cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota malang,
Jawa timur
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
 31   32   33   34   35 
Cyanobacteria Community Dynamics and Trophic Status of Intensive Shrimp (Litopenaeus vannamei) Farming Pond in Situbondo East Java Indonesia Aliviyanti, Dian; Suharjono, Suharjono; Retnaningdyah, Catur
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.07.03.10

Abstract

The objective of this study was to analyze the dynamics community structure of Cyanobacteria and trophic status in ponds of intensive shrimp culture (Litopenaeus vannamei) in Situbondo based on Trophic Diatom Index (TDI).  The ex post facto research was conducted in situ in the hamlet of Pond Mutiara Mas III Klatakan Situbondo East Java Indonesia.  Observation of Cyanobacteria and Diatoms community structure were done every week during four cycles of shrimp farming ponds.  Cycle of shrimp farming ponds is the times for enlargement process of the shrimps from seed to mature which ranges from 90-120 days.  The dependent variables were the density of Cyanobacteria and Diatoms community, as well as chemical parameters nitrite and orthophosphate.  Trophic status was determined from TDI be counted from data of diatom density.  All of the data were then classified using cluster and biplot analysis program PAST Ver. 3.11 to discribe the profile of ecosystem quality.  The research results showed that there were four taxa of Cyanobacteria during farming cycle which the highest density was found from the genus of Oscillatoria.  Based on the value of TDI, we found that the trophic status of water in shrimps pond during the production process was eutrophic until hyper-eutrophic.  The water quality was decreases along with the length of incubation time.
Toxicological Evaluation of Tetrameles nudiflora Methanolic Extract Banjarnahor, Sofna Dewita Sari; Dewijanti, Indah D; Angelina, Marissa; Megawati, Megawati; Fajriah, Sofa
Journal of Tropical Life Science Vol 5, No 1 (2015)
Publisher : Journal of Tropical Life Science

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

Abstract

Exploration of Mekongga national park resulted in novel finding of anticancer property from Tetrameles nudiflora. The investigation of toxic features of T. nudiflora is vital for further studies of its pharmacological activities. Acute toxicity test was done on methanolic extracts of T. nudiflora in DDY mice. Animals were divided into 5 groups: Group 1 was given 1 ml solution of 2.5% Tween 80 in a single oral dose; Group 2, 3, 4 and 5 were orally administrated a single dose of 1, 2, 4 and 8 g/kg body weight T. nudiflora, respectively. Toxic effects of the extract were evaluated on the basis of behavioral observations in the form of locomotor activity; curiosity; defecation; urination and also animal mortality. Observations were carried out for 14 days. No significant changes on body weight, and behavioural activities were recorded. Mortality was recorded up to 22% of the male group, and 11% within the female group. The T.nudiflora extracts tested for toxicity against brine shrimp had 50% lethal concentration (LC50) values of 46.67 μg/ml. It can be concluded that methanol extracts of T. nudiflora are potential to be explored as anticancer (LC50=46.67 μg/ml). The extract is slightly toxic in male mice with Lethal Dose 50 (LD50) 12.6 g/kg body weight, and practically non toxic for female (LD50>15 g/kg body weight).Key words : Tetrameles nudiflora, brine shrimp lethality test, acute oral toxicity, LD 50.
The operation and production of the barramundi, Lates calcarifer, at the Good Fortune Bay (GFB) Barramundi Farm Australia Aji, Ludi Parwadani
Journal of Tropical Life Science Vol 2, No 1 (2012)
Publisher : Journal of Tropical Life Science

