Displaying publications 1 - 20 of 338 in total

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  1. Azma Hanim Ismail, Anis Amalina Mohd Adnan
    Trop Life Sci Res, 2016;27(11):31-38.
    MyJurnal
    The distribution and abundance of zooplankton species of Harapan and Aman
    Lakes were investigated in relation to physical parameters and chlorophyll-a content. Both
    lakes were characterised by the occurrence of algal bloom problem. The composition of
    zooplankton was collected at monthly intervals from November 2013 to February 2014.
    The total number of taxa in Harapan and Aman Lakes were 23 and 27, respectively.
    Rotifera was the highest abundance group represent 64% of the total species recorded
    followed by Copepoda (29%) and Cladocera (7%). Three dominant zooplankton that been
    recorded in both the lakes are Brachionus forficula, Brachionus nilsoni, and Trichocerca
    sp. High abundance of these species indicates that the lakes are eutrophic water bodies.
    Overall, zooplankton species distribution and abundance in the study sites are influenced
    by various environmental factors such as water transparency and chlorophyll-a content.
  2. Pramithasari FA, Butet NA, Wardiatno Y
    Trop Life Sci Res, 2017 Jan;28(1):103-115.
    PMID: 28228919 DOI: 10.21315/tlsr2017.28.1.7
    Variation in morphometric characters in four sand crab (Albunea symmysta) populations from four intertidal areas in Sumatra (Aceh and Bengkulu) and Java (Cilacap and Yogyakarta) were studied. Crabs collected from the four sites were measured to obtain 10 morphometric characters, i.e., carapace length (CL), carapace width (CW), ocular peduncle length and width (LOP and WOP), telson length and width (LT and WT), merus length (ML), carpus length (CaL), propodus length (PL), and dactylus length (DL). Allometric relationships were established among three morphometric characters (CW, PL, and DL) for each site, in which CL was fixed on the abscissa as a reference variable. The analysis of covariance showed that population from Yogyakarta had a greater carapace width and the Aceh population had a longer dactylus length. In terms of propodus length, the Aceh population had a longer dactylus length than the Bengkulu population. Two group populations were detected by cluster analysis with 10 morphometric characters, i.e., the Sumatra population and the Java population.
  3. Rusnam, Puari AT, Yanti NR, Efrizal
    Trop Life Sci Res, 2022 Sep;33(3):229-252.
    PMID: 36545053 DOI: 10.21315/tlsr2022.33.3.12
    This study utilised a bio-sorbent from exhausted coffee husk (ECHBS) for the removal of ion Pb2+ from an aqueous solution. Four different activation methods were conducted by chemical activation with KOH, H3PO4, ZnCl2, and without chemical activation. In addition, the influence of process parameters such as heating temperature, heating time and heating gradient were investigated. Based on the experimental results, ECHBS without chemical activation (biochar) had the highest Pb2+ ion removal efficiency. The results showed that the heating temperature of 500°C, the heating time of 60 min and the heating rate of 15°C/min were optimum for preparation of the biochar. Under the optimum conditions, the removal efficiency and adsorption capacity reached 99% and 3.3 mg/g, respectively. The experimental data indicated that the adsorption isotherms are well fitted with the Langmuir Equilibrium isotherm model. Furthermore, the adsorption of the biochar follows the pseudo-second-order model. The result obtained from the present study confirmed that exhausted coffee husk is a suitable low-cost bio-sorbent for removing ion Pb2+.
  4. Rosli NRM, Yahya K
    Trop Life Sci Res, 2017 Jul;28(2):189-199.
    PMID: 28890770 MyJurnal DOI: 10.21315/tlsr2017.28.2.14
    The study of river water quality plays an important role in assessing the pollution status and health of the water bodies. Human-induced activities such as domestic activities, aquaculture, agriculture and industries have detrimentally affected the river water quality. Pinang River is one of the important rivers in Balik Pulau District that supplies freshwater for human consumption. A total of 442 physical and chemical parameters data of the Pinang River, Balik Pulau catchment were analysed to determine the sources of pollutants entering the river. Non-supervised artificial neural network (ANN) was employed to classify and cluster the river into upstream, middle-stream and downstream zones. The monitored data and non-supervised ANN analysis demonstrated that the source of nitrate was derived from the upper part of the Pinang River, Balik Pulau while the sources of nitrite, ammonia and ortho-phosphate are predominant at the middle-stream of the river system. Meanwhile, the sources of high total suspended solid and biological oxygen demand were concentrated at the downstream of the river.
