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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 7 Documents
 1 
Search results for , issue "Vol 7, No 2 (2019)" : 7 Documents clear
The Perifiton Alga Community in Masang Kecil River Receives Liquid Palm Oil Mill Waste in Kinali District, West Pasaman Regency Vivi Safitri; Izmiarti Izmiarti; Jabang Nurdin
Jurnal Biologi Universitas Andalas Vol 7, No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.7.2.100-108.2019

Abstract

The study of the periphyton algae community in Masang Kecil River that received palm oil mill effluent in Kinali District, West Pasaman Regency was held from November 2017 to September 2018. This study aims to determine the composition and structure of periphyton communities in the Masang Kecil River in Kinali, West Pasaman. This study used purposive sampling method with a sampling location of 4 stations. Based on this study, 88 species of periphyton were classified as 3 classes i.e Bacillariophyceae (64 species), Chlorophyceae (15 species) and Cyanophyceae (9 species). The average density is 8.967 ind/ cm2.  The highest relative density (KR) at stations 1,2 and 3 is Navicula lanceolata and station 4 is Fragilaria capucina. Species that are always found at each station (FK= 100%) are Fragilaria capucina, Navicula lanceolata and Synedra ulna. The diversity index in the Masang Kecil River is classified as medium (H’ = 2.87). Equitability index is evenly distributed (E= 0.64). Dominance index (C= 0.12) there is no dominant  species. The similarity index is almost the same except between stations 1 and 3.
Callus Induction of Aerides odorata Lour. by Adding 2,4 Dichlorophenoxyacetic Acid (2,4-D) Azharia Khalida; Suwirmen Suwirmen; Zozy Aneloi Noli
Jurnal Biologi Universitas Andalas Vol 7, No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.7.2.109-117.2019

Abstract

The research about callus induction of Aerides odorata L. by adding 2,4 Dichlorophenoxyacetic Acid (2,4-D), has been done from August to October 2018 in Plant Physiology and Tissue Culture Laboratory, Department of Biology, Faculty of Mathematics and Natural Science, Andalas University, Padang. The aim of this research was found the effective consentration of 2,4-D to induce somatic embryo of A.odorata. The research used Completely Randomized Design (CRD) with 5 treatments and 6 replications. The treatments were: 0 mg/L 2,4-D; 0,25 mg/L 2,4-D; 0,5 mg/L 2,4-D; 0,75 mg/L 2,4-D; 1 mg/L 2,4-D. The result showed that the treatmeant were able induction callus of A.odorata, with compact until the friable texture, color of the resulting callus is yellowish green and greenish yellow. 2,4-D 1 mg/L was the best concentration to increase fresh weight of callus.
In Vitro Response of Protocorm Grammatophyllum stapeliiflorum (Teijsm. & Binn.) J.J.Sm. Orchid in Growth on Several Media Composition Ranny Wirmasari; Mayta Novaliza Isda
Jurnal Biologi Universitas Andalas Vol 7, No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.7.2.118-125.2019

Abstract

Family Orchidaceae has about 800 genera which are already difficult to find and almost extinct, including the orchid genus Grammatophyllum. A species of rare orchids, Grammatophyllum stapeliiflorum, is hard to find in original habitat. The addition of Growmore, BAP and 15% coconut water is expected to increase the growth and development of the G. stapeliiflorum orchid protocorms. This study use a Completely Randomized Design, consisting of 6 treatments (control, 1 and 3 mg/l BAP, 1 and 3 g/l Growmore, and 150 ml/l coconut water) in MS media with 5 replicates with observation for 4 weeks after planting. The results showed did not differ markedly in the number of protocorms, number of shoots and number of browning protocorms, but differ markedly in the parameter protocorm color based on DMRT test. Treatment of 3 mg/l BAP gives the best results on the number of shoots 2,60 protocorms and number of browning protocormss at the least amount 0,80 protocorms. The number of protocorms most widely on the treatment of 1 g/l Growmore 14,40 protocorms. Protocorms color is best found in 3 g/l Growmore with green color. This research managed to multiply the number of protocorms and induces protocorms shoots from Grammatophyllum stapeliiflorum orchid.
Species Diversity of Earthworm in the Field of Biology Gadjah Mada University Sita Ratnawati; Niken Satuti Nur Handayani; Trijoko Trijoko
Jurnal Biologi Universitas Andalas Vol 7, No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.7.2.126-135.2019

