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 2,949 Documents
 260   261   262   263   264 
Insect Diversity and Dominance on Malay Apple (Syzygium malaccense L.) Plantation at Liwa Botanical Garden, West Lampung, Indonesia Luna Lukvitasari; Ari Saputra; Yuyun Fitriana; Jon Hendra
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11830

Abstract

Malay apple (Syzygium malaccense L.) is a tropical fruit species grown in the fruit garden section of Liwa Botanical Garden, West Lampung, Indonesia. Insect communities play an important role in agroecosystems because they consist of both pest species and beneficial organisms such as predators and parasitoids. This study aimed to determine insect diversity and dominance on Malay apple plantations in the Fruit Garden of the Regional Technical Implementation Unit (UPTD) of Liwa Botanical Garden. The observation was conducted from September to October 2021 using direct observation, pitfall traps, and yellow sticky traps across five sampling plots arranged diagonally. Insect identification was conducted based on morphological characteristics using relevant literature. Species diversity was evaluated using the Shannon–Wiener diversity index (H’), while dominance was measured using Simpson’s dominance index (C). A total of 1,594 insect individuals belonging to nine orders were recorded, including Diptera, Hymenoptera, Orthoptera, Hemiptera, Coleoptera, Lepidoptera, Dermaptera, Odonata, and Neuroptera. The diversity index (H’) was 1.44, indicating moderate diversity, while the dominance index (C) was 0.43, suggesting low dominance. Diptera was the most abundant order, dominated by fruit flies (Bactrocera dorsalis and Bactrocera cucurbitae). The results indicate that the insect community structure in the Malay apple plantation is relatively balanced, although fruit flies have the potential to become major pests. Increasing plant diversity through flowering plants (refugia) is recommended to support beneficial insect populations and maintain ecosystem stability.  
Public Response to Waste from The Rejeki Gangsar Slaughterhouse in Bulurejo Riandika Adi Perdana; Ludfia Windyasmara
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11832

Abstract

Slaughterhouse waste is a residual material produced from the process of slaughtering animals in slaughterhouse facilities. This waste can include organic materials, such as blood, offal, bones and leftover meat, which can become a source of environmental pollution if not managed properly. Effective management of RPH waste crucial for reducing environmental impacts and maintaning public health. This study aims to determine public perceptions regarding the impact of slaughterhouse waste on environmental health and public welfare regarding waste around slaughterhouses. The method used in this study is a qualitative method by means of direct observation in the field by conducting a survey at the Rejeki Gangsar Slaughterhouse (RPH) and distributing questionnaires to the community for 30 sample respondents around the RPH which are divided into 2 radii, namely with a distance of less than 100 m and more than 100 m with 15 respondents each. The results of statistical analysis show that the community's response to air quality, the presence of animals that disturb water quality, the impact on health, and the socio-economic impact in this study, the different distances between houses affect the data to be non-significant. In this study, the distance between people's houses is different, so that people's responses are not uniform and are difficult to detect as significant in data analysis.
The Effect of Differences in The Use of EM4 Doses in The Fermentation of Teak Leaves (Tectona grandis) with The Addition of Molasses on Nutrient Content Aris Nur Wahab; Catur Suci Purwati
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11853

Abstract

Teak leaves are an abundant waste product, but their use as animal feed is still limited due to their high fiber content and relatively low crude protein content. Their nutritional quality can be improved through a fermentation process. This study aimed to determine the effect of various doses of EM-4 (Effective Microorganism 4) on teak leaf fermentation to obtain the most optimal nutritional content. In this study, the design used was a Completely Randomized Design (CRD) with 4 treatments and 3 replications resulting in 12 treatment combinations. Each of which was divided into treatments P0 (0 ml), P1 (6 ml), P2 (12 ml), P3 (18 ml) and fermented for 14 days. Data were analyzed using analysis of variance (ANOVA), followed by Duncan's Multiple Range Test at a significance level of 5%. The results of the Duncan test showed that with different doses of EM - 4, there was no significant effect on crude fiber, dry matter, and crude protein (P>0.05). Although descriptively, there was an increase in crude fiber and crude protein content, and a decrease in dry matter content with increasing EM4 dosage, these changes were not statistically significant. In conclusion, differences in EM-4 dosage during fermentation did not significantly affect the nutritional content of crude fiber, crude protein, and dry matter.
Analysis of Traders’ Satisfaction with the Quality of Beef Products at the Slaughterhouse of the Department of Food Security, Agriculture, and Fisheries (DKP3), Sragen Regency Asykal Fira Yahya; Catur Suci Purwati
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11874

