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All Journal HAYATI Journal of Biosciences Natural Science: Journal of Science and Technology Biospecies Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences METAMORFOSA Journal of Biological Sciences Jurnal Pendidikan Matematika dan IPA AL KAUNIYAH Biogenesis: Jurnal Ilmiah Biologi Jurnal Biologi Universitas Andalas Indonesian Journal of Biotechnology TREUBIA JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Biologi Tropis JURNAL KESEHATAN PERINTIS Majalah Kedokteran Andalas Menara Ilmu International Journal of Agricultural Sciences Sainstek : Jurnal Sains dan Teknologi Best Journal (Biology Education, Sains and Technology) Jurnal Ners Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Makara Journal of Science
Djong Hon Tjong
Universitas Andalas
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Jenis-Jenis Anura (Amphibia) Di Hutan Harapan, Jambi Irvan Fadli Wanda; Wilson Novarino; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 1, No 2 (2012)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.1.2.%p.2012

Abstract

An inventarisation of the Anuran species (Amphibia) at Harapan Rainforest, Jambi has been done from October 2011 to July 2012. We collected 127 samples from the field and made identification based on morphological characteristics. We identified 19 sepcies in which belong to five families i.e. Bufonidae (Phrynoidis asper Gravenhorst., Ingerophrynus parvus Boulenger., I. divergens Peters. and Pelophryne signata Boulenger.), Microhylidae (Kalophrynus pleurostigma Tschudi.), Dicroglossidae (Occidozyga sumatrana Peters., Fejervarya cancrivora Gravenhorst., F. limnocharis Boie., Limnonectes paramacrodon Boulenger., L. malesianus Kiew.), Ranidae (Hylarana erythraea Schlegel., H. parvaccola Peters., H. glandulosa Boulenger., H. nicobariensis Stolizka., H. baramica Boettger., H. siberu Mc.Cathy and Whitten., Odorana hosii Boulenger., Rana sp), Rhacoporidae (Polypedates leucomystac Boulenger.).Keywords: Amphibia, Anura, Identification key, Harapan Rainforest
Efek Ekstrak Etanol Rimpang Temu Mangga (Curcuma mangga Val.) Terhadap Sel β Pankreas Mencit Putih Yang Diinduksi Aloksan Secara Histologis Ridho Hendrikos; Netty Marusin; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 3, No 4 (2014)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.3.4.%p.2014

Abstract

The 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.
Homerange Ophiophagus hannah Cantor, 1836 di Perkebunan Kelapa Sawit Kalimantan Tengah Kevin Origia; Wilson Novarino; Muhammad Silmi; Djong Hon Tjong
Metamorfosa: Journal of Biological Sciences Vol 6 No 1 (2019)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2019.v06.i01.p18

Abstract

Fragmentation habitat affected homerange animals, which one is King cobra. King cobra was founded in palm oil plantation because palm oil plantation provide new habitat for king cobra. King cobra homerange overlaping with other king cobra’s but the homerange areas different, due to the difference of obervation time. Microhabitat temperature, environtment temperature and humidity influences homerange of king cobra’s.environmental factor also affect king cobra homerange. Daily activity of king cobra and human activity near the king cobra habit also affect the homerange. Hunting activity of king cobra most affected factor to changes homerange king cobra. The large avalaibility of prey leads to hunting area decrease and narrow the hunting area of king cobra. Keywords : Radiotelemetry, king cobra, homerange, environment factor
Fisiologis Darah Ikan Baung (Hemibagrus nemurus Blkr.) Nelmi Fitria; Djong Hon Tjong; Indra Junaidi Zakaria
Metamorfosa: Journal of Biological Sciences Vol 6 No 1 (2019)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2019.v06.i01.p06

Abstract

This study aimed to examinine the physiological condition of Baung's blood (Hemibagrus nemurus Blkr.) on the Batang Ombilin River, West Sumatra. This research uses quantitative descriptive method where quantitative data in the form of physic value is presented through comparison table average. The results showed the physiology of blood of Baung fish (H. nemurus Blkr.) where the average amount of erythrocytes was similar in both sites where in Ombilin, the erythrocyte count had an average value of 2,268 x 106 cells/mm3 and in Sawahlunto 2,267 x106 cell/mm3. While for the average number of leukocytes of Baung fish (H nemurus Blkr.) In Sawahlunto is greater than the average number of fish leukocytes in Ombilin where in Sawahlunto with an average leukocyte count of 3,5x104 cells / mm3 and in Ombilin is 2,7x104 cells/mm3. And the blood hematocrit value of Baung fish. In Ombilin obtained a value of 38,8% and in Sawahlunto of 38,6%. As for the calculation of hemoglobin levels in both sites, hemoglobin levels were found in low levels of 8,5 g/dl in Ombilin and 5,4 g/dl in Sawahlunto. The levels of erythrocytes, leukocytes and blood hematocrit of Baung fish are at normal ranges. While hemoglobin levels at both sites were under normal conditions.
VARIASI MORFOLOGI ULAR CANTIK MANIS, Tropidolaemus wagleri Wagler, 1830 (SERPENTES: VIPERIDAE) DI SUMATERA BARAT, INDONESIA Hadi Kurniawan; Djong Hon Tjong; Wilson Novarino
Metamorfosa: Journal of Biological Sciences Vol 5 No 1 (2018)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2018.v05.i01.p20

