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Tropical Life Sciences Research

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https://www.readbyqxmd.com/read/28890771/a-preliminary-survey-of-species-composition-of-termites-insecta-isoptera-in-samunsam-wildlife-sanctuary-sarawak
#1
Norsyarizan Jamil, Wan Nurainie Wan Ismail, Siti Shamimi Abidin, Mazdan Ali Amaran, Ratnawati Hazali
A survey on termite species composition was conducted in Samunsam Wildlife Sanctuary, Sarawak in February 2015. Overall 19 species of termite belonging to 13 genera and 8 subfamilies was found in the sanctuary. It was recorded the subfamily of Termitinae had the highest number of species (6 species, equal to 31.58% of total species), followed by Nasutermitinae (3 species, 15.79%), Macrotermitinae, Amitermitinae, Rhinotermitinae, Coptotermitinae, (2 species, 10.53% respectively), and Heterotermitinae, Termitogetoninae (1 species, 5...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890770/using-non-supervised-artificial-neural-network-for-determination-of-anthropogenic-disturbance-in-a-river-system
#2
Nurul Ruhayu Mohd Rosli, Khairun Yahya
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...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890769/pollen-load-and-flower-constancy-of-three-species-of-stingless-bees-hymenoptera-apidae-meliponinae
#3
Norita Widya Pangestika, Tri Atmowidi, Sih Kahono
The genera of stingless bees play an important role as pollinators of plants. These bees are actively involved in the pollination of agricultural crops and known to have preferences in selecting flowers to pollinate. The aims of this study were to analyse the pollen load and flower constancy in Tetragonula laeviceps, Lepidotrigona terminata, and Heterotrigona itama. Each individual of species stingless bees collected and was put in a 1.5 mL micro-tube contain 0.5 mL 70% ethanol:glycerol (4:1). Pollen loads on each individual of stingless bees was counted by hemocytometer...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890768/isochrysis-maritima-billard-and-gayral-isolated-from-penang-national-park-coastal-waters-as-a-potential-microalgae-for-aquaculture
#4
Mohammad Basri Eshak, Wan Maznah Wan Omar
The importance of polyunsaturated fatty acid (PUFA) in microalgae was widely reported. In this study, six isolated microalgae from Teluk Aling, Penang National Park were screened for PUFA contents. Isochrysis maritima showed the best polyunsaturated fatty acids essential for aquaculture species compared to other microalgal species tested. This species is a good choice as aquaculture feed due to its small size (3-7 μm), which is appropriate size for ingestion. The maximum specific growth rate of this species was also high (0...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890767/application-of-aquatic-insects-ephemeroptera-plecoptera-and-trichoptera-in-water-quality-assessment-of-malaysian-headwater
#5
Suhaila Ab Hamid, Che Salmah Md Rawi
The Ephemeroptera, Plecoptera and Trichoptera (EPT) community structure and the specific sensitivity of certain EPT genera were found to be influenced by water parameters in the rivers of Gunung Jerai Forest Reserve (GJFR) in the north of peninsular Malaysia. The scores of EPT taxa richness of >10 in all rivers indicated all rivers' habitats were non-impacted, having good water quality coinciding with Class I and Class II of Malaysian water quality index (WQI) classification of potable water. The abundance of EPT was very high in Teroi River (9,661 individuals) but diversity was lower (22 genera) than Tupah River which was highly diverse (28 genera) but lower in abundance (4,263 individuals)...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890766/some-biological-aspects-of-bigeye-scad-selar-crumenophthalmus-from-bangaa-faru-maldives
#6
Nik Fadzly, Shaza Adeeb, Amir Shah Ruddin Md Sah
In this paper, we studied some biological aspects of big eye scad (Selar crumenophthalmus) from Maldives. The fish sample was collected from the local fish market at Bangaa Faru, Male, Maldives. The length of the samples were ranged from 7.7 cm to 24.5 cm (mean value = 16.85 ± 2.82 cm) in fork length. Body weight ranged between 8 g to 255.6 g (mean value = 87.76 ± 40.41 g). The exponent values (b slope) of lengthweight relationship of S. crumenophthalmus are 2.9838 for females and 2.7687 for males; indicating negative allometric growth pattern for both sexes...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890765/evaluation-of-nutritional-composition-of-the-dried-seaweed-ulva-lactuca-from-pameungpeuk-waters-indonesia
#7
Abdullah Rasyid
The nutritional composition of the dried seaweed Ulva lactuca from Pameungpeuk waters, including proximate, vitamins, minerals, dietary fibre and heavy metal has been carried out. The objective of this present study is to know the nutritional composition of the dried seaweed U. lactuca for utilisation in human nutrition in the future. Results show that carbohydrate was the major component in the proximate analysis of U. lactuca in the present study. The carbohydrate content was 58.1%. Moisture, ash, protein and fat content were 16...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890764/lactococcus-lactis-strain-a5-producing-nisin-like-bacteriocin-active-against-gram-positive-and-negative-bacteria
