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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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Identification of Ectoparasitic Bats in Buwun Cave Siti Rabiatul Fajri; Sucika Armiani
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3702

Abstract

Bats (Ordo Chiroptera) are one of the animals that have an important role in the sustainability of the ecosystem such as pollinators, seed dispersers, pest control and guano producers. In addition to their important role, bats are also animals (hosts) for several types of ectoparasites. Ectoparasites are parasitic organisms that live on the surface of the host's body. Generally, suck blood and live on the host’s hair, feathers, or skin. The research was conducted in Buwun Cave Prabu Village, Pujut District, Central Lombok Regency West Nusatenggara. Data collection on ectoparasites in bats was done manually with tweezers and a comb. Furthermore, samples of ectoparasites were identified based on sources of morphological evidence and referred to various references. The results showed that there were 3 species of bats identified, each consisting of 7 species of Eonycteris spelaea, 6 species of Rhinolopus simplex, and 3 Hipposideros diadema. Based on the results of the examination of the three bat species, there were 47 individual ectoparasites, which were identified in 3 species of ectoparasites, namely Cyclopodia horsfieldii, Amblyomma sp, and Meristapsis sp.
Solvent Characterization of Lycopene Extraction in Tomato Fruits as Sensitizer Candidates in Dye-Sensitized Solar Cell (DSSC) Devi Ayu Septiani; Agus Abhi Purwoko; Aliefman Hakim
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3787

Abstract

This study is an experimental study aimed at clarifying the characteristics of the solvent in the extraction of lycopene in tomato (Solanum lycopersicum) as a candidate photosensitizer for dye-sensitized solar cells (DSSC). The performance of DSSC  depends on the type of dye commonly used as a sensitizer. Tomatoes contain an lycopene. Yields of lycopene extract in tomatoes were characterized by FTIR and UV-Vis spectrophotometers. The extraction methods used in this study are the maceration method and liquid-liquid extraction. The procedure of this study was carried out in two main stages,  the extraction stage and the characterization stage. The first step was the extraction of lycopene from tomatoes using the maceration and liquid-liquid extraction methods. The maceration process compared the use of acetone and ethyl acetate as solvents. This extraction step produced  6.514 g (acetone) and 5.6702 g (ethyl acetate) lycopene extracts. The second step is to identify the functional groups of the compound formed using an FTIR spectrophotometer and use a UV-Vis spectrophotometer to determine the absorbance and maximum wavelength value of the lycopene and  M-lycopene complex. The results of the FTIR spectrophotometer test showed that using acetone as the solvent produced wavenumbers similar to lycopene compared to ethyl acetate.  UV-Vis spectrophotometer test results show the maximum wavelengths of the lycopene extract using acetone as the solvent were 447 nm, and 294 nm when ethyl acetate was used as the solvent. The Eg results revealed that the Eg values ​​for the acetone and ethyl acetate extracts were 4.52 eV and 2.68 eV. Based on the results of property analysis of the two solvents used, acetone was more suitable than ethyl acetate for the extraction of tomato lycopene used as a DSSC sensitizer.
Isolation of endophytic bacteria from the roots of Gliricidia sepium and their ability as IAA-producing bacteria and phosphate solubilizers Nurul Rizqiyah; Lalu Zulkifli; Agus Ramdani
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3790

Abstract

This study aimed to isolate endophytic bacteria from the roots of the gamal plant and to test its ability to solubilize anorganic phosphate dan to produce IAA (indol acetic acid). The steps in this study were the isolation of endophytic bacteria from the roots of the gamal plant taken from Woja District, Dompu Regency, the IAA test, and the phosphate solubility test using the colorimetric method. And then carried out the characterization of cells, colonies and biochemical properties of isolates. In this study, 6 isolates of endophytic bacteria from the roots of gamal plants were obtained which can dissolve phosphate, of which two isolates, namely ATG1 and ATG4 with phosphate solubility indices ranging from 3 and 4. These two isolates were also capable of producing IAA, with concentrations 16.48 and 17.72 ppm, respectively. Most of the isolates were Gram positive bacteria and were in the form of bacilli. The endophytic isolates obtained above are isolates that have the potential to be candidates for components of the biofertilizer formulation consortium in the future.
Isolation and Characterization of Mold on Furniture in Biological Laboratory Environment Using Contact Plate Method Wahyu Aji Mahardhika; Romario Dion; Mochammad Fa’iq Qoys Naufal; Warih Ramadhany; Arina Tri Lunggani
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3416

Abstract

The presence of molds in the environment around us can be beneficial or detrimental. Mold can be found in various places, including soil, air, plants, animals, water, and on material surfaces. One of the roles of mold is as a bio-degradator and biodeterioration agent on materials that are still used, so that it will cause harm to humans. This study aims to isolate and characterize the types of molds that exist on the surface of existing materials in the biology laboratory environment of Diponegoro University with the contact plate method. The method used is to attach a contact plate containing PDA to various materials such as tables, chairs, cabinets, and so on, then observe the macroscopic and microscopic morphology. The results obtained were five genera, there are Aspergillus, Penicillium, Eurotium, Rhizopus, and Absidia.
Karakteristik Bioekologi Rajungan (Portunus Pelagicus) Di Perairan Dusun Ujung Lombok Timur Didik Santoso; Karnan Karnan; Lalu Japa; Ahmad Raksun
Jurnal Biologi Tropis Jurnal Biologi Tropis. Vol.16 No.2 Desember 2016
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v16i2.3813

