Borneo Journal of Resource Science and Technology最新文献_第10页

Detection of Cholera Toxin-Producing Vibrio cholerae in Phytoplankton from Santubong and Samariang Estuaries 三土峰河口和三良河口浮游植物中霍乱产毒弧菌的检测

Borneo Journal of Resource Science and Technology Pub Date : 2019-06-30 DOI: 10.33736/BJRST.1584.2019

L. Bilung, Mintra Prommani Etriam, A. S. Tahar, Teng Sing Tung, K. Apun

{"title":"Detection of Cholera Toxin-Producing Vibrio cholerae in Phytoplankton from Santubong and Samariang Estuaries","authors":"L. Bilung, Mintra Prommani Etriam, A. S. Tahar, Teng Sing Tung, K. Apun","doi":"10.33736/BJRST.1584.2019","DOIUrl":"https://doi.org/10.33736/BJRST.1584.2019","url":null,"abstract":"Many cholera outbreaks worldwide were associated with cholera toxin-producing Vibrio cholerae. The bacteria are ubiquitous in aquatic environment, whilst phytoplankton is associated with adaptation of the Vibrio species. This study was conducted to detect cholera toxin-producing Vibrio cholerae, and to determine association of the selected water physicochemical parameters with the number of the bacteria. In this study, a total of ten phytoplankton samples were collected at Santubong and Samariang Estuaries in Kuching, Sarawak. Water physicochemical parameters (temperature, pH and salinity) were recorded. Vibrio bacteria were cultivated on thiosulfate citrate bile-salts sucrose selective agar and analysed for cholera toxin-producing Vibrio cholerae using polymerase chain reaction by targeting ctxA gene that encodes for virulence cholera enterotoxin subunit A. The result revealed that a range of 1.0 × 107 – 8.0 × 107 CFU/ml of yellow colonies growing on the thiosulfate citrate bile-salts sucrose agars. Inversely, no samples were positive with cholera toxin-producing Vibrio cholerae. The physicochemical parameters at Samariang Estuary were more associated with the number of bacteria in the samples compared to Santubong Estuary.","PeriodicalId":32107,"journal":{"name":"Borneo Journal of Resource Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44118152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Brine Shrimp Toxicity of Essential Oils from Musa spp. 穆萨精油对卤虾的毒性研究。

Borneo Journal of Resource Science and Technology Pub Date : 2019-06-30 DOI: 10.33736/BJRST.1585.2019

M. Zailani, Abdul Razzak Fikri Sharkawi

{"title":"Brine Shrimp Toxicity of Essential Oils from Musa spp.","authors":"M. Zailani, Abdul Razzak Fikri Sharkawi","doi":"10.33736/BJRST.1585.2019","DOIUrl":"https://doi.org/10.33736/BJRST.1585.2019","url":null,"abstract":"Essential oils of seven Musa spp.’s fruits namely, Musa acuminata colla ‘gros michel’ (PE), Musa acuminata colla ‘lakatan’ (PB), Musa acuminata colla ‘sucrier’ (PM), Musa acuminata × balbisiana ‘horn plantain’ (PT), Musa acuminata × balbisiana colla ‘saba’ (PN), Musa acuminata colla 'inarnibal' (PO) and Musa acuminata colla ‘red’ (PJ) were extracted by hydrodistillation method using Clevenger apparatus. The essential oils were analysed using GC-FID and identified using Kovat Indeces compared with published information. PE gave the highest yields of oils compared to the other species with yield of 0.43% and 0.28% for its peels and flesh, respectively. The most abundant groups present in most of the essential oils are ester and alcohol groups. The brine shrimp toxicity of PT, PM, PN and PO essential oils were tested and showed toxicity against brine shrimp in dose dependent manner. It can be concluded that the essential oils showed some biological activities which may be a potent medicine in curing tumor. This study implies that the presence of ester and alcohol groups are a good marker for the biological activities of plants. Further studies should focus on the potential of the essential oils of Musa spp. as an antitumor medicine.","PeriodicalId":32107,"journal":{"name":"Borneo Journal of Resource Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43848361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Annual Pattern on Abundance and Sex Ratio Distribution of Selected Fish Fauna of Ikere Gorge Reservoir, Oyo State, Nigeria 尼日利亚奥约州Ikere峡谷水库鱼类种群丰度和性别比例年分布格局

Borneo Journal of Resource Science and Technology Pub Date : 2019-06-26 DOI: 10.33736/BJRST.1580.2019

