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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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The Effectiveness of Vermicompost and NPK Fertilizer Treatment on Cucumis melo L. Vegetative Growth Raksun, Ahmad; Ilhamdi, Moh. Liwa; Merta, I Wayan; Mertha, I Gde
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): 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.v24i1.5399

Abstract

Melon is an annual plant, growing creeping with a stem length of about 3 meters. The vegetative and generative growth of melons is influenced by genetic and environmental factors. Environmental factors that affect the growth of melons include the abundance of nutrients in the growing media. Research has been carried out on the effectiveness of vermicompost and NPK fertilizer treatment on melon vegetative growth, with the aim of analyzing the effectiveness of vermicompost in increasing stem length, number, length and width of leaves and stem diameter of melons. effectiveness of NPK fertilizer in increasing stem length, number, length and width of leaves and stem diameter of melons. Effectiveness of the interaction of vermicompost and NPK fertilizer in stimulating melon growth. Growth parameters were measured when the melon was 28, 29 and 30 days after planting, the data obtained was analyzed using Anova. The results showed that vermicomposti is effective in increasing stem length, total and leaf length, but is not effective in increasing leaf width and stem diameter of melons. Application of NPK fertilizer is effective in increasing stem length, total leaves, leaf length, leaf width and stem diameter of melon. The interaction between vermicompost and NPK fertilizer was not effective in stimulating melon growth.
Production of Radish Plants (Raphanus sativus) Due to Giving Bokashi and SP-36 Uly J. Riwu Kaho; Joritha Naisanu
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i4.5408

Abstract

Radish plants as a food ingredient, almost all parts of the plant can be eaten raw as fresh vegetables or cooked as vegetables. The community's need for radish continues to increase as indicated by an increase in the amount of production. In 2018 radish production was recorded at 32,381 tons, in 2019 production decreased to 27,279 tons, while in 2020 production increased again to 39,048 tons. The solution in increasing radish production is by fertilizing using organic and inorganic fertilizers. The aim is to determine the interaction between SP-36 and bokasih on radish crop yields. The plan utilized was a randomized block plan (RBD) in a factorial example with two variables. The outcomes acquired: The treatment of bokashi and SP36 composts meaningfully affected plant level, number of leaves, tuber length, tuber distance across and tuber weight of radish plants. The connection between the utilization of Bokashi and SP36 composts gave the best outcomes on the normal plant level, number of leaves, tuber measurement and tuber weight of radish plants.
The Effect of Artificial Feeding Treatments on Predatory and Pollinating Ants in Cayenne Pepper Plants Tamrin Abdullah; Melina Melina; Prihatin Prihatin; Nurul Wiridannisaa; A. Dian Ridha Maghfirah
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i4.5413

Abstract

Pests have the potential to reduce the quality and quantity of cayenne pepper production. Pest control is done by utilizing natural enemies, such as ants by being stimulated with artificial food. This study aims to observe the population of dominant species and the effect of various artificial feeding treatments on ants that act as predators or pollinators in chili plants. The study was arranged in a Randomized Group Design (RGD) with 5 treatments, namely P0: Control (no pellet or sugar solution treatment); P1: 10 g artificial feed pellets; P2: 10% sugar solution; P3: 10% sugar solution and 10 g artificial feed pellets; and P4: 10 g artificial feed pellets (put into artificial nest) which was repeated 4 times.  Observations were made five times at three-day intervals. Data were analyzed by calculating the species diversity index (H'), species dominance index (C), and ant population. Based on the results, the ant diversity index in this experiment was classified as moderate at 1.17 (H' 1.0-3.0) and the ant dominance index was 0.35 (low: C<0.5). Ant identification revealed four species from three sub-families: Myrmicinae, Dolichodorinae, and Formicinae, namely Pheidole sp., Monomorium sp., Tapinoma sp., and Paratrechina sp. While species that have the potential as predators or pollinators on chili plants are Tapinoma sp.. Artificial feeding with treatment P3 (10 g artificial feed and 10% sugar solution) can have an effect and increase the population of Tapinoma sp. ants with an average of 81.95 heads on chili plants.
Analysis of Weed Vegetation in Robusta Coffee (Coffea robusta L.) Traditional Farm at Pesawaran, Lampung Nindy Permatasari; Made Same; Resti Puspa Kartika Sari; Lu'lu' Kholidah Fauziah
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i4.5422