Abstract

Tropidolaemus wagleri commonly known as complex species who widely distributed at tropical areas in Southeast Asia. We predicted that widespread distribution may affect the morphological variation among different population geographycally. This study were conducted based on direct survey and sampling in the fieldwork. The study sites was divided into two categories based on Bukit Barisan range which streching from North to South Sumatra island consist of Padang, Padang Panjang in western part of Bukit Barisan, and Payakumbuh, Dharmasraya in eastern part of Bukit Barisan. In total 21 individual T.wagleri were analysed based on 20 mensural characters (morphometric) and 19 multistate characters (meristic). Male and female was analysed separately based on non parametric statistics Kruskall Wallis and Mann Whitney U Test. The relationship between population were analysed based on UPGMA tree and Principal Component Analysis (PCA) plot. The result showed the significant variation between female T. wagleri between western and eastern part of Buki Barisan range. In contrast, the variation has not detected among the population of T. wagleri male. The morphological character which showed the significant value are Head Length (HL) and Neck Scales Row (NSR). The west population of T. wagleri has more shorter Head Length (HL) and Snouth Length (SnL) than east population. Howefer, the west T. wagleri population has more number in Neck Scales Row (NSR) character than east population. The population of female T. wagleri in Padang Panjang has more close relationship to Padang than to female population T. wagleri in Dharmasraya based n UPGMA tree.
GENETIC DIVERGENCE AND GEOGRAPHIC DISTRIBUTION OF FROGS IN GENUS FEJERVARYA FROM INDONESIA INFERRED FROM MITOCHONDRIAL 16S rRNA GENE ANALYSIS Nia Kurniawan; Tjong Hon Djong; Tesri Maideliza; Amir Hamidy; Mahmudul Hasan; Takeshi Igawa; Masayuki Sumida
TREUBIA Vol 41 (2014): Vol. 41, December 2014
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v41i0.361

Abstract

The Indonesian archipelago is an ideal setting for the study of speciation and biogeography. This archipelago is divided into three island groups based on zoogeography: Sundaland, Wallaceaand the Australian region. In this paper we used frogs in genus Fejervarya (Bolkay) to study biogeography and examine patterns of gene flow across proposed zoogeographic boundaries. Severalmolecular studies on Fejervarya species from Indonesia have been carried out, but comparative studies among members of the genus Fejervarya have yet to be performed. In order to elucidate genetic divergence and geographic distribution of these frogs, we conducted a molecular analysis of the mitochondrial 16S rRNA gene using 179 frogs from five Fejervarya species. In total we collected from 32 localities in Sumatra, Kalimantan (Indonesian part of Borneo), Java, Bali, Sulawesi and Lesser Sunda Islands in Indonesia. Molecular phylogenetic analysis recovered 35 haplotypes and showed that frogs in the genus Fejervarya were divided into two well-supported clades. The first group were of three species, F. limnocharis, F. iskandari and F. cf. verruculosa and the other group clade consisted of Fejervarya cancrivora and Fejervarya sp. (Sulawesi-type). The average sequence divergence among these four species ranged from 1.09 to 16.03% (mean = 11.29±2.83%). The present results clearly show that there are five Fejervarya species in the Indonesian archipelago. Fejervarya limnocharis and F. cancrivora are widely distributed and sympatric in Sumatra, Borneo and Java. Fejervarya iskandari is not endemic to Java and also occurs in the Lesser Sundas. Fejervarya cf. verruculosa and Fejervarya sp. (Sulawesi-type) are endemic to Lesser Sunda and Sulawesi Island, respectively. Key words: Fejervarya, genetic divergence, geographic distribution, 16S rRNA gene
The Effect of Mesenchymal Stem Cell Wharton Jelly on Alzheimer’s Rat with Y-Maze Test Method Sisca Dwi Yarni; Hirowati Ali; Djong Hon Tjong
Majalah Kedokteran Andalas Vol 44, No 2 (2021): Online July 2021
Publisher : Faculty of Medicine, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/mka.v44.i2.p112-116.2021

