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Kota mataram,
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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 2,722 Documents
 269   270   271   272   273 
Identification of Leaf Miner Pests and Parasitoids of The Sembalun Lombok Arabica Coffee Variety Mega Puspita Sari; Bambang Supeno; Wahyu Astiko
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.v26i2.11994

Abstract

Arabica coffee (Coffea arabica L.) is an important plantation commodity cultivated in the Sembalun Highlands, Lombok. However, leaf miner infestations can reduce plant productivity by damaging leaf tissues and disrupting photosynthesis. This study aimed to identify leaf miner pests and associated parasitoids on several Arabica coffee varieties and to evaluate infestation intensity. The research used a quantitative desriptive approach with field survey methods. Sampling was conducted using systematic random sampling on five Arabica coffee varieties: Yellow Caturra, Red Caturra, Typica, Kobra, and Lini-S. Leaves showing leaf miner symptoms were collected weekly, reared in the laboratory, and identified morphologically. Infestation intensity was calculated using the Natawigena method and analyzed decriptively. The result showed that the leaf miner belonged to the order Lepidoptera, family Gracillariidae, genus Phyllocnistis, while the parasitoid belonged to the family Eurytomidae. The average infestation intensity was catagorized as moderate, with the highest infestation on Yellow Caturra dan the lowest on Lini-S. The presence of parasitoids indicates their potential role as biological control agents in sustainable Arabica coffee pest management.
Phytoremediation of Linear Alkylbenzene Sulfonate (LAS) Detergent Using Azolla microphylla and Ludwigia adscendens Ifa Ulya Fitriyani; Fida Rachmadiarti
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.v26i2.12039

Abstract

The increasing use of detergents has the potential to cause water pollution due to their surfactant content, particularly Linear Alkylbenzene Sulfonate (LAS), which is toxic to aquatic organisms and poses a risk to human health. One approach to mitigating LAS pollution is phytoremediation. Although phytoremediation has been widely practiced, studies comparing the effectiveness of two plant species remain limited. This study aims to determine the effects of plant species, LAS concentration, and their interaction on the reduction of LAS levels in water, chlorophyll levels in leaves, and plant fresh biomass. This study is an experimental study using a Randomized Block Design (RBD) with two treatment factors: plant species (Azolla microphylla and Ludwigia adscendens) and LAS concentration (0 ppm, 10 ppm, and 20 ppm). The observed parameters included LAS concentration in water, leaf chlorophyll content, and plant fresh biomass, which were analyzed using two-way ANOVA and Duncan’s test, and environmental physicochemical parameters were analyzed using quantitative descriptive analysis and compared with applicable quality standards. The results showed that plant species, LAS concentration, and their interaction significantly affected LAS concentration in water, leaf chlorophyll content, and plant fresh biomass. The highest reduction in LAS occurred in the Ludwigia adscendens treatment (10 ppm) at 99.200%, while the lowest was in the Azolla microphylla treatment (20 ppm) at 96.983%. The results of the study prove that Azolla microphylla and Ludwigia adscendens have the potential to be used as phytoremediation agents for LAS contamination.
Relationship between Proximate Characteristics and pH Value with Total Lactic Acid Bacteria in Etawa Goat Milk Annisa Farma; Djong Hon Tjong; Endang Purwati; Anthoni Agustien; Annisa Khaira
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.v26i2.12044

Abstract

Etawa goat milk is a highly nutritious food source with strong potential to be developed as a functional food. Its nutritional components—such as protein, fat, and water content—along with the presence of lactic acid bacteria (LAB), contribute to its health benefits. This study aimed to analyze the proximate characteristics and pH value of Etawa goat milk and to evaluate their relationship with the total LAB count. Milk samples were collected from three locations in Padang City: Gunung Pangilun, Korong Gadang, and Padayo. Proximate analysis was conducted using standard methods from the Indonesian National Standardization Agency, while total LAB was determined using the Total Plate Count method on MRS Agar media. The results showed that moisture content ranged from 86.11–88.93%, protein content from 3.64–4.17%, fat content from 4.00–5.00%, and pH values from 6.70–7.00. The total LAB ranged from 30.66×10⁸ to 48.33×10⁸ CFU/mL, exceeding the minimum threshold required for probiotic sources. Samples with higher protein and fat content tended to have higher LAB counts. In addition, high moisture content and near-neutral pH supported microbial growth. Therefore, the proximate characteristics and pH value of Etawa goat milk are associated with LAB counts, indicating its potential as a natural probiotic source. The findings of this study provide scientific evidence for the utilization of Etawa goat milk as a natural probiotic product and may contribute to the development of dairy-based functional foods and community nutrition programs.
Relationship Between Nutritional Status and Fine Motor Skill Development of Class B PAUD Students in Kediri District, West Lombok Nina Anggraini; Kusmiyati Kusmiyati; Dewa Ayu Citra Rasmi
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.v26i2.12059

