Jurnal Biologi UNAND
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Jenis-jenis Cacing Tanah (Oligochaeta) yang Terdapat di Kawasan Cagar Alam Lembah Anai Sumatera Barat
Get PDFA study on the earthworms (Oligochaeta) at Lembah Anai Nature Reserve, West Sumatera has been conducted from February to May, 2013. The purpose of this study was to identify earthworms species at the Nature Reserve. The earthworms were collected from different altitudinal levels ranged from 400 to 800 m above sea level using hand sorting method. There were three species of earthwoms found; Pontoscolex corethrurus (Glossoscolecidae), Pheretima posthuma and Megascolex kempi (Megascolecidae) these three species belong to sub order Neooligochaeta. All species were found at all altitudinal level.Keywords: Earthworm (Oligochaeta), Hand sorting, Lembah Ana
Isolasi dan Karakterisasi Bakteri pada Pasir Sarang dan Cangkang Telur Penyu Lekang (Lepidochelys olivaceae L.) yang Menetas dan Gagal Menetas
Get PDFIsolation and Characterization of Bacteria from nest sand and egg shell of Olive Ridley (Lepidochelys olivacea L.) which hatched and failed to hatch in Pariaman turtle conservation site, West Sumatra were conducted from December 2012 to September 2013 in Microbiology Laboratory, Andalas University and Laboratory of Provincial Health Department, West Sumatra. The aim of this study was to identify species of bacteria found at egg shells and nest sand of Olive Ridley in Pariaman. The result found 4 species of bacteria: Bacillus cereus and Klebsiella sp. from sand nest that hatched; while Bacillus cereus, Klebsiella sp. and Shigella sp. were identified from sand nest that failed to hatch. Bacteria isolates from egg shell that hatched were identified as Bacillus cereus, Klebsiella sp. While Bacillus cereus, Klebsiella sp., Salmonella sp. and Shigella sp. were identified from egg shell that failed to hatch. Keywords: isolation, bacteria, nest sand, egg shell, Olive Ridle
Komunitas Burung Berdasarkan Zonasi Ketinggian di Gunung Singgalang, Sumatera Barat
Get PDFStudy on bird community based on altitudinal zonation of Singgalang Mountain, West Sumatra was conducted in January 2014. This study aimed to describe community structure the bird from lower to higher elevation of the mountain. This study used point count method along a survey routes from 1300 to 2700 m asl, which is divided into three zones (Zone I: 1300 - 1800 m asl, Zone II: 1800 - 2200 m asl and Zone III: 2200 - 2700 m asl). This study recorded 216 individuals of 38 bird species to 21 families and 9 orders. The highest species diversity and richness was in Zone II. Zone III had low richness and low species diversity but the presence of bird is more evenly distributed. Most of the endemic bird species at Mount Singgalang was found at Zone I (1300 to 2300 m asl). Species richness decreases along increasing the altitudinal zonation of Singgalang Mountain.Key Words : Altitudinal zonation, community, bird, Singgalang Mountai
Kepadatan Populasi dan Distribusi Ukuran Kerang Contradens sp. di Perairan Tanjung Mutiara Danau Singkarak, Sumatera Barat
Get PDFThe study about population density and shell size distribution of clam Contradens sp. in Tanjung Mutiara Singkarak Lake, West Sumatra has been conducted on July 2013. This study used stratified purposive sampling method. Sampling site was decided into 3 locations based on human activities, 3 depth strata in each location; <5m, 5-10m and >10-15m. The clams were collected using “dauah†(traditional tool to catch shellfish), 3 sampling plots for each stratum. The result showed that the highest average population density (2.596 ind/m2) was found in location III followed location II (0.055 ind/m2) and location I (0.155 ind/m2). Based on strata, the highest average population density (1.941 ind/m2) was at >10-15m depth, there was no clam found at <5m depth. The largest clam concentrated  at >10-15m depth in location III (without human activity area) whereas small to medium clam concentrated at 5-10m depth.Keywords: clam, Contradens sp., population density, size distribution, Singkarak Lake
Kondisi Bakteriologis Air Sumur di Sekitar Tempat Pembuangan Akhir Air Dingin Kota Padang
Get PDFA research on bacteriological condition of ground well water at Air Dingin, Padang was conducted from January to March 2013 at the Health Laboratory Agency (UPTD Balai Laboratorium Kesehatan) of West Sumatra. The water samples were collected by using purposive method at three sampling points in distances of 250 m, 350 m and 450 m from garbage disposal locations. Bacteriological test was done using Most Probable Number method (MPN) with combination of 3:3:3. Escherichia coli was described using indole, methyl red, voges proskauer, citrate (IMViC test). The result showed that MPN of Escherichia coli of ground well water for each distance of 250 m, 350 m and 450 m ranges from 0 cell/100 ml to 2400 cell/100 ml. Based on bacteriological parameter test, quality of the ground well water around the landfill area was not appropriate to be consumed by people, except for ground well water was located at 450 m from landfill.Key words: ground well water, Escherichia coli, landfill, qualilty
