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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
 107   108   109   110   111 
Induction of Somatic Embryogenesis of Pontianak Siamese Orange Cotyledon Cultures on Murashige Skoog Media with the Addition of 2,4-D and Kinetin Zakiah, Zulfa; Turnip, Masnur
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6721

Abstract

Conventional citrus propagation has weaknesses, one of which is susceptible to CVPD(Citrus Vein Phloem Degeneration) and other diseases which are the main cause of the decline in population and production of pontianak siam orange plants in West Kalimantan. One alternative to in vitro propagation of citrus seedlings is the induction of somatic embryogenesis. The purpose of the study was to obtain the best combination of 2,4-D and kinetin concentrations for callus induction and somatic embryo induction from Pontianak siam orange cotyledon explants, observing the developmental phase (stage) of embryos formed. The implementation of the study used a factorial completely randomized design (CRD) consisting of 2 factors. The first factor is the concentration of 2,4-D consisting of 4 concentration levels, namely 0; 0.5; 1; 1.5; 2 mg/L. The second factor is kinetin concentration consisting of 4 concentration levels, namely 0; 0.5; 1; 1.5; 2 mg/L.The observation parameters include the time of callus emergence (hst), the percentage of explants forming callus (%), the texture and color of the callus, observing the stage of the embryo found. The results showed that 72% of treatments were able to induce callus from pontianak siam orange cotyledons with an average callus appearance at 7 hst. The callus formed is compact and crumbly with varied callus colors, namely white, yellowish, greenish and brownish. The best treatment that produces embryogenic callus is the combination of D0.5K0.5; D1K1; D0.5K1.5; D1.5K1.5 and D2K2 with the characteristics of crumbly callus and yellowish and brownish colors. The results of microscopic observations found that the somatic embryo phase formed was the pro-embryo phase.
Difference Results Bacteria Numbers with Variations Temperature and Check Time in The Elderly Urine Suspect Urinary Tract Infections (UTI) Septiani, Risma Dyah; Silviani, Yusianti
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6723

Abstract

Delays in examination have the potential to result in differences in the results of the number of bacteria in the examined specimens plus storage of specimens at non-optimal temperatures. The difference in the number of bacteria can be known by examining the Total Plate Count (TPC) in urine. The purpose of this study was to determine the differences in the results of germ numbers in terms of variations in examination delays and urine storage temperatures of elderly suspects with urinary tract infections (UTI).  The type of research conducted was experimental analytic with the subject of 4 elderly urine in Kratonan Village, Surakarta with criteria sampling technique. Research data were obtained through questionnaires and examination of total plate numbers with mayo technique examination, where the results were multiplied by a conversion factor of 102 CFU/ml.  The results were analyzed by SPSS statistical test using Two Way ANOVA which obtained a significant value of 0.915 (p>0.05). Then continued with SPSS data analysis using Tukey Pos Hoc aims to see the real difference of each variation. There is no difference in the germ count results with temperature variations and time delays in the urine of elderly suspected urinary tract infection (UTI) patients.
Undesirable Microbial Growth from The Biodegradation Process of Nypa Palm Fronds Suplemented with Cellulolytic Bacteria Culture Isolated from Nypa Palm Worms (Namalycastis rhodochorde) Williem, Albertus; Kurniatuhadi, Rikhsan; Setyawati, Tri Rima; Yanti, Ari Hepi
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6724

Abstract

Biodegradation of nipa palm fronds using cellulolytic bacteria on an in-vitro scale was conducted to produce feed for cultivating palm worms (Namalycastis rhodochorde). The spontaneous degradation process is thought to trigger the growth of other microbes from raw materials from unsterilized nypa palm fronds. This research aims to determine the presence of different microbes that participate in the degradation process of palm fronds supplemented with cellulolytic bacterial isolates. The biodegradation process was conducted using dry palm fronds that were not sterilized, without pressurized heat, for 30 days in a sterile container. Cellulolytic bacterial isolates were added to facilitate the process. The research results revealed three characteristics of bacterial colonies with two cell shapes: bacilli and spirals bacterial isolates. The study also identified the presence of protozoa that exhibited morphological similarities to the Ciliophora group. This research provides valuable reports for further studies on the biodegradation process of palm fronds, specifically about ensuring feed safety for cultivating nypa palm worms.
Management of Natural Resources at Batu Pinagut Beach, North Bolaang Mongondow Regency Herlindah, Herlindah; Botutihe, Nur Meyla Ulfiana; Bentearu, Fajran; Baderan, Dewi Wahyuni K.; Utina, Ramli
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6725

