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Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
Published by Universitas Jenderal Soedirman
ISSN : 08531629     EISSN : 08531629     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
Majalah Ilmiah Biologi Biosfera : A Scientific Journal merupakan peer reviewed jurnal yang diterbitkan oleh Fakultas Biologi Universitas Jenderal Soedirman. Media ini mewadahi hasil-hasil penelitian di bidang biologi tropika yang terbit tiga kali setahun (Januari, Mei, September).
Arjuna Subject : -
Articles 9 Documents
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Search results for , issue "Vol 37, No 3 (2020)" : 9 Documents clear
Kerusakan Histologi Insang Ikan Sapu-sapu (Pterygoplichthys pardalis) setelah Paparan Merkuri (HgCl2) Siti Anikha Idzni; Diah Wulandari Rousdy; Junardi Junardi
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.1137

Abstract

Mercury is a heavy metal that can undergo biomagnification in the tissue of aquatic organisms, including accumulating in the gills of fish. The main accumulation of mercury occurs in organisms that live in polluted waters, one of which is the suckermouth cat fish (Pterygoplichtys pardalis). The purpose of this study was to determine the histological damage of Pterygoplichtys pardalis gills against mercury (HgCl2) exposure. This study used a Completely Randomized Design consisting of six treatments and three replications. The treatments consisted of control; 0.01 0.02; 0.04; 0.08; 0.16 ppm HgCl2 concentration. The results of the study obtained forms of gill damage in the form of edema, hyperplasia, lamella fusion and epithelial lifting. The highest level of damage occurred at 0.16 ppm HgCl2 concentration in the form of a reduction in secondary lamella structure. Exposure to mercury causes damage to P. pardalis fish gills
Kondisi Pencemaran Lingkungan Berdasarkan Parameter Mikrobiologis di Sekitar Muara Sungai Cimandiri, Teluk Pelabuhan Ratu, Jawa Barat Nur Fitriah Afianti; Lies Indah Sutiknowati
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.1022

Abstract

The Gulf waters of Pelabuhan Ratu are important waters for fisheries and tourism. However, currently  anthropogenic pollution carried by river flows threatens water quality, especially around the Cimandiri estuary. This study aims to analyze a water quality around Cimandiri estuary based on the abundance of fecal pollution indicator bacteria and patogenic bacteria on water samples taken from 15 stations. Fecal pollution indicator bacteria were enumerated using filtration method and plate count agar, while patogenic bacteria was detected using selective media and biochemical tests. The results of the study in March 2017 showed that domestic waste pollution occurred in Cimandiri estuary. The presence of pollution indicator bacteria colliform, E. coli and patogenic bacteria were found in the water column with varying density levels. The highest density of coliform bacteria was found in the mouth of Cimandiri estuary as much as 4.56x105 CFU / 100 ml and E. coli as much as  2.59x104 CFU/100 ml. Geomean of the total coliform bacteria and E. coli respectively 4.61x103 CFU/100 ml and 7.61x102 CFU/100 ml. The abundance of bacterial pollution indicators in Cimandiri Estuary has been already exceeded Indonesian water quality standard determined by the Ministry of Environment Decree. Patogenic bacteria i.e Vibrio sp. and Aeromonas sp. most found at Cimandiri Estuary.
Third Generation Bioethanol Production from Chaetomorpha sp. isolated from Pulau Seribu Seawater using Acid Pretreatment Sepwin Nosten Sitompul; Wafa Maftuhin
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.1143

Abstract

Currently, the primary source of energy based on fossil fuel, thus promoting both the excessive use of fossil fuel and global warming. Bioethanol provides sustainable energy and serves to reduce the dependence on using fossil fuel. Third-generation bioethanol production from macroalgae provides alternative green energy. To observe the potency of biofuel resources of Chaetomorpha sp. isolated from Pulau Seribu Seawater, the effect of the acid pretreatment was evaluated by using two different acids (H2SO4) concentrations. Powdered Chaetomorpha sp. was prepared, followed by acid pretreatment using H2SO4 1% and 2% (v/v). After 72 hours of fermentation, 1% H2SO4 pretreatment produced 0.026 % of the ethanol from 3 grams of Chaetomorpha sp., whereas pretreatment with H2SO4 2% did not produce bioethanol.
Penapisan Enzim Invertase dari Khamir Asal Nektar dan Madu Hutan Nur Wahidatun Ni’matun Hasanah; Miftahul Ilmi
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.1088

Abstract

Yeast is unicellular eukaryotic microorganism and one of the main resources in of organic compound. The natural compounds produced by yeasts have high commercial value; one of the examples is enzyme. Enzymes are widely used in industrial production processes. The invertase enzyme has the ability to catalyze sucrose, and hydrolyze it into equimolar monosaccharides, D-glucose and D-fructose mixtures called invert sugar. Invertase itself is commonly found in various parts of plants wich has high carbon content. Honey and nectar are compounds that have high carbon contents. Very high glucose and fructose contents show high levels of sucrose hydrolysis, so it is possible to have high levels of invertase enzymes in honey and nectar. This study aims to perform screening of invertase enzyme from yeasts that isolated from the nectar and forest honey and to find out the optimum temperature and pH for the enzyme production. This research was conducted by isolating yeast contained in wild honey and flowers nectar. Then conducted by qualitative test with selective medium and benedict test method. Quantitative test of intervase unit activity measured by DNS method with OD 540 nm. Protein concentration measured by Lowry Method with OD 650 nm. From 47 isolats 16 isolates able for invertase enzymes production. Yeast isolat SG 3.2 unit activity is 0.222 U/ml and specific activity is 7.07 U/mg. Optimum production pH and temperature are 5 and 25°C, respectively.
Modifikasi Pakan Buatan untuk Meningkatkan Pertumbuhan dan Kelangsungan Hidup Udang Windu (Penaeus monodon) Awaludin Awaludin; Ricky Febrinaldy Simanjuntak; Jumsan Jumsan
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.1225

