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Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences

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Published by Universitas Brawijaya

ISSN : 20875517 EISSN : 25274376 DOI : -

Core Subject : Agriculture, Social,

Agriculture, Biological Sciences & Forestry Environmental Science

The Journal of Tropical Life Science (JTLS) provides publication of full-length papers, short communication and review articles describing of new finding or theory in living system, cells and molecular level in tropical life science and related areas. The journal publishes articles that report novel findings of wide Tropical Life system phenomenon in the areas of biodiversity, agriculture, fisheries, health, husbandry, forestry and environmental technology. JTLS has 1 volume with 3 issues per year.

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Articles 986 Documents

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MORPHOLOGICAL VARIATION OF MALAYOPYTHON RETICULATUS (SCHNEIDER, 1801) FROM SEVERAL POPULATION IN INDONESIA Septiadi, Luhur; Fathoni, M; Hanifa, Berry Fakhry; Hamidy, Amir
Journal of Tropical Life Science Vol 9, No 3 (2019)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Reticulated python (Malayopython reticulatus) is a widely distributed snake covering throughout Southeast Asia and almost all of Indonesia archipelago and divided into several subspecies based on morphological variation and its locality. Morphological variation data of M. reticulatus from Indonesia population has never been done thoroughly. This study aims to determine the morphological variations based on 21 meristic and 3 morphometric characters from several populations in Indonesia. The data was collected from the Museum Zoologicum Bogoriense (MZB) Cibinong, Indonesia and other additional collections that are carried out from June to July 2018 and then analyzed by Principal Component Analysis (PCA) to determine the population grouping. The result showed a high variation on the scale range of anterior prefrontal, posterior prefrontal, frontal, parietal, preocular, postocular, loreal, temporal, upper labial, lower labial, and dorsal scales. Ventral and subcaudal scales in male and female specimens show high variation in the total scale count, the ratio comparison of tl: SVL measurement, indicated the sexual dimorphism. Prefrontal (anterior-posterior) and frontal scales show high variation and difficult to distinguish between each locality at the subspecies level and suggest it to be intra-specific variation. There is no significant grouping were found between populations from data on morphological variations.

THE POTENTIAL OF INDIGENOUS BACTERIA FOR REMOVING CADMIUM FROM INDUSTRIAL WASTEWATER IN LAWANG, EAST JAVA Pambudiono, Agung; Suarsini, Endang; Amin, Mohamad
Journal of Tropical Life Science Vol 8, No 1 (2018)
Publisher : Journal of Tropical Life Science

Heavy metals have been used in various areas around the world especially in the industrial sector. Heavy metals contamination is very dangerous for ecosystem because of its toxicity for some organisms. Cadmium (Cd) is a dangerous metal pollutant that can cause remarkable diverse of toxic effects, in particular for humans and animals. The use of bacteria as bioremediation agents has been widely studied because more efficient, less cost, and environmentally friendly strategy. This present study aimed to isolate and identify Cd-resistant bacteria from the industrial disposal site. Wastewater samples were collected from disposal site of agar flour industry in Lawang Malang, East Java. The collected wastewater effluent was analyzed for physicochemical properties. Isolation of Cd-resistant bacteria was carried out using serial dilution. Bacterial isolates were observed and tested for their effects on the content of Cd. The content of Cd was tested daily using Atomic Absorption Spectroscopy (AAS) for seven consecutive days. Data was analyzed using one-way ANOVA (p < 0.05) and Tukey test. Characterization of potential bacterium was performed using bacterial identification kit. Four bacteria isolates have been successfully isolated from the wastewater sample. There was a statistically significant difference between groups as determined by one-way ANOVA (F = 1229.62, p = 0.00). A Tukey post hoc test revealed that all conditions are significantly different from each other. The content of Cd in wastewater sample was statistically significantly lower after taking the A isolate (3.39 mg/L, p = 0.00), B Isolate (1.47 mg/L, p = 0.00), C Isolate (1.15 mg/L, p = 0.00), and D isolate (1.95 mg/L, p = 0.00) compared to the control treatment (5.11 mg/L, p = 0.00). Two of the most potential isolates identified as Pseudomonas flourescens (C isolate) and Enterobacter agglomerans (B isolate).

