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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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Content of Dry Matter, Organic Matter, and Ash Wheat forage (Triticum Spp.) Fodder of Hydroponic at age different Defoliation Times Putra, Arya Eka; Sukaryani, Sri
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.v25i3.9512

Abstract

The increasing need for green fodder as animal feed continues to increase, especially in the face of limited land and weather changes, this encourages farmers to continue to innovate in an effort to meet the need for green fodder for livestock. Wheat (Triticum spp.) is a potential plant for green fodder because it grows quickly and has high nutritional content. The hydroponic fodder system is one method of plant cultivation that uses water rich in nutrients as a substitute for soil. The purpose of this study was to determine the effect of different defoliation ages on hydroponic wheat fodder green fodder production and nutrient content (dry matter, organic matter, and ash). The design used in the study was a Completely Randomized Design with 3 treatments, each treatment repeated 4 times. The treatments were P1: defoliation at 6 days; P2: defoliation at 8 days and P3: defoliation at 10 days. The variables observed included fresh weight, dry matter content, organic matter, and ash content of hydroponic wheat fodder green fodder. The results of the study showed that the highest fresh weight was achieved in P3 (118.75 ± 3.8 grams), then P2 (104.50 ± 6.1 grams) and P1 (77.50 ± 5 grams). The highest dry matter content was achieved in treatment P1 (33.84 ± 4.99 grams), followed by P2 (27.16 ± 2.9 grams) and the lowest in treatment P3 (23.33 ± 0.7 grams). The lowest ash content was in P1 (1.76 ± 0.39 grams) while the highest organic matter content was in treatment P1 (98.24 ± 0.39 grams). This research can be concluded that the difference in defoliation age between 6 - 10 days has a significant effect on the production and content of dry matter, organic matter and ash of hydroponic fodder.
Mangrove Diversity in Pare Mas Jerowaru, East Lombok Herlita, Mesi; Idrus, Agil Al; Syukur, Abdul
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.v25i3.9520

Abstract

The purpose of study is to determine the diversity of mangrove species in Pare Mas Jerowaru East Lombok. Data collection in this study was carried out using the drone check method and a combination of line and square transect methods measuring 2 x 2 m (seedling category), 5 x 5 m (pile category), 10 m x 10 (pole category), and 20 m x 20 m (tree category). Data analysis was carried out by calculating frequency, density, closure area, important value index, Shanon-Wiener diversity index (H'), uniformity index and dominance index. Mangrove species found in the mangrove area in Pare Mas are 233 individuals, consisting of 3 species belonging to 3 families. The value of  mangrove species diversity index in mangrove area in Pare Mas, Jerowaru, East Lombok is 0.743, uniformity index value is 0.676, dominance index value is 0.507, of 3 research transects of Rhizophora Apiculata and Sonneratia Alba species have highest frequency value of 0.8 ind/m². The highest density is owned by seedling category of 1,708 ind/m2, followed by sapling category of 1,187 ind/m2. Conclusion that the value of the mangrove species diversity index in Pare Mas Village is in the low category of 0.743. The highest species diversity index was found in transect 2 with a diversity index value of 0.797 and lowest in transect 3, which was with a value of 0.642.
Neurorestoration After Traumatic Brain Injury: Innovative Therapies for Restoring Function and Quality of Life Susilawati, Ni Nyoman Ayu; Putri, Siti Noururrifqiyati Juna; Prayitno, Oktavianus; Panjaitan, Melisa Parida Djayanty
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.v25i3.9531

Abstract

Traumatic brain injury (TBI) is a major cause of death and disability globally, with 50 million cases annually and increasing emergency department visits. Despite advances in management, such as decompressive craniotomy and hypothermia, severe TBI still leads to poor outcomes in about 50% of patients, emphasizing the limited effectiveness of conventional therapies. This has led to the development of neurorestorative approaches to enhance brain function and recovery after injury. Literature was sourced from Google Scholar, ScienceDirect, and PubMed, with studies from 2015–2025, in English or Indonesian, and involving human or animal subjects. Neurorestorative strategies include cellular therapies (e.g., mesenchymal stem cells), neurostimulation (invasive and non-invasive methods), pharmacological interventions (e.g., erythropoietin and statins), and supportive therapies (e.g., hyperbaric oxygen). Cellular therapy shows promise in promoting neurogenesis and recovery, though large-scale trials are needed. Neurostimulation has been shown to improve consciousness and neurological function in patients with chronic consciousness disorders, while pharmacological and supportive treatments present mixed results and require more research. Neurorestorative therapies offer hope for TBI recovery, but study limitations, including design and sample size, prevent generalization. Further research and large-scale randomized clinical trials are necessary to ensure safety, effectiveness, and optimal integration of neurorestorative modalities.
The Influence of PSB Application on the Growth of Aloe vera in a Verticulture Cultivation System Handayani, Tri Suci; Rahmadina, Rahmadina; Selvia, Irda Nila
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.v25i3.9538

