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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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Identification of Cashew Pests in Jatisari Village, Jatisrono District, Wonogiri District Octaviana, Dhea Cindy; Wiharti, Tri
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8599

Abstract

Cashew (Anacardium occidentale) is one of the export commodities with high economic value. However, cashew production in Indonesia faces serious challenges due to pest attacks that can reduce yields. This study aims to identify the types of pests that attack cashew trees in Jatisari Village, Jatisrono District, Wonogiri Regency, and to analyze the relationship between pest occurrence and environmental factors such as temperature, humidity, and rainfall. The method used in this study was direct observation in four hamlets with data collection through visual documentation and recording symptoms of pest attacks on plants. The results showed that there were 11 main pest species that attacked cashew, including Bemisia tabaci, Hyphantria cunea, Sanurus indecora Jacobi, Toxoptera citricidus Kirk., Helopeltis sp., Setothosea asigna, Orgyia definita, Euthalia aconthea, and Melanitis leda. These pests cause various forms of damage to plants, such as defoliation, flower and fruit drop, and stunted growth. Environmental factors such as temperature and humidity have been shown to have a significant impact on the level of pest infestation. This study provides insight for farmers in more effective and sustainable pest control efforts.
Identification of Coffee Plant Pests in Plantations in The Brenggolo Area, Jatiroto Sub-District, Wonogiri District Nurhayati, Suci; Wiharti, Tri
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8600

Abstract

Pests that attack coffee plants can have an impact on decreasing productivity and quality of coffee harvests in the area. This study aims to identify coffee plant pests in the Brenggolo area plantation, Jatiroto sub-district, Wonogiri district. This study was conducted for 2 months, from January 2025 to February 2025, at the Brenggolo village coffee plantation, Jatiroto sub-district, Wonogiri district. Data obtained from observations of plant samples and coffee berries attacked by pests, as well as interviews with managers and owners to obtain information on the types of pests and environmental conditions of the plantation land. The results of the study found several pests that attack coffee plants, including Hypothenemeus hampei (Coffee Berry Borer Pest), Xylosandrus compactus (coffee branch borer pest), Ferrisia virgate (Whitefly), Coccus viridis (green aphid pest), Pratylechus coffeae Nematodes (Root Wound Nematodes), and Sanurus indecora jacobi (Planthopper). Pest life is greatly influenced by environmental factors such as altitude, temperature and humidity. The geographical conditions of the Brenggolo plantation, which is at an altitude of 920 meters above sea level, with temperatures ranging between 20°C - 28°C and humidity of 81%, are an environment that supports the development of various types of coffee pests. Identification of pest types and environmental characteristics in the Brenggolo Plantation is expected to be the basis for the formation of an effective pest control strategy. With location-specific pest management, it is expected to increase the productivity and quality of coffee in the area.
Community Structure of Phytoplankton in The Waters of Bagek Kembar Mangrove Ecosystem Essential Area, Sekotong, West Lombok Jamiyyah, Shafro' Khuluq; Japa, Lalu; Ilhamdi, Mohammad Liwa
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8617

Abstract

The Bagek Kembar Essential Ecosystem Area (EEA) is one of the mangrove forest areas in Lombok Island. This mangrove forest area is managed and developed into an educational tourist attraction (Ecotourism) to know various types of mangroves. The existence of Bagek Kembar mangrove Ecotourism is very important to support the economic income of the surrounding community. The existence of these various activities will potentially affect the balance of the mangrove ecosystem and the biota that live in there. This study aims to determine the composition of phytoplankton species and the condition of their diversity in the waters of the Bagek Kembar Mangrove Essential Ecosystem Area, West Lombok. Descriptive exploratory research was the methodology used. A 20 µm plankton net was used to filter 100 L of water in order to sample phytoplankton. Formalin at a 4% concentration was then used to preserve the filtered water samples. Individual abundance, evenness, dominance, and the index of species diversity were computed in order to analyze the data. The findings revealed that there were five divisions and 84 phytoplankton species. The Bagek Kembar Mangrove Essential Ecosystem Area's waters had an average phytoplankton abundance of 2,770 ind/L. The species dominance index of phytoplankton was 0.192 (low category), the species evenness index of phytoplankton was 0.633 (evenly distributed), and the average phytoplankton species diversity index of 2.296 was categorized as moderate. According to the findings of this study, the phytoplankton community's stability in the waters of the Bagek Kembar Mangrove Essential Ecosystem Area fell into the medium range.
Mangroves as Carbon Sequesterers: Diversity and Carbon Estimation Study in Pantai Mekar Village, Muara Gembong District, Bekasi Regency Amin, Septian Faris Al; Pangestu, Agung Yoga; Dharma, Yossi; Sari, Nurika Arum; Maulidia, Oktarina; Octaviani, Eti Artiningsih; Anita, Vilda Puji Dini; Hasibuan, Mhd Muhajir; Dimyati, Ahmad Iqbal Wahid; Rahmasari, Shinta Nur; Agus, Ferri; Salimah, Wardah
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8618

