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[Growth and Productivity of Silkworm Bombyx mori L. (Lepidoptera: Bombicidae) Given Mulberry (Morus sp.) It Contains Vitamin B1 ]]>
<![CDATA[Masitta Tanjung]]>
<![CDATA[ International Journal of Ecophysiology Vol. 3 No. 2 (2021): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v3i2.10092
<![CDATA[The effect of mulberry leaves that contain vitamin B1on the growth and productivity of silkworms (Bombyx mori L.) was studied. This research used Completely Randomized Design (CRD) with the treatments were 10 silkworm feed with an untreated control leaves and an addition 0.1, 0.2, 0.3 and 0.4 mg/100ml of vitamin B1. Every treatment consisted of 3 replications. The results showed that an addition of vitamin B1 inhibited the growth, morphological structure of instars III, and IV such as head length, head diameter, body length, and body diameter, the weight of instars III, V, and the percentage of cocoon shell. Vitamin B1 has no effect on the morphological structures of instars V, the weight of instars IV, the pupae weight, the fiber length, the fiber percentage, the cocoon weight, and the cocoon shell weight. However, the frontal and posterior glands were decreased at the concentration 0.4 mg/100ml]]>
<![CDATA[Bird Diversity in Asam Kumbang Crocodile Breeding Area Medan Selayang District Medan City ]]>
<![CDATA[Erni Jumilawaty]]>
<![CDATA[ International Journal of Ecophysiology Vol. 3 No. 2 (2021): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v3i2.10095
<![CDATA[Asam Kumbang Crocodile Breeding is a breedig ground for crocodiles that contain several birds. Species diversity is indicated by differences in the types of organisms. One of the most diverse organisms of its kind is birds. Birds in this region are able to setle down and coexist with crocodiles. Crocodiles are one of the predators of bird. It aims to identify the diversity of birds and status of protected birds at the research site. The method used in this study were point count method, thus resulted in 12 species of birds belonging to 5 ordo, 6 family, and 11 genus. The most common birds species found on the 3rd observation with as many as 9 species of birds, while the least species of birds found on the 4th observationas many as 5 species of birds. Diversity index value (H’) of bird in location classified into category of “moderate category” with the results of analysis 1,171 and the indeks equitabilitas value of 0,47. According to the Ministry of Environment and Forestry Regulation 2018, there are 2 types of birds found in the study area of birds found in the study site.]]>
<![CDATA[The Diversity of Fish in The Aek Sibundong District Dolok Sanggul Regency Humbang Hasundutan ]]>
<![CDATA[Hesty Wahyuningsih]]>
<![CDATA[ International Journal of Ecophysiology Vol. 3 No. 2 (2021): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v3i2.10096
<![CDATA[The diversity of fishes in Aek Sibundong, Dolok Sanggul regency, Humbang Hasundutan district, was conducted from April to October2018. The aim of this research was to analyze variety of fishes and their physical-chemical factors related to fishesin Aek Sibundong. This research used purposive sampling method on four location based on human activities. The first location was stationed with no activities, the second location tofu waste disposal station, the third location was slaughter house station and last location was belonge to sand dredging station. Sampling used nets as trap for the fishes. Seven species of fishes had been found from the sites where classified into 3 order ( spesies from ordo Cypriniformes 4, Perciformes 1 and Siluriformes 2). The result showed that station 1 had the highest fish density was 0,59 ind/m2 belong to Tor tambroides and the highest fish diversity index at 1,318. The temperature, light intensity, light penetration, phosphate, and Biochemical Oxygen Demand (BOD5) had strongly correlated with fish diversity in the waters of the Aek Sibundong.]]>
<![CDATA[Inventarization of Zingiberaceae in The West Block Batang Toru Forest of North Tapanuli North Sumatra ]]>
<![CDATA[Nursahara Pasaribu]]>
<![CDATA[ International Journal of Ecophysiology Vol. 3 No. 2 (2021): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v3i2.10097
