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Kota mataram,
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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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An Examination of The Aflatoxin Concentration of Corn and How It Affects Laying Hen Performance on Farms in North Lombok Regency Maslami, Vebera; Noersidiq, Azhary; Fahrullah, Fahrullah; Dwi Kusuma Purnamasari; I.K.G. Wiryawan; Erwan, Erwan; Syamsuhaidi, Syamsuhaidi; Sumiati, Sumiati; Rohima, BQ. Nahya
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6855

Abstract

The mold Aspergillus flavus produces a metabolite molecule called aflatoxin. Aflatoxin chemicals can have harmful effects on both humans and livestock when they are present in feed ingredients. Aspergillus flavus frequently grows on corn, one of the feed ingredients. Examining the amount of aflatoxin contamination in corn in North Lombok Regency and how it affects laying hen performance was the goal of this study. Random sampling was done from each subdistrict, and descriptive analysis was done on the collected data. According to the study's findings, aflatoxin compounds, which have a range of 87.99–132.38, were found in 50% of corn. Aflatoxin concentration in feed surpasses the 60 ppm SNI guideline by 33.33%.  Performance is impacted by aflatoxin compounds in maize; specifically, 50% of feed intake, 50% of egg weight, and 100% of noncompliance with SNI and corporate criteria are not met. The results of this study suggest that aflatoxin levels in diet have an impact on laying hens' declining performance.
Population of Phosphate Solubilizing Bacteria in Maize Rhizosfer with Different Irrigation Volume and Organic Matter Shakila, Nur Asri; Susilowati, Lolita Endang; Dewi, Rika Andriati Sukma; Suriadi, Ahmad
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6858

Abstract

Phosphate solubilizing bacteria are soil bacteria which is vital to converting non-available phosphate into available phosphate. There has been a lot of studies to find out strategies or treatments that can increase PSB populations and activities, such as addition of organic materials or irrigation technique. This research aimed to test the effect of different irrigation volumes and types of organic material on phosphate solubilizing bacteria in maize rhizosphere. This research is a field experiment with a split plot design with two factors, irrigation volume (I1: 100% of plant needs, I2: 80% of plant needs, and I3: 60% of plant needs) as the main plot and type of organic material ( B0: without organic material, B1: manure; B2: rice husk biochar, and B3: vermicompost + biochar) as the sub plots. Soil and crop samples were taken at maximum vegetative phase (56 days after planting). The parameters tested and observed in this research were PSB population, soil pH, soil organic carbon, available P, phosphate uptake, and soil moisture. Based on the results of this research, it was obtained that the interaction between the irrigation volume of 100% of plants needs and the manure gave the highest PSB population about 1,23 x 106 cfu/gram. This population increase is in line with an increase in soil-available P and plant phosphate uptake.
Analysis of Officer Behavior in Achieving Minimum Service Standards for the Diabetes Mellitus Control Program at the Lombok Regional Health Center Sofianingrum, Arnita; Astriani, Iis; Andi, Muhammad Alwi; Doni, Lalu Putram
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6865

Abstract

Diabetes Mellitus (DM) is a disease in which blood sugar levels exceed the normal threshold. DM in Indonesia has increased by 10% from 15% to 25%, and 40-50% of people with heart disease are also diabetes mellitus sufferers. The aim of this research is to determine the description of the behavior of officers in achieving minimum service standards for the Diabetes Mellitus control program at the West Lombok Regional Health Center. The results of the research show that the achievement of Minimum Service Standards (SPM) in the DM program at the West Lombok Regional Health Center has not met the Government's target. Lack of achievement of SPM can cause an increase in the number of DM cases that are not recorded and affect the achievement of existing health targets at the district and national level.  
Identification of Compounds from Hexane Extract of Virginia Tobacco Bark in Lombok and Its Potential as Botanical Pesticides Sarjan, Muhammad; Supriadi, Supriadi; Rizaldi, Lalu Heri; Sarjan, Achmad Fajar Narotama
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6871

