IJOEP : International Journal of Ecophysiology
International Journal of Ecophysiology (IJOEP) is a peer-reviewed biannual journal (February and July) published by TALENTA Publisher and organized by Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara (USU) as an open-access journal. It welcomes full research articles in the field of Biological Sciences from the following subject area: Anatomy, Comparative anatomy, Histology, Astrobiology, Biochemistry, Biological engineering, Biogeography, Bioinformatics, Biolinguistics, Biomechanics, Biomedical research, Biophysics, Biotechnology, Synthetic biology, Botany, Phycology, Plant physiology, Cell biology, Chronobiology, Cognitive biology, Conservation biology, Cryobiology, Developmental biology, Embryology, Gerontology, Ecology, Evolutionary biology, Genetics, Genomics, Epigenetics, Immunology, Marine biology, Microbiology, Bacteriology, Mycology, Parasitology, Virology, Molecular biology, Nanobiology, Neuroscience, Paleontology, Pathobiology, Pharmacology, Physiology, Phytopathology, Psychobiology, Quantum biology, Systems biology, Structural biology, Theoretical biology, Zoology, Ethology, Entomology, Herpetology, Ichthyology, Mammalogy, and Ornithology. Each publication will contain 10 (ten) manuscripts.
Articles
114 Documents
<![CDATA[Indirect approach on human-wildlife conflict mitigation: potential local landscape based ecotourism in Margahayu, Labuhan Ratu VII ]]>
<![CDATA[Elly Lestari Rustiati]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1269
<![CDATA[Human-wildlife conflict in Way Kambas National Park is still going on with some social and economic lost. Indirect conflict mitigation through the building local landscape based ecotourism was studied in Margahayu, Labuhan Ratu VII, East Lampung. Its local people awareness play important role in supporting its local economy empowerment. Besides Rumah Konservasi, potential natural track showing plant diversity, entrance point for wild elephant to the settlement, orange plantation and natural swamp was chosen for further works. Name boards were assigned.]]>
<![CDATA[Chrome Analysis on Lichens at Ambient Air On Living Trees ]]>
<![CDATA[Ashar Hasairin]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1270
<![CDATA[The purpose of this study was to analyze the amount of chrome in lichens live on living tree Mahoni (Swietenia macrophylla) at ambien air in Pinang Baris Bus Station Medan. Purposive sampling method was conducted. The analitical data used was corelations product moment. Results showed 5 species of lichens were identified. Each the species contain Cr and Ocrolechia tartarea was the highest. Ambien weather at the atmosphere consists of NO2 22.21 µg/m3, SO2 16.29 µg/m3, CO 11 ppm, H2S 0,00883 ppm and O3 76.01 µg/m3. Temperatur 32.34 °C, relative humidity 69 %, light instensity 500 Joule and wind speed 2,1 m/s. Corelations chrome lichens to the ambien air showed result 0,15 is very low. Corelation lichens value to the ambien air is -0,13. Showed negatif and it is not significan and very low.]]>
<![CDATA[cDNA Actin Isolated From Pandanus Sp. ]]>
<![CDATA[Dewi Indriyani Roslim]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1271
<![CDATA[Actin is one of the reference genes that is often used as an internal control in gene expression analysis. This study aimed to isolate actin cDNA from Pandanus sp originated from Riau. Fresh leaves Pandanus sp. Lake Kajuik, Langgam District, Pelalawan Regency, Riau Province. Isolation of RNA, synthesis of total cDNA, amplification of actin genes used McDowell's designed degenerate primer (PlAc46S-20/PlAc245N-20), electrophoresis, sequencing, and data analysis. Actin cDNA fragments obtained were 353 pb in size, registered at GenBank and encoded 117 amino acids. Actin cDNA fragment consists of two exons and one introne. Specific actin primers from Riau Pandanus sp. can be designed based on sequences obtained for the purpose of analyzing certain gene expressions.]]>
<![CDATA[Effect of Nano herbal Haramounting (Rhodomyrtus tomentosa) in Histology of Heart Mus musculus ]]>
<![CDATA[Syafruddin Ilyas]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1272