<![CDATA[Zingiberaceae is one of the dominating plant family in West Block, Batang Toru forest region. According to preliminary survey, the forest is inhabited by many species of Zingiberaceae while information on its species richness is still limited. The aim of the study was to collect the species of Zingiberaceae in West Block, Batang Toru forest region, conducted from July to September 2018. Inventarization was conducted using exploration method, by exploring along designated tracking ways. The study found 18 species of Zingiberaceae belonging to 10 genera was obtained, two of them were Alpinia hansenii and Boesenbergia belalongensis were new record in Sumatra. From all species that was found, two species were known to live as epiphytes and the other 16 were terresterials. Zingiberaceae occur in varying habitats, starting from forest edge, open area with optimum sunlight and inside forest floor. The most species found belong to Globba and Amomum.Batang Toru Forest]]>
<![CDATA[Bioprospecting of Chitinolytic Diazotroph Rhizospheric Bacterial Isolated From Mucuna bracteata as Biocontrol Against Ganoderma boninense ]]>
<![CDATA[Yurnaliza]]>
<![CDATA[ International Journal of Ecophysiology Vol. 3 No. 2 (2021): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v3i2.10100
<![CDATA[Ganoderma boninense is an infectious phytopathogenic fungus of basal stem rot in oil palm with the need of significant biocontrol strategy or alternative. Bioprospecting of chitinolytic diazotroph bacteria from rhizosphere of Mucuna bracteata as Legume Crop Cover (LCC) in oil palm plantations is potential to investigated. The aims of this study were to obtain total population of diazotroph bacteria and chitinolytic diazotroph bacteria, to evaluate its antagonistic properties followed by identification of the isolate based on 16S rRNA gene encoding. Diazotroph bacteria were isolated from M. bracteata rhizosphere originating from three oil palm plantations (PTPN III, PTPN IV unit Adolina Medan, and Perkebunan rakyat Simalingkar), followed with chitinolytic assay, morphological characterization, antagonistic assay against G. boninense, lytic assay of G. boninense mycelium by using crude chitinase and molecular identification of potential isolate. Total population of diazotroph bacteria in M. bracteata rhizosphere ranged between 2.80–3.83 × 106 CFU/g. Screening of chitinolytic diazotrophs using colloidal chitin medium obtained 23 bacterial isolates and 14 of them were known as antagonists to G. boninense. Five isolates with the highest anti Ganoderma were DK17 (71,15%), DK10 (69,70%), DK07 (59,63%), DK21 (53,48%), and DK19 (52,0%). The highe1st lytic activity of crude chitinase to G. boninense mycelium was produced by DK17. Molecular identification of five potential isolates revealed different identities, e.g. Enterobacter aerogenes (DK07), Mycobacterium senegalense (DK10), Bulkhoderia cepacia (DK17), Pseudomonas stutzeri (DK19), and Bulkhoderia cepacia (DK21). Based on these results, chitinolytic diazotroph bacteria isolated from M. bracteata rhizosphere were able to control G. boninense]]>
<![CDATA[The Effect of Giving Nanoherbal of Biwa (Eriobotrya japonica (Thunb.) Lindl. (Thunb.) Lindl.) Leaf on the Quality and Quantity of Spermatozoa And Microstructure in Diabetes Rat (Rattus norvegicus) Induced by Alloxan ]]>
<![CDATA[Syafruddin Ilyas]]>
<![CDATA[ International Journal of Ecophysiology Vol. 3 No. 2 (2021): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v3i2.10101
<![CDATA[One of causes in decreasing quantity and quality of spermatozoon is disease. Increased blood glucose levels can trigger demage of spermatogenesis in the testes, thereby reducing spermatozoa production. Biwa leaves (Eriobotrya japonica (Thunb.) Lindl.) contain triterpenes which are expected to overcome blood glucose levels and quantity of spermatozoa in the cauda epididymis. To investigate this problem, an experimental test of nano herbal of biwa leaves was carried out in a rat model (Rattus norvegicus) diabet. There are five treatments and six replications, it was found that the best dose of 500 mg/kg body weight could improve spermatogenesis so that the number of rat spermatozoa remained normal. It was concluded that nano herbal of biwa leaves can be used as an alternative drug to maintain fertility as seen from spermatogenesis and the number of spermatozoa. The result is analyzed by ANOVA test and further by Post-Hoc-Test (Duncan). The result show the significant differences (p<0,05) to quantity and quality of spermatozoon of adult white male mouse (Rattus norvegicus).]]>
<![CDATA[Immunohistochemistry examination to reveal the pathogenesis of Oral Squamous Cell Carcinoma ]]>
<![CDATA[Syafruddin Ilyas]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11150