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

Abstract

Barramundi (Lates calcarifer) is a commercially important species in Australia and Southeast Asia. Barramundi are not difficult to accept artificial diets, resistant to disease and can grow faster in warm climates. System operation in Good Fortune Bay (GFB) Barramundi Farm in Kelso can be divided into nursery and grow-out management sections. The water source for nursery and grow-out is come from ground water with semi-recirculated system was applied. Every cage in the grow-out ponds has equipment with 4-wheel paddlewheel aeration. Aeration is eminent usually at night when the dissolve oxygen (DO) level in the ponds drop. To prevent predation and disease, each cage is covered by oyster tray lid and nursery tanks are always cleaned to remove pathogens. In the nursery, pellet is given to fish and the pellet size increase depends on the fish size, whereas, fish are feed by floating pellet for grow-out fish. Moreover, farmers measure water quality like DO every morning and also take water sample for ammonia, nitrite, nitrate analysis once a month. GFB Barramundi Farm just sells their product domestically and not import to other country since the price of barramundi from South East Asia such as Indonesia and Vietnam is much cheaper even the quality is lower than Australia product. This is because the labor and production cost in Australia is higher than South East Asia. Keyword: barramundi, nursery, grow-out, farm
APPLICATION OF WATER QUALITY AND ECOLOGY INDICES OF BENTHIC MACROINVERTEBRATE TO EVALUATE WATER QUALITY OF TERTIARY IRRIGATION IN MALANG DISTRICT Kartikasari, Desi
Journal of Tropical Life Science Vol 3, No 3 (2013)
Publisher : Journal of Tropical Life Science

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

Abstract

This research aims to determine the water quality of tertiary irrigation in several subdistricts in Malang, namely Kepanjen, Karangploso, and Tumpang. The water quality depends on the water quality indices (National Sanitation Foundations-NSF Indices and OConnors Indices based on variables TSS, TDS, pH, DO, and Nitrate concentrate) and ecological indices of benthic macroinvertebrate (Diversity Indices Shannon-Wiener, Hilsenhof Biotic Indices-HBI, Average Score per Taxon-ASPT which is calculated by Biological Monitoring Working Party-BMWP, Ephemeroptera Indices, Plecoptera, Trichoptera-EPT). Observation of the physico-chemical water quality and benthic macroinvertebrate on May 2012 to April 2013. The sampling in each subdistrict was done at two selected stations in tertiary irrigation channel with three plot at each station. The data of physico-chemical quality of water were used to calculate the water quality indices, while the benthic macroinvertebrate data were used to calculate the ecological indices.The research findings showed that 27 taxa of benthic macroinvertebrates belong 10 classes were found in the three subdistrict. The pH, DO, Nitrate, TSS and TDS in six tertiary irrigation channels in Malang still met the water quality standards based on Government Regulation No.82 of 2001 on Management of Water Quality and Water Pollution Control Class III. Based on NSF-WQI indices and O'Connor's Indices, water qualities in these irrigation channels were categorized into medium or moderate (yellow) to good (green) category. However, based on benthic macroinvertebrate communities which was used to determine the HBI, the water quality in the irrigation channels were categorized into the air category (fairly significant organic pollution) to fairly poor (significant organic pollution), while based on the value of ASPT, the water were categorized into probable moderate pollution to probable severe pollution. The irrigation water which was categorized into good by WQI was consistently included into fair based on HBI and probable moderate pollution based on ASPT. Key words: ecological index, water quality index, benthic macroinvertebrate, Malang irrigation channel
Bioactivity of Citrus hystrix D.C. Leaf Extract Against Cigarette Beetle Lasioderma serricorne (F.) Ikawati, Silvi; Dhuha, Moh. Syamsu; Himawan, Toto
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.07.03.01

