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INDONESIA
Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences
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.
Arjuna Subject : -
Articles 986 Documents
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Bleach Solution Requirement for Hatching of Daphnia magna Resting Eggs Retnaningdyah, Catur; Ebert, Dieter
Journal of Tropical Life Science Vol 6, No 3 (2016)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.06.03.01

Abstract

Daphnia (water fleas) belong to the zooplankton group called Cladocerans have sexual reproduction when conditions less favorable that produce diapausing eggs are enclosed in the ephippium. Hatching ephippial eggs in the laboratory is important in ecological, toxicology, genetical, and evolutionary studies. This study aims to improve the current methods of egg hatching from ephippium. Each of 50 ephippium were treated together by placing them in a glass jar and adding 50 mL bleach solution (sodium hypochlorite). Concentrations of sodium hypochlorite used in this experiment were 0%, 0.5%, 1%, 2%, 4% and 8%. These concentration treatments were crossed with the following exposure times (1, 2, 4, 8, 16, and 32 minutes). Culturing was done in 80 mL of artificial Daphnia medium, incubated in constant light and temperatures 20°C for 25 days. There were two repetitions in this experiment that were run at the same time. Result of this experiment showed that pretreatment with 0.5-8% bleach solution significantly increases the yield of total hatch rate of Daphnia magna resting eggs by about 21% over unbleached control. However, there was no significant difference among the bleach treatments. Concentration of bleach solution 0.5%, 1% and 4% significantly accelerated the time period until the first hatching (first day hatching). Difference of exposure time (1 - 32 minutes) at each concentration treatments were not influence the yield of total hatch and the time period until first hatching.
Effect of Vitamin D3 Supplementation to 25(OH)D, IL-17, and HbA1c Level in Pediatric Type 1 Diabetes Mellitus Rangkuti, Rahmah Yasinta; Tjahjono, Harjoedi Adji
Journal of Tropical Life Science Vol 7, No 1 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.01.06

Abstract

Type 1 Diabetes Mellitus (T1DM) is the consequence of autoimmune destruction process of β cells which associated with Th17 activity and low 25(OH)D level. This study was aimed to investigate the effect of vitamin D3 supplementation toward 25(OH)D level, Th17 activity (IL-17) and glycemic control (HbA1c) in pediatric T1DM. This study was designed as randomized clinical trials (RCT), double-blind, pre and post-test controlled study. Subject was children with T1DM who were divided into two groups: K1: subjects were treated with insulin 0.5–2 IU/day + vitamin D3 2000 IU/day for 3 months, K2: subjects were treated with insulin 0.5–2 IU/day + placebo for 3 months. Levels of 25(OH)D, IL-17 and HbA1c were evaluated after 3 months treatment using ELISA. After 3 months treatment, results showed that 25(OH)D level was significantly higher in K1 compared with K2 (p = 0.00), IL-17 level was significantly lower K1 compared with K2 (p= 0.022). Surprisingly, HbA1c level in K1 was not significantly different with K2 (p = 0.93). Furthermore, in vitamin D-treated group, 25(OH)D level was elevated significantly after 3 months treatment with vitamin D (p = 0.00), IL-17 level was reduced significantly after 3 months treatment with vitamin D (p= 0.001)  and HbA1c level was reduced insignificantly after 3 months treatment with vitamin D (p= 0.76). Correlation study showed that there was no correlation between 25(OH)D level with IL-17 level (p= 0.160, r= -0.284) and 25(OH)D with HbA1c (p= 0.62, r= -0.10). This study can be conclude that vitamin D3 supplementation may elevate the 25(OH)D and reduce IL-17 level but did not change HbA1c level in pediatric T1DM.
Wild Musa Species Collection of Purwodadi Botanic Garden: Inventory and Its Morpho-taxonomic Review Hapsari, Lia
Journal of Tropical Life Science Vol 4, No 1 (2014)
Publisher : Journal of Tropical Life Science

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Abstract

Indonesia, being part of the center of origin of bananas (Musaceae), has a large number diversity of bananas both wild seeded species and edible seedless cultivated varieties. Inventory of wild Musa species in Purwodadi Botanic Garden has been conducted through compiling data records from PBGs Registration section, field inspection and observation to living collections in the garden, herbarium specimens and literature studies. The results show that total 17 wild Musa accessions has been recorded planted in Purwodadi Botanic Garden since 1990 until 2012; comprises of 8 Musa acuminata sub species, 2 Musa balbisiana forms, 1 Musa ornata, 1 Musa troglodytarum, 1 Musa borneensis and 4 unidentified species Musa spp.; but only 8 living accessions remained in 2012. Morpho-taxonomic review of those 8 wild Musa accessions remained will be discussed in this paper including their geographical distributions. According to its differentiated morphological characteristics observations, it is known that there are three accessions were resembled cultivars and one unidentified species have been determined its species level, so that their registration identity needs to be revised. It is important next to prioritize ex-situ conservation of wild Musa species not yet collected in Purwodadi Botanic Garden especially from Eastern Indonesia.
Correlation of Interleukin-10, Superoxide Dismutase (SOD), and Malondialdehyde (MDA) Levels with HbA1c in Pediatric Type 1 Diabetes Mellitus Astari, Lina; Cahyono, Haryudi; Widjajanto, Edi
Journal of Tropical Life Science Vol 7, No 3 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.03.15