Abstract

The quality of beef products plays an important role in determining trader satisfaction, especially in slaughterhouses that function as providers of safe, healthy, whole, and halal meat. However, several problems related to product quality, such as inconsistent color, fat content, and freshness, may lead to trader dissatisfaction. Therefore, it is necessary to analyze the level of product quality and its effect on trader satisfaction. The purpose of this study was to determine the level of beef product quality and trader satisfaction at the slaughterhouse managed by the Department of Food Security, Agriculture, and Fisheries of Sragen Regency. The research utilized a descriptive quantitative approach through a survey method. Information was gathered via a structured questionnaire featuring a Likert scale (1–5), which was given to 20 beef vendors. The analysis focused on variables such as product quality (including color, texture, marbling, smell, and freshness) as the independent variable and vendor satisfaction as the dependent variable. Data was examined using descriptive statistics along with simple linear regression. Findings indicated that vendors typically held a favorable view of the quality of beef products, as indicated by the prevalence of “agree” and “strongly agree” answers across all measured factors. The statistical analysis showed that product quality had a noteworthy positive effect on vendor satisfaction, indicated by a coefficient of determination (R²) of 0.915, suggesting that 91.5% of vendor satisfaction was affected by product quality. Furthermore, the regression analysis pointed to a significant connection (p < 0.05) between product quality and vendor satisfaction. In summary, the quality of beef products has a major impact on vendor satisfaction at the slaughterhouse. Thus, it is critical to uphold and enhance product quality to guarantee vendor satisfaction and maintain business viability.
Article Review: The Role of Cyrtorhinus lividipennis in Rice Planthoponus Control and Food Security Maulin Eka Cahyani; Rafa Aida Ainur Risna; Aura Helga Primadani; Sultan Nugraha; Loekas Soesanto
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11884

Abstract

Rice (Oryza sativa L.) is the primary food source for the majority of the world’s population, particularly in Asia. Leafhoppers are among the primary organisms that damage farmers’ crops, especially rice. Improper control measures, particularly the use of insecticides, can lead to negative impacts such as pest resistance and resurgence; furthermore, the use of insecticides can reduce natural enemy populations. The use of natural predators such as Cyrtorhinus lividipennis serves as an alternative in biological control. This article aims to examine the role of C. lividipennis in controlling brown planthopper populations in rice crops and its impact on food security. The method used was a literature review analyzing various research findings related to brown planthopper population dynamics, predator density, predation rates, and their impact on rice productivity. The results of the study indicate that the presence of C. lividipennis can significantly suppress brown planthopper populations through predation, with predation rates of 50–80%. Predator density is negatively correlated with brown planthopper populations. The impact of this control is also evident in reduced crop damage and increased rice growth and productivity. Thus, C. lividipennis has the potential to serve as a biological control agent to support food security.  
Effects of Incubation Temperature Variation on Embryonic Development Rate, Hatching time, Abnormality and Survival of Larval Sea Urchin Salmacis sphaeroides Tri Nabila Putri; Muhammad Junaidi; Victor David Nico Gultom
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11901

Abstract

Salmacis sphaeroides is a species of sea urchin that plays an important role in economic and ecological aspects. However, high utilization rates by the public have led to a natural decline in population, This is provide a controlled environment that ensures a high-quality supply of sea urchin, reducing dependence on natural stocks. This study aims to analyze the effect of temperature differences on the rate of S. sphaeroides development, hatching rates, abnormality and survival rates of sea urchin embryo maintained by incubation of temperature, consisting of 5 treatments and 3 repeats. The method used in this research was an experimental method using the Complete Randomization Design. ANOVA tests showed that temperature had a significant effect on the hatch resistance, abnormality and survival of sea urchin larvae. Duncan continued testing. The results of research on embryonic development rates, hatching rate, abnormality and survival rates of sea urchins are significantly different. The best development and hatching rate is found at 28℃-30℃, the best abnormality at 28℃ with a value of 15.0±2.3 ᵃ and the best survival rate is also recorded at 28℃ with a value of 79.3±10.1 ᶜ. These results identify that temperatures of 28℃-29℃ can be recommended for sea urchin cultivation, taking into account the balance between egg hatches, abnormality and survival rate of sea urchin larvae.
Carbon Footprint Optimization in The Palm Oil Industry Wike Pratiwi; Zulhalifah Zulhalifah; Norma Juniati
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11968

Abstract

This optimization can be done through the application of carbon accounting methods, the use of renewable energy, efficient waste management, and low-emission technology innovation. This study aims to analyze the main sources of greenhouse gas (GHG) emissions and formulate a carbon footprint optimization model in the palm oil industry at PT X. The method used is a descriptive quantitative approach with optimization simulation based on methane capture on liquid waste (POME). The results show that POME is the largest emission contributor (45%), followed by fertilizer (30%), fuel (20%), and electricity (5%). The application of methane capture technology can reduce emissions from 16,400 tons of CO₂e/year to 3,280 tons of CO₂e/year or by 80%. Cost analysis shows a carbon cost of IDR 305,000 per ton of CO₂e and can be reduced to IDR 155,000 per ton of CO₂e with the presence of carbon credits. These results indicate that methane capture is an effective and efficient optimization strategy in reducing carbon emissions in the palm oil industry. In conclusion, the largest source of carbon emissions at PT X comes from POME liquid waste, making it a top priority in the mitigation strategy. The implementation of methane capture has proven effective in reducing emissions by 80%, or 13,120 tons of CO₂e per year.
The Effect of No-Shearing Treatment on the Growth of Eucalyptus Seedlings (Eucalyptus pellita F. Muell) Alex Andriadi Harahap; Nurul Qomar; Hapsoh Hapsoh
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.11999

