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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 10 Documents
 1 
Search results for , issue "Vol 2, No 3 (2013)" : 10 Documents clear
Penetasan Telur Penyu Lekang (Lepidochelys olivacea Eschscholtz,1829) pada Lokasi Berbeda di Kawasan Konservasi Penyu Kota Pariaman Nurhidayata Bin Syaiful; Jabang Nurdin; Indra Junaidi Zakaria
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

Research about eggs hatching of olive ridley turtles (Lepidochelys olivacea Eschscholtz,1829) in the turtle conservation area of Pariaman City was conducted from October to January 2013. This research aims to determine a suitable location in eggs hatching of olive ridley turtles in the Turtle Conservation Area of Pariaman city. The research used experiment method with treatment A (beachsand near the shore) and B (beachsand near the sea), three repetitions in each location and 20 eggs per repeat. Results showed that the best location for hatching is beachsand near the shore with 80 % rate of hatching. The rate of hatching in beachsand near the sea is 37%. Environmental factors that influent rate of hatching are topography, temperature dan salinity.
Uji Aktivitas Antibakteri Ekstrak Kental Tanaman Pisang Kepok Kuning (Musa paradisiaca Linn.) terhadap Staphylococcus aureus dan Escherichia coli Ayu Putri Ningsih; - Nurmiati; Anthoni Agustien
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

Antibacterial activity of crude extracts of pisang kepok kuning plants (Musa paradisiaca Linn.) were tested against Staphylococcus aureus and Escherichia coli. Roots, corms, pseudoterms, flowers, and ripe fruits of pisang kepok kuning cultivar were macerated with ethanol 96% and evaporated in a rotary evaporator at 50C. All of crude extracts were screened for its antibacterial activity by using Agar Well Diffusion Method with concentration based on 200 grams of fresh weight. This research used Completed Randomized Design (CRD) with nested pattern, four replications, and consist of two factors. First factor was bacteria and the second factor was crude extracts of pisang kepok kuning such as roots, corms, pseudoterms, flowers, and ripe fruits. The results showed that all of crude extracts have significant antibacterial activity against S. aureus and E. coli. Crude extract of the corm has highest antibacterial activity against S. aureus with diameter of inhibition area was 20,391 mm with inhibition zone type isirradical and diameter inhibition area 18,962 mm for E. coli that has radical zone.Keywords : Musa paradisiaca Linn., S. aureus, E. coli, antibacterial
Struktur Anatomi Kayu Beberapa Jenis Buah-Buahan Yulia Sandri; Tesri Maideliza; - Syamsuardi
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

The aim of this study was to describe the anatomical structure and quality of wood from fruit plants. This study was conducted from December 2012 to February 2013. The woods of five fruits species in Padang namely Artocarpus integra (cempedak), Baccaurea motleyana (rambai), Mangifera caesia (binjai), Mangifera foetida (ambacang), and Mangifera odorata (kuweni) were analyzed. The character of vessels, parenchyma, and rays were analyzed by using permanent slide, and fibre dimension by maceration method. The results showed that all of woods in this study have the same type of porous namely difuse and soliter type. The smallest porous was detected at wood of B. motleyana among those species. The parenchyma and rays characters of A. integra and B. motleyana have apotracheal and uniseriate types while M. caesia, M. foetida, and M. odorata have paratracheal and multiseriate types. Wood of B. motleyana has the longest fibre, differed from woods of M. caesia and M. odorata with short fibres. Based on industrial woods that A. integra and B. motleyana were classified in II-III of strength, differed from woods of M. caesia, M. foetida and M. odorata were classified in III-IV of strength.Keywords : anatomical structure, permanent slide, fruits wood, wood quality.
Deskripsi Gejala dan Tingkat Serangan Penyakit Busuk Hitam Pada Batang Tanaman Buah Naga Merah (Hylocereus polyrhizus, L.) di Padang Pariaman, Sumatera Barat Resti Helvetia; Nasril Nasir; - Jumjunidang
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

