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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 2,562 Documents
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Economic Performance of Cattle Fattening Business in West Lombok Regency I Gusti Lanang Media; M. Taqiuddin; Maya Nachida; M. Prasetyo N
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4577

Abstract

This study aims to determine: (1) how much revenue fattening Bali cattle, (2) financial feasibility of the Bali cattle fattening, and (3) channel marketing of fattening Bali cattle in West Lombok. This study was conducted over three months from Mei to Juli 2016 Month with survey methods, the number of respondents 60 people. Analysis of the data used is the analysis of input-output, BC Ratio and Return On Investment (ROI). Specifically to determine the marketing channels used descriptive analysis. The results showed that (1) The average Farmer income of fattening Bali cattle Rp.6.466.058 per person and Rp. 1.616.514 per head. (2) Bali cattle fattening shoul be developed by the BC Ratio 1,128. ROI value of Bali cattle fattening is 12,84 %, higher than prevalling bank rate is curently7,5%. (3) The farmers in West Lombok Regency majority (63%) to market its livestock fatenned animals to market, the reason is more efficient in term of time. When livestock is sold, the farmer directly to buy feeder for subsequent fattening period.
Dragonfly Diversity in A Residential Environment Astrid Sri Wahyuni Sumah; Maisya Zahra Al Banna
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4579

Abstract

Dragonflies (Ordo Odonata) are attractive and colorful insects in aquatic and wetland ecosystems. Dragonflies have large, transparent and long wings which make them one of the most agile flying insects. Dragonflies are also one of the insects that are often used as water quality indicators. This study was to determine the diversity of dragonflies in three types of habitats and their correlation with environmental factors. The research was conducted in a residential area in Palembang City in November 2022 using the scan sampling method. The total number of dragonflies found was 18 species and 538 individuals divided into 2 suborders and 4 families. Orthetrum sabina dragonfly is the dominant dragonfly species found (136 sp). Meanwhile, Ischnura verticalis, Pseudagrion microcephalum, Agriocnemis rubescens and Nosoticta sp. is the rarest species of dragonfly to be found. The diversity value of the Shannon-Wiener index indicates that dragonflies prefer open habitats. Habitat shape and plant vegetation affect the number of dragonflies found, but does not affect the abundance of these dragonflies. The results of the analysis show that wind speed and temperature affect the presence of dragonflies during the observation.
Relationship of Comorbidity and Age to the Severity of Clinical Symptoms of COVID-19 at Mataram University Hospital I Made Arya Yogiswara Mahayasa; Moulid Hidayat; Prima Belia Fathana; Indana Eva Ajmala
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4581

Abstract

COVID-19 disease is a disease that arises due to infection with the Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2). The purpose of this study was to determine differences in clinical symptoms in elderly and non-elderly patients, as well as patients who had comorbidities and did not have comorbidities. This research is a type of cross-sectional study that was conducted by reviewing the medical records of COVID-19 patients undergoing treatment at Mataram University Hospital in 2021. Data was collected using a consecutive sampling technique. The statistical test used is the Chi-square comparative test. To assess the relationship of age and comorbidities to the severity of symptoms in COVID-19 patients. In this study, 86 subjects were selected based on the inclusion and exclusion criteria applied. The majority of subjects were in the 15-59 year age group, namely 66 (23.3%). With male sex 51 (60.5%) people. The majority of patients with comorbidities experienced severe/critical symptoms 16 (44.4%) and patients without comorbids experienced no symptoms or experienced mild symptoms 35 (35%). The majority of elderly patients experienced severe-critical symptoms 9 (45%) and the majority of non-elderly patients experienced no symptoms or experienced mild symptoms 42 (63.6%). The results of the bivariate analysis test showed a p-value = 0.001 for comorbids with severe symptoms, and a p-value = 0.003 for age with severe symptoms. There is a significant relationship between comorbidities and age on the severity of symptoms in COVID-19 patients.
Development of Free-Range Chicken (Gallus domesticus) Egg Embryos With Brood Incubation and Incubation Weyni Iskandaria; Syaprina Anggriani; Adella Shaharani; Mira Wahyuni
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4584