Abstract

This research aims to identify the class of terpenoid compounds contained in hexane extract of tobacco stems (Nicotiana tabacum). The extraction method uses hexane solvent to obtain terpenoid compounds contained in tobacco bark. Gas chromatography-mass (GC-MS) techniques were used to analyze and identify these compounds. The compound contained in the hexane extract of Virginia tobacco stem bark is only one terpenoid derivative, namely 4,8,13-Cyclotetradecatriene-1,3-diol. Analysis of the structure of this compound shows its potential as an antimicrobial and can be applied in the agricultural industry, namely as a botanical pesticide. Its unique chemical structure enables various mechanisms of action against microbes, which can be further explored for the development of agricultural applications. Further research is needed to fully understand the potential and mechanism of action of this compound in an antimicrobial context.
Monitoring Study of The Seagrass Ecosystem in Panrangluhu Beach Marine Water, Bulukumba, South Sulawesi Supardi, Wahyu; Pradana, Andi Rizki Adi
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6872

Abstract

The lamu meadow ecosystem is spread across Panrangluhu Beach, Bulukumba Regency. This research aims to identify seagrass types, density levels and seagrass cover in the Marine Waters of Panrangluhu Beach, Bulukumba Regency. The method used is a survey method by directly observing the condition of the seagrass ecosystem. Observations of seagrass beds used quadrant transects measuring 50 x 50 cm, along a 50 meter transect line with three transect lines. The research results obtained in the sea waters of Panrangluhu Beach were E. acroides at 81.75 stands/m2, T. hemprichii seagrass at 31.5 stands/m2, and S. isotifolium seagrass had a density value of 28.5 stands/m2. The seagrass density condition is classified as dense density, with dense seagrass cover conditions. The quality of the marine water environment at Panrangluhu Beach still supports seagrass life.
Etnoscience of Traditional Alcoholic Beverages (Moke Putih) of Ngada East Nusa Tenggara Limbu, Umbu Nataniel; Bao, Antonia Paulina; Lea, Victoria Coo; Bhae, Christianus Y. N.; Prihatin , Prihatin
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6874

Abstract

Ngada district has a traditional drink called moke putih. Moke putih is a traditional alcoholic beverage made from the Aren’s water (Arenga pinnata Merr.) that is found in Flores. For the people of Ngada, moke putih is a symbol of being kind and harmony, and the consumption of moke has become a lifestyle for most people in there. This drink has a lot of potential because it has strong historical elements and cultural values. The purpose of this research is to know the history, processing, and the connection between moke putih and the culture of Ngada. The research method is a qualitative approach to ethnoscience through purposive sampling techniques and snowball samplings from villages with 10 respondents and data collection through interviews, observations, and documentation. Moke Putih is a traditional drink that has been passed down from generation to generation and is closely related to the culture, customs, and characteristics of the Ngada people. White moke is made from slicing the fruit stalks of the sap tree, and this drink is used at every traditional event and in daily activities as a substitute for drinking water.
Method for Measuring Damage to Viability and Morphology of Spermatozoa in Experimental Animals After Exposure to Cigarette Smoke Muksin, Yufika Dewi; Mahrus, Mahrus; Bahri, Syamsul
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6876

Abstract

Smokers in Indonesia are ranked first in the world and the biggest cause of death. Free radicals contained in cigarette smoke cause condensation of the structure of the genetic material of sperm cells and lead to sperm cell death (apoptosis). The aim of the research was to determine the effect of cigarette exposure and its interactions on the quality of spermatozoa in experimental animals. This research is a laboratory experiment with a Completely Randomized Factorial Design. The samples in this study were 60 males of the Balb/C strain which were divided into 5 treatment groups. Each treatment group was given concentrations of red dragon fruit peel extract including 0%, vitamin C, 50 µg/mL, 500 µg/mL, and 5000 µg/mL and were exposed to cigarette smoke. Analysis of research results used the Two Way ANOVA test at a significance level of 0.05. The results of the study showed that there was an effect of exposure to cigarettes and administration of red dragon fruit peel extract on the sperm quality of mice. The highest exposure to cigarette smoke was given to red dragon fruit peel extract in terms of viability of 89% and morphology of 93.33%. Administration of red dragon fruit peel extract reduced the effect of exposure to cigarette smoke on the viability and morphology of mice.
Identification of Coral Bleaching Attack Level using Coral Health Chart Method in Menjangan Kecil, Karimunjawa Hanafi, Hanafi; Fitriani, Nabila Ayu; Athar, Muhammad Raihan; Hindami, Rio; Aulia, Indira Hauriina; Rachmawati, Siti Fitria; Irreniza, Kayla Yasmin; Anggiaputra, Nathanael Steffano Budi; Syahrodji, Putri Saqina Emilia; Fadlan, Azhardhya Norr Muhammad; Jeriansyah, Jejen; Riyanti, Riyanti; Arbanto, Bonifasius
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6877

