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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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Performance Comparison Between Texel and Garut Sheep Fed with the Same Feed Formula Murtanto, Ex Samuel; 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.v25i3.9987

Abstract

Sheep farming plays a strategic role in providing animal protein sources in Indonesia. One of the challenges often encountered in fattening is determining which sheep species will best respond to the same feed formula. This study aimed to compare growth performance and feed utilization efficiency between male Texel and Garut sheep fed with identical feed compositions. A total of 12 male sheep aged 9–10 months, consisting of 6 Texels and 6 Garuts, were reared individually for 28 days. The diet consisted of 60% concentrate and 40% forage, with water provided ad libitum. Observed parameters included daily feed intake (g/head/day), average daily gain (ADG, g/head/day), and feed conversion ratio (FCR). Data were analyzed using an independent samples t-test at a 5% significance level. The results showed that Texel sheep had higher daily feed intake (921.25 g) compared to Garut (879.76 g), greater ADG (70.53 g vs. 56.65 g), and lower FCR (13.07 vs. 15.54). All differences were statistically significant (p < 0.05). These findings indicate that Texel sheep outperform Garut sheep in both growth rate and feed conversion efficiency, making them more suitable for intensive fattening programs based on locally available feed resources.
Effectivenessof the Anammox Process for Nitrogen Waste Treatment in Tropical Environments: A Comprehensive Review Frentina Murti Sujadi; Jefri Anjaini; Baruna Kusuma; Asro Nurhabib; Lilik Setiyaningsih; Setyo Budi Kurniawan
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.v25i3.9991

Abstract

The anaerobic ammonium oxidation (Anammox) process is a biological mechanism that converts ammonium and nitrite into nitrogen gas without the need for oxygen, making it a potentially efficient solution for nitrogen waste treatment. This study aims to analyze the effectiveness of Anammox in reducing nitrogen concentrations from various types of waste and compare it with conventional methods. This study was conducted using a systematic literature review approach on the effectiveness of the Anammox process in nitrogen removal from wastewater. The analysis was carried out by extracting information related to reactor types, operational parameters (pH, temperature, C/N ratio, and substrate concentration), nitrogen removal efficiency, and inhibitory factors. The results show that this process can consistently reduce ammonium and nitrite, with performance highly influenced by operational conditions. Factors such as microbial stability, temperature, and nitrite availability are the main determinants of success. This study confirms that Anammox offers a more energy-efficient approach, producing less sludge and being more environmentally friendly compared to nitrification–denitrification. Thus, Anammox technology contributes to the development of sustainable wastewater treatment systems while expanding scientific understanding of the role of Anammox bacteria in the nitrogen cycle.
The Relationship Between Age and Comorbidities (Type 2 Diabetes Mellitus and Hypertension) and Hearing Loss in Women Over 40 Years of Age Simanjuntak, Saurma O S; Herwanto, H R Yusa; Lubis, Yuliani M; Zahara, Devira; Kananda, Vive; Ashar, Taufik
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.v25i3.9999

Abstract

Hearing loss is a public health problem that increases with age and can be exacerbated by comorbidities such as type 2 diabetes mellitus (DM) and hypertension. This study analyzed the relationship between age and comorbidities (DM type 2 and hypertension) on hearing loss in women over 40 years old. A cross-sectional analytical study of 34 women over 40 years old in Kotamatsum IV Village, Medan. Hearing examinations were performed using pure tone audiometry and otoacoustic emission (OAE). Statistical analysis was performed using the Chi-Square, Mann-Whitney, and Kruskal-Wallis tests. There was a significant relationship between age and the degree of hearing loss (p=0.047), with the majority of subjects aged >50 years experiencing mild deafness. However, no significant relationship was found between comorbidities of type 2 DM and/or hypertension on the degree, type of hearing loss, or OAE results (p>0.05). Age was significantly associated with the degree of hearing loss, while type 2 DM and hypertension did not show a significant relationship. Further research is needed considering disease duration and treatment adherence to further understand the contribution of comorbidities to hearing loss.
Microbial Profile of Salted Parrotfish (Bajo) in Tanjung Luar Traditional Market Jannah, Mirriyadhil; Suwasono, Sony; Nalurita, Indah
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.v25i3.10005