<![CDATA[Oral mucosal cancer is a type of cancer that develops from the lining of the oral cavity (mucosa). The main risk factors are smoking and drinking alcohol. The pathogenesis of oral mucosal cancer involves various interrelated etiologies such as smoking and alcohol consumption, human papilloma virus (HPV), and patients who have undergone hemopoietic stem cell transplants (stem cell transplants). Meanwhile, it does not rule out the possibility of internal factors such as genetics. There are several types of oral mucosal cancer, but oral squamous cell carcinoma is the most common type of oral cancer and represents more than 90% of all head and neck cancers. Immunohistochemical examination of the Oral squamous cell carcinoma smear biopsy material which included examination of antibodies in the form of cytokeratin, CDT1, Ki-67, Geminin, Mcm2, γ-H2A/ histone family member X and Aurora-A, BCL-2, VEGF, p53, p63, p,73, Prb, c-erbB2 or HER2/neu, upregulation of telomerase (human telomerase reverse transcriptase; hTERT), loss of heterozygosity (Chromosome loci 3p, 8p, 9p, 4q, 11q, 13q, 17p), High-risk Human papillomavirus 16/18 (HR-HPV16 and 18), p16, Overexpression of EGFR, c-jun, c-fos, surviving (BIRC5), MMP-9, MMP9, TGF-, COX-1, and-2, and amplification of Cyclins D and E. Thus, paving the way for appropriate therapy.]]>
<![CDATA[Stem Cells: DNA Microarray Approach ]]>
<![CDATA[Syafruddin Ilyas]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11151
<![CDATA[In recent years, stem cell therapy has become a very promising and advanced scientific research topic. The development of treatment methods has evoked great expectations, not only researchers but also society due to its potency in cell-based therapy. Stem cells are unspecialized cells of the human body. They are able to differentiate into any cell of an organism and have the ability of self-renewal. Broadly speaking, the application of stem cells can be divided into two, namely: autotransplantation (donor and recipient are same person) and allotransplantation (donors and recipients are people who different). However, other applications namely xenotransplantation (donor and the recipient is the species that different) now it also becomes center of attention. Since it is challenging to isolate stem cells, molecular methods specifically the use of a DNA microarray, are one way to find stem cells. Microarrays have been applied in stem cell research to identify major features or expression signatures that define stem cells and characterize their differentiation programs toward specific lineages. This paper is a review focused on a discussion of the of the microarray technology and types of stem cell transplant.]]>
<![CDATA[Review Journals : Molecular From Anonaceae ]]>
<![CDATA[Syafruddin Ilyas]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11152
<![CDATA[There are roughly 120 species of the Anona genus, which is found in tropical and subtropical areas. The diversity at the species level and similarity of the leaves, fruits, and stems that are produced as a result of plant cultivation and hybridization create new plants that are difficult to macroscopically identify. The diversity of the genus Anona can be accurately determined using molecular identification. For example, genetic analysis utilizing PCR and the RAPD and AFLP procedures is one way to gather molecular data. In this study, we inform the development of species-specific primers by differentiating the most agronomically interesting Annona species that, until recently, a new formal classification based on molecular phylogenetics has been developed in order to have a quick and precise method of distinguishing Annona between species agronomically.]]>
<![CDATA[Human Papillomavirus: Detection Method and Infection ]]>
<![CDATA[Syafruddin Ilyas]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11153
<![CDATA[The Human Papilloma Virus (HPV) is a small non-enveloped DNA virus, around 8000 bp in size and only humans become its host by infecting skin epithelial tissue, human oral mucosa and anogenital epithelium. Human Papillomavirus is often found in patients and is ranked as the second most malignant disease in women, belonging to the Alphapapillomavirus genus. HPV infection can be identified through the structure of the HPV virus itself and the particles contained therein which initiate the carcinogenic process of its host. The research methods used in this study are literature studies. The literature study method is a series of activities related to the method of collecting library data, reading, recording and managing research materials. The method often used to detect HPV is the polymerase chain reaction (PCR). The viral cell reproduction process is aided by activated proteins E1, E2, E4, E5, E6, and E7, which also delay apoptosis and alter the host cell cycle in various ways to cause cell alterations that result in cancer cells.]]>
