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INDONESIA
Jurnal Biologi Universitas Andalas
Published by Universitas Andalas
ISSN : -     EISSN : 23032162     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 294 Documents
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Evaluating Species Distribution Models (SDMs) for Efficient and Accurate Detection of Wild Species Across Landscapes Taufiq, Ahmad; Nurainas
Jurnal Biologi Universitas Andalas Vol 13 No 01 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.13.01.36-42.2025

Abstract

Species distribution models (SDMs) have been used across continents and taxonomic groups to guide field surveys and improve detection efficiency. In several studies, SDM-guided approaches achieved Area Under the Curve values between 0.90 and 0.976, with some reports documenting the discovery of new populations (e.g., 4 of 8 species or 5-16 additional sites) and time savings of up to 70% compared with unsystematic surveys. One study noted that Gaussian Process models operated 70 times faster than an alternative estimation method. Additional work indicates that SDMs narrow survey areas and enhance cost effectiveness, particularly when environmental layers and robust occurrence data support model development. These studies show that, when applied with methods such as Maxent and ensemble approaches, SDMs offer a viable alternative to direct field surveys for locating wild species over large areas. Limitations arise when data quality or model specification is insufficient, suggesting that careful design remains essential for reliable outcomes.
Kidney Histology of Wistar Rats (Rattus norvegicus Berkenhout 1769) Due to White Coffee Agi, Yola Alunsa; Titrawani, Titrawani
Jurnal Biologi Universitas Andalas Vol 9 No 2 (2021)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.9.2.60-67.2021

Abstract

Coffee is a drink that is very popular with the people of Indonesia and in other countries. Coffee has many benefits but on the other hand, coffee can also damage health, the dangerous content in coffee is caffeine and cafeeic acid. The effect of coffee consumption is still a matter of controversy, one of which is the effect on the kidneys because the kidneys are the main excretory organ for removing metabolic waste from the body. The kidney is the second organ after the liver, which is most often the target of damage by chemicals. This study aims to determine the effect of multilevel doses of white coffee on the histological picture of rats' kidneys. This research is a completely randomized design study with four 4 treatments and four 4 replications. Consists of K (distilled water), P1 (0.36 ml), P2 (1.08 ml) and P3 (2.16 ml). The results of this study showed that macroscopic observations of the administration of white coffee civet coffee solution with different doses showed that the kidneys looked normal. It is characterized by the shape of the kidney like a pea and brownish-red in color. The P0 group was significantly different from the P1, P2, P3 groups. The P1 group was significantly different from the P0 group and the P2 group, P3. The P2 group was significantly different from the P0, P1, and P2 groups. The P3 group was significantly different from the P0, P1, and P2 groups. This study concluded that white coffee in multilevel doses affects the histopathology of kidneys in rats.
Antifungal Activity of Endophytic Bacteria isolated from Pegagan (Centella asiatica L.) for Inhibition the Growth of Malassezia furfur Yanthi, Vivi; Mahyarudin, Mahyarudin; Rialita, Ambar
Jurnal Biologi Universitas Andalas Vol 10 No 1 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.10.1.23-32.2022

Abstract

Pityriasis versicolor is a superficial fungal infection characterized by changes in skin pigment due to stratum corneum colonization by Malassezia furfur. The Increasing of antifungal resistance and high recurrence rate, requires alternative treatment of medicinal plants. Pegagan (Centella asiatica L.) is known to produce secondary metabolites that have antifungal activity produced by endophytic bacteria that live on pegagan plant tissue. The study aimed to determine the antifungal activity of pegagan endophytic bacteria isolates to Inhibit the Growth of Malassezia furfur. The endophytic bacteria isolates were re cultured on NA media with a streak plate method. Antifungal activity test used the disk diffusion method which is characterized by the formation of inhibitory zones. Total of 37 endophytic bacteria isolates were successed re cultured, and there were 15 endophytic bacterial isolates that have potentcy as antifungal agent with inhibitory zones ranged from 6.5 to 15.52 mm. The most potential isolate was similarity with genus Pseudomonas. The secondary metabolites contained of alkaloids, terpenoids and saponins. The potential Centella asiatica endophytic bacteria had antifungal activity and similarity with the genus Pseudomonas.
Potential Valuation Of Plants Based On Utilization Of Plants, Local Wisdom and Local Resident Attitude about Plant Conservation in Silokek National Geopark Putri, Dina Hayati; Maideliza, Tesri; Mahdi, Mahdi
Jurnal Biologi Universitas Andalas Vol 9 No 2 (2021)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.9.2.68-75.2021