F. I. Adeosun

{"title":"Annual Pattern on Abundance and Sex Ratio Distribution of Selected Fish Fauna of Ikere Gorge Reservoir, Oyo State, Nigeria","authors":"F. I. Adeosun","doi":"10.33736/BJRST.1580.2019","DOIUrl":"https://doi.org/10.33736/BJRST.1580.2019","url":null,"abstract":"Sex ratio affects the growth of wild population, thus, with the declining wild fish population, the study was designed to determine the effect of seasons on the sex ratio of fish population from Ikere Gorge, Nigeria for 18 months. Fish composition, diversity, distribution and abundance were determined according to standard methods. Sexes were determined and sex ratio was calculated using a standard method. A total of 5,823 fish specimens were caught during the period. The captured fish species were identified and classified into 34 species belonging to 13 families. The species richness was higher in the dry months than in the wet months. Fish diversity indices and evenness revealed a better diverse and even ecosystem in the wet season than the dry season. A marked significant difference (p < 0.05) was observed between the species in the dry months than the wet season. Chrysichthyes nigrodigitatus (35.07±7.59a) was significantly (p < 0.05) more abundant than the other species in the dry season. The sex ratio was skewed in favour of the female populations for C. nigrodigitatus, Tilapia melanopleura and Sarotherodon galilaeus but the reverse was the case for L. niloticus population. No monthly variation was observed in sex ratio of the species. The fish fauna from Ikere Gorge showed marked variations in the catch composition between the dry and wet months. C. nigrodigitatus and the Cichlids (Hemichromis fasciatus, S. galilaeus, Tilapia macrocephla and T. melanopleura) were present all year.","PeriodicalId":32107,"journal":{"name":"Borneo Journal of Resource Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42090243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fish Assemblages, Growth Pattern and Environmental Factors in Upper Baleh River, Kapit, Sarawak 沙捞越加庇巴利河上游鱼类群落、生长格局及环境因素

Borneo Journal of Resource Science and Technology Pub Date : 2019-06-26 DOI: 10.33736/BJRST.1581.2019

L. Nyanti, N. Idris, Hafida Bolhen, J. Grinang, T. Ling, S. Sim, C. Soo, T. Ganyai, Karen Lee Suan Ping

{"title":"Fish Assemblages, Growth Pattern and Environmental Factors in Upper Baleh River, Kapit, Sarawak","authors":"L. Nyanti, N. Idris, Hafida Bolhen, J. Grinang, T. Ling, S. Sim, C. Soo, T. Ganyai, Karen Lee Suan Ping","doi":"10.33736/BJRST.1581.2019","DOIUrl":"https://doi.org/10.33736/BJRST.1581.2019","url":null,"abstract":"A survey of the freshwater fish composition in the upper Baleh River, Sarawak was conducted in 2015. A total of 1,538 specimens, comprising 45 species from nine families were collected using electrofishing devices and cast nets. The family Cyprinidae was the most dominant (62.9%) as well as diverse (42.2%) family, followed by the Balitoridae (31.0%; 31.1%) in the river. The three most dominant species were Tor tambra (18.1%), Lobocheilos ovalis (12.9%), and Parhomaloptera microstoma (11.3%). Shannon’s diversity index, Margalef’s richness index, and Pielou’s evenness index were 2.9, 6.0, and 0.8, respectively, an indication of moderate species diversity. Canonical Correspondence Analysis demonstrate that elevation, stream order and sedimentation were the most significant factors related to fish assemblages in the river, particularly for members of the families Cyprinidae and Balitoridae. The coefficient ‘n’ value in length-weight relationship for T. tambra, L. ovalis, and P. microstoma were determined as 2.92, 2.72, and 3.15, respectively. T. tambra and L. ovalis exhibited a negative allometric growth pattern which could be due to food competition whereas P. microstoma exhibited a positive allometric growth pattern as mountainous forest stream habitat offers favourable environmental conditions. The Fulton’s condition factor of each species indicates that T. tambra and L. ovalis were in poor condition, whereas P. microstoma was in extremely poor condition. It is hypothesized that environmental degradation caused by logging activities have affected the health of the most dominant fish species in the upper Baleh River. Further study should be conducted to determine the underlying factors that are affecting the fish diversity.","PeriodicalId":32107,"journal":{"name":"Borneo Journal of Resource Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69674003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Antifungal Properties of Selected Medicinal Plant Species Against Fusarium spp. – A Preliminary Study 几种药用植物抗镰刀菌的初步研究

Borneo Journal of Resource Science and Technology Pub Date : 2018-12-25 DOI: 10.33736/bjrst.1202.2018

Izza Nadira Abu Bakar, A. Razak, Muhammad Nur Hakim Zulkifle, Nur Aliah Rosli, Y. San

