Jurnal Biologi UNAND
Not a member yet
273 research outputs found
Sort by
Laju Respirasi Kecoak Jerman (Blattella germanica, Dictyoptera; Blattellidae) yang Resisten Terhadap Insektisida
Get PDFAn experiment on respiration rate of German cockroach (Blattella germanica, Dictyoptera; Blattellidae) that had been resistant to pyrethroid insecticide was done from December 2012 to Mei 2013. This experiment used completely randomized design with two treatments (with insecticide and without insecticide exposured) and three replications. The respiration rate were measured using the Scholander Respirometer. The control subject were VCRU-WHO as a susceptible strain standarized by WHO, while the resistance strains were GFA-JKT, KRSA-BDG, PLZ-SMRD and PLZ-PDG consisted of female, male and nymph Individuals. The results shown that respiration rates were not significant difference between susceptible and resistance strains on females (F: 0.373, df: 4, P: 0.823), males (F: 0.562, df: 4, P: 0.696) and nymphs (F: 0.402, df: 4, P: 0.803). The respiration rate were also not significant difference between with insecticide and without insecticide exposured, except within GFA-JKT females (F: 9.161, df: 4, P: 0.039), VCRU-WHO males (F: 11.779, df: 4, P: 0.026) and GFA-JKT nymphs (F: 8.733, df: 4, P: 0.042). Those results support that resistant cockroach do not increase respiration rate in responding insecticide exposured.
Keywords: German cockroach, respiration rate, strains, insecticide exposure
Pengaruh Lama Pelapukan Media Limbah Industri Teh Terhadap Pertumbuhan Miselium Produksi Jamur Kuping Hitam (Auricularia polytrica (Mont.) Sacc.)
Get PDFThe study about effect of media composting duration from industrial waste of tea production to the mycelium growth and production of black ear mushroom (Auricularia polytrica (Mont.) Sacc.) was conducted from December 2012 to February 2013 in the Laboratory of Microbiology, Department of Biology, Andalas University, Padang. This study aimed to determine the effects of media composting duration to the mycelium growth and production of black ear mushrooms. The research was designed by using completely randomized design (CRD) in five treatments of Composting duration, they were 0, 1, 3, 5 and 7 days in 5 replications. The result showed that the treatment of 5 days media composting was the optimum length of time for 32 days the growth of mycellium, the weight of fruiting bodies was 50.89 g, the widest diameter of the cap of fruiting body was 9.05 cm, the cellulase activity of the mycellium in the baglogs was 4,769 units/g and producing the highest content of glucose after composting was 153.526 µg/g.
Keywords: composting duration, waste of tea, Auricularia polytrica, mycelium growth
Studi Etnobotani pada Tradisi Balimau di Kota Pariaman, Sumatera Barat
Get PDFEthnobotany studies of Balimau tradition in Pariaman has been conducted from July to October 2012. The purpose of this study was to determine the plant species and their significance used for the Balimau tradition in Pariaman. This study was conducted using survey methods, interview, and direct plant sample collections in the field. The samples were identified at Herbarium Universitas Andalas (ANDA). The cultural significance used of plant for Balimau tradition was determined using Index of Cultural Significance (ICS). The result showed that 13 species belonging to 10 families were identified as plant species that used in Balimau tradition, namely: Cananga odorata (Annonaceae), Michelia alba (Magnoliaceae), Michelia champaca (Magnoliaceae), Jasminum sambac (Oleaceae), Pandanus amaryllifolius (Pandanaceae), Vetiveria zizanioides (Poaceae), Rosa hybrida (Rosaceae), Ixora javanica (Rubiaceae), Citrus aurantifolia (Rutaceae), Citrus hystrix (Rutaceae), Murraya paniculata (Rutaceae), Mimusops elengi (Sapotaceae), and Alpinia sp. (Zingiberaceae). Citrus aurantifolia has the highest ICS value indicated that the species was commonly used in the ritual of Balimau.
Keywords : Ethnobotany, Balimau, Index of Cultural Significance (ICS
Komposisi dan Struktur Komunitas Karang (Scleractinia) di Ekosistem Terumbu Karang di Perairan Pantai Nirwana Padang
Get PDFA study on the composition and community structure of Scleractinia in coral reef ecosystem at coastal region Taman Nirwana Padang have been done from April - July 2013. This study was to know the competition and community structure of Scleractinia at coastal region Taman Nirwana Padang. The research was conducted by "Line Intercept Transect" and "Purposive Sampling" in two zones: Tourism zone and Mangrove zone and depth are 2-7 meters. Each zones have eight transects and each transect length of 25 meters. There are 50 coral species belong to 12 family at Nirwana beach. The highest relative density of coral species are A. palifera (RD 6.56%), Galaxea fasicularis (RD 5, 96%), Pocillopora damicornis (RD 5.79%), Goniopora pandoraensis (RD 5.27%), Goniastrea pectinata (RD 4.92%), P. lobata (RD 4.58%). Diversity index of coral species at coastal region Taman Nirwana is high (3.566). Diversity index of each zone are Tourism zone (3.533) and Mangrove zone (3.502). The equitabilities index are 0,907 (Tourism zone) and 0.909 (Mangrove zone). The composition of coral species at two zone at coastal region Taman Nirwana were in stable condition, and a similarity index is 95.8%.