Efek Ekstrak Etanol Rimpang Temu Mangga (Curcuma mangga Val.) Terhadap Sel β Pankreas Mencit Putih Yang Diinduksi Aloksan Secara Histologis
Get PDFThe effect of mango ginger (Curcuma mangga Val.) ethanolic extract has been experimentally tested to β cell of alloxan-induced mice at the Laboratory Animal Development and Structure. The experiment aimed to identify the effectifity of the ethanolic extract to defend β cell from necrosis caused by the alloxan. The activity of the extract was evaluated by using control (A0 and A1) and treatments. All mice were induced by alloxan (150 mg/kg of body weight). One week later the extract was given orally to the mice at dose 200 (A2) 400 (A3) and 800 (A4) mg/kg of body weight (A4). The extract was given everyday for 21 days. Pancreas were isolated for each week. The observation of pancreas histology showed that extract 200 mg/kg body weight could decrease necrosis at Langerhans higher than the extract of 400 and 800 mg/kg of body weight. This results indicate that giving mango ginger extract at dose 200 mg/kg body weight could decrease β cell necrosis.Key words : mango ginger (Curcuma mangga Val.), β cell, alloxan, necrosis
Karakteristik Sarang Bondol Peking Lonchura punctulata (Linnaeus,1758) di Kawasan Kampus Universitas Andalas
Get PDFA study on the nest characteristics of scaly-breasted munia (Lonchura punctulata) located around campus building and forest areas of Andalas University, Padang has been conducted from September 2013 to February 2014 using survey and nest sampling methods. Result of this study showed that the nest of scaly-breasted munia were located from four to six meter from the ground level. Those nest that located around the campus building were significantly higher than the forest area. Nest position in the tree of campus building area were more often found in primary branchs, whereas the nest of forest area were more often in secondary branchs. The nest of scaly-breasted munia were discover in 10 tree species. Shape and morphological size of the nest tended to be different betwen the two locations. Nest of scaly-breasted munia were made of natural materials and did not use find any synthetic material. Grass (Graminae) were the main material used for the nests.Keywords: nest, characteristics, materials, scaly-breasted munia
Uji Mulsa Organik Terhadap Gulma Dan Produksi Kacang Hijau (Phaseolus radiatus L.)
Get PDFWe experimentally studied the effect of organic mulches on weeds and yield of green beans (Phaseolus radiatus L.) have been conducted at green house and Laboratory of Plant Ecology, Departement of Biology, Faculty of Natural Sciences, Andalas University, Padang, from January to May 2014. The aims of this study were to determine the effect of different mulches (Mikania micrantha and Tithonia diversifolia) on weeds and yield of green beans. The experiment used nested design with eight treatments and three replications. The first factor (factor A) was two kinds of mulch (i.e Mikania micrantha and Tithonia diversifolia). While the second factor (factor B) was the given doses of mulch (i.e 0 g/polybag, 300 g/polybag, 600 g/polybag and 900 g/polybag). The results showed that Mikania micrantha mulch gave the stronger effect to reduce weed numbers. Mikania micrantha mulch on 900 g/polybag increased plant height and Mikania micrantha mulch on 300 g/polybag increased seed yield. Whereas Tithonia diversifolia mulch on 600 g/polybag increased plant height and the number of primary branches and Tithonia diversifolia mulch on 300 g/polybag increased seed yield
Jenis - Jenis Mamalia Di Koto Baru Nagari Paninggahan Kabupaten Solok Sumatera Barat
Get PDFAn inventory of mammalian species from Koto Baru Paninggahan Solok West Sumatera was conducted from August to October and continued from November to December 2015. The animals were identified through photographes from camera traps, personal encounters as well as indirect observations including foot prints and interviews to local inhabitants. This study has documented 15 species of mammals which belong to 11 families and 6 orders. From a total 511 identified photograps, it was known that pig-tailed macaque (Macaca nemestrina) was the most frequently photographed (212 images) and sambar deer (Rusa unicolor) was the least frequently photographed (3 images)
Intensitas Serangan Semut pada Tanaman Buah Naga (Hylocereus sp.) di Kota Pariaman, Sumatera Barat
Get PDFA study about the intensity attact of ant in dragon fruit (Hylocereus sp.) plantation was conducted on September 2015 in Pariaman City, West Sumatera. The ants were collected by using free collection method with purposive sampling techniques. About 10% of the dragon fruit plant in the study location was observed.The result showed that theintensity attack on dragon fruit was caused by fire ant Solenopsis geminata(25%)