Abstract

Weeds are highly undesirable plants in plantation areas, including robusta coffee plants. This is as a result of the presence of weeds that might minimise the productivity of robusta coffee plants. Currently, various types of weeds found in robusta coffee plants are known. This study aimed to enumerate the types of weeds found in robusta coffee plants. The research was conducted in June 2023 in robusta coffee plantations in Wiyono Village, Gedong Tataan, Pesawaran, Lampung Province. The research was conducted by purposive sampling with the plot method. The analysis showed that the composition of weeds in coffee plants consisted of 9 families and 14 species. Ageratum conyzoides appeared to dominate the coffee plants with the highest Summed Dominance Ratio (SDR) value (46.08%).  The weeds diversity index (H') in coffee plants was 0.823 and the dominance index was 0.636576.
The Relationship between Transpiration Speed and The Number of Stomata of Adam Hawa Plants (Rhoeo discolor) at The Veteran Bangun Nusantara University Campus Nur Rokhimah Hanik; Dewi Syafitri; Rahma Kusuma Ningati; Luthfiyah Zulfaa Astari; Asma Asy Syifaiyah; Suci Nurhayati
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i4.5427

Abstract

The physiological and anatomical adaptation of the Rhoeo discolor plant to water conditions in the environment can be used as a learning resource/study material for plant physiology courses. One example of physiological and anatomical adaptation is the relationship between transpiration rate and number of stomata. Therefore, it is necessary to conduct research on the relationship between transpiration rate and number of stomata in Rhoeo discolor plants at the University of Veteran Bangun Nusantara campus. Measurement of the rate of transpiration used Clobat Clorite paper and counted the number of stomata by making an incision in the lower epidermis of the leaf. Data analysis on the relationship between transpiration rate and number of stomata used prodact moment and qualitative descriptive to determine differences in transpiration rate and number of stomata in Rhoeo discolor leaves. From the research results it can be concluded; There is a relationship between the speed of transpiration and the number of stomata of the Adam Hawa plant (Rhoeo discolor) on the campus of the University of Veterans Bangun Nusantara, but the relationship is very small (r = 0.298). Discolor rhoeo plants that are in dry, dry shaded, and humid environments have different transpiration rates and number of stomata. Anatomically and physiologically the Rhoeo discolor plant can be used as a source of learning and an ornamental plant so that this plant needs to be cultivated and planted in more locations within the Veteran Bangun Nusantara University campus.
The Difference in Malondialdehyde (MDA) Levels among Normoweight, Overweight, and Obesity in Student of Medicine Program Faculty of Medicine, Mataram University Ni Putu Visty Widhiani; Ida Ayu Eka Widiastuti; Fitriannisa Faradina Zubaidi
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - 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.v23i3.5429

Abstract

Obesity has emerged as a global issue, including in Indonesia. Previous research has shown that obesity causes oxidative stress, which contributes to degenerative diseases such as type II diabetes mellitus, premature aging, cardiovascular disease, tumors and cancer. Malondialdehyde (MDA) is one of the biomarkers used to assess oxidative stress. The aim of this study was to determine differences in MDA levels in medical students at the University of Mataram based on weight criteria: normal, overweight, and obese. The study included 41 students from the 2021 class of the Medical Education program at the University of Mataram who were divided into two groups based on their body mass index (BMI). BMI was determined by isolating body weight (kg) by the square of level (m2), and serum MDA levels were resolved utilizing the ELISA technique. The information were investigated utilizing the Mann-Whitney relative test. The results showed that the MDA level in group 2 (obese and overweight) was 1715.27 ng/ml, higher than group 1 (normoweight) with levels of 902.67 ng/ml. However, this difference was not statistically significant, because the p-value was 0.093 (p > 0.05).
The acdS Gene Expression of Rhizobacteria Isolated from Rhizospheric Soil of Pineapple under Stressful Condition Dori Kusuma Jaya; Sri Ismiani; Zaitun Ritaqwin
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - 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.v23i3.5432