Abstract

This original research paper employs a quantitative cross-sectional analytic design to investigate early childhood development in a specific Indonesian setting. This study aimed to analyze the relationship between nutritional status and fine motor skill development in class B preschool children (aged 5–6 years) in Kediri District, West Lombok, Indonesia. A quantitative cross-sectional analytic design was used. The sample consisted of 67 children from five PAUD selected by proportional random sampling. Nutritional status was assessed using BMI-for-age (IMT/U) based on WHO standards, while fine motor skill development was measured through structured observation using seven indicators. Data were analyzed using Chi-Square and Fisher's Exact Test. Results showed that most children had normal nutritional status (67.1%), 29.9% were undernourished, and 1.5% each were overweight and obese. Fine motor skill development was in the "Very Well Developed" category for 76.1% of children and "As Expected" for 23.9%. Statistical evaluation showed no meaningful connection between nutritional status and the development of fine motor skills (p = 0.756 > 0.05). While descriptively a larger percentage of kids with "Very Well Developed" fine motor skills was noted in the normally nourished group (80.0%) than in the undernourished group (75.0%), the disparity was not statistically important. This study concludes that nutritional status does not have a significant link to the growth of fine motor skills in early childhood education (PAUD) Grade B children in the Kediri District of West Lombok.
Mechanical Control of Heliothis virescens and Pseudomonas syringae in Tobacco Cultivation in Bengawan Solo Novia Larasanti; Mutimanda Dwisatyadini
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.v26i2.12071

Abstract

This study aims to evaluate the effectiveness of controlling Heliothis virescens infestation and Pseudomonas syringae Infection using synthetic pesticides on Nicotiana tabacum cultivation In Bengawan Solo, East Java, Indonesia. Results showed a decrease In pest density (from 6.8 to 3.7 individuals per plant), disease Intensity (from 52.0% to 30.7%), and leaf damage (from 48.5% to 26.4%). Furthermore, statistical analysis revealed significant differences between treatments (p < 0.05). Mechanical control significantly reduced the Incidence of pests and diseases In tobacco cultivation, with suppression efficiencies reaching 46.5% and 41.0%, respectively . In conclusion, farmer-led mechanical control Is an effective, low-cost, and sustainable strategy for managing pests and diseases In tobacco cultivation under tropical agroecological conditions, with potential to reduce dependence on synthetic pesticides and support environmentally friendly agricultural practices.
Bird Biodiversity In The Mangrove Ecosystem Of Pannikiang Island, Balusu District, Barru District Makkatenni Makkatenni; Jalil Jalil
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.v26i2.12080

Abstract

Pannikiang Island, situated within the Barru Regency, is a diminutive landmass predominantly characterized by mangrove flora and serving as a habitat for a diverse array of avian and chiropteran species. This investigation, undertaken from August to October 2024, was designed to ascertain the population density, species richness, and conservation standing of the birdlife inhabiting Pannikiang Island. Employing an exploratory research methodology, data were systematically gathered utilizing the Point Count technique across two designated observation points. The analysis of species heterogeneity was conducted through the application of the Shannon-Wiener Index formula, while species equitability was assessed according to the criteria established by Odum (1971). The findings revealed the presence of 30 distinct bird species within the mangrove ecosystem, with 28 species identified at station 1 and 22 species at station 2. The calculated diversity index for avian populations stood at 2.44 at station 1 and 2.77 at station 2, both values falling within the intermediate range of diversity. The Shannon's evenness index (E) for species distribution at observation station 1 was determined to be 0.82, while at station 2, it was recorded as 0.79. These values indicate a high degree of uniformity in species composition across both locations, suggesting that most avian species observed are present at all sampling sites. Furthermore, two species, the Oriental Darter (Anhinga melanogaster) and the Greater      Adjutant (Mycteria cinerea), are identified as protected under the         Indonesian Minister of Environment and Forestry Regulation No. P.106/MENLHK/SETJEN/KUM.1/12/2018. Globally, the International Union for Conservation of Nature (IUCN) classifies both of these species as Near Threatened (NT), indicating a heightened risk of endangerment in the wild.
Effectiveness of Edible Coating Aloe Vera on the Quality of Papaya Fruit (Carica papaya L) During Storage Fathia Bardevi; Eva Nauli Taib; Nurdin Amin; Zuraidah Zuraidah; Lina Rahmawati
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.v26i2.12097

Abstract

Papaya (Carica papaya L.) is a highly perishable climacteric fruit with limited shelf life at room temperature due to rapid respiration and transpiration. This study aimed to evaluate the effect of different concentrations of Aloe vera gel edible coating on weight loss, color change, and fruit firmness of California variety papaya during room temperature storage. A Completely Randomized Design (CRD) with four treatment levels was applied: K0 = 0% (control), K1 = 60%, K2 = 80%, and K3 = 100% Aloe vera gel concentration, each replicated four times. Papaya fruits were coated by immersion for 5 minutes and stored at room temperature (±25–28°C) for 8 days. Parameters measured included weight loss (%), fruit color (L*, a*, b* values using a colorimeter), and fruit firmness (Newton, using a penetrometer). Data were analyzed using one-way ANOVA at a 5% significance level, followed by Duncan's Multiple Range Test (DMRT). Results showed that Aloe vera gel edible coating significantly affected all quality parameters during storage. Treatment K2 (80% concentration) consistently demonstrated the best performance, exhibiting the lowest weight loss (1.0775%), most effective inhibition of color changes (highest b* value of 56.400 on day 6; lowest a* value of 2.450 on day 8), and highest fruit firmness (2.800 ± 0.356 N) compared to other treatments. The semi-permeable layer formed at this optimal concentration effectively reduced transpiration and respiration rates without triggering anaerobic fermentation. It is concluded that Aloe vera gel edible coating at 80% concentration is the most effective treatment for maintaining papaya fruit quality during room temperature storage.
Ethnobotanical Study of Plant Utilization in the Balinese Hindu (Metatah) Ceremony in Baubau Ni Made Supreni; Jumiati Jumiati; S. Hafidhawati Andarias
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.v26i2.12099