Abstract

The research was carried out in Boroko Village, North Bolang Mongodow Regency with the aims of: (1) collecting data on natural resources on the Batu Pinagut coastline (2) Describing the potential for developing natural resources on the Batu Pinagut coastline (3) Analyzing policies on damage control. Determination of the sample using purposive sampling technique. Data was collected using observation, interview, documentation and document recording techniques. The results of the research show: (1) Batu Pinagut Beach has coastal resource potential that has been developed, namely biological resources and non-biological resources (2) management of coastal resources in Pemuteran Village includes tourism coral reef conservation in terms of tourism service training (3) Resource policy needs regulations are enforced, so that there is balance, preservation and continuity of resources. The rules do not apply to all areas, but to areas needed for the spawning and breeding of marine biota. To manage this area, it is necessary to have a conservation area that is equally understood and recognized by every stakeholder, stakeholders, fishermen, government, community and government. The rules and policies that are implemented involve stakeholders which become a culture that develops in society so that protection/conservation areas become a necessity and are implemented consciously by the community.
Analysis of Fatty Acid and Protein Content in Chicken Heart Fed Maggot (Hermentia illucens) and Microalgae Aurantiochytrium sp Anugrah, Devi; Meitiyani, Meitiyani; Hutari, Andri; Astuti, Yuni; Lestari, Suci; Prameswari, Dhanti Cynthia; Afif, Muhamad Naufal
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6726

Abstract

Chicken is the most consumed food commodity in Indonesia. Chicken also contains protein which is needed by the body to maintain body strength. However, due to the Covid-19 pandemic, chicken prices have soared due to the increasingly expensive feed prices along with the increase in demand for chicken in the market. This study aims to determine the effectiveness of feeding Maggot Hermetia illucens and Microalgae Aurantiocyhtrium sp. as a source of protein and fatty acids in Joper chickens (Gallus domesticus). Using a completely randomized design (CRD) consisting of 6 treatments and 4 repetitions. Treatment P0 (100% Bran, Corn, Pur feed), P1 (Maggot 30%, microalgae Aurantiochytrium sp. 1.5%, Bran, Corn, Pur 68.5%), P2 (Maggot 35% and microalgae Aurantiochytrium sp. 2%, Bran, Maize, Pur 63%), P3 (Maggot 40% and microalgae Aurantiochytrium sp. 2.5%, Bran, Maize, Pur 57.5%), P4 (Maggot 45% and microalgae Aurantiochytrium sp. 3%, Bran, Maize, Pur 52%), P5 (Maggot 50% and microalgae Aurantiochytrium sp. 3.5%). Parameters observed were final body weight and daily weight gain rate of joper chickens. The results of this study showed that the provision of P5 treatment gave the best results in increasing protein and omega-3 levels with results of 18.19% and 4.53% respectively compared to the protein and omega-3 content of the control treatment which only amounted to 16.62% and 1.17% respectively. This study provides results with treatment P5 which has a major effect on the growth of joper chicken (Gallus domesticus). The results of this study can be an option for chicken feed because it is proven to increase protein and omega-3 content in chickens.
Diversity and Distribution Patterns of Dragonflies in The Region Bagek Kembar Ecotourism, Sekotong Pebrianti, Hasita; Ilhamdi, Mohammad Liwa; Yamin, M.
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6732

Abstract

Dragonflies have an important role as environmental bioindicators, especially as indicators of the success of mangrove ecosystem restoration projects and their distinctive color has becomes an ecotourism attraction, so this research is important to do. This research aims to determine the diversity and distribution patterns of dragonflies in the Bagek Kembar Sekotong Mangrove Ecotourism area. This is an explorative descriptive study and was carried out between December 2023-January 2024. The research method used was catching dragonflies with insect nets following three transect paths along the river flow in the Bagek Kembar Sekotong Mangrove Ecotourism area. Analysis of species diversity data using the Shannon Wiener diversity index and calculation of the dragonfly distribution pattern index using the variance test. Based on the research results, 9 species of dragonflies were obtained, including 8 species of dragonflies (Anisoptera) and 1 species of dragonflies (Zygoptera). The diversity index (H') of dragonflies at the observation location is 1,866. The conclusion is that diversity of dragonflies at the research location is in the medium category. The distribution pattern of dragonflies at the research location shows that one Potamarcha congener species has a regular distribution pattern and the other 8 species that had groups distribution pattern.
The Effect of Giving Trichoderma asperellum on Rice Plant Height in Organic and Inorganic Cultivation Putri, Lidya Eka; Anhar, Azwir; Violita, Violita; Vauzia, Vauzia
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6736