Keywords: Coral, composition, Community, Nirwana Beac
Peningkatan Kandungan Alkaloid Kalus Mahkota Dewa (Phaleria macrocarpa [Scheff.]Boerl.) Dengan Pemberian Prekursor Triptofan pada Medium Murashige & skoog
Get PDFAn experiment aimed to increase alkaloid content of Phaleria macrocarpa callus using tryptophan as a precursor in Murashige & Skoog media was done from September 2013 to January 2014 at the Laboratory of Plant Physiology, Faculty of Sciences, Andalas University. This experiment used Completely Randomized Design (CRD) with 6 treatments and 4 replications. The treatments were 6 consentrations of tryptophan i.e.0 mg/L (control), 100 mg/L, 125 mg/L, 150 mg/L, 175 mg/L, 200 mg/L. The results showed that tryptophan 200 mg/L gave the best concentration in producing the highest alkaloid content of Phaleria macrocarpa callus
Mamalia Kecil Terestrial di Gunung Kerinci dan Gunung Tujuh dalam Kawasan Taman Nasional Kerinci Selat (TNKS)
Get PDFAn inventory of terrestrial small mammal was conducted in January and August 2013 in the Mt. Kerinci and Mt. Tujuh. The mammals were captured using snap and pitfall traps with a total effort of 650 trap nights. This study found 10 species of small mammals that belong to 4 families and 3 orders. Some species were found in both Mt. Kerinci and Mt. Tujuh. Similarity index of Sorensen between the two locations was 42%. Those species inhabited in the two locations were Hylomys suillus, Lariscus insignis and Niviventer rapit.
Key words: Mt. Kerinci, Mt. Tujuh, small mammal, terrestrial
Pengaruh Faktor Abiotik terhadap Produksi Protease dari Isolat Bakteri M1-23
Get PDFA study on the influence of abiotic factors in producing protease by bacterial isolates M1-23 was conducted from May 2013 to December 2013 in the  Laboratory of Microbiology, Department of Biology, Andalas University, Padang. This study aimed to find optimal conditions by isolate M1-23 to produce protease. This study consists of two stages. First stage used to produce the best protease and the second used to increase enzim homogenity. The result showed that the highest enzyme activity was  at medium temperature 550 C and pH 7.5. The best homogenity was produced at 125 rpm of agitation process
Jenis-Jenis dan Prevalensi Ektoparasit Pada Anjing Peliharaan
Get PDFDogs are the most popular pet animal although they could carry ectoparasites which can cause diseases in human. The purposes of this study were to identify ectoparasites and to determine their prevalence on pet dogs. This study was conducted from March to July 2013 using survey method and collecting ectoparasites directly from 15 pet dogs in Padang. Specimen processing and species identification were done at the Animal Taxonomy Laboratory, Biology Department, Andalas University. This study found 5 species of ectoparasites in pet dogs. There were Ctenocephalides canis Curtis, 1826, Dermacentor sp., Haemaphysalis sp., Rhipicephalus sanguineus Latreille, 1806 and one unidentified species sp. 1 from family Laelapidae. Rhipicephalus sanguineus has the highest prevalence (73,3 %) followed by Haemaphysalis sp. (46,7%), Dermacentor sp.(20%), Ctenocephalides canis (13,3%) and sp. 1 from Family Laelapidae (6,7%).Keywords : ectoparasite species, prevalence, pet dog
Komunitas Algae Epilitik Sebagai Indikator Biologis Di Sungai Batang Ombilin, Sumatera Barat
Get PDFA study about community of epilithic algae was conducted on April until August 2014. The objective of this study was to clarify composition and structure of epilithic algae in Ombilin River and water quality of Ombilin River based on community of epilithic algae. Samples were collected by survey and brushing method and the research station was choosed 6 stations purposively. The results showed that totally 72 genera had been found with total density of epilithic algae was 388.92ind/cm2to 2139.04 ind/cm2. The highest density of epilithic algae was found in station III (Talawi) and the lowest in station II (Lubuk Pinang). The dominant epilithic algae were Cocconeis, Synedra, Navicula, Denticula and Gomphonema (Baccilariophyta), Stigeoclonium (Chlorophyta), Phormidium and Calothrix (Cyanophyta), Ceratium (Dinophyta) and Audouinella (Rhodophyta). Diversity index was 1.50 to 2.48, where the highest was observed at station II (Lubuk Pinang) and the lowest one at station III (Talawi). Equitability index was 0.42 to 0.68. Similarity index was 50 to 74.70%. Saphrobic coefficient was 0.61–1. The result also showed that Ombilin Riverwere polluted slightly byorganic and inorganic materials in β-mesosaprobic phase
Pemberian Beberapa Jenis Dan Konsentrasi Auksin Untuk Menginduksi Perakaran Pada Stek Pucuk Bayur (Pterospermum javanicum Jungh.) Dalam Upaya Perbanyakan Tanaman Revegetasi
Get PDFThe research on effect of types and concentration of auxin on root induction of apical shoots Bayur (Pterospermum javanicum jungh.) in attempt to propagate of revegetation plants was conducted from May to August 2015 in the Nursery and Greening of Andalas University, and Laboratory of Plant Physiology Department of Biology, Faculty of Mathematics and Natural Sciences, Andalas University. The aimed to know the response of apical shoots Bayur (P. javanicum) on root induction by providing some type and concentration of Auxin. This research used method of Complete Randomized Design (CRD) with seven treatments and three replications. The treatments consist of control, IBA 100 ppm, IBA 200 ppm, NAA 100 ppm, NAA 200 ppm, IAA 100 ppm, IAA 200 ppm. The result of this study showed that there was no respons of any treatments in inducing root of apical shoots of Bayur (P. javanicum).Keywords: Auxin, Pterospermum javanicum, revegetation, root inductio