Abstract

The objectives of this study was to evaluate the utilization of plants, local wisdom and tribe attitudes about plant conservation by the people in Silokek National Geopark. This research used survey method. These data were collected by using Pebble Distribution Method (PDM) and Quisioner. And then, data had been calculated by calculating the value of Local User’s Value Index (LUVI). The result indicated that local people utilizing plants is for herbal medicine 83%. Cyclea barbata is spesies with having the highest LUVI (0.137), followed by Artocarpus elasticus used for furniture (LUVI= 0.060), Styrax sumatrana (LUVI= 0.126) used for ritual, and Imperata cylindrica (LUVI= 0.073) used for livestock feed. And The result showed at least three local wisdom that possible to be integrated to plant conservation such as planting the plants, selectively harvest by select cutting and timing, and special treatment before used the plants like shalawat nabi reading. For tribe attitudes indicated people in Silokek National Geopark more 90% agree for conservation policy in that area.Keywords : Local User’s Value Index (LUVI), Pebble Distribution Method (PDM), Silokek National Geopark.
RAPD Primers Selection for Genetic Variation Analysis of Banana Plant (Musa spp.) Wiguna, I Ketut Catur; Pharmawati, Made
Jurnal Biologi Universitas Andalas Vol 9 No 2 (2021)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.9.2.47-53.2021

Abstract

Identification of genetic diversity using molecular markers is important for basic information for plant conservation. Banana is a fruit bearing plants that important for food sources in human life. This study aimed to determine the optimum conditions of  PCR-RAPD reaction and RAPD primers that suitable to amplify DNA fragmens. DNA isolation was done using modified of CTAB and chloroform isoamil alcohol. The samples used was young leaves of nine banana cultivar plants. Optimation was done using variety of DNA and MgCl2 concentration. Eight primers produced by Operon Primer Technology were tested. The DNA genomic concentration obtained was in the range of 23,3 ng/µl – 70 ng/µl. The optimum conditions of PCR-RAPD of banana plants that produce clear band were 50 ng/µl DNA template, 3 mM MgCl2 with the number of thermal cycles was 40 x. There were six RAPD primers that successfully amplified DNA : OPA 02, OPA 04, OPB 12, OPD 20, OPH 01, and OPH 03. The primer OPA-04 had the lowest resolving power value (4,4) , while  OPH 01 had the highest (11,3) resolving power.
Characterization And Screening Of Protease, Amylase, And Cellulase From Phylloplane Fungi Isolates Of Avicennia marina (Forssk.) Vierh. Mahardhika, Wahyu Aji; Ramadhany, Warih; Lunggani, Arina Tri
Jurnal Biologi Universitas Andalas Vol 9 No 2 (2021)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.9.2.54-59.2021

Abstract

Mangrove (Avicennia marina) is an important mangrove species, because it has many benefits for human life, including in the ecological scope as a source of food and medicine. These plants can also be used as a source of symbiont mold isolates which can be developed as an alternative to produce bioactive compounds, one of which is enzymes. Enzymes are protein compounds that can catalyze all chemical reactions in biological systems. This study aims to determine whether mangrove symbiont fungi (A. marina) can produce amylase, protease and cellulase enzymes. This research was conducted using a method based on enzyme activity, namely amylase activity with lugol iodine staining, protease activity and cellulase activity with congo red staining. on agar media enriched with 1% skim milk, 1% starch and 1% CMC. The results showed that 4 isolates were able to show potential enzymatic activity to be developed as agents for enzyme production.
In Vitro Callus Induction in Tacca (Tacca chantrieri Andre) Leaf Explants on Murashige and Skoog Media with Different Concentrations of Sucrose Isda, Mayta Novaliza; Salsabilla, Melda Jannatul
Jurnal Biologi Universitas Andalas Vol 10 No 1 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.10.1.1-9.2022