Abstract

Salted parrotfish (Bajo) from East Lombok is a traditional product vulnerable to microbial contamination. This study aimed to identify microbiological hazards in Bajo salted fish marketed at Tanjung Luar Market. Ten samples were analyzed using Total Plate Count (TPC), yeast and mold enumeration, the Most Probable Number (MPN) method for coliforms and Escherichia coli, and selective isolation for Salmonella sp., Vibrio sp., and Staphylococcus aureus. TPC values ranged from 8.2 × 10⁴ to 1.5 × 10⁵ CFU/g, with several samples exceeding the SNI 2721:2009 limit (1 × 10⁵ CFU/g). Yeast and mold counts (1.2 × 10² – 6.8 × 10⁴ CFU/g) remained below the BPOM threshold. All samples contained coliforms (15–46 MPN/g), and most were positive for E. coli (up to 15 MPN/g), surpassing the SNI limit (<3 MPN/g). Salmonella sp. was not detected, whereas Vibrio sp. was found in three producers. Staphylococcus aureus was present in all samples (1.3 × 10² – 2.5 × 10² CFU/g), though still below the permitted limit (1 × 10³ CFU/g). These results indicate that Bajo salted fish remains contaminated with hygiene indicator bacteria and pathogenic microorganisms, particularly E. coli and Vibrio sp., posing potential health risks. Strengthened hygiene and sanitation practices in processing, storage, and distribution are essential to ensure product safety.
Nucleoside Antiviral Therapy for Herpes Zoster: A Literature Review Ain, Nisrina Huurul; Rahmatullah, Lalu Mas’ud; Utari, Widi Gustita; Nuralyza, Imasayu; Salsabiella, Baiq Rani; Maghfirahandini, Reivirly Khairadaty; Aini, Siti Rahmatul; Nurhidayati, Nurhidayati
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.v25i3.10006

Abstract

Herpes zoster is a viral skin infection caused by the reactivation of the varicella-zoster virus, which remains latent in the dorsal root ganglia of the spinal cord and the cranial sensory ganglia. One of the most widely used classes of antiviral agents in the treatment of herpes zoster is nucleoside analogs. This study aims to review the use of nucleoside analogs in the management of herpes zoster. The method employed was a literature review of relevant research articles. The findings indicate that nucleoside analogs commonly used in herpes zoster therapy include acyclovir, valacyclovir, famciclovir, and brivudine. These agents are administered in various doses, routes, and therapeutic purposes, such as alleviating acute symptoms, accelerating skin lesion healing, preventing postherpetic neuralgia, and serving as prophylactic therapy in special conditions such as cancer or organ transplantation. Overall, the use of nucleoside analogs has proven effective in inhibiting varicella-zoster virus replication, reducing symptom intensity, and minimizing the risk of complications.
Diagnosis and Management of Acute Respiratory Tract Infections (Pharyngitis and Laryngitis) Salsabila, Ericha Zabrina; Damayanti, Ida Ayu Andara; Wiguna, I Made Danuarta; Maulana, Muhammad Rafi; Ajmala, Indana Eva
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.v25i3.10013

Abstract

Acute respiratory tract infections (ARI), including pharyngitis and laryngitis, remain a highly prevalent disease in Indonesia and even globally. These respiratory infections are caused by the bacterium Streptococcus pyogenes, also known as Streptococcus beta hemolyticus group A. The purpose of this literature review was to identify acute respiratory tract infections (pharyngitis and laryngitis). Pharyngitis is more common in children and adolescents, while laryngitis is more common in infants and children. The review concluded that Streptococcus pyogenes is the main cause of bacterial pharyngitis, while laryngitis is an inflammation of the larynx that can be caused by a variety of factors, including bacterial or viral infections as well as non-infectious factors like irritation or trauma. In conclusion, a thorough understanding of acute pharyngitis and laryngitis, including causative factors, clinical manifestations, management, and prevention, is essential for both medical personnel and the general public in an effort to reduce the burden of these diseases and improve overall upper respiratory health.
Analysis of Environmental Carrying Capacity and Environmental Accompany Based on Ecosystem Services in Cultivation Areas in The Bengkayang Regency RTRW 2025-2045 Widiarso, Bambang; Riduansyah, Riduansyah; Junaidi, Junaidi; Agustine, Leony
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.v25i3.10014

Abstract

The preparation of regional spatial plans must be guided by the analysis of environmental carrying capacity and carrying capacity, the method of measuring environmental carrying capacity and carrying capacity based on ecosystem services with a spatial approach has a more appropriate use value. This study aims to identify and analyze the environmental carrying capacity and carrying capacity based on ecosystem services in the RTRW Cultivation Area of ​​Bengkayang Regency in 2025-2045. The research method uses the main basic data approach, namely the characteristics of the landscape ecoregion, natural vegetation communities, and land use. Data analysis uses expert-based evaluation methods, pairwise comparisons, and weighted sums to obtain the value of the ecosystem service index. The results of the study obtained water carrying capacity in accordance with the Decree of the Minister of Environment and Forestry No. 146 of 2022, the carrying capacity of water supply ecosystem services is dominated by the medium category of 61.126%, the carrying capacity of food supply services is high category 54.20%, the carrying capacity of climate regulation ecosystem services is dominated by the high category 54.83%, the carrying capacity of disaster protection ecosystem services is dominated by the high category 77.64%, the carrying capacity of flora and fauna supporting ecosystem services is dominated by the low category 88.73%, and the carrying capacity of genetic resource providing ecosystem services is dominated by the high category 63.75%. The conclusion is that the cultivation locations in the Bengkayang Regency RTRW for 2025-2045 are generally in accordance with the carrying capacity and environmental capacity based on ecosystem services.
Effect of NPK Fertilizer and Liquid Organic Fertilizer Lamtoro Leaves (Leucaena leucocephala spp. leucocephala) on The Growth of Cayenne Peppers (Capsicum frutescens L.) Sofian, M.; Raksun, Ahmad; Handayani, Baiq Sri; Zulkifli, Lalu
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.v25i3.10031