Abstract

The agricultural sector cannot be separated from the role of inorganic fertilizers to support plant growth, as is the case with rice cultivation. Farmers' dependence on using inorganic fertilizers has led to decreased soil fertility and damage to natural resources. One way to overcome this is to implement organic farming. Organic cultivation in this research uses the SRI (System of Rice Intensification) method, while inorganic cultivation follows conventional methods from local communities. The aim of the research was to determine the effect of giving Trichoderma asperellum on rice plant height in organic and inorganic cultivation. The research was carried out in September-December 2022 in Jorong Galo gandang, Nagari III Koto, Tanah Datar Regency, Biological Research Laboratory, and Plant Physiology Laboratory, Department of Biology, Faculty of Mathematics and Natural Sciences, Padang State University. This type of research is experimental. The research was structured using a Randomized Block Design, with 4 treatments, namely; O (Organic) OT (Organic + Trichoderma asperellum), A (Inorganic), AT (Inorganic + Trichoderma asperellum) and 5 repetitions. Observational data was analyzed by analysis of variance (ANOVA) using the SPSS application. If there are differences, continue with the DNMRT test (Duncan's New Multiple Range Test). The results showed that giving Trichoderma asperellum had no significant effect on rice plant height in organic and inorganic cultivation. Because the high rainfall at the research location caused the nutrients from each experimental plot to be washed away by the water.
Case Report: Effect of Ajwa Dates Consumption on LDL Levels in Perimenopausal Women Hamsah, M.; Irwan, Irwan; Mappaware, Nasrudin Andi; Zulfamidah, Zulfamidah; Royani, Ida; Bulango, Nursanti
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
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.v24i4.6737

Abstract

During perimenopause, there can be a decrease in estrogen production, which indicates the end of a woman’s reproductive years. The production of the hormone estrogen that continues to decrease will cause hypercholesterolemia. Decrease in LDL cholesterol levels can be increased by giving antioxidant properties, which are rich in vitamin C and contain flavanoids and phenolics that function as antioxidants. The method used in this study is Literature Review with Design Narrative Review. The result from the literature it was found the effect of giving ajwa dates (Phoenix Dactylifera L) before and after administration showed a change, namely a decrease in LDL levels after giving ajwa dates. This is because ajwa dates contain flavanoids, phenolics, and plant sterols that function as antioxidant that can prevent the formation of lipid peroxidation. The conclusion based on the results of the literature review, it can be concluded that giving ajwa dates to perimenopause women decreased LDL levels where ajwa dates have antioxidant functions to prevent lipid peroxidation to reduce LDL. The suggestion from the study is necessary to conduct further research on the effect of consumption of ajwa dates on LDL levels in perimenopause women using experimental methods of pretest and posttest design.
Literature Review: The Role of RET Gene Mutations in The Emergence of Hirschsprung Disease Azalia, Salsa Novela; Ahda, Yuni
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6740

Abstract

Hirschsprung’s disease is a congenital condition characterized by a failure of nerve function along the gastrointestinal (GI) tract, resulting in the absence of enteric ganglia in the most distal segment of the colon. Although the prevalence rate is 1:5000 babies born, Hirschsprung’s disease can have a significant impact on patients, especially in terms of quality of life. One of the main genetic factors often associated with the etiopathogenesis of Hirschsprung’s disease is the RET gene. This study aims to provide scientific insight into advances in the understanding of genetic variants associated with RET gene mutations and their role in causing Hirschsprung disease. The research design used was literature review, articles were collected based on sources derived from Google Scholar, PubMed, and EMBASE which included national and international journals published in the last 10 years. Based on the articles collected, it was found that the RET gene is essential for the growth, migration, and maturation of precursor cells into functional neurons. Mutations in the RET gene can interfere with the normal formation and function of nerve cells, leading to symptoms typical of Hirschsprung’s disease.
Characterization of Chitosan Isolated from Shrimp Shell Waste and Its Ability to Preserve White Tofu Bahri, Syamsul; Fadilah, Nur; Hanafi, Muhammad
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): 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.v24i2.6744

Abstract

The research has been conducted to characterize chitosan isolated from shrimp shell and also to determine the ability of chitosan in preserving organoleptic parameters of white tofu. Isolation of chitin was performed through two stages, namely deproteination and demineralization. Chitosan is obtained by adding NaOH on chitin in deacetylation process. The obtained chitosan was characterized using several methods. Molecular weight of obtained chitosan is 15 kDa with the degree of deacetylation is 80.3%, whereas analysis of water level, ash, and protein content are 0.3%, 32.1%, 3.79% in consecutively. The optimum concentration to preserve organoleptic parameters of white tofu is 15 minutes in 1% of chitosan.

Page 109 of 252 | Total Record : 2520

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