur Lombok's total production cost in 2024 was IDR 197,100,000, with a revenue of IDR 336,000,000, yielding an income of IDR 138,900,000. The feasibility analysis showed an R/C ratio of 1.7047 and a B/C ratio of 0.7047, indicating that the business is feasible and profitable. Although there was a decrease in production due to damaged grow bags, the R/C ratio (1.6536) and B/C ratio (0.6536) after the decline still demonstrate business viability. However, there is a discrepancy between the BEP selling price of grow bags (IDR 8,213/unit) and the actual selling price in the field (IDR 4,000/unit), which requires further review regarding cost efficiency or market dynamics.
Species Diversity of Soil Insect in the Lemor Botanical Garden, East Lombok, Indonesia Sari, Yuli Novita; Artayasa, I Putu; Ilhamdi, Mohammad Liwa
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): 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.v25i2.9438

Abstract

Soil insects play an important role as environmental indicator organisms, ecosystem balancers, and decomposers of organic matter. This study aims to determine the diversity of soil insects in the Lemor Botanical Garden, East Lombok. The diversity of flora and fauna in this area makes it suitable as a conservation site that also serves educational purposes. Sampling was conducted using pitfall traps, soil borers, and Berlese-Tullgren funnels at two stations: station 1 (ex situ) and station 2 (in situ). Data were analyzed using the Shannon-Wiener diversity index. The results showed that 44 species of soil insects were found, belonging to 11 orders and 23 families, with a total of 970 individuals. The most dominant species belonged to the family Formicidae, with 257 individuals. Overall, the soil insect diversity index on litter was H' = 1.778, on the soil surface H' = 2.265, and in the soil layer H' = 1.098. These results indicate that the diversity level of soil insects in the Lemor Botanical Garden is moderate and varies across habitat layers. This moderate diversity reflects a relatively stable ecosystem and supports the importance of Lemor Botanical Garden as a site for conservation and environmental education.
Inflammatory Response of Tumor Necrosis Factor-alpha (TNF-α) in Incised Wounds of White Rats (Rattus norvegicus) Induced by Aloe vera Extract Pauzan, Pauzan
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): 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.v25i2.9441

Abstract

Incised wounds are common injuries that trigger an inflammatory response, in which Tumor Necrosis Factor-alpha (TNF-α) plays a crucial role in the pathogenesis. Aloe vera has long been recognized for its wound-healing potential; however, its molecular mechanisms particularly in modulating TNF-α expression remain incompletely understood. This study aims to investigate the effect of Aloe vera extract on TNF-α expression in incised wounds of white rats. This experimental study employed a controlled group design, involving a positive control group (K+), a negative control group (K−), and a treatment group (P), each consisting of five white rats. Incised wounds were created on the dorsum of the rats, and the treatment group received topical Aloe vera extract. TNF-α expression was evaluated using immunohistochemical methods on days 3, 7, and 14 post-wounding. The treatment group that received Aloe vera extract showed a significant decrease in TNF-α expression compared to the negative control group on days 7 and 14. Aloe vera extract modulates TNF-α expression in incised wounds of white rats, indicating its potential as a therapeutic agent in wound healing through anti-inflammatory mechanisms.
Pre-pubertal Growth of PE (Peranakan Ettawa) Goat and it’s Crosses with Boer Buck in Lombok Island, Indonesia Fitriani, Baiq Mesy Darita; Ashari, Muhammad; Hidjaz, Tahyah; Pribadi, Lalu Wira
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): 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.v25i2.9443

Abstract

The research which was designed to investigate the pre-pubertal growth performance of PE (Peranakan Ettawa) Goat and Boer >< PE crossbred kids under different birth type, was carried out by observing the weaning weight (BS90), weight at puberty (BB160) and pre-pubertal daily weight gain (PBBHpra-pubertas) of 43 Peranakan Ettawa (PE), 35 Boerawa Grade-1 (B.PE), 39 Boerawa Grade-2 (B2.PE), and 20 Boerawa Grade-3 (B3.PE) kids, each of which consists of single and twins birth type, determined purposively for the population of each genotype on 2 goat farms in Lombok Island. Data were obtained by directly measurement on body weight at weaning and puberty, then the pre-pubertal growth are calculated. The results showed, that the average pre-puberty growth performance of PE goats and their crosses with Boer, based on the daily weight gain (PBBHpre-pubery) achieved, is 0.064±0.019 kg for PE kid goats and 0.089±0.025 kg for Boer >< PE crosses, each depending on the type of birth. The group of kid goats with the highest growth rate is shown by the Single Birth of B.PE group (50% Boer, 50% PE) (KT) with a PBBHpre-pubertal achievement of 0.117±0.032 kg. Grading-up of PE goats through crosses with Boer buck in this study, can increase the average pre-puberty growth performance of their crossbred kids by 29.09%.
Diversity of Mollusks (Gastropods and Bivalves) in The Bagek Kembar Mangrove Ecosystem Essential Area, Sekotong Handrayani, Handrayani; Idrus, Agil Al; Jamaluddin, Jamaluddin
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.v25i3.9454