Abstract

The Earthworms are one of the invertebrate species which hasn’t backbone. The Earthworm has lived in a few habitats, for example in the humid of forest ground with the high density of cover canopy. Field of Biology UGM is an artificial forest and has a high density of cover canopy  and this condition can supported the living habitat of earthworms. The aim of this research were investigated species diversity of earthworm in the field of Biology UGM.. Sampling method was carried out with purposive random sampling method. Result obtained that the earthworms in the field Biology of UGM consist of three species. The Three species were Pheretima hawayana, Pheretima sp., and Eudrilus eugeniae. Data analysis was used UPGMA method by 3.1 MVSP Program and obtained that generally, similarity percentage of P. hawayana, Pheretima sp., dan E. eugeniae interspecies more than 55 %. Whereas similarity percentage of P. hawayana and  Pheretima sp. more than 85 %.
Effects of Chlorella sp. Additions on the Changes of Visceral Mass and Proximate Contents of Shellfish Clara Dhisa Sumunaring Ratna; Trijoko Trijoko
Jurnal Biologi Universitas Andalas Vol 7, No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.7.2.79-90.2019

Abstract

Shellfish, called as kerang in Indonesia, contains animal protein that’s popular, making it as and important fisheries and marine commodity. Supported by the good taste and high nutrient content in it. Paphia undulata or Kerang  Batik, Peryglipta reticulata or Kerang Kemiri, Meretrix meretrix or Kerang Tahu, and Codakia tigerina or Kerang Madu, are consumption shells from northern coast of Java. To improve the quality of shellfish, Chlorella added as shellfish food preferences. It supported by the high nutrient content in Chlorella sp. Shellfish kept for 15 days in a basket with a sand substrate and drainage from sea. Therefore, the water quality had been controlled for the changed of salinity and water temperature. Parameters used to see the improvement shellfish quality is the color changes on visceral mass and the changes of proximate content (moisture, protein, fat, carbohydrate and ash). This study proves the color changes on visceral mass and proximate content. The color change occurs on the visceral mass and the gills. The changes of viscerall mass occurs on kerang batik from white greyish to yellow while the more clearly gills occurs on kerang madu and kemiri. Meanwhile, the change of proximate shown by the increasing of protein and moisture on all the spesies while on the otherside the decreasing of carbohydrate and ash, but the increasing of fat only occurs on kerang batik and kerang madu. The higher proximate changes occur on kerang madu, where the ammount of moisture at 71,43 ± 0,03 %, the protein at 16,55 ± 0,02 %, the fat at 1,35 ± 0,04 %, the carbohydrate at 2,9 ± 0,03 %, and the ash at 8,09 ± 0,04 %. The conclusion of this research are kerang madu has the higher positive influences by addition of Chlorella, shown by the increasing of proximate contents and the clearly of gills. Keywords : addision of Chlorella sp., changes of visceral mass, proximate, shellfish
The Growth of Shoot Cutting of Ant-nest Plant (Myrmecodia pendens Merr. & L.M. Perry) that Planted in Various Planting Medium Suci Rahmadani Putri; Suwirmen Suwirmen; Zozy Aneloi Noli
Jurnal Biologi Universitas Andalas Vol 7, No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.7.2.91-99.2019

Abstract

The research about The Growth of Shoot Cutting of Ant-nest Plant (Myrmecodia pendens Merr. & L.M. Perry) that Planted in various planting medium was held from May until August 2018 in Greenhouse and Plant Physiology Laboratory, Department of Biology, Faculty of Mathematics and Natural Science, Andalas University, Padang. The aim of this research was to find out the effects of various planting medium to the growth of shoot cutting Ant-nest Plant. This research used Completely Randomized Design (CRD) with five treatments (sand, husk charcoal, media moss, coconut fiber and fern’s root) and six replications. The results showed that shoot cutting that planted in sand, husk charcoal and fern had a highest life percentage (100%). Shoot cutting that planted in coconut fiber showed a highest height accretion. Shoot cutting that planted in media moss showed the highest root amount, longest root length and containing clorophyl level.
Spatial Spread of Invasive Foreign Plants Clidemia hirta (L.) D. Don in Bung Hatta Forest Park, Padang, West Sumatra Rian Anggraini; Solfiyeni Solfiyeni
Jurnal Biologi Universitas Andalas Vol 7, No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.7.2.136-141.2019

Abstract

Research on Spatial Spread of Invasive Foreign Plants Clidemia hirta in Bung Hatta Forest Park, Padang, West Sumatra, has been carried out from January to June 2018. The purpose of this study was to determine the spatial distribution pattern of invasive foreign plants Clidemia hirta and analyze the influence of distance from roads and influence light intensity on the distribution of the number of individuals Clidemia hirta in the Bung Hatta Forest Park. This study uses a belt transect method with a width of 2 meters along 250 meters. Along the transect, a plot of 2x2 meters was made with 125 plots. Observations made on Clidemia hirta is to calculate the number of individuals and measure the intensity of light in each plot. The results showed that the pattern of spread of  Clidemia hirta was grouped with the Morisita Index of 2.1. The distance from the road and the intensity of light does not affect the distribution of the number of individuals with R Square values of 0.022 and 0.007, respectively.

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