Abstract

Leaf pruning is often used to suppress transpiration, but experimental evidence in Eucalyptus suggests that reducing leaf area is not always necessary and can reduce seedling performance. This study aimed to evaluate the effect of leaf pruning on the survival and early vegetative growth during the seedling phase of Eucalyptus pellita F. Muell. This study used an experimental approach, using a completely randomized design (CRD) with 4 treatments and 5 replications. The results showed that the effect of leaf pruning on the growth of Eucalyptus pellita seedlings resulted in good average growth in vegetative growth parameters, such as normal plant life at 21 days after planting (DAP), plant height, stem diameter, number of leaves, seedling recovery rate, and root volume. This indicates that the presence of intact leaves plays an important role in supporting the process of photosynthesis, carbohydrate accumulation, and distribution of assimilates to growth organs, thereby increasing seedling vigor. On the other hand, root length and root dry weight did not show any significant effect, due to the presence of a root growth limiting factor, namely the tube, so that the roots could not grow to their maximum length (the roots only surrounded the tube position). The conclusion is that there is an effect of the treatment without leaf shears on the survival success and initial vegetative growth during the nursery phase of Eucalyptus pellita F. Muell.
Behavior and Predatory Ability of Several Predatory Insects at Different Prey Densities Junianto S. Batubara; Riska Romaito Nasution; Yosua Pangihutan Pardamean Alextio Sianturi; Mario Pani; Muhammad Sayuthi
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.10757

Abstract

Understanding predator behavior and predation capacity is essential for determining their potential as biological control agents. This study aimed to evaluate the searching time, handling time, and predation ability of three predators Syrphidae larvae, Coccinella sp. larvae, and Curinus coeruleus adults at different prey densities. Five prey-density treatments (5, 10, 15, 20, and 25 individuals) were tested using3 Heteropsylla cubana as prey for C. coeruleus and Rhopalosiphum maidis for Syrphidae and Coccinella sp. The results showed that increasing prey density significantly shortened the searching time of all predators. C. coeruleus demonstrated the fastest searching ability, followed by Syrphidae and Coccinella sp. Handling time also varied among predators, with C. coeruleus requiring the shortest time due to its chewing-type mouthparts, compared with the piercing–sucking mouthparts of Syrphidae and Coccinella sp. Predation capacity differed across predators; only C. coeruleus successfully consumed all prey at every density within 6 hours, while the other predators reached satiation at higher densities. Overall, C. coeruleus exhibited the highest efficiency across all parameters, indicating its strong potential as an effective biological control agent. Increasing prey density consistently enhanced predation activity, highlighting the importance of prey availability in predator effectiveness.
Impact of NPK Briquette Fertilizer on the Growth and Nitrogen Absorption of Tomato Adinda Putri Amanda; R. Arif Malik Ramdahan; Selvy Isnaeni; Rofi Syaepul Alim
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.10999

Abstract

The use of appropriate fertilizer is the main key to fulfilling the nutritional needs of plants and environmental sustainability. The appropriate fertilizer dosage will increase the amount of nutrients absorbed by plants, especially tomato plants, and can enhance the optimization of growth and yield, as well as reduce soil damage. This study aims to determine the impact of the addition of NPK briquette fertilizer on plant nutrient absorption and tomato plant growth. This research was conducted at the Screen House of the Agricultural Agrotechnology Study Program, Faculty of Agriculture, Tasikmalaya University of Struggle. Nutrient absorption analysis was conducted at the Soil Chemistry Laboratory, Faculty of Agriculture, Siliwangi University. This research method used a Completely Randomized Design (CRD) with four treatments, including 1) Control / without the addition of NPK briquette fertilizer, 2) 4.5 g dose of NPK briquette, 3) 6 g dose of NPK briquette, and 4) 7.5 g dose of NPK briquette. The results showed that the application of NPK briquette fertilizer at doses of 4.5 and 7.5 g affected the fresh weight of the shoots, total plant fresh weight, total nitrogen content, and nitrogen uptake of the plant. Furthermore, the application of NPK briquette fertilizer on plant height, stem diameter, root wet weight, and crown dry weight did not have a significant effect.

Page 262 of 295 | Total Record : 2949

 260   261   262   263   264 

Filter by Year

2013 2026


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