Abstract

Penelitian ini bertujuan untuk mengkaji ukuran rajungan yang tertangkap, menganalisisperbandingan jumlah rajungan jantan dan betina yang tertangkap, dan menganalisiskarakteristik habitat (salinitas, suhu, pH, dan bentuk dasar substrat perairan) di daerahpenangkapan rajungandi Dusun Ujung Lombok Timur. Jenis penelitian ini adalahpenelitian diskriptif dengan menggunakan metode survai dalam pengambilan data.Parameter yang diteliti adalah parameter biologi dan ekologi rajungan. Parameterbiologi yang diamati adalah jenis kelamin, dan lebar karapas, sedangkan parameterekologi adalah suhu, salinitas, dan pH perairam serta bentuk dasar substrat. Kondisisubstrat didominasi oleh fraksi pasir diikuti oleh fraksi lumpur dan fraksi liat. Hasilpenelitian menunjukkan bahwa kualitas air di daerah penelitian sangat sangat layak bagikehidupan rajungan, dengan sebaran suhu antara 290C – 300C. Salinitas perairan didaerah penelitian berkisar dari 31 sampai 32 ppt, dan Nilai pH perairan di lokasipenelitian berkisar antara 7.2 sampai 7.5. Distribusi lebar karaps rajungan di dominasioleh lebar diatas 100 mm baik jantan maupun betina. Proporsi lebar karapas rajunganjantan yang tertangkap dengan lebar diatas 100 mm adalah sebesar 41,7% dan betinasebesar 48,3% dari total sampel penelitian. Nisbah kelamin antara rajungan jantan danbetina adalah 0,8 : 1. Hal ini menunjukkan bahwa rajungan jantan dapat membuahilebih dari satu rajungan betina.
Maize Farmer Partnership Sustainability Study in the Post Arisa Project (Applied Research and Innovation System in Agriculture) in Kayangan District, North Lombok Regency Ajeng Kartika Pratiwi; I Wayan Suadnya; I. G. L Parta Tanaya; I Ketut Budastra; Taslim Sjah
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3821

Abstract

The University of Mataram is coordinating the ARISA Corn (Applied Research and Innovation System in Agriculture) Intervention Project, which includes partners such as Bank NTB Syariah, PT. Syngenta, the Department of Agriculture, Retailer of Subsidized Fertilizers, and buyers of produce have exceeded their target of increasing 30% in revenue. The purpose of this study consisted of a general objective, namely to analyze the sustainability of the ARISA partnership project in the village of Gumantar, Kayangan District, North Lombok Regency and a specific purpose to analyze the sustainability of the partnership of corn farmers who carried out the ARISA project in the village of Kayangan District, North Lombok Regency. This study uses descriptive methods and data collection techniques with survey techniques. The sampling technique used was purposive sampling (deliberately) with the consideration that only 1 of these villages participated in the ARISA project at the beginning of the project. The technique of determining respondents using proportional sampling was determined by 15 respondents because only the corn farmers participated in the ARISA project from the beginning to the end of the project. The data analysis used is qualitative descriptive analysis. The results show that the sustainability of the partnership in the ARISA project is still ongoing even though the program has ended in 2018. The partnership between farmers and Unram does not continue in terms of the application of technology. The partnership with Bank NTB Syariah through the application of people's business credit applications and purchasing inputs according to recommendations with new suppliers is still ongoing. Field agricultural extension staff manage and coordinate fertilizer distribution with RDKK and merchants. The collaboration with yield buyers continues with new purchasers.
Effect of Biofertilizer and Inorganic Fertilizer on Growth and Productivity of Shallot (Allium cepa L.) Tience E. Pakpahan; Taufiq Hidayatullah; Eva Mardiana
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3491