Abstract

Aloe vera is a tropical plant with significant potential to develop into a promising agricultural sector in Indonesia. To achieve high-quality Aloe vera harvests, it is important to pay attention to several growth conditions, especially plant care such as fertilization. This study aims to determine the effect of Photosynthetic Bacteria (PSB) fertilizer application and the effective dosage of PSB fertilizer for the growth of Aloe vera using vertical farming techniques. This research used a Non-Factorial Randomized Block Design (RBD), with treatment factors including: no application of PSB fertilizer (P0), PSB 5 ml/l (P1), PSB 15 ml/l (P2), and PSB 30 ml/l (P3). The research involved several stages of observation, including plant height, number of leaves, leaf width, leaf thickness, and root volume. The observed data were analyzed using ANOVA with the help of SPSS 26. If the ANOVA test showed a significant effect, further analysis was carried out using Duncan's Multiple Range Test (DMRT). The results showed that the application of PSB fertilizer had an effect on plant height (22.8 cm), leaf width (2.76 cm), number of leaves (7 leaves), leaf thickness (8.91 cm), and root volume (4 cm³). The best average treatment result for Aloe vera growth was obtained at a dosage of 15 ml/l (P2), indicating that Photosynthetic Bacteria (PSB) fertilizer at a dosage of 15 ml/l (P2) was sufficient to supply the necessary nutrients for the growth of Aloe vera.
Male and Female Pigeons (Columba livia-domestica) Behaviors in Matchmaking Period: Patterns and Interactions Nugroho, Anwari Adi; Mardyah, Muthia; Saputra, Dian Andhi; Sarima, Sarima; Hidayad, Muhammad Nur
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.v25i3.9540

Abstract

This study explores the social interaction behaviors of domestic pigeons (Columba livia domestica) during the matchmaking period. The aim is to understand how multi-channel communication through body movements, vocalizations, and tactile contact affects the formation of pair bonds. This research employed an observational method at the Green House of Universitas Veteran Bangun Nusantara using the ad libitum sampling technique to record daily behaviors of pigeons kept in a confined space. The results revealed that male pigeons predominantly initiate interactions, while females exhibit selective responses that determine mating success. Characteristic behaviors such as bowing, cooing, billing, and allopreening were observed to follow a sequential pattern from orientation and approach to attraction and acceptance. These findings suggest that the intensity and consistency of social interactions significantly contribute to successful pair bonding in domestic pigeons. Future research may investigate hormonal or neurological aspects that underlie these social behaviors.
The Influence of Adding Kaliandra Flour on The Carcass and Abdomen Fat of Broiler Chickens Brillyanto, Arga Dahana; Yakin, Engkus Ainul
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.v25i3.9544

Abstract

The addition of alternative feed ingredients is one of the ongoing efforts to improve the quality and efficiency of broiler production, as it is one of the sources of animal protein that the community consumes in large quantities. Kalandra flour, which is known to have bioactive chemicals that can affect the performance and body composition of broiler chickens, is one possible feed item that can be utilized.The purpose of this study is to ascertain how adding calliandra flour affects the carcass and belly fat of broiler chickens. The study was carried out in Mangunharjo village, Jatipurno District, Wonogiri Regency, between March 21 and April 26, 2025. Four treatments and four replications were used in this experiment, which employed a completely randomized design (CRD). Each replication included four broiler chickens, for a total of 64 DOC. The following were the research treatments: P0: complete control feed; P1: complete control feed plus 1% calliandra flour; P2: complete control feed plus 3% calliandra flour; and P3: complete control feed plus 5% calliandra flour. Carcass weight, carcass percentage, and abdominal fat weight and percentage were the factors that were observed. Carcass weight, carcass percentage, and abdominal fat weight and percentage did not change significantly (P>0.05), according to the data. According to the study's findings, broiler chickens' carcass weight, carcass percentage, and abdominal fat weight and percentage were not significantly impacted by the addition of calliandra flour up to 5%.
Potential of Lactic Acid Bacteria Isolated from Fermented Tempe Food in Producing Fibrinolytic Enzymes Amanda, Nifsa Riski; Hastuty, Aerma; Putri, Dwi Hilda; Sulistiani, Sulistiani
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.v25i3.9554