Abstract

Objective: This study aims to examine the y-maze test in alzheimer's rat after giving mesenchymal stem cell wharton jelly. Methods: This study used the y-maze test method to test the cognitive test of rat with the Y arm model. The treatment group consisted of a control, AlCl3, MSC-WJ and a combination of AlCl3 and MSC-WJ. The results obtained were analyzed in the form of a percentage. Results: The results of this study showed that the y-maze test showed that MSC-WJ had a significant effect compared to the AlCl3 control group in the alzheimer’s rat, namely 51.33% and 12.31%. Conclusion: In this study it was concluded that that MSC-WJ has a significant effect on alzheimer’s rat with y maze test.Keywords: AlCl3; Alzheimer’s; Mesenchymal Stem Cell Wharton Jelly
Change of Morphological Characters of an Introduced Population of Bilih Fish (Mystacoleucus padangensis Bleeker, Pisces: Cyprinidae) in Toba Lake Nofrita nofrita; Dahelmi dahelmi; Hafrijal Syandri; Djong Hon Tjong
International Journal of Agricultural Sciences Vol 3, No 1 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.3.1.23-29.2019

Abstract

Population of Bilih Fish (Mystacoleucus padangensis) in Singkarak Lake has decreased as the effect of intensive exploitation and changes in water use function. Many appropriate works have been conducted for the fish conservation. One of them is introducing Bilih fish population to a new habitat,  Toba Lake. After nine years of releasing the fish, there was a hypothesis that these fish had undergone some changes on their morphology compared to their original population in Singkarak Lake. The changes could occure in some morphological characters and also the increase or decrease of their growth. This study was aimed at comparing morphology characters between Bilih fish introduced to Toba Lake with the original population in Singkarak Lake. Survey method was used and 400 samples of fish were taken from each Singkarak and Toba Lakes.  Parameters measured were 29 morphological characters. Data were analyzed using Mann Whitney U Test with SPSS 22. The results showed that 27 morphological characters of introduced fish had changed. Characters that had not changed were dorsal fin (anterior end)-anal fin distance (DFAF) and preanal distance (PD). Population of Bilih fish in Toba Lake might keep changing in the process of morphological character differentiation as long as environment factors still support the life of Bilih fish. 
Viral Load Terhadap Nilai Hematokrit Pada Infeksi Virus Dengue Rita Permatasari; Almurdi Almurdi; Djong Hon Tjong
JURNAL KESEHATAN PERINTIS Vol 7 No 1 (2020): JUNI 2020 : Jurnal Kesehatan Perintis (Perintis's Health Journal)
Publisher : LPPM UNIVERSITAS PERINTIS INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (684.241 KB) | DOI: 10.33653/jkp.v7i1.413

Abstract

Demam berdarah adalah suatu penyakit infeksi yang disebabkan oleh virus dengue dan ditularkan melalui gigitan nyamuk Aedes aegypti. Virus dengue yang masuk ke tubuh manusia, akan menyerang sel dendritik dan sel retikuloendotelial lain seperti sel hati, makrofag sehingga menyebabkan diproduksinya mediator imun selular dan humoral. Mediator imun menyebabkan peningkatan permeabilitas kapiler sehingga cairan plasma keluar ke jaringan, akan menyebabkan hemokonsentrasi dan terjadinya peningkatan nilai hematokrit. Tujuan penelitian ini adalah untuk mengetahui hubungan viral load dengan nilai hematokrit pada infeksi virus dengue. Manfaat penelitian ini adalah memberikan penjelasan tentang mekanisme terjadinya infeksi virus dengue yang berpengaruh terhadap jumlah viral load dan nilai hematokrit pada infeksi virus dengue dan dapat digunakan sebagai referensi bagi pembaca maupun peneliti lainnya. Selain itu juga dapat dijadikan sebagai referensi diagnosis penyakit infeksi virus dengue serta meningkatkan kualitas penanganan terhadap penderita infeksi virus dengue. Metode Penelitian dengan desain deskriptif korelasional dengan 49 sampel yang dikumpulkan dari Laboratorium pasien infeksi dengue, data penelitian di analisis dengan software SPSS uji Pearson dengan menggunakan metode Nested-qPCR. Hasil Analisis penelitian menggunakan Software SPSS dengan uji korelasi Pearson, didapatkan hubungan jumlah viral load dengan nilai hematokrit pada infeksi dengue sangat lemah dengan nilai koefisien korelasi r = 0,163 dan nilai signifikan 0,381 > 0,05. Kesimpulan dari penelitian ini yaitu tidak terdapat hubungan bermakna antara Viral Load Dengan Nilai Hematokrit Pada Infeksi Virus Dengue.
Phylogenetic Study of Bufonidae (Amphibia: Anura) from Sumatera and Asia Based on Cytochrome B Gene Djong Hon Tjong; Dewi Imelda Roesma; Silvia Indra
Journal of Tropical Life Science Vol. 11 No. 3 (2021)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.11.03.15