Abstract

Mangrove forests are important for storing carbon dioxide (CO2) and reducing the effects of climate change. Indonesia possesses 20% of the global mangrove cover, which substantially impacts global climate mitigation efforts. However, understanding of the diversity of plant species in mangrove forests remains limited, as evidenced by the high rate of conversion of mangrove areas into aquaculture ponds, resulting in mangrove degradation. Our research in Pantai Mekar Village was conducted to augment information on mangrove plant species diversity in Indonesia, specifically in Bekasi Regency. Mangrove vegetation data were collected in Pantai Mekar Village, Muara Gembong, Bekasi from 8 to 12 July 2019. Data were collected using 2x2 m (seedlings and understory), 5x5 m (saplings), and 10x10 m (trees) plots. Importance value index (INP), Shannon-Wiener species diversity, evenness, richness, and carbon stock estimation were utilized to analyze the data. The study documented 21 species from 15 families. Species from the Acanthaceae family were predominant in the study site. Avicennia alba was the species with the largest biomass and carbon content. The estimated biomass contained in Mekar Beach is 380.42 tonnes/Ha with carbon sequestration of 190.21/Ha.
Analysis of Pteridophyta Plants Vegetation in Amporiwo Forest Area, Poso District Mudin, Nining Kasim
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8697

Abstract

Another role of ferns is as a source of plasma nutfah and also has the potential as a source of food and medicine. Analysis of pteridophyta plant vegetation aims to describe the types of Pteridophyta plants in the Amporiwo forest area. The type of research used in this study is a qualitative approach. The population and samples in this study were all types of ferns found in the Amporiwo forest area. Data analysis used a google lens camera and a reference book on Identification of Ferns (Pteridophyta). The results of the study showed that there were types of ferns (pteridophyta) with details of 5 orders, 9 families and 17 species, namely Pyrrosia lanceolata, Phymatosorus scolopendria. Pyrrosia piloselloides, Diplazium esculentu., Drynaria quercifolia, Christella leveille, Thelypteris pectiniformis, Asplenium nidus L., Nephrolepis biserrata, Pteridium esculentum, Dicranopteris linearis, Stenochlaena palustris, Dyplazium sorgonens, Ligodium palmatum, Lycopodiella cernua, Hipoderris brownie, Asplenium Polyodon. The conclusion is that the types of Pteridophyta plants in the Amporiwo forest area were found to be 5 orders, 9 families, and 17 species.
The Effect of Using Fermented Maggot Flour on The Growth of Tilapia Fish (Oreochromis niloticus) Taslim, Muhammad; Lestari, Dewi Putri; Rahmadani, Thoy Batun Citra
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8698

Abstract

Tilapia (Oreochromis niloticus) is one of the freshwater commodities that is most in demand by local and foreign commonities. The increasing price of fish feed has resulted in decreasing income for farmers. One of the feeds that has a high protein content is maggot. One of the procesing technologies to reduce fat content in maggots is by using fermentation technology. Thus, the purpose of this study is to ascertain the impact of fermented maggot flour on the growth of tilapia (Oreochromis niloticus). The experimental design used in this study was a Completely Randomized Design (CRD), with six treatments and three replications, resulting in the production of 18 experimental units: P0 (commercial feed 100), P1 (commercial feed 25% + 75% non-fermented maggot flour), P2 (commercial feed 25% + 75% fermented maggot flour), P3 (commercial feed 75% + 25% non-fermented maggot flour), P4 (commercial feed 75% + fermented maggot flour), and P5 (100% fermented maggot). The addition of maggot flour and maggot fermented flour with different doses, the best treatmens was obtained in P2 (commercial feed 25% + 75% fermented maggot flour). Treatment  P2 could increase the absolute weight growth rate, SGR,EPP, and produced the lowest FCR. However, the addition of maggot flour and maggot fermentation was not significant on absolute lenght growth, feed consumtion level, SR. Thus, the optimal concentration of maggot flour and maggot fermentation in this study was 75% maggot fermentation flour + 25% commercial feed.
Geographic Variation in the Physical and Mechanical Properties of Dendrocalamus asper Growing on Lombok Island Syahbana, Ardi; Rini, Dwi Sukma; Lestari, Dini
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8710

Abstract

Bamboo is one of the most important non-timber forest products due to its fast growth and excellent mechanical properties. This study aims to assess the impact of growing location on the physical and mechanical properties of Petung bamboo (Dendrocalamus asper) naturally growing on Lombok Island. A total of five bamboo culms were collected from different clumps at three locations, resulting in 15 individual bamboo samples. The tested parameters included moisture content, basic density, tangential and radial shrinkage, modulus of elasticity (MOE), and modulus of rupture (MOR). Data were analyzed using R software (version 4.3.1). The effect of location was examined using a mixed-effects model, where growing location and individual bamboo served as random effects. The results indicate that individual variation has a greater influence on the physical and mechanical properties of D. asper than growing location, with variance components exceeding 50% for moisture content, basic density, MOE, and MOR. These findings suggest that the mechanical and physical properties of D. asper are primarily determined by intrinsic factors rather than environmental conditions. Further research is recommended to investigate additional factors, such as micro-environmental influences on bamboo properties.
Variation of Fingerprint Patterns Among Students at OSO University Based on Ethnicity and Gender Wahyuni, Muftiah Yasi Dwi; Raynaldo, Adityo; Marista, Etha; Bibas, Elpe; Kurnia, Fitriyan; Linda, Riza
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): 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.v25i2.8716