Abstract

Cardiovascular disease is the leading cause of death worldwide, mainly due to blood vessel blockage caused by thrombus. Fibrinolytic enzymes are used to dissolve thrombus but are often limited by high production costs, low specificity, allergic reactions, and bleeding risks. As a safer alternative, bacteria from fermented foods offer several advantages, including low toxicity, cost-effective production, and high fibrin specificity, which reduces the risk of bleeding. This study investigated the potential and characteristics of fibrinolytic enzyme activity produced by lactic acid bacteria (LAB) isolated from tempeh. The fibrin plate method was used to identify LAB producing the enzyme, while enzyme activity was measured using the method of Varol et al. (2023), and protein concentration was analyzed using a modified Bradford test. Thirteen LAB isolates showed fibrinolytic activity, with isolate PG01-2B selected as the most promising. The highest enzyme production occurred on the second day, reaching 83.41 U/mL. Characterization showed activity with acetic acid buffer pH 6 (102.18 U/mL) and at 75 minutes incubation time (99 U/mL). These results indicate that LAB from tempeh has strong potential as a source of fibrinolytic enzymes and can function as an alternative therapeutic agent for thrombus-related cardiovascular diseases.
The Effect of Adding Kaliandra Leaf Flour on Broiler Chicken Performance Wardana, Afriyansah Bimaseta; Yakin, Engkus Ainul
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.v25i3.9566

Abstract

Since broiler production is one of the sources of animal protein that the community consumes in large quantities, efforts are being made to improve its quality and efficiency through the addition of alternative feed ingredients. One potential feed item that can be used is kalandra flour, which is known to have bioactive compounds that can impact the performance and body composition of broiler chickens. The purpose of this study was to determine the effect of adding calliandra leaf flour on the performance of broiler chickens. This study used a completely randomized design (CRD) with four treatments and four replications. There were four broiler chicks in each replication, for a total of 64 chicks. The study treatments were: 100% control feed was used at P0, 100% control feed plus 1% calliandra leaf meal was used at P1, 100% control feed plus 3% calliandra leaf meal was used at P2, and 100% control feed plus 5% calliandra leaf meal was used at P3. Feed conversion, average daily weight gain, and feed consumption were the observed variables. There was no visible variation in the study findings for feed consumption, average daily weight gain, and feed conversion (P>0.05). According to the study findings, broiler performance was not significantly affected by the addition of calliandra meal up to 5%.
Estimation of Mangrove Canopy Cover in The Carocok Tarusan Tourist Area Irawan, Fiska Asif; Mukhtar, Erizal; Solfiyeni, Solfiyeni
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.v25i3.9572

Abstract

The mangrove canopy cover is the uppermost layer in the mangrove vegetation group, which is formed by the crown (leaf group) of mangrove vegetation and covers the layer below. The purpose of the study is to determine the estimation of mangrove canopy cover in the Carocok area using the MonMang v2.0 application and to determine the influence of environmental factors on the mangrove canopy cover in the Carocok area. This research was conducted from December 2023 to January 2024 in the Carocok Tarusan tourist area, Pesisir Selatan Regency, West Sumatra.The method used in this study is the transect line method with the placement of transects carried out from the coastline to the land that has true mangrove vegetation. In the transect line, 20 plots were mapped with a size of 5 x 5 m. Then, the crown cover was measured using the MonMang v2.0 application using the hemispherical photography method on each plot. The results of the study show that the average mangrove canopy cover in this Carocok area is 69.19% and is classified as a medium category. The results of the study also showed that environmental factors between salinity, temperature, and pH had an influence on the mangrove canopy cover in the Carocok Tarusan area.
Gastropod Community Structure as a Bioindicator of Water Quality n The Seagrass Ecosystem at Samuh Beach, Bali Pratama, Made Dendy; I Putu Gede Eka Handrayana Putra; I Kade Alfian Kusuma Wirayuda
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.v25i3.9574

Abstract

Coastal ecosystems, such as the seagrass meadows at Samuh Beach, Bali, are vulnerable to anthropogenic pressures from high-intensity tourism. This degradation necessitates effective monitoring tools, and gastropod communities are potential bioindicators due to their sensitivity to environmental change. The objective of this study was to evaluate the gastropod community structure as a bioindicator of water quality within this ecosystem. The study was conducted from November to December 2024 at two stations representing different levels of human activity, using line transects and quadrat sampling. A total of 10 gastropod species were recorded. The community structure was characterized by low species diversity (H' = 1.25), moderate evenness (E = 0.52), and low dominance (C = 0.35). In contrast, all measured water quality parameters were found to be within optimal ranges for marine biota. The dissonance between the low biodiversity and favorable water chemistry suggests that the gastropod community is responding to unmeasured stressors, likely physical disturbances or specific pollutants associated with tourism. This study validates the efficacy of using gastropod assemblages as sensitive bioindicators of ecosystem health, capable of detecting impacts that standard water quality tests may miss. Continuous monitoring is recommended to safeguard the area.

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