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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 2,562 Documents
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Water Content of Stingless Bee Honey Varies by Season Andi Gita Maulidyah Indraswari Suhri; Irnayanti Bahar
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4651

Abstract

The relative humidity of the air in the region where honey is produced has a significant influence on the moisture content of the honey. The production season, feed source, nectar type and concentration, colony strength, and physical environmental conditions are all factors that influence honey's moisture content. The goal of this study was to determine the moisture content of honey collected over the course of a year to learn more about the quality and safety of honey. One hundred fifty samples of honey gathered from Bone, Indonesia, during both the wet and dry seasons were analyzed to assess the percentage of moisture present in the honey. Honey's physical properties, microbiological value, sensory qualities, and economic worth are all affected by its moisture content. At a temperature of 25 degrees Celsius, an Abbetype standard model refractometer was used to measure the refractive index (RI) in accordance with the method recommended by the International Honey Commission. Comparing honeys produced during the wet season with those produced during the dry season revealed that there is a statistically significant variation in the quantity of moisture that is present (p = 0.0029). This demonstrated that the moisture content of honey during the dry season had a substantially different value compared to the wet season at the 0.01 level (p = 0.00024). Using the F test, it was determined that there was not a significant difference in the amount of moisture contained in specific varieties of honey that were produced during the wet seasons and those that were produced during the dry seasons.
Inventory of Bivalve in the Coastal Area of Desa Sungai Nibung West Kalimantan Ikha Safitri; Arie A. Kushadiwijayanto; Sy. Irwan Nurdiansyah; Mega Sari Juane Sofiana; Warsidah Warsidah
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4676

Abstract

Desa Sungai Nibung, Kubu Raya Regency, has been designated as one of the conservation areas in West Kalimantan. The coastal area of this village has potential of natural resources with a high level of diversity, including bivalves. Local community catch and sell bivalves for consumption. It is due to their high nutritional content, so that they are used by the local community as food and a source of protein. Inventory of biota is the first step to manage biological resources and support the management plan for a conservation area in this village. The study aimed to determine the diversity of bivalves in the coast of Desa Sungai Nibung, West Kalimantan. The research was conducted in December 2022. Sample collection was done using an exploratory method. Bivalves were taken, then stored in the cooling box for further identification. The result showed three bivalve species, such as Polymesoda erosa, Anadara granosa, and A. antiquata.
The Potency of Vitamin C in Tomato Plant for the Result of Genetically Modified Lanceolate Gene Through Agrobacterium Tumefaciens Using CRISPR-CAS 9 Vannesa El Shaday Ruth Advenita; Christeven Mevotema; Iren Asima Situmorang; Lusiana Haris; Wahyu Irawati
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4682

Abstract

Vitamin C is the important part in the formation of protein in the body, one of which is obtained from tomatoes (Solanum lycopersicum L.). Due to the needed of vitamin C, a way is needed to get vitamin C from tomatoes which are of higher value. Tomato genetically modified using the lanceolate gene through Agrobacterium tumefaciens using CRISPR-CAS9 is a promising solution for the food world. The literature study method is carried out by reviewing the theory and the results of previous research qualitatively. The results is that genetically engineered tomatoes have the advantage of high vitamin content by using plant improvement and modification. The bacterium Agrobacterium tumefaciens functions as a vector and insertion site for recombinant genes and CRISPR-CAS9 technology is used to modify the target genome because it has a CAS9 protein containing two homologous domains resulting in a new trait. Tomatoes with lanceolate leaves will have fruit with high vitamin content because the results of photosynthesis are focused on fruit development. Suggestions for conducting in-depth research to ensure safety in the food quality and health. The goals of the research were to 1) determine the potency of tomato rich in vitamin C using genetic engineering of Agrobacterium tumefaciens, 2) structure and function of the Lanceolate gene in plants, 3) application of CRISPR-CAS 9 in genetic engineering, and 4) advantages and disadvantages of genetically modified tomato. God gave humans the ability to manage His creation. So that humans can glorifying God through research.
Density of Meretrix meretrix Clamps Under Ecological Pressure on Different Substrate Texture at the Kambu River of Kendari Bay, Southeast Sulawesi Bahtiar; Muhammad Fajar Purnama
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4684