Red dragon fruit Hylocereus polyrhizus is the fruit with a high value in industry. However, since the past two years, the fruit is being attacked by some pathogens and cause severe disease in West Sumatra. One of the diseases is black rot disease. The purpose of the research was to characterize the symptoms and disease severity of the black disease stem rot on red dragon fruit. The research was conducted from December 2012 until February 2013 and was taken place at Solok Tropical Fruit Research Institute and Microbiology laboratory of Biology Department Faculty of Mathematic and Natural Science, Andalas University, Padang, West Sumatera. This study was using direct observation method and the data were analyzed descriptively. The result showed that the percentage of the black disease of stem rot of dragon fruit was 47.3 % while disease severity index of it was 1.22. The isolated pathogen on the black disease stem rot of dragon fruit were Fusarium sp. and Xanthomonas sp.Keywords: Dragon fruit, black rot disease, disease severity
Induksi Perakaran Tunas Tetrastigma rafflesiae Miq. Pada Media Murashige-Skoog Dengan Penambahan Beberapa Konsentrasi Indole-3-Butyric Acid (IBA) secara In Vitro Erni Febriyanti; - Suwirmen; M. Idris
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

An experiment on in vitro root induction of Tetrastigma rafflesiae Miq. on Murashige-Skoog (MS) medium supplemented with several concentrations of Indole-3-Butyric Acid (IBA) had been done from February to April 2013. The aims of this experiment was to determine physiological responses of T. rafflesiae’s shoot to the IBA on half strength media of MS for root induction stages. The experiment used a completely randomized design in seven treatments and four replications. The treatment was the addition of IBA in several concentration (i.e. 0.0; 0.5; 1.0; 1.5; 2.0; 2.5 and 3.0 mg/l). The results showed 0.5 mg/l supplemented IBA was more effective and efficient in root induction of shoot then other concentrations. It influenced the average number of roots (12.5 root/plantlet), the average length of root (4.98 cm) and the morphological of plantlets. The result indicated that plantlet of T. rafflesiae generated in in vitro had a higher possibility of artificial culture and prospective for future conservation of Rafflesia.Keywords : Tetrastigma rafflesiae Miq., root induction, Indole-3-Butyric-acid.
Deskripsi Gejala dan Tingkat Serangan Penyakit Busuk Kuning Pada Batang Tanaman Buah Naga Merah (Hylocereus polyrhizus, L.) di Padang Pariaman, Sumatera Barat Dina Barthana; Nasril Nasir; - Jumjunidang
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

The study about on the description of symptoms and disease severity of yellow disease stem rot of red dragon fruit (Hylocereus polyrhizus, L) in Padang Pariaman, West Sumatera has been was studied from December 2012 to February 2013. The study was conducted at the Laboratory of plant diseases and the screen house of Indonesian Tropical Fruit Research Institute Solok and Microbiology laboratory of Biology Department of Mathematic and Natural Science, Andalas University, Padang. The purpose of the study was to characterize and identify the symptoms of the yellow disease stem rot on dragon fruit. This study was used direct observation method and the data were analyzed descriptively. The result showed that percentage of yellow disease stem rot of dragon fruit in Padang Pariaman was 99,5% while disease severity index was 2,59 (moderate severity). The microbes found at the time of isolation were Fusarium sp., Pestalotiopsis sp., Colletotrichum gloeosporioides, Sclerotium sp., fungi (sp.1) and bacteria (sp. 1). The microbes that caused yellow disease stem rot of red dragon fruit which was investigated by using postulate Koch test was Fusarium sp.Key words: Symptoms, disease severity, yellow disease stem rot, identification
Studi Jenis-Jenis Zingiberaceae di Kawasan Hutan Lindung Gunung Talang Sumatera Barat Aulia Muhradi Delta; Ardinis Arbain; - Syamsuardi
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