Abstract

The Bagek Kembar Mangrove Ecosystem Essential Area (EEA) in West Lombok is a critical habitat that supports various aquatic organisms, including mollusks. This study aimed to identify and analyze the diversity of mollusks from the classes Gastropoda and Bivalvia, within the Bagek Kembar mangrove ecosystem. Sampling was conducted from February to April 2025 using the quadrat transect method, and data were analyzed using the Shannon-Wiener diversity index (H′), Pielou’s evenness index (E), and Simpson’s dominance index (C). A total of 2,368 individual mollusks were recorded, comprising 20 species: 16 Gastropods and 4 Bivalves. The family Potamididae from the class Gastropoda was the most dominant, with Cerithidea cingulata being the most abundant species. Gastropods exhibited moderate diversity (H′ = 2.20), high evenness (E = 0.79), and low dominance (C = 0.15), while Bivalves showed low diversity (H′ = 0.61), moderate evenness (E = 0.44), and moderate dominance (C = 0.70). These results indicate that mollusk diversity in the area is at a moderate level. The findings highlight the importance of mangrove ecosystems in maintaining mollusk diversity and support their use as bioindicators in environmental monitoring and local conservation strategies.
Characterization of Cellobiose Dehydrogenase (CDH) Enzyme in Trametes versicolor strain TRAMS Munif, Tri Haidar; Rahmawan, Marjori Bethania; Abdulgani, Nurlita; Prasetyo, Endry Nugroho
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.v25i3.9474

Abstract

Cellobiose dehydrogenase (CDH, EC 1.1.99.18) is an enzyme classified under the oxidoreductase group. CDH has been widely utilized in various fields, including healthcare such as in wound dressing and in the energy sector for bioenergy production. To support these industrial applications, it is necessary to investigate the characteristics of CDH to enhance process efficiency. Therefore, this study aims to characterize CDH produced by the fungus Trametes versicolor strain TRAMS. The research involved constructing a CDH production curve followed by enzyme activity assays, protein content determination, isoelectric point (pI) analysis, and kinetic studies using Michaelis-Menten and Lineweaver-Burk plots. The results showed that the enzyme exhibited an activity of 3.441 U/mL on the 8th day of production. The enzyme's specific activity reached 61.57 U/mg at the 80% ammonium sulfate fraction, with an isoelectric point at pH 4. Enzyme kinetics based on the Michaelis-Menten plot revealed a Vmax of 6.7 µM/min and a Km of 3.35 µM, while the Lineweaver-Burk analysis indicated a Vmax of 9.625 µM/min and a Km of 0.23 µM.
Comparative Efficacy of Wet Wipe Preservatives: Antimicrobial Performance to Inhibit Microbial Growth Hakim, M. Arif Lukman; Adi Permadi; Erna Astuti; Farahidah Mohamed
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): 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.v25i2.9477