Abstract

White clams at the mouth of the Kambu River in Kendari Bay have a preference for different substrate textures and are under ecological pressure.  This study aims to determine the density of tofu shells at the mouth of the Kambu River, Kendari Bay, Southeast Sulawesi. This research was conducted at the estuary of the Wanggu River, Kendari Bay, Southeast Sulawesi from August 2021 to January 2022. White clams were taken manually using a 1x1 m squared transect. These shellfish samples were taken 6 times in repetition/station in each month of observation. Samples found in the field were counted. Taking the texture of the aquatic substrate together with the sampling of shellfish. The results showed that the maximum density of white clams at the mouth of the Kambu River, Kendari Bay, was 7.3 ind/m2. The highest density of white clams was found at stations I and II, while the lowest density was found at station III. The highest density of shellfish was found in the type of substrate which was dominated by the fine sand fraction, while the lowest density was found in the type of substrate which was dominated by the silt fraction.
Performance of Kampung Unggul Balitnak (KUB) Chickens with the Additions of Soya Flour in the Diet Susan Mokoolang; Agustriyanto Abudi; Ramlan Pomolango; Fahrullah Fahrullah
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4707

Abstract

Ayam Kampung Unggul Balitnak (KUB) is the result of selecting native Indonesian kampong chicken strains for six generations that have advantages in terms of maintenance due to the level of feed consumption that is less. The aim of this research was to the effect of soybean flour on the performances of Balitnak Superior Kampong Chicken (KUB). This study used a completely Randomised Design consisting of 5 treatments and 4 replicates. The treatments consisted of T1: basal + 0% soya flour; T2: basal + 2,5% soya flour; T3: basal + 5% soy flour; T4: basal + 7.5% soya flour and T5: basal + 10% soya flour. The results showed that the use of soya flour in the ration of KUB chickens gave an increase in ration consumption, weight gain and could increase the efficiency of ration use. The best concentration of soya flour in the KUB chicken ration was 10%.
The Effect Of Nano Technology Liquid Organic Fertilizer On The Growth Of Spinach (Amaranthus hybridus l.) Cultivated Hydroponically Yurico Utami; Resti Fevria; Vauzia Vauzia; Irma Leilani Eka Putri
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4718

Abstract

Hydroponic cultivation using a wick system is one of the techniques used to increase the production of spinach (Amaranthus hybridus L.). One of the disadvantages of hydroponics is the occurrence of nutrient deposition, to reduce nutrient deposition in the wick system is to apply nanotechnology to break down particles in the planting medium and nutrients used, that the particles become smaller and more easily absorbed by plants, and reduce precipitation in the wick system. This research was conducted using the RAL method (Completely Randomized Design) which consisted of 6 treatments and 4 replications and namely Control (Well water + AB Mix), P1 (Nano technology water + 100% AB Mix), P2 (nano technology water + 25% POC+75% AB Mix), P3 (nano technology water+50% POC+50% AB Mix), P4 (nano technology water+75% POC+25% AB Mix), P5 (nano technology water+100% POC). The data obtained were analyzed by means of variance (ANOVA) and followed by the DMRT test at 5% level. The results of this study are that there is an effect of the use of nano technology liquid organic fertilizer on the growth of spinach which can be seen in the highest plant at P2 with 29.975 cm, the highest number of leaves is at P2 with 34 leaves, the highest leaf area is in the control with 13,71 cm2, the wet weight the highest was on P1 with 17 gr, the highest dry weight was on P2 with 1.3 gr. The use of nano technology liquid organic fertilizer has an influence on the growth of green spinach which is cultivated hydroponically.
The Growth of the Red Lactus (Lactuca sativa L. var. Crispa) After Using Nano Technology Liquid Organic Fertilizer Hydroponically cultivated Nia Faradila; Resti Fevria; Vauzia Vauzia; Irma Leilani Eka Putri
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4719

Abstract

Hydroponics is a method of agriculture in which earth is not used. Among the plants amenable to hydroponic cultivation is red lettuce. One disadvantage of hydroponic cultivation is the occurrence of nutrient deposition, particularly in the wick system, where the nutrient water does not move. A technique that can lessen the amount of nutrient deposition that occurs in hydroponic systems is required in light of the aforementioned issues. Nanotechnology is one of the technologies developed. The five treatments and four replications in this study were P1 = AB Mix 100 percent, P2 = AB Mix 75 percent + POC Nano 25 percent, P3 = AB Mix 50 percent + POC Nano 50 percent, P4 = AB Mix 25 percent + POC Nano 75 percent, and P5 = POC Nano 100 percent. ANOVA (Analysis of Variance) was used to analyze the data, and the Duncan's New Multiple Range Test (DMRT) test at level 5 followed. The effects of nanotechnology-enhanced liquid organic fertilizer on red lettuce growth, including height, leaf area, number of leaves, fresh weight, and dry weight, were examined. The highest average plant is at P3 with a plant height of 36.42 cm, the highest average number of leaves is at P3 as many as 11.25 strands, the widest average leaf is at P4 with an area of ​​40.25 cm2, the average weight The highest wet weight was P4 with a weight of 17.01 g, and the highest average dry weight was P2 with a weight of 1.32 g.
Anti-Stapylococcus Epidermidis of Methanolic Extracts from Some East Lombok Medicinal Plants Dyke Gita Wirasisya; Amni Hamid; Muhamad Haikhal; Agriana Rosmalina Hidayati; Anggit Listyacahyani Sunarwidhi; Nisa Isneni Hanifa
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4732