  5. Wiafe-Kwagyan M, Odamtten GT
    Trop Life Sci Res, 2018 Mar;29(1):173-194.
    PMID: 29644023 DOI: 10.21315/tlsr2018.29.1.12
    The objective of this study was to investigate the influence of spent mushroom compost of Pleurotus eous strain P-31 on the growth and yield performance of pepper and tomato seedlings under greenhouse conditions. Sandy loam soil was combined with different percentages of SMC to obtain the following combinations (0, 5, 10, 15, 20, 25 and 30) %. Lower concentrations SMC5, SMC10 and SMC15 promoted vegetative growth (plant height, leaf area, chlorophyll content, number of leaves and axillary branches) of the two test plants. Tomato seedlings grown in SMC10 recorded the highest plant height (50.3 ± 7.2cm); leaf area (378.8 ± 1.2cm2); number of floral buds (51) and flowers (28) whereas SMC5 recorded the highest chlorophyll content 34.1 ± 0.9CCI though SMC15 recorded the highest number of leaves (8). Tomato seedlings grown in SMC30 produced both the maximum number of fruits (8) with corresponding high weight (34.2 ± 7.7g). Pepper seedlings grown in lower concentrations (SMC5-15) recorded the highest plant heights (29.8-30.8cm), chlorophyll content (20.3CCI) and leaf area (53.5-66.2 cm2). Although the different combinations of sandy loam soil and SMC did not significantly (p ≥ 0.05) affect the number of axillary branches developed; different combinations significantly (p ≤ 0.05) affected the number of floral bud, flower and fruit, weight of fruits formed and value of each of these increased with increasing percentage of SMC. Pepper seedlings grown on SMC30 recorded the maximum number of floral buds (32.0 ± 3.6), number of flowers (19.4 ± 1.3), number of fruits (10.8 ± 1.2) and weight of fruits (31.9 ± 3.4g). Tomato seedlings raised on SMC100 (spent mushroom compost only) and soil only did not significantly (p ≥ 0.05) differ from each other however, was statistically significant (p ≤ 0.05) from amended sandy loam soil by all criteria investigated. The study shows that SMC provide favourable soil conditioners for the cultivation of fruits, vegetables and foliage crops as it improved growth and yield of tomato and pepper seedlings.
  6. Radhamany D, Das KS, Azeez PA, Wen L, Sreekala LK
    Trop Life Sci Res, 2016 Aug;27(2):127-34.
    PMID: 27688856 DOI: 10.21315/tlsr2016.27.2.10
    The house sparrow (Passer domesticus) is a widely distributed bird species found throughout the world. Being a species which has close association with humans, they chiefly nest on man-made structures. Here we describe the materials used by the house sparrow for making nests along an urban to rural gradient. For the current study, we selected the Coimbatore to Anaikatty road (State Highway-164), a 27 km inter-state highway, which traverses along an urban core to rural outstretch of Coimbatore. Of the 30 nests observed, 15 nests were from the rural, 8 were from the suburban, and 7 were from the urban areas. The nests had two distinct layers, specifically the structural layer and the inner lining. In the current study, we identified 11 plant species, 2 types of animal matter, and 6 types of anthropogenic matter, including plastic pieces and fine rope. The amount of anthropogenic materials in the nest formation varied along the gradients. The usage of anthropogenic materials was high in urban areas (p<0.05) whereas it did not differ at the sub-urban regions (p>0.05). A gradual decrease in the usage of plant matter towards the urban area was noticed (p<0.05). This study explicitly documents the links between nest material usage along an urban to rural gradient, in a human associated bird.
  7. Rahim NAA, Mohd Sidik Merican FM, Radzi R, Omar WMW, Nor SAM, Broady P, et al.
    Trop Life Sci Res, 2023 Sep;34(3):57-94.