Abstract

The global market for wet wipes has seen significant growth in the past decade, establishing them as a popular product for personal care and household use. However, their high water and cellulose content makes them vulnerable to contamination by pathogenic microorganisms, which can cause changes in both their physical and chemical properties. This study aims to evaluate the efficacy of six preservative formulations in preventing microbial contamination in wet wipes. The formulas tested included: Formula 1 (F1) with phenoxyethanol and benzalkonium chloride; Formula 2 (F2) with phenoxyethanol, sodium benzoate, and potassium sorbate; Formula 3 (F3) with phenoxyethanol and caprylyl glycol; Formula 4 (F4) with polyaminopropyl biguanide and caprylyl glycol; Formula 5 (F5) with sodium benzoate, potassium sorbate, and cetylpyridinium chloride; and Formula 6 (F6) with propylene glycol and chlorphenesin. A 28-day challenge test was conducted using a multispecies inoculation technique, including bacteria, mould, and yeast. All formulas were initially sterile, as confirmed by sterility testing. The results showed that Formula F1 was the most effective, reducing microbial growth by over 6 log units within 14 days. Formulas F5 and F6 also demonstrated effectiveness, though microbial reduction in these formulas was slower, only reaching >6 log reduction by day 28. Formulas F2, F3, and F4 did not meet the required standards for mould and yeast reduction. These findings support the use of Formula F1 as the most reliable preservative combination, ensuring the safety and quality of wet wipes.
Using tilapia (Oreochromis mosambicus) as a bioindicator to determine mercury (Hg) levels in Lake Taliwang, West Sumbawa Regency 2025 Sumayyah, Hani; Khairuddin, Khairuddin; Yamin, M.
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): 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.v25i2.9507

Abstract

Mercury (Hg) is one of the most toxic heavy metals commonly found in aquatic environments, especially in areas affected by illegal gold mining. This study aims to determine the concentration of mercury in the flesh of tilapia (Oreochromis mossambicus) from Lake Rawa Taliwang and assess its safety for consumption based on BPOM Regulation No. 9 of 2022. Tilapia samples were purposively collected from two points around the lake and analyzed using a Mercury Analyzer at a detection wavelength of 253.7 nm. The analysis revealed that the mercury content in tilapia flesh was below 0.5 mg/kg, indicating that it remains within the safe consumption threshold for non-predatory fish. These findings demonstrate the potential of tilapia as a bioindicator for mercury pollution and provide relevant material to enrich environmental education, particularly on the impact of heavy metal contamination in aquatic ecosystems and food safety awareness.

Page 195 of 252 | Total Record : 2520

 193   194   195   196   197 

Filter by Year

2013 2026


Reset
Filter By Issues
All Issue Vol. 26 No. 1 (2026): Januari-Maret Vol. 25 No. 4 (2025): Oktober-Desember Vol. 25 No. 4b (2025): Special Issue Vol. 25 No. 4a (2025): Special Issue Vol. 25 No. 3 (2025): Juli-September Vol. 25 No. 2 (2025): April-Juni Vol. 25 No. 1 (2025): Januari - Maret Vol. 24 No. 4 (2024): Oktober - Desember Vol. 24 No. 3 (2024): July - September Vol. 24 No. 2b (2024): Special Issue Vol. 24 No. 2 (2024): April - Juni Vol. 24 No. 1 (2024): Januari - Maret Vol. 24 No. 1b (2024): Special Issue Vol. 23 No. 4 (2023): October - December Vol. 23 No. 3 (2023): July - September Vol. 23 No. 2 (2023): April-June Vol. 23 No. 2 (2023): Special Issue Vol. 23 No. 1 (2023): Special Issue Vol. 23 No. 1 (2023): January - March Vol. 22 No. 4 (2022): October - December Vol. 22 No. 3 (2022): July - September Vol. 22 No. 2 (2022): April - June Vol. 22 No. 1 (2022): January - March Vol. 21 No. 3 (2021): September - Desember Vol. 21 No. 2 (2021): Mei - Agustus Vol. 21 No. 1 (2021): Januari - April Vol. 20 No. 3 (2020): September - Desember Vol. 20 No. 2 (2020): Mei - Agustus Vol. 20 No. 1 (2020): Januari - April Vol. 19 No. 2 (2019): Juli - Desember Vol. 19 No. 1 (2019): Januari - Juni Vol. 18 No. 2 (2018): Juli - Desember Vol. 18 No. 1 (2018): Januari - Juni Jurnal Biologi Tropis vol.17 No.2 Desember 2017 Jurnal Biologi Tropis vol.17 No.1 Juni 2017 Jurnal Biologi Tropis. Vol.16 No.2 Desember 2016 Jurnal Biologi Tropis. Vol.16 No. 1 Juni 2016 Jurnal Biologi Tropis. Vol.15 no.2 Desember 2015 Jurnal Biologi Tropis. Vol.15 No. 1 Juni 2015 Jurnal Biologi Tropis. Vol.14 No. 2 Desember 2014 Jurnal Biologi Tropis. Vol.14 No. 1 Juni 2014 Jurnal Biologi Tropis. Vol.13 No. 2 Desember 2013 Jurnal Biologi Tropis. Vol.13 No.1 Juni 2013 More Issue