Abstract

One of the many advantages of lamtoro is that, due to its high nutrient content, it may be utilized as organic fertilizer. Utilizing POC can help plants meet their nutritional needs and avoid nutrient shortages. The purpose of this study is to ascertain how applying NPK fertilizer and liquid organic fertilizer derived from lamtoro leaves, both independently and together, affects the growth of chili plants. Five treatments using NPK fertilizer and liquid organic fertilizer derived from lamtoro leaves were employed in this study, which employed a completely randomized design with three replications. The impact of treatments on the growth metrics of cayenne pepper plants was assessed using a two-way anova test. The results showed that the application of liquid organic fertilizer (POC) derived from lamtoro leaves had a substantial effect on the number of leaves, leaf area, fresh weight, and dry weight. When NPK fertilizer was applied, plant height, leaf count, leaf area, fresh weight, and dry weight all increased. The application of a mixture of liquid organic fertilizer derived from lamtoro leaves and NPK fertilizer did not significantly affect the cayenne pepper plants' fresh weight, dry weight, number of leaves, leaf area, or plant height.  
Literature Review: Skin Aging in the Ederly Population Salsabila, Baiq Ghefira Rojwani Putri; Hardiant, Excell Defry; Suryani, Elsa Indah; Salsabila, Tsania Zulfa; Savitri, Puti Amelia; Untari, Lania Pradiva; Paradiesta, Andi Frieskha Naurah; Angelita, Puja Rizkina; Adidaifa, Muhammad Fikri; Musyarof, Disa Fadil; Hidayatullah, Audi
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.v25i3.10032

Abstract

Skin aging is a progressive degenerative process characterized by a decline in the structural and functional capacity of the skin to maintain its protective, regenerative, and homeostatic roles. It is influenced by both intrinsic factors, such as genetics, telomere shortening, mitochondrial dysfunction, hormonal changes, microbiota alterations, and decreased vitamin D production, and extrinsic factors, including ultraviolet radiation, pollution, smoking, oxidative stress, and lifestyle. Clinically, skin aging presents with thinning, dryness, loss of elasticity, fine to deep wrinkles, pigmentary changes, and benign skin lesions. The increasing elderly population, particularly in Indonesia, highlights the growing importance of addressing skin aging due to its impact not only on physical health but also on psychosocial well-being and quality of life. Management strategies include pharmacological approaches such as sunscreens, moisturizers, vitamin D and collagen supplementation, retinoids, and hormone replacement therapy, as well as non-pharmacological interventions including antioxidant-rich nutrition, hydration, allergen avoidance, wound care, dietary restriction, facial massage, and aesthetic procedures like stem cell therapy. Early prevention, timely recognition, and comprehensive management of skin aging are essential to support healthy aging and maintain the quality of life among the elderly.
Hypothyroidism: A Literature Review Hardiant, Excell Defry; Adidaifa, Muhammad Fikri; Salsabila, Tsania Zulfa; Maulana, Muhammad Rafi; Salsabila, Baiq Ghefira Rojwani Putri; Untari, Lania Pradiva; Suryani, Elsa Indah; Paradiesta, Andi Frieskha Naurah; Savitri, Puti Amelia; Rahmat, Basuki
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.v25i3.10033

Abstract

Hypothyroidism is a condition in which the thyroid gland is unable to produce enough hormones to meet the body's needs. This condition causes a slowed metabolism, which can lead to various symptoms such as fatigue, weight gain, dry skin, hair loss, constipation, cold intolerance, and facial puffiness. Given the widespread impact of hypothyroidism and the potential for serious complications, special attention is needed for early detection, diagnosis, and effective treatment of hypothyroidism. This literature review was conducted using journal review methods and data searches through sources such as PubMed, Google Scholar, and ScienceDirect. The search used the keywords "hypothyroidism," "hypothyroid," "thyroid gland," and "Hashimoto's thyroiditis." The results of the literature review found that the main cause of hypothyroidism is Hashimoto's thyroiditis, an autoimmune disease in which antibodies attack the thyroid gland. Hypothyroidism is diagnosed by examining elevated TSH and decreased free T4 levels, as well as anti-TPO antibody tests to detect Hashimoto's thyroiditis. Treatment for hypothyroidism generally involves administering levothyroxine, a synthetic thyroid hormone, to replace the deficient hormone and normalize metabolic function. Healthy lifestyle support, such as diet and stress management, is also important to help optimally manage this condition. In conclusion, hypothyroidism is characterized by a decrease in thyroid hormone production and preventive management is pharmacological in the form of levothyroxine, while non-pharmacological management is in the form of regulating food intake.

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