<![CDATA[The objective of this study was to determine the effect of histology of heart Mus musculus after giving Nano Herbal Rhodomyrtus tomentosa (Haramonting). R.tomentosa (Haramonting) is made on a nanoscale using High Energy Milling (HEM). This research use the Completely Randomized Design (CRD). Treatment consists of 6 groups, namely: Control: CMC 0.5%; T1:100mg/20gBW; T2: 141,42mg/20gBW; T3:200mg/20gBW; T4: 282,82mg/20gBW; T5:400mg/20gBW. The results of histology hearts that there were significant difference (P<0,05) between control group and treatment groups but there was not significantly different in weight of hearts (P>0,05).]]>
<![CDATA[Analysis of Heavy Metals in Coral Fish Species in Sea Natural Reserves of Krakatau Islands ]]>
<![CDATA[Sri Muwarni]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1273
<![CDATA[Krakatau Islands is an area of Nature Reserve and Marine Nature Reserve which has volcanic activity, because of the existence of Gunung Anak Krakatau which is active every year. Volcanic ash erupted contains potentially hazardous chemicals in the form of heavy metals. Heavy metals that enter into waters at a certain level can cause pollution which endangers the lives of biota and disrupt other natural resources in marine ecosystems. This study aims to determine the concentration of heavy metals Pb, Ni, Cd, Cr, Fe, Mn, Zn, Co, and Ag in reef fish species in the Krakatau Islands. Fish sampling was carried out at three points, namely Anak Krakatau Island, Panjang Island and Rakata Island. The number of individuals obtained was 9 individuals consisting of 5 families, 5 genera and 7 species. Samples of Coral fish were analyzed using Inducible Coupled Plasma Optical Emission Spectrophotometry (ICP-OES - ThermoFishers Scientific). The Pb concentrations in P. vittatus, S. virgatus, S. schlegeli and A. xanthopper have exceeded the quality standard values set by FAO. The highest concentration of Ni metal is found in P. vittatus and Cd in all reef fish species that have exceeded the quality standard. Excepted for S.virgatus, Co in all species is above the quality standard value of 0.1 mg/kg. Meanwhile, for all species obtained the concentrations of Cr, Mn, Fe and Zn did not exceed the standard quality values. The type of metal contained in Z. cornutus, the highest is Fe with a value of 14,427 mg/kg and the lowest is Co with a value of 0.099 mg /kg.]]>
<![CDATA[Photoreceptors Diversity of Fishes Eyes: (A Review) ]]>
<![CDATA[Abdul Razak]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1274
<![CDATA[This article is a review about the diversity of photoreceptors in various fishes. In this article, the author discusses the photoreceptors of freshwater fish, reef fish, sharks and tuna, and deep sea fish. The purpose of this article are to provides illustration and explanations about the diversity of photoreceptor of fish eye and its relationship with the ecosystem. The information is important in the development of fishery technology.]]>
<![CDATA[Morning call of siamang (Symphalangus syndactyllus) in Subayang River, Riau – Indonesia ]]>
<![CDATA[Zulamri]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1275
<![CDATA[Morning call in siamang is very important for the life of siamang. This behavior is important to mark its territory, communicate with neighboring groups, etc. The this research aims to determine the time of vocalization, the position of trees and the strata canopy used by gibbons in vocalization. This research was conducted in WWF Indonesia Central Sumatra Research Station Subayang Camp at Rimbang Baling Wildlife Reserve for 2 months from July until August 2017 using Visual Encounter Survey (VES) method. From this research we knew that morning call in siamang usually occurs from 08.00 am – 10.00 am in the morning. Siamang appears to choose emergent tree in the forest ridge or emergent tree on the hill slope to do vocalization. During vocalization, siamang tends to use the 3rd and the 4th strata or upper canopy layer and emergent layer which are higher than 20 m from the forest surface. This height facilitates the siamang to maximize transmission of the vocalization to the surrounding area and communicate with other groups.]]>