Abstract

Buras chickens (Gallus domesticus) also have several disadvantages, including the difficulty of obtaining good seedlings and lower egg production compared to purebred chickens, relatively slow growth so that the maintenance time is longer. In fact, people like buras chicken because it has high protein and low fat content. The researchers' goal was to look at a comparison of the embryonic development of free-range chickens using incubation and brood hardening for 7 days. The method used is by direct observation through candling which is carried out for 7 days. The treatment was carried out 2 times and the repetition was carried out 3 times. The results found in the development of embryos in hatching devices are not much different from those infested, this could be due to temperature and humidity factors that occur at that time. If the temperature is high (<40̊ C), then the embryo can die, while if the temperature is stable (38-39°C) the embryo can develop quickly.
Dynamic of Change in Soil Physical Properties and SoyBean Growth through The Application of Biochar on Lombok Vertisols Sukartono; Rika Andrianti Sukma Dewi; Arifin Aria Bakti; Bambang Hari Kusumo
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4590

Abstract

Vertisol is a type of soil whose mineral fraction is dominated by 2:1 type clay minerals (smectite) which have the property of swelling-shrinking periodically as the soil water content changes. However, these physical properties can be improved by the application of biochar so that it can support plant growth. The aim of this study was to evaluate the effect of biochar on changes in the physical characteristics of vertisols soils and growth performance of soybean plants. This research was conducted in Kawo Village, Pujut District, Central Lombok. This study was designed to test the application of two types of biochar, namely rice husk biochar (BS) and corn cob biochar (BJ) at several doses, namely 0, 15, 30 and 60 g/kg of vertisols soil and design using a randomized block design with 6 replications. The parameters measured were unit weight, soil density, porosity, soil tensile strength, available water capacity, aggregate stability, cole value, crack pattern and soybean growth test. The results showed that the application of biochar could improve the physical properties of vertisol soil and also has implications for improving the growth of soybean plants. Observational data showed that a dose of 60 g/kg of biochar, both rice husk and corn cob biochar, showed better changes in soil physical properties compared to biochar doses of 15 g/kg, 30 g/kg and without the addition of biochar. Besides that, the treatment of rice husk and corn cob biochar at a dose of 60 g/kg gave better vegetative growth of soybean plants.
Evaluation of Different Transition Periods in Feeding Live Feed for Tiger Shovelnose Catfish (Pseudoplatystoma punctifer, Castelnau 1855) Larvae Demas Agatri; Achmad Noerkhaerin Putra; Mustahal
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4592

Abstract

The production of tiger shovelnose catfish (TSN) is limited by the very low growth during feeding transition in phase larvae. This research aims to evaluate the difference in feed transition period   from nauplii Artemia sp. to Tubifex sp. on the growth and activity of digestive enzymes of TSN larvae. TSN larvae 1 dph (day post hatching) with total length of 4.05±0.16 mm and weight of 4.18±0.67 mg were used in this study. Nine aquariums with 10 L of water were stocked with larvae at a density 30 larvae/L. This study consisted of three treatments of different feed transition time in triplicates i.e. transition at 9 dph (P1), 10 dph (P2) and 11 dph (P3). The result showed that the transitional on 11 dph (P3) recorded the highest total length (36.9±0.56 mm), total weight (242.5±2.4 mg), daily length growth rate (13.43±0.81 %.mm/day), daily weight growth rate (25.4±0.06 %.mg/day), survival rate (81.7±3.1%), and protease enzyme activity (0.222±0.019 IU/mL) compared to 10 dph (P2) and 9 dph (P1). The transition period of 11 days is the mostappropriate time to change the feed for nauplii Artemia sp. to Tubifex sp. in TSN larvae because it produces the best growth and digestive enzyme activity values.
The Effect of Growth Regulating Substances Giberelin on The Growth of Cucumber (Cucumis sativus) Weyni Iskandaria; Nindi Darmawanti; Siti Nur Annisa Boang Manalu; Indayana Febriani Tanjung; Febry Ramadhani Hasibuan
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4603