Abstract

Type 1 diabetes mellitus (T1DM) is an autoimmune disease characterized by pancreatic β-cell destruction and considered to be correlated with oxidative stress. This study aimed to investigate the association of oxidative stress [superoxide dismutase (SOD) and malondialdehyde (MDA) levels], inflammation [interleukin 10 (IL-10)], and glycemic control (HbA1c) in pediatric T1DM patients. This study included 25 T1DM subjects and 25 healthy control subjects and was designed as a cross- sectional study. SOD, MDA, and IL-10 levels were measured by ELISA. We obtained that that IL-10 and SOD levels were significantly decreased in the T1DM group, but MDA and HbA1c levels were significantly elevated in the T1DM group. IL-10 levels were positively correlated with SOD levels and negatively correlated with MDA and HbA1c. SOD levels were negatively correlated with HbA1c levels. MDA was positively correlated with HbA1c levels. IL-10 and SOD levels were significantly decreased, but MDA and HbA1c levels were significantly elevated in the T1DM group.
Saras Cranes in Palwal District in Southern Haryana Are Asking For Immediate Attention for Their Last Rescue Efforts Kaushik, Tirshem Kumar; Gupta, Rohtash Chand; Vats, Parveen Kumar
Journal of Tropical Life Science Vol 5, No 2 (2015)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.05.02.04

Abstract

Saras Cranes Grus antigone are endangered birds of open wetlands with highly worrying depletion trends being witnessed related with disappearance of marshy and shallow perennial, expansive wetlands throughout northern India. Alongside, massive hunting in 18th, 19th and 20th centuries and even today is another serious cause for their worrisome deterioration. Also, destruction of nests, eggs, fledglings and adults by aboriginals indeliberately or deliberately is causing these cranes to perish sooner than latter, completely.Now, Saras Cranes are found in limited number and domain as four populations in the entire world including India, China, Burma, South East Asia and northern Australia. In so far as Indian Saras Crane population is concerned, it is pitiably restricted to only few hundred in all, in Etawa, Mainpuri districts of Uttar Pradesh, Kanha National Park near Bharatpur in Rajasthan, some parts of Gujarat in the west and Assam in the east.It is interesting to note that few pairs have been seen in Faridabad and Palwal districts in southern Haryana, India. These need to be protected and conserved
Qualitative Analysis of Subsurface Water Quality in Challakere Taluk, Karnataka, India Manjunatha, H; THIRUMALA, S; Aravinda, H B; Puttaiah, E T
Journal of Tropical Life Science Vol 2, No 2 (2012)
Publisher : Journal of Tropical Life Science

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Abstract

Rural India relies mainly on groundwater for drinking and agriculture. Unsustainable withdrawal of groundwater has led to the spectra of depleting the problem of water scarcity. The available groundwater quality is not only contaminated by hazardous pathogenic germs and anthropogenic substances but also geogenic substances is adversely affect the water supply of many regions. The groundwater of Challakere taluk had many threats such as anthropogenic activities, quality deterioration by agricultural activities and over exploitation and also persistence of continuous drought condition. The results of all the findings are discussed in details which reflect the present status of the groundwater quality of the study area. Groundwater is extremely important to the future economy and growth of rural India. If the resource is to remain available as high quality water for future generation it is important to protect from possible contamination. Hence it is recommended that suitable water quality management is essential to avoid any further contamination.Keywords: Groundwater quality analysis, Challakere, Subsurface Water Quality, Karnataka
Litter Decomposition Rate of Avicennia marina and Rhizophora apiculata in Pulau Dua Nature Reserve, Banten Siska, Febriana; Sulistijorini, Sulistijorini; Kusmana, Cecep
Journal of Tropical Life Science Vol 6, No 2 (2016)
Publisher : Journal of Tropical Life Science