Abstract

The unfavorable rhizosphere environment for the growth of rhizobacteria and plants such as flooding and herbicide is relatively common for these rhizobacteria to express the acdS gene which encodes ACC deaminase. This study aims to observe the expression of the acdS gene in the rhizobacterial isolates from pineapple plants affected by the environmental stressors. The expression of the acdS gene was observed by growing the bacterial isolate on a Dworkin-Foster medium containing 3 mM.L-1 ACC and observing the RNA abundance of the isolate based on the Cq value in the RT-qPCR reaction. The selected bacterial isolates were then identified molecularly using the 16S rDNA gene. This study showed that 2 out of 7 bacterial isolates growing on a DF+ACC medium were selected for the RT-qPCR process. The two isolates came from flooding and herbicide stressors with Cq values ​​of 17.86 and 20.87, respectively. The two isolates were 1F and 2H which were identified molecularly as Burkholderia sp. and Pseudomonas psychotolerans in which both genera of bacteria commonly have the acdS gene. The two isolates can be used as inoculant candidates in the production of biological organic fertilizers as well as in their empowerment through land use management practices to help plants tolerate environmental stressors and promote plant growth.
Macrofauna Diversity of Molluscs (Gastropoda and Polecypoda) Associated with Mangrove in the Coastal Area of South Cemara Sheet Beach, West Lombok Karima Paspania; Abdul Syukur; Didik Santoso
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i4.5436

Abstract

Cedar Beach is a tourist attraction with a unique mangrove forest, opened in 2015 by the Maritime Affairs and Fisheries Service together with the South Sheet Village. Macro fauna is a group of large animals that live in the soil or water and have an important role in improving the physical, chemical and biological properties of the surrounding environment. Research on the diversity of molluscs (Gastropoda and Polecypoda) was conducted to determine the type, diversity, and relationship between Molluscs (Gastropoda and Polecypoda) and Mangrove. The number of individual Gastropods and Polecypods found in the mangrove area of the Cypress Beach is 9 species of Gastropods and 4 species of Polecypods. Diversity of Gastropods found in the mangrove area of Pantai Cemara was 1,009 in the moderate category, 0,405 in the diversity of Polecypoda was found in the low category, and mangrove diversity was categorized as moderate. The correlation between the diversity of Gastropods, Polecypoda and mangrove diversity is not significant because the environmental parameter value is salinity at the study site above 35 ppm which has a negative impact on mangroves due to negative osmotic pressure.  
Flying Activity of Apis cerana Honey Bee at Surouding Hive Area in Central Sulawesi I Made Budiarsa; Masrianih; Fatmah Dhafir; Manap Trianto
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i4.5440

Abstract

Information on foraging activity is important for efforts to increase the productivity of Apis cerana honeybees. Honey bees flying activities are carried out in the context of nest guarding activities from enemy attacks, removing feces from the nest, and foraging which takes place during the day to collect pollen and nectar from plants. This study aims to analyze the daily activity patterns of bees A. cerana which is influenced by environmental factors. This study used two colonies of A. cerana, namely colony one and colony two with the same colony size. The observed behaviors were bees leaving the nest, entering with pollen, and entering without pollen. The number of A. cerana colony one flying for pollen was high in the morning and low in the afternoon due to the very high light intensity during the day. Unlike colony one, A. cerana colony two did not actively perform flight activities and showed a different activity of flying in front of the nest forming a crowd in the afternoon. An inflorescence calendar needs to be developed to determine the flowering period of plants around the hive so that bee forage is continuously available to avoid absconding. absconding. Identification of plant pollen as a source of bee food needs to be done to determine the types of plants utilized by bees.
Diagnosis and Management of Fetal Growth Restriction Theophany Margareta Kurniawan; Pratiwi Anggraini; Meilisva Audila Anggraini
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i4.5447

Abstract

Fetal Growth Restriction (FGR) or Intrauterine Growth Restriction (IUGR) is one of the complications in pregnancy that is quite common, especially in developing countries, which is one of the contributors to neonatal mortality and morbidity rates. This literature review aims to provide related information, so that proper diagnosis and management can be carried out to reduce fetal morbidity and mortality rates. We searched from online databases and used review articles, research, guidelines from professional organizations, such as POGI from Indonesia, ACOG from the USA, and RCOG from the UK. Risk factor assessment and examination of fundal height can be the first steps in diagnosing IUGR. If suspicion is found, ultrasound (USG) and Doppler velocimetry can be performed. IUGR management mostly works in influencing the vasodilation of the placenta as the most common cause of IUGR events. Fetal Growth Restriction can be diagnosed immediately by screening for risk factors in pregnant women.

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