Abstract

The major control of pest stored Lasioderma serricorne for using synthetic pesticides, look like phosphine. Although quite effective, synthetic pesticides have a negative effect on the environment, such as pest re-sistance, deadly natural enemies, residues that are harmful to the environment and human health. The use of botanical pesticides as an alternative control be the focus this study. Botanical pesticides are selective to the target, safe for non-target insects and the environment. This research studies the repellent and fumigant activi-ty of the leaf extract of Citrus hystrix against all L. serricorne life stage. The results of GC-MS analysis of leaf crude extracts of C. hystrix with N-hexane solvent showed the highest percentage in the citronellal compound (86.43%). C. hystrix leaf extract showed stronger fumigant against pupae and eggs, compared adults, and larvae. The toxicity of the leaf extract of C. hystrix increased with increasing concentration. At a concentration of 60 ppm, fumigant activity showed the toxicity of 98.75% (pupae), 93.75% (eggs), 86.25% (adults) and 76.25% (larvae). Sequentially the LC50 value of fumigant activity from the highest to the lowest as follows; larvae 47.56 ppm, adults 43.42 ppm, eggs 31.61 and pupae 29.63 ppm. Extract of leaves of C. hystrix, have character repellent against L. serricorne. At a concentration of 60 ppm the IR value of 66% including repellent class IV, which means strong repellent level. Based on the results of the research, extracts of leaves of C. hystrix has a fumigant activity and repellent for controlling L. serricorne.
Accumulation of Calcium Crystal in Rat (Rattus norvegicus) Kidney Rosidah, A'liyatur; Widyarti, Sri; Rahayu, Sri
Journal of Tropical Life Science Vol 3, No 1 (2013)
Publisher : Journal of Tropical Life Science

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

Abstract

Spatial Variability of Fruit and Seedling Growth of Mindi (Melia azedarach L.) in Community Forest, West Java, Indonesia Irmayanti, Laswi; Siregar, Iskandar Zulkarnaen; Pamoengkas, Prijanto
Journal of Tropical Life Science Vol 5, No 3 (2015)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.05.03.09

Abstract

Mindi (Melia azedarach L.) is mostly found in community forests of West Java. One of the important factors affecting productivity of community forests is the use of quality seed. Due to scarcity of seed sources, however, seed quality is not easily available. Currently, community forests serve also as ad hoc seed sources that are usually without appropriate quality assessment. This research was aimed to determine baseline information on spatial variability of mindi fruits collected from five seed sources, and seedling growths treated in seven different growing media consisting mixtures of soil, rice husk, sand and cattle manure. Five mindi populations were selected in the following villages: Nagrak (Bogor), Babakan Rema (Kuningan), Padasari (Sumedang), Sukakarya (Bogor) and Gambung (Bandung). The results showed that variability of seed dimension (CV=4.82-14.37%) and seedling growth (11.79-21.77%) were moderate. The mindi fruits from Nagrak were found to be the biggest in terms of size (1.22 ± 0.17 cm), weight (0.40 ± 0.04 g), and seed set (85.47 ± 15.09%). In addition, the seedling growth from Nagrak was also better than those of other villages showing its potential for future seed sources. Growing media containing cattle manure were observed consistently to be the best for seedling growth. The findings are useful in supporting scientifically the selection of seed sources from community forests.
Binding Inhibition Between Igf1r and Igf1 by Catechin of Black Tea Firdausi, Lina; Indra, M Rasjad; ., fatchiyah
Journal of Tropical Life Science Vol 2, No 3 (2012)
Publisher : Journal of Tropical Life Science