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Abstract

Litter decomposition rate is useful method to determine forest fertility level. The aims of this study were to measure decomposition rate, and analyze the nutrient content released organic carbon, nitrogen, and phosphor from Avicennia marina and Rhizophora apiculata litters during the decomposition process. The research was conducted in the Pulau Dua Nature Reserve, Serang-Banten on A. marina and R. apiculata forest communities. Litter decomposition rate measurements performed in the field. Litter that has been obtained with the trap system is inserted into litter bag and than tied to the roots or trees to avoid drifting sea water. Litter decomposition rate was measured every 15 days and is accompanied by analysis of the content of organic C , total N and P. Our research results showed decomposition rate of A. marina (k= 0.83) was higher than that of R. apiculata (k= 0.41). Differences of  leaf anatomical structure and sea water salinity  influenced to the rate of litter decomposition. Organic C released was declined with longer of litter decomposition, on the contrary of releasing N and P nutrients.
Morphological Study for Identification Improvement of Poeciliidae Family Based on Gonopodium structures and Morphometric analysis Rahayu, Dwi Anggorowati; Listyorini, Dwi; Ibrohim, Ibrohim
Journal of Tropical Life Science Vol 3, No 2 (2013)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.3.2.%x

Abstract

Poeciliidae family consists of small live-bearer fishes with sexual dimorphic. This fishes are widely distributed across Indonesian archipelago, but biological studies on this fish are very limited. This research is aimed to identify the species of Peciliidae fishes which lives in Sari Lake Pasuruan based on gonopodium structures and morphometric analysis. A specific characteristic of the Poeciliidae family is its gonopodium structures which is a modification of 3rd, 4th, and 5th rays of the males anal fin. Each species represented 50 samples male and female from each type we found and measured 26 characters (in mm). Cladogram based on morphometric measurements showed that sample 1 and 2 had 100% similarity, sample 3 had 94% similarity with sample 1 and 2. Sample 4 had 54% similarity with sample 1, 2, and 3. Based on gonopodium structures sample 1 and sample 2 included Xiphophorus hellerii Heckel possess large claw on the terminus of ray 5 hook is small crescent-moon shaped on 3rd ray and lacking of gonopodium palp, sample 3 possesses distal platform with 11 retrosse serrae,and membranous hook so we were able to identify the sample 3 as Poecilia mexicana Steindachner, whilst sample 4 was Poecilia reticulata Peter had a long-pointed comb-like spines on ray 3rd and and has a small hook on the tip of 5p ray.
The Effect of Turmeric Decoctum to the Angiogenic Molecules Expression on Chicken Embryo Zahariah, Sultanah; Winarsih, Sri; Baktiyani, Siti Candra Windu; Rahardjo, Bambang; Kalsum, Umi
Journal of Tropical Life Science Vol 7, No 1 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.01.10

Abstract

Turmeric (Curcuma longa) is widely used as herbal medicine, not an exception by pregnant women. Turmeric consumption by expectant mothers requires standard dose, because of its antiangiogenic effect could be harmful on placentation process and embryonic development. This experiment was undertaken to determine the effect of different concentrations of turmeric decoctum to the expression of Vascular Endothelial Growth Factor Receptor-2 (VEGFR-2) and Angiopoietin 1 (Ang-1) on the 48-hours-old chicken embryo. In this study, turmeric was extracted using decoction method to mimic the common method as adopted by people. The turmeric decoctum were freeze dried into a powder form and was used in preparing the stock solution for 200 ppm (P1), 300 ppm (P2), and 400 ppm (P3) as experimental treatments. The control group (P0) received 2% DMSO without turmeric decoctum. These were administered on the yolk sack of 16 hours incubation of fertile chicken egg by number of 200 µL. After 48 hours incubation, the expression of VEGFR-2 and Ang-1 on the chicken embryo were counted by ImageJ software. The results revealed that there is no significant effect of turmeric decoctum to the expression of VEGFR-2 and Ang-1. This suggested that turmeric decoctum was safe up to 400 ppm on chicken embryo.
Black Kite Populations Are Suffering Declining Trends In Kurukshetra And Likely To Get Further Depleted: An Analysis Of Causes Kaushik, Tirshem Kumar; Gupta, Rohtash Chand
Journal of Tropical Life Science Vol 4, No 1 (2014)
Publisher : Journal of Tropical Life Science

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Abstract

Black Kite Milvus migrans was seen capturing and captivating everything nearby the offal and garbage sites in Kurukshetra environs until recent past. Today it has been observed that between 2000 and 2010, its depletion is speeding fast, although not noticed in the scientific and social world. The skies in late morning hours are empty. Garbage sites demonstrate the absence of criss-crossing flights of this Kite. The popular sites of the roosting in the shape of Peepal Ficus religiosa, Banyan Ficus benghalensis and Mango Mangifera indica trees have been cut down in the first place. In Kurukshetra, the prime reason for the depletion could be attributed to destruction of foraging grounds (Elimination of garbage dumping sites), cutting down of traditional roosting and nesting sites and construction of colonies in the nearby erstwhile agriculture fields. The contiguous agriculture fields are devoid of any traditional trees like Peepal, Mango and hence no roosting and nesting places. The soaring Kites in the high skies in the forenoon and afternoon sessions were more or less absent. So much so that huge Garbage sites at Panipat Railway compound had no Black Kites. Shockingly, it seems that like Vultures, Black Kites are on their way to elimination in Haryana.

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