{"title":"Antifungal Properties of Selected Medicinal Plant Species Against Fusarium spp. – A Preliminary Study","authors":"Izza Nadira Abu Bakar, A. Razak, Muhammad Nur Hakim Zulkifle, Nur Aliah Rosli, Y. San","doi":"10.33736/bjrst.1202.2018","DOIUrl":"https://doi.org/10.33736/bjrst.1202.2018","url":null,"abstract":"Usage of synthetic fungicides has inevitably been one of the agricultural practices in combating crop pathogens and maintaining the quality of production. Although fungicides have been proven to be profoundly effective, excessive and frequent reliance on these synthetic fungicides have caused negative impacts to the environment and human health. Besides that, indiscriminate use of fungicides may lead to the development of resistant strains of pathogenic fungi. The need to find an alternative solution to synthetic fungicides has led to the interest in finding plant-based fungicides. This study aimed to test the antifungal properties of plant extracts from 13 different medicinal plant species towards plant pathogenic fungi. Absolute methanol was used as a solvent to extract the secondary metabolites from the different plant species. The effect of methanolic crude extract at different concentrations (500 g/ml, 250 g/ml and 100 g/ml), from different medicinal plant species, were tested on the growth of two Fusarium spp., FsB and FsP. The assay showed that the methanolic crude extract from six plant species viz. Alpinia galanga, Annona muricata, Archidendron jiringa, Nephelium lappaceum, Polygonum minus and Artocarpus hybrid (Nanchem) had successfully inhibit the radial mycelial growth of either FsB or FsP, or both. The assay suggested that the six plant species have antifungal properties towards the crop pathogenic fungi tested. \u0000Keywords: antimicrobial, Fusarium, plant extracts, methanolic extracts, biofungicides","PeriodicalId":32107,"journal":{"name":"Borneo Journal of Resource Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43067170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Geology of Upper Baleh River, Kapit, Sarawak 砂拉越Kapit Baleh河上游地质

Borneo Journal of Resource Science and Technology Pub Date : 2018-12-25 DOI: 10.33736/bjrst.1220.2018

E. Muol, G. Noweg

引用次数: 2

Avifauna in Logged-Over Forest of Upper Baleh, Sarawak 沙捞越上巴利省砍伐过的森林中的鸟类

Borneo Journal of Resource Science and Technology Pub Date : 2018-12-25 DOI: 10.33736/BJRST.1197.2018

A. Tuen, Attiqqah Fadziliah Sapian, Khatijah Ismail, Cindy Peter, Mohd Hasri Al-Hafiz Haba, C. C. Lee

{"title":"Avifauna in Logged-Over Forest of Upper Baleh, Sarawak","authors":"A. Tuen, Attiqqah Fadziliah Sapian, Khatijah Ismail, Cindy Peter, Mohd Hasri Al-Hafiz Haba, C. C. Lee","doi":"10.33736/BJRST.1197.2018","DOIUrl":"https://doi.org/10.33736/BJRST.1197.2018","url":null,"abstract":"Commercial logging is a major economic activity in the Upper Baleh catchment, Sarawak, so logged-over forest is the dominant forest type there. Avifauna survey was conducted in the logged-over forest of Upper Baleh in November 2015 as part of the Upper Baleh Heart of Borneo Expedition. The objective of the survey was to collect baseline data on the avifauna species that inhabit the study area, their conservation status and feeding guilds. Both mist-net and observation method were used. A total of 95 species of birds was recorded: 36 species via mist-nets and 69 species via observation. Little spiderhunter was the dominant species, accounting for 33% of mist-netted bird. Seven species are Totally Protected including six species of hornbills and a Great Argus Pheasant, while 18 other species are Protected under the Sarawak Wild Life Ordinance 1998. The majority of the birds are insectivorous (55.8%), foraging either at ground level (babblers), along the tree trunks or branches (woodpeckers) or at the canopy (flycatchers). Omnivorous birds, which feed on two or more types of diet, accounted for 48.4% of the avifauna species recorded and these include bulbuls and hornbills. The diverse community of bird, including the protected species, makes the area an attractive birding destination for visitors since now part of the catchment has been gazetted as a national park. Avifauna’s role as pollinating and dispersing agent will help the logged-over forest to recover. \u0000Keywords: conservation status, feeding guilds, Heart of Borneo, logging roads","PeriodicalId":32107,"journal":{"name":"Borneo Journal of Resource Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42392593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Supplementary Materials Tree Stands and Liana Community in Royal Belum State Park, Malaysia 补充材料马来西亚皇家贝伦州立公园的林分和Liana社区