    PMID: 37860087 DOI: 10.21315/tlsr2023.34.3.4
    Cyanobacteria are one of the most important groups of photoautotrophic organisms, contributing to carbon and nitrogen fixation in mangroves worldwide. They also play an important role in soil retention and stabilisation and contribute to high plant productivity through their secretion of plant growth-promoting substances. However, their diversity and distribution in Malaysian mangrove ecosystems have yet to be studied in detail, despite Malaysia hosting a significant element of remaining mangroves globally. In a floristic survey conducted in Penang, peninsular Malaysia, 33 morphospecies of periphytic cyanobacteria were identified and described for the first time from a mangrove ecosystem in Malaysia. Sixteen genera, comprising Aphanocapsa, Chroococcus, Chroococcidiopsis, Cyanobacterium, Desmonostoc, Geitlerinema, Leptolyngbya, Lyngbya, Microcystis, Myxosarcina, Oscillatoria, Phormidium, Pseudanabaena, Spirulina, Trichocoleus and Xenococcus, were obtained from field material growing on diverse natural and artificial substrata. Oscillatoriales was the dominant order with Phormidium the dominant genus at nine of the 15 sampling sites examined. Three of the morphospecies, Aphanocapsa cf. concharum, Xenococcus cf. pallidus and Oscillatoria pseudocurviceps, are rare and poorly known morphospecies worldwide. Chroococcus minutus, Phormidium uncinatum, P. amphigranulata, and some species of Oscillatoriales are considered as pollution indicator species. This study provides important baseline information for further investigation of the cyanobacterial microflora present in other mangrove areas around Malaysia. A complete checklist will enhance understanding of their ecological role and the potential for benefits arising from useful secondary metabolites or threats via toxin production to the ecosystem.
  8. Ting A, Abidin CMRZ, Hamid NH, Azzam G, Salim H
    Trop Life Sci Res, 2023 Mar;34(1):185-218.
    PMID: 37065800 DOI: 10.21315/tlsr2023.34.1.11
    Bagworm Metisa plana is one of the major pests in Malaysia's oil palm plantation, with infestation resulting in huge economical loss. Currently, the microbial profile of the bagworm has yet to be study. Understanding the biology of the pest such as the bacterial community is crucial as bacteria associated with insects often provide benefits to the insect, giving the insect host a better chance of survival. Here, 16S amplicon sequencing was used to identify the bacteria community of M. plana. Additionally, two comparisons were made, the bacterial communities between two larval stages (early instar stage and late instar stage) from outbreak area; the bacterial communities of late instar stage larvae from non-outbreak between outbreak areas. From this study, it was found that the bacterial community of M. plana consisted of Proteobacteria, Actinobacteria, Bacterioidetes, Firmicutes and other minor phyla, with Proteobacteria being the most dominant phylum. Furthermore, bacterial genera of M. plana consisted of Pantoea, Curtobacterium, Pseudomonas, Massilia and other minor genera, with Pantoea being the most dominant. It was also found that the alpha and beta diversity in both comparisons were not significantly different. We present our data as a first insight towards the bacterial community of M. plana, paving a way towards understanding the biology of the bagworm M. plana.
  9. Chaturvedi D, Singh VK
    Trop Life Sci Res, 2016 Aug;27(2):25-36.
    PMID: 27688849 DOI: 10.21315/tlsr2016.27.2.3
    Fasciolosis is a water and food-borne disease caused by the liver fluke Fasciola hepatica and Fasciola gigantica. This disease is widespread in different parts of the world. Lymnaeidae and Planorbidae snails are the intermediate hosts of these flukes. Snail population management is a good tool to control fasciolosis because gastropods represent the weakest link in the life-cycle of trematodes. Chlorophyll can be extracted from any green plant. Chlorophyllin was prepared from spinach in 100% ethanol by using different types of chemicals. The chlorophyll obtained from spinach was transformed into water-soluble chlorophyllin. In the present paper, toxicity of chlorophyllin against the snail Lymnaea acuminata was time and concentration dependent. The toxicity of extracted and pure chlorophyllin at continuous 4 h exposure of sunlight was highest with lethal concentration (LC50) of 331.01 mg/L and 2.60 mg/L, respectively, than discontinuous exposure of sunlight up to 8 h with LC50 of 357.04 mg/L and 4.94 mg/L, respectively. Toxicity of extracted chlorophyllin was noted in the presence of different monochromatic visible lights. The highest toxicity was noted in yellow light (96 h, LC50 392.77 mg/L) and the lowest in green light (96 h, LC50 833.02 mg/L). Chlorophyllin in combination with solar radiation or different wavelength of monochromatic visible lights may become a latent remedy against the snail L. acuminata. It was demonstrated that chlorophyllin was more toxic in sunlight. Chlorophyllin is ecologically safe and more economical than synthetic molluscicides which have the potential to control the incidence of fasciolosis in developing countries.