Exploration of Flora Diversity and Recommending Species for Reclamation of Coal Mining with Biodiversity Concept in Besiq Bermai Forest, East Borneo Trimanto, Trimanto; Sofiah, Siti
Journal of Tropical Life Science Vol 8, No 2 (2018)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.08.02.02

This research was conducted to gather basic information to support recovery coal mining area with study of flora biodiversity. Plants inventory were conducted explorative in Besiq Bermai forest. Some observations were conducted on plants as integral part of the documentation process. The result showed that there are 203 numbers of plant. They consist of 51 families of flora collection to be conserved in Purwodadi Botanic Garden. There are 53 species of orchid that collected from this forest, including of rare species and endemic orchid. There are 70 numbers of 1000 specimen floras to be collected in Nursery of coal mining to be used in reclamation program. There are 20 species of flora that be conserved because it is threatened species that based on IUCN. Ten species can be chosen to become pioneer species in reclamation of coal mining area. Biodiversity concept can be used in reclamation of post mining area. Prospective conservation area that called Arboretum is provided for in-situ conservation program. Some practical considerations are suggested for fu-ture reclamation projects.

The Effect of Low Power Ultrasonic Wave Exposure to Suppress Methicillin-Resistant Staphylococcus aureus (MRSA) In Vitro Mansyur, Mas; Yudaningtyas, Erni; Prawiro, Sumarno Reto; Widjajanto, Edi
Journal of Tropical Life Science Vol 8, No 2 (2018)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.08.02.07

The incidence of methicillin-resistant Staphylococcus aureus (MRSA) infection keeps increasing in every part of the world. Currently, the infection prevalence of MRSA has reached 70% in Asia. In Indonesia in 2006 the prevalence was 23.5%; the infection prevalence of MRSA in RS Atmajaya Jakarta reached 47%, in RSUP Dr. Moh. Husin Palembang reached 46%, and RSUD Abdul Moeloek Lampung in 2013 reached 38.4%. MRSA is multiresistant to antibiotics and is hard to kill compared to most other negative gram bacteria. The purpose of this research is to find the lethal power and exposure of ultrasonic waves to kill MRSA, monitoring its ef-fects via changes in shape, size, structure and Gram staining as indicators. The observations were done mac-roscopically by culturing the MRSA in a petri dish filled with Chromagar MRSA medium, while the morpho-logical observations of MRSA were done by SEM, changes in the structure using TEM, and changes in the color of MRSA cells using Gram staining. Ultrasonic wave exposure, at a lethal power = 8.432 watt, killed a significant percentage of MRSA over the control (p = 0.000). The death indicators of the MRSA due to expo-sure to ultrasonic waves of various power were: changes in shape of MRSA affected by ultrasonic power (p = 0.005), changes in size is not affected by ultrasonic power (p= 0.470), the stain of MRSA cell staining from purple to pink affected by ultrasonic power (p = 0.000), all compared with the control. MRSA died due to ne-crosis, with physical evidence of the MRSA death such as mechanical stress marked by swollen MRSA cell, shift cell wall, crack and tears, cavitation marked by pieces of MRSA cell in the field of view due to explosions inside the cell, change to an irregular cell shape, and changes in color from black to transparent.

Reproduction Characteristics of Rice Field Eel (Monopterus albus Zuieuw) on Several Functionally Changed Lands in Banyumas Regency Susatyo, Priyo; Setyaningrum, Nuning; Winarni, Elly Tuti; Chasanah, Titi; Atang, Atang
Journal of Tropical Life Science Vol 8, No 2 (2018)
Publisher : Journal of Tropical Life Science