Abstract

Shallots are categorized as a national priority commodity as a kitchen spice needed every day. Shallots are a commodity that the production continues to increase from year to year. National shallot production increased by 4.9% from 2018 production of 1,502,436 tons and for the North Sumatra region it increased by 7.5% from 2018 production of 113,864 tons (BPS, 2019). This study aims to determine the effect of biofertilizer and inorganic fertilizer on the production of shallots (Allium cepa L.) using mini bulbs and mother bulbs on inceptisol soils in the Practice Field of the Medan Agricultural Development Polytechnic (Polbangtan Medan). This research was conducted from June to October 2021 at Polbangtan Medan. The study used a factorial randomized block design with three replicates and 18 treatment combinations of treatment dosage of organic fertilizer and biofertilizer treatment. Observation parameters in this study were soil analysis, plant height, number of leaves, number of tillers, wet weight, and dry weight. The results of soil analysis on parameters N-total (0.11%) in the low category, C-Organic (0.97%) in the low category, CEC (18.85) in the medium category, pH (7.01) in the neutral category, and Bray II (69.71) high category. This study revealed that the application of biological fertilizer and inorganic fertilizer had no significant effect on all observation parameters, both growth and tuber yield. For the Sanren variety, it is recommended that 5 ml/L of biofertilizer and 75% dose of inorganic fertilizer because it showed the best conditions for the parameters of the number of leaves, wet weight of the sample, and plot. For the Lokananta variety, it is recommended that 10 ml/L of biological fertilizer and 25% dose of inorganic fertilizer because it showed the best conditions for the parameters of plant height, number of leaves, and wet weight of the sample, and plot.
The Effectiveness Probiotic Drink of Salak Bali (Salacca zalacca) in Inhibiting Growth of Escherichia coli Nadya Treesna Wulansari; A.A. Istri Mas Padmiswari; Ida Ayu Manik Damayanti
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3515

Abstract

Salak bali (Salacca zalacca) is one of the local fruit varieties cultivated in Bali. This fruit contains antioxidants, so that it is potential to be used as a probiotic drink. Probiotic drinks containing live microbes can inhibit the growth of pathogenic microbes and balance the microbes in the intestines so that they can affect the health of those who consume them. This study aimed to determine the effectiveness of the probiotic drink of salak bali fruit juice (Salacca zalacca) in inhibiting the growth of Escherichia coli. The study employed experimental with a completely randomized design. Salak juice was fermented for 18 days and harvested every 3 days, then an antibacterial test was carried out. The data were analyzed by using analysis of variance (ANOVA) followed by Duncan's Multiple Range Test (DMRT) at a 5% significance level. The finding showed that probiotic drink of salak bali fruit juice effective to inhibiting the growth of Escherichia coli. Optimal antibacterial growth was seen on the 15th day of fermentation with an inhibition zone of 8.13 ± 0.40 mm. The presence of inhibition caused by the phytochemical content found in salak fruit, SCOBY contained in drinks, and the length of the fermentation process.
Nitrogen Absorption Rate in Kappaphycus alvarezii with a Longline System in the IMTA (Integrated MultiTrophic Aquaculture) Area at Ekas Bay Muhaemi Muktiniati; Muhammad Junaidi; Bagus Dwi Hari Setyono
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3562

Abstract

The rapid growth of the aquaculture sector can indirectly lead to the accumulation of unresolved aquaculture waste in the sea. The IMTA cultivation system is one of the innovations developed in aquaculture activities to overcome aquatic environmental problems, such as the accumulation of waste from feed used in aquaculture activities. The concept combines the cultivation of several species with different trophic levels, such as fish that are fed and combined with seaweed that can absorb inorganic materials in the water. The purpose of this study was to determine the level of nitrogen absorption in Kappaphycus alvarezii using a longline system in the IMTA area in the waters of Ekas Bay. This study used a Randomized Block Design (RAK) with 4 treatments and each treatment was divided into 4 groups (North, South, East, and West). The treatment given was planting seaweed at different depths, namely 50 cm, 100 cm, 150 cm, and 200 cm. The results showed that Kappaphycus alvarezii reared with an integrated cultivation system at different planting depths gave significantly different results in absolute weight growth with values ​​ranging from 120,31 grams – 195,58 grams and specific growth rates ranging from 2.67% - 4, 35%, but did not have a significant effect on the rate of nitrogen uptake in all treatments, but the highest absorption value was at a depth of 2 meters. So the researchers suggest the cultivation of Kappaphycus alvarezii at a depth of 2 meters in the waters of Ekas Bay, East Lombok with a longline system in the IMTA area.
Phytochemical test of 3 wild rambutan (Nephellium Lappaceum L. - Sapindaceae) fruits from Riau Province Sofiyanti, Nery; Fitmawati; Isda, Mayta Novaliza; Agesti, Asih Rahayu Ajeng; Sari, Maya; Pranata, Syafroni
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - 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.v22i3.3574

Abstract

Rambutan (Nepelium lappaceum) is one of tropical fruit plant that poses high morphological character, both cultivated or wild plants. The exploration of Nephellium in Riau Province had indicated 3 variations of wild Nephellium (Mone, Tunyiang dan Rambutan Hutan). The aim of this study was to examined the phytochemical contents of fruit from three wild Nephellium from Riau Province. Samples used in this study were three fruit parts (pericarp, aril and seed). Phytocemical tests were conducted qualitatively for alkaloid, terpenoid, steroid, flavonoid, saponin and tannin. The result showed that each fruit part had different phytochemical contents. Alkaloid was only found in aril of all wild Nephellium (Mone, Tunyiang dan Rambutan Hutan). Terpenoid and saponin were found in all fruit parts, while saponin was absent in all fruit parts from three wild Nephellium.  ditemukan pada semua bagian buah dari ketiga buah rambutan liar. The result of this study provides additional information of phytochemical content of wild N. lappaceum.

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