<![CDATA[ISOLATION AND CHARACTERIZATION OF SULFUR-OXIDIZING BACTERIA (SOB) FROM WASTE OF RUBBER FACTORY AND PAPER IN JAMBI ]]>
<![CDATA[Suparjo]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1276
<![CDATA[Sewage contains high concentration of sulfate and contaminates ground water supply. The production process in the factory produced sewage containing high amount of sulfur such as sulphide and sulphate. Sulfur bacteria, which are capable of oxidizing, reducing or partially oxidizing inorganic sulfur compounds such as Thiomicrospira, Thiothrix, Desulforomonas, Achromatium, and a group of Thiobacillus. Utilization of sulfur bacteria has done in attemp to find sewage bioremediation agents as well as to promote soil fertility. Isolation and characterization were carried out by growing the bacteria in the starkey selective medium, including pH reduction test, morphology, physiology and biochemical characterization. It has been observed that out of 2 isolates from different sources of samples (rubber and paper sewage), only one isolates related to sulfur-oxidizing bacterium (SOB) while the isolates AE01 related to true sulfur-oxidizing bacterium in genus Thiobacillus.]]>
<![CDATA[Synthetic Peptides as Immunogen in the Production of IgY Anti-C-Myc Antibody in Local Chicken (Gallus gallus) ]]>
<![CDATA[Salomo Hutahaean]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.1277
<![CDATA[Experiments conducted to determine the effect of doses of immunogen on the levels of IgY c-Myc antibody in chickens. To generate antibody, we used a synthetic peptide as an immunogen, which is developed from the epitope of the c-Myc protein. Hens were immunized a week after their first eggs were produced. Antigen diluted in double distilled water and emulsified with Freund 's Complete Adjuvant. The suspension was injected into the area of the chicken breast subcutaneously with a dose of 0, 0.02, 0.04, 0.06, 0.08, 0.1, 0.12, 0.14, or 0.16 mg per hen. Booster injection performed on days 10, 20, and 30 with the same volume of emulsion, but using Incomplete Freund 's Adjuvant and the amount of antigen was half of the amount of the first Immunization. Extraction of IgY from eggs was carried out using kits from Gallus Immunotech. The level of IgY was quantified using a spectrophotometer where the absorbance was read at 280 nm. The results showed that after the first immunization IgY content of the egg were reached the level of >5 mg/ml yolk when the dose of immunogen was above 0.1 mg/hen. The level was higher in eggs produced after the third booster ( >8 mg/ml yolk), but it is lower in all groups treated with immunogen above 0.1 mg/hen. We concluded, immunogen dosage of 0.1 mg/hen was optimum in the production of chicken IgY anti-c-Myc.]]>
<![CDATA[Effect of Agitation to Hydrocarbon Degradation by a Hydrocarbonoclastic Bacterium isolated from Chevron Pacific Indonesia’s Waste Tank in Petapahan, Riau ]]>
<![CDATA[Irda Sayuti]]>
<![CDATA[ International Journal of Ecophysiology Vol. 1 No. 2 (2019): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v1i2.2825
<![CDATA[Oxygen content is a limiting factor in the process of hydrocarbon compounds degradation by hydrocarbonoclastic bacteria. Oxygen may be supplied through agitation (stirring) during fermentation process by hydrocarbonoclastic bacteria. This study aims to to determine the optimal agitation speed for batch fermentation process by hydrocarbonoclastic bacteria isolated from the waste tank of PT Chevron Pacific Indonesia (CPI) Petapahan, Riau. This study was conducted in Biota laboratory, Universitas Andalas, West Sumatra, Indonesia. Hydrocarbonoclastic bacteria were recovered from waste samples by culturing into nutrient broth. Three different agitation speed viz. 110, 120, and 130 rpm were selected as optimization factors. The results show that the percentage of total petroleum hydrocarbon (TPH) degradation are 79.72, 87.49, and 88.35 for 110, 120, and 130 rpm, respectively. Meanwhile, chemical oxygen demand (COD) monitored during fermentation are 88.48, 90.06, and 90.16%, respectively. The agitation speed of 130 rpm is then designated as optimum factor for hydrocarbon degradation by hydrocarbonoclastic bacteria.]]>
