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
 189   190   191   192   193 
The Effect of Depth on Carrageenan Content in Kappaphycus alvarezii Culture in the Waters of Teluk Gerupuk Aini, Kuratul; Cokrowati, Nunik; Affandi, Rangga Idris
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.v25i2.9090

Abstract

Kappaphycus alvarezii is a red seaweed commonly found in the Indo-Pacific region. Seaweed plays an important role in daily life due to its high nutritional value and its content of hydrocolloid compounds such as carrageenan, agar, and alginate. Carrageenan is categorized into three types: iota, kappa, and lambda. It is widely applied in various sectors including food, pharmaceuticals, and cosmetics. This study aimed to identify the optimal cultivation depth to maximize the carrageenan content in Kappaphycus alvarezii. The research employed an experimental method using different depth treatments over a cultivation period of 45 days. A completely randomized design (CRD) was applied, consisting of four treatments with three replications, resulting in a total of 12 experimental units. The treatments were as follows: P1 (0 cm depth), P2 (25 cm), P3 (50 cm), and P4 (75 cm). The research procedure included the construction of floating rafts, seedling preparation, tying of seedlings, planting, sampling, and harvesting. The best results were observed in treatment P1 (0 cm depth), which yielded the highest carrageenan content at 40%, the greatest absolute weight at 350 grams, and the highest specific growth rate at 5.90% per day.
Production Performance of Joper Chickens Fed with BSF (Black Soldier Fly) Maggots Cultivated in Different Media Aprisansoni, Amar; Wiryawan, I Ketut Gede; Maslami, Vebera; Erwan, Erwan; Indarsih, Budi
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.v25i2.9102

Abstract

The unstable price of animal feed is then carried out to find alternative feed. The purpose of this study was to evaluate the effect of giving maggots raised in different media on the production performance of Joper chickens. Maggots were raised with three different feed media. P1 25% blood, 50% bran, 25% market waste; P2 is the same as P1 24% market waste and 1% rice bran fried foods, and P3 is the same as P1 23% market waste and 2% fried food waste. Experiment Feeding 200 two week-old Joper chickens was done randomly in four treatments. P0 was given self-mixing feed, while P1, P2, and P3 were given additional feed 20% maggot flour in self-mixing feed maggot research results First. The results of the maggot research show that the best media for treatment P2 was BK 95.18%, ash 10.69%, KA 5.1%, LK 17.54%, SK 16.32% and PK 54.35%. The use of 20% maggots in Joper chicken feed has no significant effect on the production performance and percentage of Joper chicken carcasses, but there are tendency on the weight of P2 chicken carcass containing 1% fried waste. It is recommended to use 20% in the second research ration.
Diversity of Fiddler Crab (Uca spp.) in The Mangrove Area of Gerupuk Beach Central Lombok Susanti, Yeni; Jufri, Abdul Wahab; Syukur, Abdul
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.v25i2.9107

Abstract

The great influence that ball crabs have on changes in the physical and biochemical aspects of the environment so that they become biota that inhabit microhabitats. Mangrove ecosystem, this can have an impact on the quantity and diversity of fiddler crab species (Uca spp.). One of the coastal locations of Central Lombok is quite large, namely Gerupuk Beach. The purpose of this study was to diversity of fiddler crabs and distribution pattern in the mangrove area of Gerupuk Beach, Central Lombok and to see the validity of the learning videos in this study. The quadratic transect approach was used to conduct the field study from December 2024 to February 2025. Convenience was used to decide the research stations. There were 247 fiddler crabs (Uca spp.) in all stations, according to the results. These individuals were divided into four subgenus and included seven different species: Uca perplexa, Uca triangularis, Uca tetragonon, Uca crassipes, Uca bellator, Uca dussumeiri, and Uca forcipata. The three stations' diversity (H'), which was classified as medium level, ranged from 1.318 to 1.897. The evenness index (E) ranged from 0.677 to 0.975, falling within the relatively even range. Additionally, fiddler crabs' dominance index (C) falls between 0.156-0.310 for the low dominance category.
Accumulation of Heavy Metal Cd and Fe in Rhizophora apiculata Stand Around Lembar Port West Lombok Regency Valentino, Niechi; Ridzky Prasetyo, Andrie; Anwar Hadi, Muhammad
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.v25i1.9118