  10. Zainal Baharum, Abdah Md Akim, Roslida Abdul Hamid, Taufiq Yap Yun Hin, Rosmin Kasran
    Trop Life Sci Res, 2016;27(1):21-42.
    MyJurnal
    Plants have been a good source of therapeutic agents for thousands of years;
    an impressive number of modern drugs used for treating human diseases are derived from
    natural sources. The Theobroma cacao tree, or cocoa, has recently garnered increasing
    attention and become the subject of research due to its antioxidant properties, which are
    related to potential anti-cancer effects. In the past few years, identifying and developing
    active compounds or extracts from the cocoa bean that might exert anti-cancer effects
    have become an important area of health- and biomedicine-related research. This review
    provides an updated overview of T. cacao in terms of its potential anti-cancer compounds
    and their extraction, in vitro bioassay, purification, and identification. This article also
    discusses the advantages and disadvantages of the techniques described and reviews the
    processes for future perspectives of analytical methods from the viewpoint of anti-cancer
    compound discovery.
  11. Ramli S, Ismail N, Alkarkhi AF, Easa AM
    Trop Life Sci Res, 2010 Aug;21(1):91-100.
    PMID: 24575193 MyJurnal
    Banana peel flour (BPF) prepared from green or ripe Cavendish and Dream banana fruits were assessed for their total starch (TS), digestible starch (DS), resistant starch (RS), total dietary fibre (TDF), soluble dietary fibre (SDF) and insoluble dietary fibre (IDF). Principal component analysis (PCA) identified that only 1 component was responsible for 93.74% of the total variance in the starch and dietary fibre components that differentiated ripe and green banana flours. Cluster analysis (CA) applied to similar data obtained two statistically significant clusters (green and ripe bananas) to indicate difference in behaviours according to the stages of ripeness based on starch and dietary fibre components. We concluded that the starch and dietary fibre components could be used to discriminate between flours prepared from peels obtained from fruits of different ripeness. The results were also suggestive of the potential of green and ripe BPF as functional ingredients in food.
  12. Aliakbarpour H, Rawi CS
    Trop Life Sci Res, 2012 May;23(1):45-61.
    PMID: 24575225 MyJurnal
    A field study was conducted at two localities on Pulau Pinang, Malaysia, during two consecutive mango flowering seasons in 2009 to identify variations in the species composition of thrips infesting treated and untreated mango (Mangifera indica L.) orchards. The CO2 immobilisation technique and the cutting method were used to recover different thrips species from mango panicles and weed host plants, respectively. The mango panicles and various weed species within the treated orchard were found to harbour four thrips species from the family Thripidae. These species were identified as Thrips hawaiiensis (Morgan), Scirtothrips dorsalis (Hood), Frankliniella schultzei (Trybom) and Megalurothrips usitatus (Bagnall). The weed species Mimosa pudica, Cleome rutidosperma, Echinochloa colonum, Borreria laevicaulis, Veronia cinerea and Asystasia coromandeliana served as additional hosts to these thrips. Six thrips species were found in the untreated orchard. These species included Thrips palmi (Karny), Haplothrips sp. (Amyot and Serville) and the four thrips species found in the treated orchard. A brief description of the larvae for each genus is provided.
  13. Zainalabidin FA, Raimy N, Yaacob MH, Musbah A, Bathmanaban P, Ismail EA, et al.
    Trop Life Sci Res, 2015 Apr;26(1):1-8.
    PMID: 26019746 MyJurnal
    Helminthiasis due to strongyles such as Haemonchus contortus, coccidiosis caused by Eimeria sp. and blood parasite diseases such as theileriosis by Theileria sp. have been reported to cause severe morbidity and mortality annually in small ruminants in Malaysia. The aims of this study were to investigate the prevalence of helminthiasis, coccidiosis and theileriosis and to determine the packed cell volume (PCV) value of small ruminants in Perak, Malaysia. Blood and faecal samples were obtained from a total of 175 animals from 7 small ruminant farms in Kampar, Larut Matang and Selama, Kuala Kangsar and Manjung districts in Perak; the samples were examined for parasitic infestations from April to July 2011. The results of this study show that H. contortus was found in 152 (86.86%) animals, Eimeria sp. was found in 162 (92.57%) animals and the blood protozoa Theileria sp. was found in 25 (14.30%) animals. The PCV values of all of these animals were recorded between 7% and 44%. A total of 42 (24%) animals were anaemic, with a PCV of less than 21%. Continuous monitoring of small ruminant farms will provide important information for assisting farmers with managing the spread of parasitic infections and maintaining the productivity of animals.