Abstract

Nutrition for the growth of black tiger shrimp (Penaeus monodon), include protein, carbohydrate, fat, minerals and vitamins. One of the local raw materials that can be utilized is seaweed (Kappaphycus alvarezii) as an additional ingredient in making artificial feed. This study aims to determine the effect of artificial feeding mixed with seaweed meal on the growth and survival of tiger shrimp. This research is experimental with treatment A: Control, treatment B: 10 grams (seaweed flour), treatment C: 30 grams (seaweed flour), treatment D: 50 grams (seaweed flour) with 5 replications. Treatment D showed the highest growth rate of an average weight of 0.169 grams and an average length of 1.95 cm, the SR of each treatment did not differ significantly. The addition of seaweed flour gives a significant value to the growth of tiger prawns.
Tingkat Kesuburan Perairan pada Zona Litoral di Waduk Sei Pulai, Pulau Bintan, Kepulauan Riau Yoga Oktaliandi Saputra; Tri Apriadi; Winny Retna Melani
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.1093

Abstract

Sei Pulai Reservoir have been used as water supply for local communities in Tanjungpinang City and surrounding areas. The objective of this study was to determine trophic level in litoral zone of Sei Pulai Reservoir, Bintan Island. Samples were taken by purposive sampling method that represented inlet (Stations 1, 2, 3, 4, and 5); the middle of the reservoir (Station 6,7, 8); and  outlet (Station 9 and 10). The data were analyzed by TLI (Trophic Level Index).  The result of this study showed that the TLI index of inlet, middle, and outlet of Sei Pulai Reservoir were 3.62, 3.30, and 3.60 respectively. Litoral zone of Sei Pulai Reservoir were mesotrophic, with catagorized fair water quality  (moderate amount of nutrient concentration and primary productivity). Water quality are quite good for drinking water. 
Ekologi dan Keanekaragaman Flora di Pulau Enggano Dhanang Puspita; Sigit Eko Prasetyo
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.1238

Abstract

Enggano Island is one of the islands in Indonesia and is a human settlement. Enggano Island is geologically an ocean island and according to history, it has never joined the Sumatera island. Thus Enggano Island is estimated to have a unique ecosystem and endemic organisms. The purpose of this research is to study the ecology of Enggano Island and its diversity of flora. The method used is exploration, field survey, interview and literature study. The results of this study showed that Enggano Island has five ecosystems, consist of mangrove forest, coastal forest, riparian, forest, and freshwater swamp. Each ecosystem has a specific plant in accordance with the character of its habitat.
Morfologi Jenis Tembelekan (Lantana camara L.) di Beberapa Wilayah Kepulauan Buton Jumiati Jumiati; S. Hafidhawati Andarias
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.1135

Abstract

Tembelekan (Lantana camara L.) is an upright or semi-climbing shrub with a distinctive odor which is native to tropical and sub-tropical regions. This plant has many variations. The purpose of this study was to determine the morphological diversity of tembelekan using field observation methods in Buton, Central Buton, and South Buton Districts. The characterization process was carried out at the Integrated Laboratory of the Muhammadiyah University of Buton. The results of the observations were analyzed qualitatively by comparing the characters between individuals. The results showed that there were two groups of tembelekan in the Buton Islands, namely the orange and pink flowering groups. The orange flowering group has ovate leaf shape, coarse-hairy leaf surface, acute leaf apice, acuminate leaf base, serrate leaf margin, longer leaf size than the pink group, sepal is almost identical in size, orange flower group has fewer corolla than pink flower group. While the pink flowering group has deltoid leaf shape, coarse-hairy leaf surface, acuminate leaf tip, acuminate leaf base, serrated leaf margin, different sepal sizes and magenta flower color. It can be concluded that the two groups of tembelekan have differences in leaf shape, leaf tip, leaf length, sepal size, number and color of the corolla.
Faktor Risiko Infeksi Soil Transmitted Helminth pada Perajin Batu Bata di Provinsi Jawa Tengah Lilik Setyowatiningsih; Bambang Heru Budianto; Muhammad Samsi
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 37, No 3 (2020)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2020.37.3.856

Abstract

Worm infections are one of health problem in developing countries. The most infected worm parasite is the Soil-Transmitted Helminth group. The worm infected disease is generally associated with socioeconomic factors as well as clean and healthy living behaviour. Humans can be infected after ingesting food contaminated by worm eggs for A. lumbricoides and T. trichiura or through skin penetration by hookworm infective larvae. The work type of brick making is closely related to STH infection because related to the soil as the main raw material of bricks. This study aims to determine the level of infection intensity, infection risk factors, and the main risk factors of STH infection in the brick maker in Central Java Province. This research is observational research using a cross-sectional design. The results of this study indicate that the degree of intensity of STH infection in brick maker in Central Java Province is categorized in mild infections with STH infecting worms, including Ascaris lumbricoides, Trichuris trichiura, Hookworm and mixed infection (Ascaris and Trichuris). Risk factors associated with STH infection in brick craftsmen in Central Java Province were knowledge of STH (OR: 4.7 in 95% CI 1.2 - 17.5; p = 0.022) and environmental Sanitation (OR: 7, 3 95% CI 1.9 - 27.5; p = 0.002). The main risk factor that has the most influence on STH infection in brick craftsman in Central Java Province is environmental sanitation (OR: 5,7 95% CI 1,5 - 22,0; p: 0,012).

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