Abstract

The mangrove ecosystem in the Labuan Tereng area needs to be protected and preserved. Mangrove ecosystems have an important role as carbon absorbers and play a role in environmental detoxification through their ability to absorb heavy metals in their surroundings. This study seeks to analyze the ability of Rhizophora apiculata to absorb and retain cadmium (Cd) and iron (Fe) concentrations in the Labuan Tereng mangrove habitat. A systematic sampling approach with a random start was applied, involving 24 plots distributed over three designated stations. Roots and leaves were sampled at each station. Heavy metal concentration analysis for Cd and Fe was conducted at the BSIP Laboratory for Agricultural Instrument Standardization. The study results reveal that root tissues contained the highest concentration levels, namely 615,23 ppm (Fe) and 0,98 ppm (Cd). Therefore, in leaf organs as large as 35,85 ppm (Fe) and 1,09 ppm (Cd). The concentration of heavy metals in R. apiculata has surpassed the permissible limits set by environmental quality standards. Result T-test shows that no significance between Fe and Cd metal in a distance of 0-100 and 100-200 m from the coastline. The translocation factor value of Rhizophora apiculata has phytoextraction properties with a TF value>2 for Cd metal, while for Fe metal, it has phytostabilization properties with a TF value<1. The influence of density on the level of trees and saplings does not have a significant relationship with Cd and Fe metals, where the t-count is > 0.05 and the effect is very weak on Cd and Fe metals.
Potential of Bioactive Compounds of Allium sativum L. var. solo garlic Extract in Inhibiting InhA Protein in Mycobacterium tuberculosis Rohmawati, Uun; Amalia, Atikah
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.v25i2.9119

Abstract

Tuberculosis (TB) is caused by the bacteria Mycobacterium tuberculosis. In general, TB is treated with compounds that inhibit the work of one of the enzymes in the bacteria Mycobacterium tuberculosis, namely the InhA enzyme. One of the herbal plants that has the potential to inhibit the InhA protein in the bacteria Mycobacterium tuberculosis is. Allium sativum L. var. solo garlic. This research aims to determine the bioactive compounds in Allium sativum L. var. solo garlic in inhibiting the InhA protein in Mycobacterium tuberculosis which can be used as an alternative drug in the treatment of TB through an in silico approach. The method used in this study was qualitative phytochemical screening and GCMS test on Allium sativum L. var. solo garlic extract, the bioactive compounds found were tested in silico through a molecular docking approach. The research results obtained that Allium sativum L. var. solo garlic contains alkaloids, flavonoids, tannins and steroids. Based on the results of the GCMS test, the bioactive compounds that have an area of ​​more than 5% are Heptadecene-(8)-Carbonic Acid-(1), 3-Deoxy-D-Mannonic Acid, 5-Hydroxymethylfurfural, Melezitose and Oleic acid. The results of molecular docking showed that the compound 3-Deoxy-D-mannonic acid had a binding affinity of -4.9, 5-Hydroxymethylfurfural -4.8, Oleic Acid -6.4, Nicotinamide-Adenine-Dinucleotide (Control) had a binding affinity of -11.4. Low binding affinity indicates that the compound can bind to the protein with little energy. The Gyps energy theory states that the smaller the energy produced from a bond between the ligand and its receptor, the more stable the bond is. The lowest binding energy to the InhA protein is in the control compound Nicotinamide-Adenine-Dinucleotide, Oleic Acid, 3-Deoxy-D-mannonic acid, 5-Hydroxymethylfurfural.
Identification of Nuisance Animals in Edible Bird's Nest Farming in Tanjung, North Lombok Regency Septian, I Gede Nano; Aminurrahman, Aminurrahman; Karni, Ine; Amalyadi, Rezki; Gifari, Zaid Al
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.v25i2.9120

Abstract

The cultivation of edible bird's nest in North Lombok Regency is experiencing rapid growth. This can be attributed to the rising demand for edible bird's nest products. Nevertheless, the primary challenge to its advancement is the presence of nuisance animals. The objective of this study was to identify and categorise nuisance animals present in edible bird's nest cultivation sites within the boundaries of the Tanjung sub-district. The present study employed a descriptive qualitative approach, with data collection undertaken via purposive sampling. The findings of this study identified seven species of nuisance animals in edible bird’s nest cultivation in the area of Tanjung Subdistrict. The following animals are included in this category: snakes, rats, geckos, owls, bats, cockroaches, and ants. These animals have the capacity to exert a direct influence on the swiftlet population, thereby diminishing edible bird’s nest production, particularly within the confines of the Tanjung Subdistrict.
Semi-Natural Breeding of Philemon buceroides as a Conservation Solution Yamin, M.; Khairuddin, Khairuddin; Artayasa, I Putu
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.v25i2.9122

Abstract

The Philemon buceroides is a bird with a limited distribution in the Wallacea region that is difficult to breed in captivity. Its population has drastically declined due to habitat degradation and hunting. This study aims to find its breeding strategies to support its survival. The research was conducted in a breeding cage measuring 4m x 16m x 4.5m, resembling natural habitat conditions. Observed parameters included reproductive success, chick survival rates, and behavioral adaptation of the birds to a semi-natural environment. Results showed that out of four female parents, two succeeded in laying two eggs each; however, the eggs did not contain zygotes. These findings indicate that semi-natural breeding needs to be developed as an effective conservation strategy for P. buceroides, while also providing a scientific basis for the development of long-term release programs.
Halophilic Bacteria as Promising Biocatalyst Producers: A Review on Enzyme Production Aini, Diah Miftahul; Balqis, Solina
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.v25i2.9125