  14. Ismail, B.S., Mohammed Abu Bakar Siddique
    Trop Life Sci Res, 2011;22(1):-.
    MyJurnal
    Experiments were carried out in the laboratory and greenhouse to determine the growth inhibitory effects of Grassohopper’s cyperus (Cyperus iria L.) on the seedlings of 5 Malaysian rice varieties namely MR211, MRQ74, MR220, MR84 and MR232. Three concentrations of the aqueous extract of the weed (12.5, 25.0 and 50.0 g/l) and weed debris (5, 10 and 20 g dry debris/1000 g soil) were used to test the allelopathic effect of
    C. iria on the growth of the rice plants. The weed leaf, stem and root extracts reduced the growth of the rice seedlings and showed selective activity in the varieties. The C. iria leaf and stem extracts showed comparatively higher growth inhibitory effects than those from the root. The weed extract caused more reduction in the root length of the rice plant compared to the shoot length. Among the rice varieties tested, MR232 was found to be more susceptible to the weed inhibitory effect. The leaf extract of C. iria at full strength caused root and shoot reduction of MR232 by 88.1% and 73.1% respectively (compared to the control). In most cases the fresh weight of the rice seedlings were more affected than the plant height. Weed debris caused significant reduction of leaf chlorophyll content in all the rice varieties tested with the exception of MR211. The chlorophyll content of MR232 was greatly affected by the weed debris which caused reduction of 36.4% compared to the control. The inhibitory effects of weed extracts and debris on rice growth
    parameters were found to be concentration dependent.
  15. Mansor MS, Sah SA
    Trop Life Sci Res, 2012 May;23(1):1-14.
    PMID: 24575221 MyJurnal
    Bird surveys were conducted in the Bukit Kepala Gajah limestone area in Lenggong, Perak from July 2010 to January 2011. The study area was divided into three zones: forest edge, forest intermediate and forest interior. A point-count distance sampling method was used in the bird surveys. The study recorded 7789 detections, representing 100 bird species belonging to 28 families. Pycnonotidae, Timaliidae and Nectariniidae were the dominant families overall and showed the highest number of observations recorded in the study area whereas Motacillidae showed the fewest observations. The bird species were grouped into three feeding guilds: insectivores, frugivores and others (omnivores, carnivores, nectarivores and granivores). The species richness of insectivorous birds differed significantly among the forest zones sampled (Kruskal-Wallis: α=0.05, H=10.979, d.f.=2, p=0.004), with more insectivorous birds occurring in the forest interior. No significant differences were found among the zones in the species richness of either the frugivore guild or the composite others guild.
  16. Mahadi Mohammad, Zaharatul Naa'imah Apandi, Hana Abdul Wahab Marican, Kamphol, Nadthikphorn, Nur Ain Amani Abdul Mubin, Sazlina Salleh, et al.
    Trop Life Sci Res, 2016;27(11):87-93.
    MyJurnal
    Coral reefs in the northern region of the Straits of Malacca have a diverse group
    of octocorals growing on its bed. The octocorals identified in this study are from islands
    along the Straits. In this study, 23 specimens were identified, belonging to 4 sub-orders,
    which have been subdivided into 8 families. From these 8 families, 15 different genera
    have been identified. The identification process for this research was conducted based on
    five important keys; the external form and colouration, polyps or colonial and fundamental
    structure of colonies, monomorphic or dimorphic, the arrangement of polyps, and the
    arrangement of sclerites.
  17. Chang, Geraldine Olive Ju Lien, Lai, Ven Inn, Tan, Aileen Shau Hwai, Zulfigar Yasin
    Trop Life Sci Res, 2016;27(11):45-51.