Abstract

Tacca chantrieri belongs to the family Taccaceae has black flowers and has a long filiform that looks like a bat. T. chantrieri contains phytochemicals in the form of spritosol saponins used as traditional medicine by the people of China and Thailand. The amount of land clearing, forest exploitation and habitat destruction resulted in a reduction in the number of T. chantrieri, so T. chantrieri was propagated to maintain its sustainability. One way that can be used is the in vitro culture technique, namely callus culture. Callus culture is an early stage of in vitro culture technique where this stage aims to produce and multiply callus cells. The purpose of the study is were to determine the effect of different sucrose concentrations on callus induction from T. chantrieri leaf explants and determine the best sucrose concentrations for callus culture from T. chantrieri leaf explants on Murashige and Skoog (MS) media. This study used a single factor completely randomized design (CRD), namely sucrose concentrations 0 g/l, 10 g/l, 20 g/l, 30 g/l, 40 g/l, 50 g/l with five replications. The results of this study showed that the administrations of sucrose with different concentrations on MS media had an effect on increasing callus induction in Tacca chantrieri leaves. The best sucrose concertations for callus induction of Tacca chantrieri leaves was the addition of 40 g/l sucrose at 20 days after planting, 60 % callus formation percentage, callus formed in the form of compact callus and produce yellow-white callus. Keywords: Tacca chantrieri, sucrose, callus, Murashige and Skoog.
Ants (Hymenoptera: Formicidae) at Biology Laboratory of Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang Anggraini, Indah; Nugraha, Fitra Arya Dwi; Razak, Abdul; Satria, Rijal
Jurnal Biologi Universitas Andalas Vol 10 No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.10.2.47-52.2022

Abstract

The ants are one of the insects that dominate all ecosystems, it biomass reaching more than 30% in tropical ecosystems. The ants plays positive or negative roles in ecosystem. The negative role of ants is as a household pests that can have a negative impact on humans. The loss caused by pest ants is causing contamination of food as well as contamination of sterile equipment in hospitals and laboratories. The ant stinging will cause allergies and also become disease vectors due they association with several pathogenic microorganisms. This study was conducted at the Biology Laboratory, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Air Tawar, West Sumatra, from October to November 2021. The ants were collected inside and outside of the laboratory by using the baited trap (peanut butter, honey, and sardines) and hand collection methods. A total of 419 individual ants were found belonging to eight species and three subfamilies. The highest number of individual found in Tapinoma melanocephalum.
Ethnobotanical Study of Ferns as Traditional Medicine in Central Siberut, Mentawai Island Syafni, Nova; Bakhtiar, Amri
Jurnal Biologi Universitas Andalas Vol 10 No 1 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.10.1.10-14.2022

Abstract

West Sumatra Province has two ethnicities, namely Minangkabau and Mentawai. Both ethnicities have the capability to apply plants in folk medicine. This ethnobotanical study was conducted in Saibi Simokop village in three hamlets namely Sirisurak, Simoilaklak, and Saibi. The study was focused on the use of ferns in traditional medicine. Data collection was carried out using the snowball sampling method to seek the traditional healers (sikerei). The results showed that seven species of ferns were used for treatment of fever, inflammation, and poisoning. The ferns were included Cephalomanes javanicum (Blume) Bosch, Angiopteris evecta (G. Forst.) Hoffm., Dicranopteris linearis (Burm. F.) Underw., Diplazium esculentum (Retz.) Sw., Phymatosorus membranifolium (R. Br.) S.G. Lu, Lecanopteris sp., and Asplenium nidus L. The application of ferns in concoctions was administered topically and some were combined with oral administration.
Callus Regeneration of Gynura procumbens (Lour.) Merr. In Vitro syahid, Sitti Fatimah; Seti, Lusia
Jurnal Biologi Universitas Andalas Vol 10 No 1 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.10.1.15-22.2022

Abstract

Gynura procumbens (Lour.) Merr. is one of the species of Asteraceae which is potential as medicinal. Propagation of the species could be conducted by vegetative, so the plant genetic variability is narrow. Genetic variability could be increased by somaclonal variation through callus culture. There is no report on in vitro regeneration from callus culture, although this method could assist further genetic improvement of plants. In this experiment, different concentrations of 2,4- D (0.1 ; 0.3 ; 0.5 mg L -1 ) singly or combination with BA (0.1 ; 0.3 and 0.5 mg L -1 ) were evaluated for callus induction and several concentrations of BA (0 ; 0.1; 0.5 and 1.0 mg -1 ) combination with kinetin (0.1 and 0.3 mg-1) were observed for ability of callus formed shoots. The results showed that the best media for callus induction was 0.5 mg L -1 2,4-D + 0.5 mg L -1 BA. This treatment produced friable callus structure, no roots and yellowish white. Callus regeneration was obtained on the combination of 0.1 mg L -1 BA. + 0.1 mg L -1 kinetin and 0.1 mg L -1 BA + 0.5 mg L -1 kinetin but the percentage was still low. Keywords: G procumbens {Lour.} Merr, induction, regeneration, calli, in vitro

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