Abstract

Bufonidae is widely distributed amphibian family around the world, including Indonesia (Sumatra) and Asia. Sumatra is an island which has separated because of sea level increase and create gene flows barrier for amphibian in Sumatra and Asia. The purpose of this research is to analyse Bufonidae phylogenetic which exist in several locations in Sumatra and Asia based on gene cytochrome b analysis. Samples were collected from six localities in West Sumatra. DNA extraction and amplification has been done in Genetics and Cell Biology Laboratory, Andalas University, whereas DNA sequencing were analyzed at MacroGen USA DNA Sequencing Laboratory, South Korea. About 14 tissue samples of Bufonidae from West Sumatra has been analyzed. The relationship of Bufonidae phylogenetics in Sumatra and Asia were divided into three main clusters. Duttaphrynus melanostictus in Sumatra is closer to Duttaphrynus melanostictus from India with 0,3-0,5% sequence divergence and it is a group of paraphyletic with Duttaphrynus melanostictus from Vietnam, Taiwan, and China.
Co-Authors - Jumawita - Syaifullah Aadrean Aidil, Dyta Rabbani Aldino Fauzil Fanani Almurdi Almurdi Amir Hamidy AMIR HAMIDY Anggraini, Debie Annisya Fitri Anthoni Agustien Anugrah Viona Agesi Arum Setiawan Asnul Fitria Aurora, Dhea Apriano Dahelmi Dahelmi Dahelmi David Gusman Dewi Imelda Roesma Dharmayanthi, Anik Budhi Dian Juliadmi Djoko T. Iskandar Djoko T. Iskandar, Djoko T. Dwitya Elvira, Dwitya Dyta Rabbani Aidil Elli Firdamila fachrul reza, fachrul Fauzan . Feskaharny Alamsjah Firdamila, Elli Fuji Astuti Febria G Gunawarman, G Gusman, David Hadi Addaha, Hadi Hadi Kurniawan Henny Herwina Hirowati Ali Hirowati Ali, Hirowati Ida Ayu Putu Sri Widnyani Ilhamdi, Ilhamdi Indra Junaidi Zakaria Irawati Chaniago Irvan Fadli Wanda Jamsari Jamsari Janra, Muhammad Nazri Jon Affi, Jon Juliadmi, Dian Kevin Origia Kevin Origia Kharisma Putra Liza Aulia Yusfi Mahmudul Hasan Mahmudul Hasan, Mahmudul Marlina Marlina Masayuki Sumida Masayuki Sumida, Masayuki Maulana, Imron Melinda, Annisa Menkher Manjas Meri Wulandari Muhamad Irsyad Muhammad Silmi Nelmi Fitria Netty Marusin Netty Marusin Nia Kurniawan Nia Kurniawan Nofrita Nofrita Nofrita Nofrita Nurul Aida Nurvalinda, Nurvalinda Nuswantoro, Nuzul Ficky Nuzulia Irawati Oktaviana, Dili Padilla, Putri Rahma Prawira, Furqan Dwiki Lintang Putri, Emilya Putri, Fanny Adhy Rahmadina, Shovinda Ravelino Nesty Resti Rahayu Ridho Hendrikos Rifka Rahmat Riska Mayori Rita Permatasari Rivi Hamdani Rizaldi Rizaldi Rizia Irsa Salis, Viola Mutiara Saputri, Rahmi Agu Silvia Indra Sisca Dwi Yarni Sri Wahyuni Handayani Sri Wahyuni Handayani, Sri Wahyuni Syaifullah Syaifullah Syaifullah Syaifullah Syaifullah Syandri, Hafrijal Takeshi Igawa Takeshi Igawa, Takeshi Tesri Maideliza Tofrizal Wilson Novarino Yarni, Sisca Dwi Yelvita Sari Yeni Gusma Yanti Yuliarni Syafrita Yurike Nova Edlin Zil Fadhillah Rahma Zozy Aneloi Noli