Abstract

The use of plants in traditional societies is not only utilitarian but also plays an important role in cultural practices and religious ceremonies as part of an ethnobotanical knowledge system rich in symbolic meanings. This study aimed to identify plant species used, describe the plant parts utilized, and reveal their symbolic meanings in the Metatah (tooth-filing) ceremony among Balinese Hindu communities in Ngkaring Karing Village, Baubau. A descriptive qualitative approach was applied using purposive sampling involving tokoh adat (traditional leaders with knowledge of symbolic meanings), pemangku (Hindu religious leaders responsible for ritual practices), and serati (ceremony specialists responsible for preparing ceremonial materials, particularly plant materials). Data were collected through direct observation, semi-structured interviews, and documentation. The results showed that 38 plant species were used in the Metatah ceremony without substitution, indicating strong consistency in cultural values and knowledge transmission. The plant parts utilized included leaves, flowers, fruits, seeds, stems, and rhizomes. Each plant carries symbolic meanings related to purity, life, prosperity, spiritual cleansing, protection, balance, harmony, and the relationship between humans, nature, and the spiritual realm. This study concludes that plant utilization in the Metatah ceremony is deeply embedded in cultural and symbolic systems, reflecting the continuity of local ethnobotanical knowledge within Balinese Hindu communities in diaspora and contributing to its documentation and preservation.
Overview of Knowledge and Behavior of University of Mataram Students Regarding Proper Medication Disposal Rifqi Rizqullah; Mahacita Andanalusia; Lale Justin Amelinda Elizar
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.v26i2.12122

Abstract

Incorrectly throwing away unused or expired drugs can negatively impact the environment and public health by causing pollution. College students, who frequently take medications on their own and keep them, might add to this issue. This study aims to assess the knowledge and disposal behavior of students at Universitas Mataram regarding proper medication disposal practices. This study employed a descriptive quantitative design with a cross-sectional approach. Data were collected online from 428 respondents selected through purposive sampling using the ReDiUM (Return and Disposal of Unused Medications Questionnaire). Data were analyzed using descriptive univariate analysis to determine the frequency distribution and percentage of respondents’ knowledge and behavior categories related to medication disposal practices. The results showed that most respondents had a low level of knowledge regarding proper medication disposal, while only a small proportion demonstrated high knowledge. In terms of behavior, the majority of respondents exhibited moderate disposal practices, whereas good disposal behavior was found in fewer respondents. These findings indicate that students’ understanding and practices regarding proper medication disposal are still not optimal. In conclusion, Universitas Mataram students generally demonstrated insufficient knowledge and moderate behavior regarding proper medication disposal. This condition highlights the need for educational interventions and awareness programs related to pharmaceutical waste management among university students. Practical implications of this study include the development of campus-based health promotion programs, medication take-back campaigns, and public health education initiatives to encourage environmentally safe medication disposal practices.
Microplastic Analysis in Digestive Tracts of Baronang and Goatfish in Kuta Lombok Ninsanti Aura Jasanti; Lalu Zulkifli; Syamsul Bahri; Karnan Karnan
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.v26i2.12147

Abstract

Microplastic pollution has become a significant environmental problem in marine ecosystems, particularly in coastal areas impacted by increased anthropogenic activity. The coastal waters of Kuta, Lombok, are potentially exposed to plastic waste from tourism and fisheries, which can degrade into microplastics and enter the marine food chain. This study aims to identify the types, abundance, and characteristics of microplastics in the digestive tracts of rabbitfish (Siganus canaliculatus) and goatfish (Parupeneus multifasciatus). The study used a modified NOAA method for 60 fish samples, including hydrogen peroxide (H₂O₂) digestion and NaCl density separation, followed by microscopic observation. The results showed that microplastics were present in both fish species, consisting of fiber and fragment types, with fibers being the dominant type. Microplastic abundance was relatively low, at 0.6 particles/individual in rabbitfish and 0.5 particles/individual in goatfish. The dominant colors observed were black, blue, and red. These findings indicate that microplastic contamination has occurred in the study area, albeit at a relatively low level. Therefore, better plastic waste management and increased public awareness are recommended to reduce further contamination in coastal ecosystems.

Page 272 of 273 | Total Record : 2722

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