Abstract

Fingerprints are utilized for personal identification, as well as to identify ethnicity, blood type and gender. They are permanent and remain unchanged throughout lifetime, unless an injury causes skin damage. This study aims to examine the variation in fingerprint patterns among students at OSO University, considering ethnic and gender differences. This study used a purposive sampling method and at least 50 fingerprint samples from students at the Faculty of Natural Sciences and Marine Science, OSO University. Generally, the loop fingerprint pattern is found in approximately 54.67% of the total sample of students. The loop fingerprint pattern is most commonly found in the Bugis, Malay and Javanese ethnic, while the Dayak ethnic predominantly has the whorl pattern. The arch fingerprint pattern is only found in the Dayak ethnic group. It can be assumed that the arch pattern may act as a distinguishing characteristic among ethnic groups in West Kalimantan. This study can contribute to forensic science, especially in identifying individuals based on fingerprint patterns associated with ethnicity and gender.  This research can provide as a foundation for further studies that explore the relationship between fingerprint patterns and other demographic factors, such as age or geographic location.
Bioconversion of Organic Waste into Maggot (Hermetia illucens) as a Protein Source in Fish and Poultry Feeds Kusuma Wardhani, Hilda Aqua; Ratnasari, Desi; Kurnianto, Alexander Andi
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): 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.v25i1.8726

Abstract

Waste is an environmental problem faced by Indonesian society along with population growth. The high population growth causes an increase in waste generated by the community, both organic and inorganic waste. Organic waste management requires special attention so that innovations are needed in waste management that are not only environmentally effective, but also have economic value. One of the innovations in organic waste management is the bioconversion method. Dengan menggunakan metode telaah sistematis, penelitian ini bertujuan untuk melakukan telaah pustaka terkait potensi biokonversi limbah organik menjadi maggot sebagai sumber protein pada pakan ikan dan unggas. Pemanfaatan maggot, Hermetia illucens atau yang dikenal juga dengan sebutan Black Soldier Fly (BSF), dalam proses penguraian limbah organik, baik tumbuhan maupun hewan, telah dilaporkan dalam sejumlah penelitian sebelumnya. Pengumpulan data dilakukan dengan mengacu pada panduan Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) yang terdiri dari empat kegiatan, yaitu identifikasi artikel, penyaringan artikel, kelayakan, dan penyertaan. The results showed that Black Soldier Fly (BSF) can be utilised as a decomposer of organic waste through the bioconversion method. BSF maggot contains perfect nutrients that can be utilised as a source of protein in fish or poultry feed.
Antibacterial Activity of Foot Spray Preparations Extract of Jeruk Purut Leaves (Citrus Hystrix) and Robusta Coffee Leaves (Coffea canephora) Against Staphylococcus epidermidis Lestari, Seri; Nasution, Muhammad Amin; Dalimunthe, Gabena indrayani; Lubis, Minda Sari
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
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.v24i1b.8736

Abstract

A problem that is often found in Indonesia, especially on the feet and causes many people to lack self-confidence, is smelly feet. This odor is caused by bacteria on the skin and inside shoes. Bacteria like Staphylococcus epidermidis produce an unpleasant smell by degrading leucine from sweat, leading to the formation of isovaleric acid, which emits a foul odor. This issue can be addressed using plant materials such as jeruk purut leaves (Citrus hystrix) and robusta coffee leaves (Coffea canephora). This research uses an experimental method. Jeruk purut leaves and robusta coffee leaves are extracted through maceration and then formulated into a foot spray with extract concentrations of 1.5%, 2%, and 2.5%. The evaluation results indicate that the foot spray formulation meets the stability test parameters, including organoleptic properties and pH. In terms of hedonic testing, panelists preferred Formula 1, and no formula caused skin irritation. Antibacterial testing of all formulations showed strong antibacterial activity, with inhibition zone diameters of 11.9 mm for Formula 1 (1.5% concentration), 12.4 mm for Formula 2 (2% concentration), and 12.8 mm for Formula 3 (2.5% concentration) against Staphylococcus epidermidis. Statistical analysis using One-Way ANOVA showed that the antibacterial activity of the foot spray in inhibiting bacterial growth was significant at a 0.005 level, with a probability value (significance) of 0.00 < 0.05, indicating that the antibacterial activity of the foot spray can affect the growth of Staphylococcus epidermidis.

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