Abstract

The increasing anthropogenic activities in Menjangan Kecil Waters can reduce the health condition of coral reefs in these waters. Therefore, it is necessary to investigate the level of bleaching attack that occurs in these waters. The purpose of this study was to determine the health condition of coral reefs in Menjangan Kecil Waters by observing the level of bleaching attack based on coral colour which is related to the density of zooxanthellae in coral living tissue. The CoralWatch method was applied to estimate the level of bleaching attack based on the level of coral colour in the coral health chart table. The results of this study revealed that the condition of coral reefs at 4 stations was dominated by colour levels 3-4, meaning that the condition of coral reefs began to bleach. The increasing of anthropogenic activities causes excessive interaction with coral reefs and human, thus accelerating the potential for bleaching. Optimization of ecotourism in Menjangan Kecil Waters, Karimunjawa needs to be done by conducting further studies on coral reef health.
Response of Shoot Growth of Pterocarpus indicus willd. to The Addition of BAP and TDZ In Vitro Nofitria, Atika Sari; Violita, Violita; Novita, Linda; Hindaningrum, Irni Furnawanthi; Elya, Mardoni; Kartiman, Roni
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6885

Abstract

Pterocarpus indicus Willd. also known as redwood is a native Philippine species belonging to the Fabaceae family that has many uses and high economic value and highly exploited. However, it is not accompanied by good regeneration which causes this species to be categorized as endangered (IUCN v. 2021-1). The in vitro technique is an alternative to overcome this problem. This study aims to determine the response of P. indicus Willd. shoot growth to the addition of BAP and TDZ in vitro. The research was conducted from August to December 2023, at the Biotechnology Laboratory, KST BJ. Habibie Puspiptek Serpong, South Tangerang, Banten. This study used a completely randomized design (CRD) consisting of 9 treatments and 14 replications. The treatments consisted of: R0 = Control, R1 = BAP 0,25 ppm, R2 = BAP 0,5 ppm, R3 = BAP 0,75 ppm, R4 = BAP 1 ppm, R5 = TDZ 0,25 ppm, R6 = TDZ 0,5 ppm, R7 = TDZ 0,75 ppm, R8 = TDZ 1 ppm. The results showed that the concentration of BAP 0,5 ppm gave the best results in height of shoot and TDZ 0,25 ppm gave optimum results in the number of shoots compared to the control and other treatment concentrations.
Effectiveness of Use of UV Lamp in Disinfection of Additioned Vaname Shrimp (Litopenaeus vannamei) Cultivation Media Bacteria Vibrio Harveyi Hapizah, Imro'atul; Junaidi, Muhammad; Azhar, Fariq
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6889

Abstract

One of the most promising fisheries products in Indonesia is vaname shrimp (Litopenaeus vannamei), which is also a top export comodity. From year to year the value of shrimp exports and production continues to increase. However, vaname shrimp are susceptible to bacterial and viral attacks, so countermeasures are needed, one of which is by disinfecting the cultivation media using a UV lamp. The aims of this research is to determine the level of effectiveness of UV lamps in disinfection of cultivation media. Experimental methodology with a completely randomized plan (RAL) is the method used in this research, with 4 trials and 3 replications. The results of the research conducted showed that UV lamps were able to reduce the total bacterial count to 4.69 x 108 CFU/mL at UV lamp 41 watt, reduce the total Vibrio bacteria to 30.33 x 106 CFU/mL at UV lamp 41 watt, increase the THC value to 8.83 x 106 CFU/mL cells/ml at P4, hyaline cells range from 31% – 54.67%, granulocyte cell values ​​range from 29.33% – 42%, semigranulocyte cells range from 16% – 27%, the highest AF value at P4 is 32.19%, and the lowest in P1 was 79.69%. Based on the findings, it is possible to conclude that UV lights can be used as a disinfectant of cultivation media, but the right dose or light power is needed to get maximum results.

Page 113 of 252 | Total Record : 2520

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