    MyJurnal
    A small scale laboratory study was conducted to determine the effects of
    salinity ranging from 15, 20, 25, 30, 35, 40, and 45 ppt on the filtration rates of juvenile
    oyster Crassostrea iredalei with 25 ppt as the control. Three juvenile oysters (shell weight:
    1.04 ± 0.12 g; shell length: 1.9 ± 0.2 cm; shell height: 1.9 ± 0.1 cm) were used to test the
    filtration rates in each salinity over the course of 8 hours. The hourly filtration rates were
    determined from the exponential decrease in algal (Chaetoceros calcitrans) concentration
    as a function of time. The oyster in 35 ppt salinity produced the highest overall filtration
    rate (FR2) with 134.06 ± 15.66 mL–1 hr–1 oyster–1 and the lowest overall filtration rate (FR2)
    occurred in oyster exposed to 15 ppt and 45 ppt with 31.30 ± 6.90 mL–1 hr–1 oyster–1 and
    32.11 ± 7.68 mL–1 hr–1 oyster–1
    respectively throughout the 8 hours. The result from this
    study can be useful for optimum oyster culturing and the oysters can be employed as a
    natural biofilter in marine polyculture farming.
  18. Sufian Maryam, Nik Fadzly, Wan Fatma Zuharah
    Trop Life Sci Res, 2016;27(11):95-101.
    MyJurnal
    Paederus fuscipes Curtis is a nocturnal insect. The attractiveness of artificial
    light sources from residential premises eventually causes the risk of severe dermatitis
    effect, once Paederus is in contact with human skin. The objective of this study is to
    investigate whether the light and height factors of residential buildings and its’ association
    to rice cultivation phases are primary reasons for P. fuscipes’s mass dispersal into human
    residential areas. The study site was located in residential premises that were built
    adjacent to rice field areas (≈ 32–60 m and 164 m) north of the rice field located in Teluk
    Air Tawar, mainland of Pulau Pinang. Overall, both light sources and rice cultivation
    phases caused a significant effect for P. fuscipes beetles dispersal flight to invade human
    settlements. More P. fuscipes were captured near the bright light source with the highest
    number of beetles found during harvesting stage. Whereas, significantly higher number of
    P. fuscipes were captured at level 2 and 3 compared to ground and level 1 of the
    apartment building and P. fuscipes was also found significantly affected by the rice
    cultivation phases at different elevation levels. This indicates that bright light sources and
    higher elevation levels are the main factors in attracting P. fuscipes beetles to disperse
    and causes infestations in residential areas. This finding could create awareness among
    the public on P. fuscipes dispersal pattern.
  19. Siswanto, Rita Muhamad, Dzolkhifli Omar, Elna Karmawati
    Trop Life Sci Res, 2009;20(1):-.
    MyJurnal
    Helopeltis antonii is the major pest affecting cashew plants in Indonesia and causes potential damage to the plant. The development of the population was influenced by the fecundity and fertility of their eggs. The effect of mating on the eggs’ fecundity and the fertility of H. antonii was studied. Laboratory studies at Wonogiri Estate Service in Ngadirojo District, Wonogiri, Indonesia investigated the sexual maturity, the influence of female to male sex ratio on the females’ fecundity and longevity, and the influence of mating frequency to fecundity and the eggs hatchability of H. antonii. The study reveals that H. antonii females and males are ready to mate when they are two days old. The number of eggs laid and the longevity of the females’ lives were not significantly affected by the sex ratio; however, female to male sex ratios of 2:1 and 1:2 tended to produce a greater number of eggs. The fecundity of the female was not significantly influenced by the number of times the female mated. Unmated females laid fewer eggs than females paired with a mature male. The study shows that females need to mate to produce fertile eggs.
  20. Mariani Mohd Zain, Zary Shariman Yahaya, Nik Ahmad Irwan Izzauddin Nik Him
    Trop Life Sci Res, 2016;27(11):3-8.
    MyJurnal
    To date, the ivermectin resistance in nematode parasites has been reported
    and many studies are carried out to determine the causes of this problem. A free-living
    Caenorhabditis elegans is used as a model system for this study to investigate the
    response of C. elegans to ivermectin exposure by using larval development assay. Worms
    were exposed to ivermectin at concentration from 1 ng/mL to 10 ng/mL and dimethyl
    sulphoxide (DMSO) as a control. The developments of the worms were monitored for 24,
    48, 72, and 96 hours until the worms become adults. Results indicated that worms’ growth
    began to be affected by ivermectin at a concentration of 5 ng/mL, while at the
    concentration of 6, 7, 8, 9, and 10 ng/mL, the growth of worms were inhibited compared to
    control worms. Further study of the protein expression in C. elegans should be done to
    investigate the up-regulated and down-regulated proteins involve in ivermectin resistance.
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