Functional change of agricultural lands into non-agricultural lands will obviously have an impact on the dimin-ished or loss of habitat of the rice field eels (Monopterus albus Zuieuw). The aim of this research was to un-derstand the difference between (1) reproduction parameters (fecundity, gonadal maturity level (GML), and gonadal maturity index (GMI); (2) histological features of female and male gonadal development (oogenesis and spermatogenesis); (3) range of body length in each sexual phase; and (4) range of body length in each GML stage of captured eel from 4 sub-districts of Banyumas regency, Central Java (Ajibarang, Sumpyuh, Banyumas, and Sumbang). The total number of captured subjects were 631 eels; which consisted of 155; 227; 157; and 92 eels from Ajibarang, Sumpyuh, Banyumas, and Sumbang, respectively. We observed oogenesis in the stages of GML-1 (chromatin nucleolar stages and perinucleolar stage); GML-II (cortical alveolar formation stage or globular yolk stage), GML-3 (late globular yolk stage), GML-IV (mature or ripe stage), and follicle atretic stage. Also, we observed male gonadogenesis and spermatogenesis in the intersex. The range of GMI of captured eels was between 0.023 and 0.686. Eel in GML-I, GML-2, GML-3, and GML-IV had GMI within the range of 0.023-0.096; 0.096-0.425; 0.427-0.686; and >0.686, respectively. Eels achieved stage of GML-IV in body length range of 22.6-34.5 cm in Sumpyuh, 22.6-38.5 cm in Ajibarang, and 26.6-34.5 cm in Banyumas. There was no eel with the status of GML-IV in Sumbang, which had the most residential or functionally changed lands in its area. Based on these findings, can be concluded that the condition of rice fields or habitat of eel in functionally changed lands may affect eelâ€™s growth and gonad maturation.

GENOTYPING OF TOXOPLASMA GONDII IN CEREBRAL AND OCULAR TOXOPLASMOSIS Mayashinta, Dearikha Karina; Halleyantoro, Ryan; Sari, Ika Puspa; Kurniawan, Agnes
Journal of Tropical Life Science Vol 8, No 3 (2018)
Publisher : Journal of Tropical Life Science

Toxoplasma gondii is an obligate intracellular protozoon, spread world-wide and capable of infecting birds and mammals. Genetic information on T. gondii type that causes human toxoplasmosis is limited. In this study, genetic analysis of SAG2 locus was used to determine the genotype of T. gondii from cases with cerebral and ocular toxoplasmosis in Indonesia. Genotype determination was done directly on the clinical samples. A number of 28 cerebrospinal fluid and 8 vitreous humor positively infected with T. gondii, underwent PCR-RFLP to classify each isolate into one of three genotypes of T. gondii. Type I was the most common found suggesting that cerebral and ocular toxoplasmosis in Indonesia is mostly caused by type I strain of T. gondii.

Correlation of Malondialdehyde (MDA) and C-reactive Protein (CRP) Level to Neurodevelopmental Outcome in Children After the Episode of Convulsive Type Status Epilepticus Restuningwiyani, Sintha; Ariani, Ariani; Sujuti, Hidayat; Rahayu, Masruroh; Subandiyah, Krisni
Journal of Tropical Life Science Vol 8, No 3 (2018)
Publisher : Journal of Tropical Life Science

Refractory and mortality associated with status epilepticus (SE) were correlated with the degree of inflammation-induced neuronal cell death. This study was aimed to investigate the correlation of oxidative stress (Malondialdehyde, MDA) and inflammation (C-reactive protein, CRP) process with neurodevelopmental outcome in children after the episode of convulsive type SE. This study was designed as cross sectional which included 26 convulsive type SE subjects and 15 control subjects. MDA level was measured by thiobarbituric acid (TBA) method, while CRP level was measured by ELISA method. Neurodevelopmental outcome was measured by Bayley-III Scale of Infant and Toddler Development 3 month after the convulsive type SE episode. Results showed that both MDA (independent t-test, p < 0.05) and CRP (Mann-Whitney test, p < 0.05) level was significantly higher in convulsive type SE group as compared to control group. Further analysis also showed that MDA (Spearman correlation test, p = 0.000, r = 0.756) and CRP (Spearman correlation test, p = 0.000, r = 0.835) level was positively correlated with convulsive type SE. In convulsive type SE group, MDA level was negatively correlated with neurodevelopmental outcome but CRP was not. We concluded that MDA level was negatively correlated with neurodevelopmental outcome in children with convulsive type SE, but CRP was not.