Abstract

Cucumber is one of Indonesia's agricultural commodities which is in great demand by the public, but in an effort to fulfill the number of requests a way is needed to be able to increase the amount of production. One of them is the use of growth regulators in supporting the growth of cucumber seeds. Gibberellin is a growth regulator that stimulates the growth of plant stems and leaves. This study aims to determine the effect of using gibberellins on cucumber plants (Cucumis sativus). The method used in this study was direct testing with 4 treatments, namely 0 ppm, 150 ppm, 175 ppm and 200 ppm with each treatment being tested with 5 samples. The materials used in this study were cucumber seeds, sand, manure, water and the hormone gibberellin (GA3). The tools used are digital scales, measuring cups, label paper, scissors, ruler, tape measure, polybags and hoes. The results of the study found that in treatment VI (200 ppm) the hormone gibberellins had a more significant effect on the growth of cucumber seeds compared to treatments I (0 ppm), II (150 ppm and III (175 ppm).
Effectiveness of Garlic Extract Pesticide (Allium sativum) Against Leaf Films in Saws (Brassica juncean) Raja Siti Aisyah; Syaprina Anggraini; Zahwa Adiesty; Indayana Febriani Tanjung; Febry Ramadhani
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4612

Abstract

Indonesia has a large part of its territory in the form of agricultural land which results in some of its people working as farmers. Land processing and maintenance in the agricultural sector were found to be obstacles so that production decreased from what it should have been. This is the reason why the number of requests for crops cannot be fulfilled, which results in an increase in prices. The method used in a non-factorial Completely Randomized Design (CRD) by carrying out 4 comparisons of pesticide concentrations including K1 (10 cc of onion extract mixed with 90 ml of water), K2 (15 cc of onion extract mixed with 85 ml of water), K3 (20 cc of onion extract mixed with 80 ml of water), K4 (25 cc of onion extract mixed with 75 ml of water), K5 (30 cc of onion extract mixed with 70 ml of water). The materials used in this study included garlic extract and water. The tools used are hoes, soil testers, thermometers, gembor, measuring tools and dippers. The conclusion from this study was that the concentration comparison was carried out that the V treatment (30 cc + 70 ml liters of water) was effective in the use of natural garlic pesticides (Allium sativum) by reducing the number of leaf pests on mustard greens (Brassica juncean) by 23 individuals for 2 week of observation and 2 times of spraying.  
Effects of Mangosteen Peel Extract Encapsulated By Maltodextrin On Antibacterial Activities of Escherichia coli Andri Kusmayadi; Lovita Adriani; Abun; Muchtaridi; Ujang Hidayat Tanuwiria
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4627

Abstract

Mangosteen peel extract contains good antibacterial compounds and is thought to be better when microencapsulated is formed. This study aimed to determine the effects of formulation of mangosteen peel ethanol extract associated to maltodextrin on activities of Escherichia coli. It was conducted by disk diffusion method according to Kirby-Bauer test in Mueller Hinton Agar (MHA) using three different concentrations namely: 100, 75, and 50 (%). Each formulation was tested as many as 10 µL disk -1 consisted of each treatment. The employed maltodextrin was obtained by enzymatic processing of arenga starch. Nine formulations were tested by measuring their bacterial inhibition activity in a Mueller Hinton Agar (MHA) medium.  The results showed that the effects of formulation between mangosteen peel ethanol extract and maltodextrin had the significant effect (P<0.05) on the antibacterial activities of Escherichia coli. It had been shown the ability to actively inhibit the bacterial growth at medium levels.
The Utilization of Medicinal Plants in the Postpartum Care by Belaban Ella Village's Women of Belaban Resort of Bukit Baka Bukit Raya National Park (TNBBR) Yeni Mariani; Fathul Yusro; Yuliati Indrayani; Vera Jessika
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4638

Abstract

Belaban Ella village is in the Bukit Baka Bukit Raya National Park (TNBBR) area. The Belaban Ella village community still maintains its local wisdom in using plants to care for women after giving birth. This study aims to describe the local knowledge of the women of Belaban Ella village in utilizing plants for postpartum care. Respondents in this study were selected by purposive sampling and we conducted in-depth interviews with the assistance of a questionnaire. The result showed that women in Belaban Ella village used 25 species of plants in 6 treatment groups. Most of these plants are used to reduce abdominal pain and enhance the mother's breast milk. The most widely used plant family is Zingberaceae; the most used part is the leaves (61%). Grinding (40%) was the most used preparation method, with poultices (32%) and eating (28%) being the predominant method of use. Women in Belaban Ella village still using medicinal plants in postpartum care treatment as an effort to preserve their local knowledge.

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