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

Abstract

The natural compound of black tea is used as an alternative of obesity therapies in the world; particularly, the catechin family in tea leaves which has bioactive compounds such as EC, EGC and EGCG. Their bioactivity contributes to inhibit the ligand of Insulin-Like Growth Factor I Receptor (Igf-1r) binding-region to Igf-1 protein. To elucidate the inhibiton of Igf-1 expression and proliferating of Rattus norvegicus strain wistar adipose cell using black tea solution. The research used Rattus norvegicus strain wistar. After a 90-day treatment, the adipose tissues were picked up from the viscera of each experimental animal, and then the adipose tissues were embedded by paraffin. The paraffin sections were determined through immunohistochemistry with anti-Igf-1 antiserum, and were also analyzed through hematoxylin-eosin. A protein sequence of Igf-1, Igf-1r, and 3D structure of EC, EGC and EGCG from Gene Bank sites were used during in silico analysis. The sequences were aligned by BLAST program to identify the conserve and variable domain of IGF-1 protein isoforms. The 3D structures of IGF-1 and IGF-1R were constructed using Phyre program. The ligand among the 3D structures of IGF-1, IGF-1R and catechin compounds were analyzed using Hex 5.1 docking program. The data showed that the Igf-1 expression of adipose cells was reduced at 0,03 g/ml BTS and 0,045 g/ml BTS treatments. The result of BLAST analysis showed that IGF-1 (a, b, c, and d) isoforms conserved a domain from amino acid no 22 until 134; and this region was a variable region. The EGCG bound L1 domain of IGF-1R with E-total -235.3 KJ/mol which was lower than EC (-208,4 KJ/mol) and EGC (-142 KJ/mol). The total energy of IGF-1 (a, b, c, but not d isoform) which interacted with EGCG was around -223.7 KJ/mol, EC is -205.6 KJ/mol and EGC was -191.7 KJ/mol. However, EC, EGC and EGCG was only able to prevent the interaction between the L1 of IGF-1R with IGF-1 protein, but not the opposite.Keywords: Adipose cell, black-tea, proliferation, catechin, IGF-1, IGF-1R, inhibition, docking
Advanced Glycation End Products (AGEs) Antibody Protects Against AGEs-induced Apoptosis and NF-ĸB p65 Subunit Overexpression in Rat Glomerular Culture Adianingsih, Oktavia Rahayu; Lyrawati, Diana; Samsu, Nur
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.06.03.08

Abstract

Advanced glycation end products (AGEs) have been thought to be a major cause of diabetic nephropathy (DN). The mechanisms underlying the involvement of AGEs antibody in diabetic nephropathy are not fully understood. The present study was designed to investigate the protective effect of AGEs antibody on AGEs-induced glomerular damage. Isolated glomeruli were pre-incubated either with 10 µg/mL polyclonal anti-AGEs antibody (AGE-pAb) or monoclonal anti-Nɜ -carboxymethyl-lysine antibody (CML-mAb) as a model of AGEs antibody to block interaction of AGEs with receptor for AGEs (RAGE) and incubated afterwards either with 100 µg/mL bovine serum albumin (BSA) or AGE-modified bovine serum albumin (AGE-BSA) for 48 h. Annexin V/nephrin doublestaining was performed to determine apoptosis. Using immunofluorescence, we found that administration of AGE-BSA not only significantly increased glomerular cells apoptosis and nuclear factor kappa B (NF-ĸB) p65 expression, but also reduced expression of nephrin, an important structural and signal molecule of podocytes slit diaphragm. Blocking the interaction of AGE-RAGE with AGEs antibody significantly protected glomerular cells from AGEs-induced apoptosis and NF-ĸB p65 overexpression. We found that AGE-pAb conferred superior protective effect compared with CmL-mAb for the same reduction in apoptosis and NF-ĸB p65 expression. In sharp contrast, CmL-mAb led to preserve expression of podocytes nephrin better than AGE-pAb. These results demonstrate that the antibody against AGEs may be beneficial for preventing the glomerular damage in DN.
Classification of Fruit Flies In South Kalimantan Based on Morphology and Molecular Characters Pramudi, Muhammad Indar; Puspitarini, Retno Dyah; Rahardjo, Bambang Tri
Journal of Tropical Life Science Vol 3, No 3 (2013)
Publisher : Journal of Tropical Life Science