New Record of Marine Parasitic Isopods (Family, Corallinidae) from South Andaman, Andaman Islands, India Anil, Pathan; Das, Tarun; Jayaraj, Kaderambil Arjunan
Journal of Tropical Life Science Vol 8, No 3 (2018)
Publisher : Journal of Tropical Life Science

Parasitic isopods are causing problems to the worldwide fishery resources. The studies on parasitic isopods are very scanty in Andaman Islands. So here we provided information on the distribution of two species of parasitic isopods of fishes from Junghlighat fish landing center of South Andaman. The two marine parasitic isopods species are Argathona rhinoceros (Bleeker 1857) and Argathon amacronema (Bleeker 1857). They found to infest the host marine fishes Epinephelus coioides (Hamilton 1822) and Epinephelus tauvina (Forsskal 1775) respectively. These two species were collected from the nostril cavity of the individual host fishes. The morphological characteristics of two specimens are described in detail. Prevalence of corallinids provides additional information to update the check list of isopods from Andaman and Nicobar Islands.

Prolonged-heated High-Fat Diet Increase the Serum LDL Cholesterol Level and Induce the Early Atherosclerotic Plaque Development in Wistar Rats Yurina, Valentina; Yunita, Ema Pristi; Raras, Tri Yudani Mardining; Rudijanto, Achmad; Handono, Kusworini
Journal of Tropical Life Science Vol 9, No 1 (2019)
Publisher : Journal of Tropical Life Science

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Rats are one of the most widely used animal models in health research. However, since rats are relatively resistant to atherosclerosis, the transgenic rats often used to study atherosclerosis in rats. Our study suggests a prolonged-heated lipid to induce atherosclerosis in rats, therefore provide a more low-cost option to study atherosclerosis in rats. Aims of this study is to compare the effect of heated high-fat diet (HFD) to the LDL and HDL cholesterol level and foam cell formation in the Wistar rat animal model. Rats were divided into three groups, control group was given with the normal diet, and the other two treated groups received oxidized HFD (heated HFD) and HFD, respectively. The heated HFD contain lard that was previously heated at 190Â°C for 24 h. Diet was given for 8 weeks. The serum LDL and HDL cholesterol level were measured before and 4th and 8th weeks after treatment with help of colorimetric measurement. The aorta analyzed for the foam cell formation after HE staining using the light microscope.Â The prolonged- heated HFD significantly increased the LDL cholesterol from the 4th week of the treatment (p = 0.023). The rats aortic from HFD and heated HFD treated groups showed a mononuclear cells infiltration and the early foam cell formation. The heating process of the lipid caused lipid oxidation which significantly increased the LDL cholesterol level of the animal model and foam cells formation. This study suggests that Wistar rats with heated HFD could demonstrated early atherosclerosis plaque development.

Distribution and Phytocomponent in the Ethanol Extract of Globba candida Gagnep. (Zingiberaceae) by GC-MS Analysis Andila, Putri Sri; Tirta, I Gede
Journal of Tropical Life Science Vol 9, No 1 (2019)
Publisher : Journal of Tropical Life Science

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Globba is the third largest genera in the Zingiberaceae family, distributed in tropical and sub-tropical regions with the center of biodiversity in Southeast Asia. The study about phytochemical contents Globba is an interesting especially Globba candida Gapnep which have been never reported. The aims of this study were to observe distribution and phytochemical compounds of ethanol extract of G. candida Gapnep. found on Bali Island. Hydrodistillation was used to determine the presence of its essential oil and a Gas Chromatography-Mass Spectrometry (GC-MS) was used to carry out the phytochemical analysis of the essential oil and ethanol extracts of G. candida Gapne. The phytochemical analysis of the rhizomes and leaves ethanol extracts of G. candida Gapnep revealed 36 and 8 identified chemical compounds representing 85,82% and 85,47% of the total analyzed extracts. However, there was no essential oil constituent found in G. candida Gapnep. The main compounds of the rhizome extract of G. candida Gapnep were levoglucosan 19.07%, allylhydrazone acetaldehyde 5.52%, trans-2,3-epoxybutane 6.30%, butan-3-enoic acid methyl ester 4.36%, 2-methylcyclopentanone 4.02%, and 2-n-propyl-oxetan 4.00%. While the dominant contents of the leaves extract of G. candida Gapnep were pinostrobin chalcone 75.63%.

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