Borneo Journal of Resource Science and Technology Pub Date : 2018-12-25 DOI: 10.33736/BJRST.1199.2018

Z. Rahmad, S. jOHARI, G. Akomolafe

{"title":"Supplementary Materials Tree Stands and Liana Community in Royal Belum State Park, Malaysia","authors":"Z. Rahmad, S. jOHARI, G. Akomolafe","doi":"10.33736/BJRST.1199.2018","DOIUrl":"https://doi.org/10.33736/BJRST.1199.2018","url":null,"abstract":"The diversity of lianas and trees were studied in five study sites of 100 x 20 m within the Royal Belum State Park, Malaysia with a view to provide baseline information on their incidence, taxonomy and ecological distributions. The sites include Sungai Kejar, Sungai Papan, Sungai Papan 2, Teluk Gopal and Sungai Kooi with at least 1000 m apart. These plots were further sub-divided into five sub-plots of 20 x 20 m each. Lianas with a diameter at breast height (dbh) ≥ 1 cm and trees with dbh ≥ 10 cm were identified and frequencies of occurrence were determined. Lianas comprising 92 species from 23 families while trees comprising 221 species and 48 families were enumerated. Annonaceae was the richest family of lianas and trees (19 species and 23 species respectively). Connarus (Connaraceae) and Spatholobus (Fabaceae) had the highest number of lianas (six species) whilst Syzygium (Myrtaceae) had the highest number of trees (11 species). There are significant differences in all the diversity indices among the study sites, except between Sungai Papan and Teluk Gopal which were the richest and most diverse in liana species. These two sites also showed high similarity index in liana species (0.50) followed by Sungai Kejar and Sungai Papan 2 (0.37). Sungai Kejar was however observed to have the highest tree species richness. These study sites could be described as very rich with a high diversity of lianas and trees. Although, it is richer in trees than lianas which means that the level of disturbance of the park is very low.","PeriodicalId":32107,"journal":{"name":"Borneo Journal of Resource Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41797531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Population Estimation of Proboscis Monkeys in Mangroves at Kuching Wetland National Park, Sarawak 沙捞越古晋湿地国家公园红树林中长鼻猴的种群估计

Borneo Journal of Resource Science and Technology Pub Date : 2018-12-25 DOI: 10.33736/bjrst.1201.2018

Ahmad Fitri Aziz, Charlie Justin Mergie Laman

引用次数: 1

Tree Stands and Liana Community in Royal Belum State Park, Malaysia 马来西亚皇家贝伦州立公园的树木和藤本植物群落

Borneo Journal of Resource Science and Technology Pub Date : 2018-12-25 DOI: 10.33736/BJRST.1198.2018

Z. Rahmad, S. jOHARI, G. Akomolafe

{"title":"Tree Stands and Liana Community in Royal Belum State Park, Malaysia","authors":"Z. Rahmad, S. jOHARI, G. Akomolafe","doi":"10.33736/BJRST.1198.2018","DOIUrl":"https://doi.org/10.33736/BJRST.1198.2018","url":null,"abstract":"The diversity of lianas and trees were studied in five study sites of 100 x 20 m within the Royal Belum State Park, Malaysia with a view to provide baseline information on their incidence, taxonomy and ecological distributions. The sites include Sungai Kejar, Sungai Papan, Sungai Papan 2, Teluk Gopal and Sungai Kooi with at least 1000 m apart. These plots were further sub-divided into five sub-plots of 20 x 20 m each. Lianas with a diameter at breast height (dbh) ≥ 1 cm and trees with dbh ≥ 10 cm were identified and frequencies of occurrence were determined. Lianas comprising 92 species from 23 families while trees comprising 221 species and 48 families were enumerated. Annonaceae was the richest family of lianas and trees (19 species and 23 species respectively). Connarus (Connaraceae) and Spatholobus (Fabaceae) had the highest number of lianas (six species) whilst Syzygium (Myrtaceae) had the highest number of trees (11 species). There are significant differences in all the diversity indices among the study sites, except between Sungai Papan and Teluk Gopal which were the richest and most diverse in liana species. These two sites also showed high similarity index in liana species (0.50) followed by Sungai Kejar and Sungai Papan 2 (0.37). Sungai Kejar was however observed to have the highest tree species richness. These study sites could be described as very rich with a high diversity of lianas and trees. Although, it is richer in trees than lianas which means that the level of disturbance of the park is very low. \u0000Keywords: Annonaceae, Connarus, forests, lianas diversity, Perak, Syzygium","PeriodicalId":32107,"journal":{"name":"Borneo Journal of Resource Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49152632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2