Abstract

Halophilic bacteria, a group of extremophiles adapted to high-salinity environments, have emerged as valuable sources of relevant biocatalysts. This review aims to compile and analyse current knowledge on the enzymatic potential of halophilic bacteria. Using a systematic literature review as its primary methodology to collect, examine, and integrate academic findings on halophilic bacteria as promising sources of biocatalysts. This review highlights that halophilic bacteria possess remarkable physiological and biochemical adaptations that enable them to survive osmotic stress, with recent advances in genetic engineering and synthetic biology enhancing their enzyme production and functional efficiency. These findings underscore their potential as robust and efficient biocatalysts for sustainable industrial applications. In conclusion, halophilic bacteria represent valuable resources for biotechnology, particularly in extreme conditions where conventional enzymes fail. Future research should focus on in-depth genomic and proteomic analyses, metabolic engineering for optimized enzyme yields, industrial-scale feasibility studies, environmental impact assessments, and cross-disciplinary collaborations to fully harness their capabilities in real-world applications.
Diversity of Herbs and Lianas in The Suranadi Tourism Park Area, West Lombok Regency in 2024 Majdi, Mohammad Zainul; Raksun, Ahmad; Mertha, I Gde; Sukarso, A. A.
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.v25i2.9132

Abstract

One of the conservation forests with diverse types of flora and tropical forests that are evenly distributed is Suranadi Nature Tourism Park. The types of herbs and lianas are rare plants that are rarely studied in the Suranadi Nature Tourism Park Area. This study aims to describe the species of Herba and Liana plants in the Suranadi Nature Tourism Park area of West Lombok Regency. The type of research used is quantitative research that is descriptive explorative with exploration or survey methods. The research data were analyzed quantitatively which would then be described and calculated using the Shannon-Wieener index to measure species diversity. The results of the study at the location were: there were 13 species from 11 families found in Herba plants and there were 9 species from 7 families found in Liana plants. The results of this study obtained a richness index of 2.49 for 13 types of herbs and -58.13 for 9 types of lianas found and entered the medium-low richness category. This study proves that the fewer types of plants found in an area, the lower the richness index value.
Computational Toxicology: Endocrine Disrupting Effects of Lavender and Tea Tree Metabolites Selvira Anandia Intan Maulidya; Baiq Risky Wahyu Lisnasari; Indra Purnomo; Tuhfatul Ulya; Wayan Cintya Ganes Budastra
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.v25i2.9143

Abstract

While Lavandula angustifolia (lavender) and Melaleuca alternifolia (tea tree) are widely utilized in diverse products for their rich bioactive secondary metabolites, emerging evidence now fules concerns about their potential endocrine-disrupting activities. This study aimed to investigate the endocrine-disrupting potential of selected secondary metabolites from lavender and tea tree via an in silico molecular docking approach. Molecular interactions were evaluated against 18 human endrocine receptors using Endocrine Disruptome in silico tools and binding affinities were analyzed to assess potential toxicity. Docking analysis revealed that all lavender anda tea tree secondary metabolites have the potential to interact as androgen receptor antagonists, exhibiting minor, medium, and high probabilities of such activity. Additionally, more than 20% of lavender secondary metabolites and 10% of tea tree secondary metabolites are predicted to be capable of binding to the mineralocorticoid receptor, as well as thyroid receptors alpha and beta. These findings suggest a plausible mechanism by which these phytochemicals could exert endocrine-disruptor effects. In conclusion, the study provides preliminary computational evidence supporting the hypothesis that certain lavender and tea tree sceondary metabolites may act as endocrine-disrupting agents. Further in vitro and in vivo studies are warranted to assess their toxicological implications for long-term human exposure.

Page 191 of 252 | Total Record : 2520

 189   190   191   192   193 

Filter by Year

2013 2026


Reset
Filter By Issues
All Issue Vol. 26 No. 1 (2026): Januari-Maret Vol. 25 No. 4a (2025): Special Issue Vol. 25 No. 4 (2025): Oktober-Desember Vol. 25 No. 4b (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. 1b (2024): Special Issue Vol. 24 No. 1 (2024): Januari - Maret Vol. 23 No. 4 (2023): October - December Vol. 23 No. 3 (2023): July - September Vol. 23 No. 2 (2023): Special Issue Vol. 23 No. 2 (2023): April-June 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