Floristic study on Zingiberaceae at Protected Forest areas in Talang Mount, West Sumatra has been carried out from July 2012 to April 2013. Samples of Zingiberaceae were directly collected during tracking and searching along three exploration routes to top of mount Talang i.e. the Batu-Banjanjang, Aie Batumbuk and Koto Gadang Guguk. The samples were processed to herbariums specimen and identified at Herbarium Universitas Andalas (ANDA) Padang. Based on analysis of morphological characters, nine species of Zigiberaceae were identified; Etlingera elatior, Etlingera sp., Etlingera foetens, Geostachys sp., Globba aurantiaca, Globba talangensis, Hedychium coronarium, Hornstedtia Pininga and Zingiber zerumbet. We suggested further research for Etlingera sp. and Geostachys sp. on its possibility as new species.
Analisis Histologis Ginjal Ikan Asang (Osteochilus hasseltii ) di Danau Maninjau dan Singkarak, Sumatera Barat Sayati Mandia; Netti Marusin; Putra Santoso
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

A study on kidney histology of Silver Sharkminnow (Osteochilus hassletii) sampled from Maninjau and Singkarak Lakes, West Sumatra has been done from December 2012 to April 2013 at Animal Structure and Development Laboratory, Department of Biology, Andalas University, Padang. Direct observation and purposive sampling were conducted at four locations around Singkarak Lake (Sumani, Paninggahan, Sumpur, Ombilin) and one location in Maninjau Lake (Tanjung Sani). Histological samples of kidneys were isolated, fixated, dehydrated and embedded on paraffin and stained using Haematoxylin-Eosin. The results showed some histological alterations of kidney samples from all locations. Those alteration varied from cell hypertrophy, lysis, necrosis and emerging of scrape tissues. There were no significant differences on the degree of alteration among all populations. Those result indicated that both lakes had been experienced organic pollutions.Keywords: Silver Sharkminnow (Osteochilus hasseltii C.V), Histopatology, Kidney, Singkarak Lake, Maninjau Lake.
Jenis-Jenis Ektoparasit pada Mamalia Kecil yang ditemukan di Pasar Raya Padang, Sumatera Barat Beni Arengga; - Dahelmi; Siti Salmah
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

A study about ectoparasites on the small mammals at Pasar Raya Padang, West Sumatera was conducted from November 2012 to January 2013. The purpose of this study was to know the species variety of ectoparasites on the small mammals. Present study used purpossive sampling method. The results showed that, two classes (Arachnida and Insecta), two orders (Acarina and Siphonaptera), three families (Sarcoptidae, Laelapidae and Pulicidae), and four species of ectoparasites (Echinolaelaps echidninus, Laelaps nuttalli, Sarcoptes scabiei and Xenopsylla cheopis) were found on two small mammal species (Rattus tanezumi and Suncus murinus). The highest number of individuals of ectoparasites was Echinolaelaps echidninus (46 individuals) and the lowest one was Sarcoptes scabiei (9 individuals).
Potensi dan Karakterisasi Bakteri Alami Pencernaan Ayam Broiler Pedaging (Gallus gallus domesticus L.) Sebagai Kandidat Probiotik Pakan Ayam Broiler Adelia Febriyossa; - Nurmiati; - Periadnadi
Jurnal Biologi Universitas Andalas Vol 2, No 3 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.3.%p.2013

Abstract

A study about potential and characterization of native bacteria of intestinebroiler (Gallus gallus domesticus L.) as probiotic candidate of a broiler poultry product were conducted from December 2012 to March 2013 at Microbiology Laboratory, Department of Biology, Andalas University, Padang. This study aimed to obtainbacterial isolates and to describe morphological characters of each isolate of native bacteria as probiotic candidate for thebroiler.This study used an experimental method and analyzed descriptively. The results showed that rough material of intestine consisted of fermentative bacteria (57x107cfu/g), amylolitic (118x107cfu/g), cellulolytic (63x107cfu/g) and proteolytic bacteria (52x107cfu/g). Two isolates were potensial probioticcandidates; amylolytic bacteria and cellulolytic bacteria. The characteristics both probiotic candidates were gram negative, non-sporulating, positive catalase and motile.Keywords: Gallus gallus domesticus, intestine bacteria, characterization

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