Abstract

Wounds are structural and functional disruptions of the skin that occur as a result of an injury. Wound healing is a complex tissue repair or remodelling process in response to the injury. The most common factor that causes wounds not properly heal is infection. An infection develops when microorganisms enter the body, multiply, and trigger an immune reaction in the body. This study aims to determine the activity of Jatropha multifida L., Stachytarpheta jamaicensis (L.) Vahl, Centella asiatica (L.) Urb., Euphorbia pulcherrima Willd. ex Klotzsch, and Angelica keiskei (miq.) Koidz has long been used to treat and manage wounds in East Lombok. The plants were dried and macerated with methanol; excessed solvent was evaporated. Disc diffusions were used to determine the antibacterial activity of the plant extracts. All extracts were tested against Staphylococcus epidermidis, a common cause of wound infection. Statistically, the activity of Jatropha multifida (5;10 mg/mL), Stachytarpheta jamaicensis (10 mg/mL), Centella asiatica (10 mg/mL), Euphorbia pulcherrima (M) (5, 10 mg/mL), and Angelica keiskei (2,5; 5; 10 mg/mL) extracts were comparable with positive control. However, Angelica keiskei has a wider inhibition zone than other extracts. This discovery could be served as a basis for using plants to aid wound healing, especially to combat the interference bacteria. However, further research is needed to discover the active phytochemicals involved in the antibacterial and wound healing process.
Species diversity of herpetofauna in bat cave area, indarung village, lubuk kilangan district, padang city Reza Sapitri; Fitra Arya Dwi Nugraha; Abdul Razak; Yusni Atifah
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4733

Abstract

Bat Cave is a new tourist attraction located in Indarung Village, Lubuk Kilangan District, Padang City. Changes in habitat will affect the fauna in it, especially the herpetofauna, because herpetofauna is very sensitive to environmental changes. Herpetofauna research in this area has never been done. The research was conducted in December 2022, the observation method used was the transect method combined with the VES (Visual Encounter Survey). The purpose of this study was to determine the diversity of herpetofauna species in the Bat Cave area. Based on the research, nine types of herpetofauna were found, consisting of six types of amphibians and three types of reptiles. Total number of individuals obtained was 57 individuals. The most common type found was Limnonectes blythii, namely 23 individuals. In this study, one individual was found endemic to West Sumatra, namely Ichthyophis elongatus. Based on the research conducted, the diversity of herpetofauna species in the Bat Cave area is low.
Correlation Beetwen Body Weight with Scrotal Circumference, Testis Weight and Sperm Production of Boer Buck Intensively Rearing I Wayan Lanus Sumadiasa Wayan
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4743

Abstract

Body weight of one of the regulators that determine the scrotum circumference and weight (large) testicles. Next, the weight of the testes has a very close relationship with sperm production that will determine the reproductive ability of a male. The purpose of this study was to determine the relationship between body weight and scrotum circumference, testicular weight and boer goat sperm production that was maintained intensively. The study was conducted with a descriptive method with the material of 15 male goats owned by PT. Sadhana Arif Nusa. Data is processed by regression and correlation analysis using the SPSS program. The results showed that the body weight average was 52.58 ± 14.96 kg, correlated very significantly (p <0.01) with scrotum circumference (25.68 ± 1.96 cm) and testicular weight (0.46 ± 0, 10 kg) with a correlation coefficient of 0.67 and 0.91. Body weight not correlated (p> 0.05) with good sperm production volume (0.50 ± 0.19 ml), pH (6.43 ± 0.19), sperm consistency, progressive motility (73.33 ± 7, 24 %) and Spermatozoa concentration (2.18 ± 0.54 x 109/ml). The scrotum circumference is very significantly correlated (p <0.01) with a testicular weight and a real correlation (p <0.05) with sperm volume, motility and concentration of spermatozoa with a coefficient of 0.91 each; 0.58; 0.56 and 0.54. The testes weight is real correlating (p <0.05) with sperm volume, progressive motility and spermatozoa concentration with a coefficient of 0.53 each; 0.56 and 0.54. CONCLUSION, body weight correlates piosif with scrotum circumference, the weight of the quality of the testes and sperm production in boer goats.

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