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

Abstract

The result of identification from assemblies trapped by methyl eugenol and collection of fruit affected fruit flies at all location, there are seven specieses of fruitfly in all locations. Based on morphological identification, which analyzed UPGMA by using the CLAD 97 program, shows that the seventh species remain one group that consists of 5 sub groups. On the other hand, according to RAPD result, which analyzed UPGMA based on 20 DNA band characters, shows that the seventh species divided into two groups. The first group consists of B. umbrosa Fabricius, B. occipitalisis Bezzi, B. latifrons Hendell sub groups. The second group consists of Bactrocera carambolae Drew and Hancock, B. papayae Drew and Hancock, and B. albistrigata de Meijere, B. cucurbitae Coquillet sub groups. Sequencing result shows that homology of seventh fruitfly species, is 83 base pairs/bp (C), 101 bp (T), 265 bp (G), 420 bp (A), 432 bp (T), 600 bp (A) (appendixes 7). The length base pair for B. occipitalis, B. cucurbitae, B. albistrigata, B. carambolae, B. papayae, B. latifrons row is 615, 898, 570, 969, and 615 bp. An analysis result of morphology feature and RAPD method show distinction in group division and sub group, but the identification morphological and DNA of the seventh species fruitfly which is found are the similar.Keywords: Fruitfly, UPGMA, Morphoogy, RAPD, DNA

Page 33 of 99 | Total Record : 986

 31   32   33   34   35 

Filter by Year

2010 2025


Reset
Filter By Issues
All Issue Vol. 15 No. 2 (2025): In Press Vol. 15 No. 1 (2025) Vol. 14 No. 3 (2024) Vol. 14 No. 3 (2024): In Press Vol. 14 No. 2 (2024) Vol. 14 No. 1 (2024) Vol. 13 No. 3 (2023) Vol. 13 No. 2 (2023) Vol. 13 No. 1 (2023) Vol. 12 No. 3 (2022) Vol. 12 No. 2 (2022) Vol. 12 No. 1 (2022) Vol 11, No 3 (2021) Vol. 11 No. 3 (2021) Vol. 11 No. 2 (2021) Vol 11, No 2 (2021) Vol 11, No 1 (2021) Vol. 11 No. 1 (2021) Vol. 10 No. 3 (2020) Vol 10, No 3 (2020) Vol 10, No 2 (2020) Vol. 10 No. 2 (2020) Vol. 10 No. 1 (2020) Vol 10, No 1 (2020) Vol 9, No 3 (2019) Vol. 9 No. 3 (2019) Vol. 9 No. 2 (2019) Vol 9, No 2 (2019) Vol. 9 No. 1 (2019) Vol 9, No 1 (2019) Vol 8, No 3 (2018) Vol. 8 No. 3 (2018) Vol 8, No 2 (2018) Vol. 8 No. 2 (2018) Vol 8, No 1 (2018) Vol. 8 No. 1 (2018) Vol 7, No 3 (2017) Vol. 7 No. 3 (2017) Vol. 7 No. 2 (2017) Vol 7, No 2 (2017) Vol 7, No 1 (2017) Vol. 7 No. 1 (2017) Vol 6, No 3 (2016) Vol. 6 No. 3 (2016) Vol 6, No 2 (2016) Vol. 6 No. 2 (2016) Vol 6, No 1 (2016) Vol. 6 No. 1 (2016) Vol. 5 No. 3 (2015) Vol 5, No 3 (2015) Vol 5, No 2 (2015) Vol. 5 No. 2 (2015) Vol. 5 No. 1 (2015) Vol 5, No 1 (2015) Vol. 4 No. 3 (2014) Vol 4, No 3 (2014) Vol. 4 No. 2 (2014) Vol 4, No 2 (2014) Vol. 4 No. 1 (2014) Vol 4, No 1 (2014) Vol 3, No 3 (2013) Vol. 3 No. 3 (2013) Vol 3, No 2 (2013) Vol. 3 No. 2 (2013) Vol. 3 No. 1 (2013) Vol 3, No 1 (2013) Vol. 2 No. 3 (2012) Vol 2, No 3 (2012) Vol 2, No 2 (2012) Vol. 2 No. 2 (2012) Vol. 2 No. 1 (2012) Vol 2, No 1 (2012) Vol 1, No 2 (2011) Vol. 1 No. 2 (2011) Vol 1, No 1 (2010) Vol. 1 No. 1 (2010) More Issue