#8
Nur Shazana Azhar, Noor Hasniza Md Zin, Tengku Haziyamin Tengku Abdul Hamid
In this study, a Lactic acid bacteria (LAB) strain was isolated on MRS medium from gastro-intestinal tissues of Broadhead catfish (Clarias macrocephalus). Out of 50 isolates, 25 isolates were found to be positive on lactose utilisation test and were identified to be gram positive cocci. Using disc diffusion methods, one out of 22 isolates, i.e., a strain A5 demonstrated inhibitions against three indicator organisms; Bacillus cereus, Staphylococcus aureus and Salmonella thyphimurium. Partial 16S rDNA sequencing identified isolate A5 as a member of Lactococcus lactis, with 100% DNA homology...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890763/ephemeroptera-plecoptera-and-trichoptera-insecta-abundance-diversity-and-role-in-leaf-litter-breakdown-in-tropical-headwater-river
#9
Suhaila Ab Hamid, Che Salmah Md Rawi
Leaf litter decomposition in a tropical stream was examined in two types of leaf packs; single species leaf packs of Pometia pinnata and two species leaf packs of equal combination of Pometia pinnata and Dolichandrone spathacea leaves. Both leaf packs were immersed in a river and weekly examined for remains of decomposed leaves and presence of EPT. In the control leaf packs, leaves in the two species leaf packs treatments decomposed within 35 days, faster than in single species leaf packs which decomposed after 42 days...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890762/nutrient-contents-of-the-freshwater-crab-isolapotamon-bauense-from-sarawak-malaysia-borneo
#10
Jongkar Grinang, Pang Sing Tyan, Andrew Alek Tuen, Indraneil Das
Data on nutrient contents of freshwater crabs are important for ecological studies and species conservation assessments, especially when the species concerned is threatened among others by habitat destruction and uncontrolled resources utilisation. Indeed comprehensive biological information is required to reconcile the needs between sustainable resources utilisation and conservation of the species. This study documents the nutrient contents of a freshwater crab, Isolapotamon bauense which is listed as 'Vulnerable' in the IUCN Red List of Threatened Species and also being harvested by local community for dietary supplement...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890761/hypothetical-protein-bpsl3393-of-burkholderia-pseudomallei-is-involved-in-ethanolamine-catabolism
#11
Ooi Gim Luan, Hokchai Yam, Razip Samian, Mustafa Fadzil Farid Wajidi, Nor Muhammad Mahadi, Suriani Mohamad, Nazalan Najimudin
Burkholderia pseudomallei is a soil-dwelling bacterium that causes a globally emerging disease called melioidosis. Approximately one third of the in silico annotated genes in its genome are classified as hypothetical genes. This group of genes is difficult to be functionally characterised partly due to the absence of noticeable phenotypes under conventional laboratory settings. A bioinformatic survey of hypothetical genes revealed a gene designated as BPSL3393 that putatively encodes a small protein of 11 kDA with a CoA binding domain...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890760/insecticide-residues-on-poultry-manures-field-efficacy-test-on-selected-insecticides-in-managing-musca-domestica-population
#12
Song-Quan Ong, Abdul Hafiz Ab Majid, Hamdan Ahmad
In this study, bifenthrin (Maxxthor SC, Ensystex Australasia Pty Ltd), imidacloprid (Prothor SC, Ensystex Australasia Pty Ltd) and fipronil (Regent(®)50SC, Bayer) were applied on the natural infest manures according to the manufacturer rate during a broiler breeding cycle. Solvent direct-immersion extraction (SDIE) was used in detecting the target compound and later, quantification of the insecticide residues in field condition was investigated. The samples were prior cleaned up by solid-phase extraction (SPE) and analysed by Ultra-Performance Liquid Chromatography (UPLC) - photodiode array (PDA) system...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890759/general-perceptions-and-awareness-level-among-local-residents-in-penang-island-toward-bats-conservation-efforts
#13
Nur Juliani Shafie, Shahrul Anuar Mohd Sah, Aini Hasanah Abdul Mutalib, Nik Fadzly
The population of bats has declined from year to year caused by human activities such as logging and hunting activities. Since the human factor is linked to the issues of population decline in many animal species, a community-based conservation strategy that involved local communities is needed. We conducted face-to-face surveys among residents in Penang Island to assess knowledge and awareness level toward bats conservation efforts. We collected demographic values such as age, gender, level of education, length of residency as well as their monthly income, since different group in these variable might have different perception...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890758/determination-of-trophic-structure-in-selected-freshwater-ecosystems-by-using-stable-isotope-analysis
#14
'Amila Faqhira Zainordin, Suhaila Ab Hamid
Stable isotope analysis has been used extensively to establish trophic relationships in many ecosystems. Present study utilised stable isotope signatures of carbon and nitrogen to identify trophic structure of aquatic food web in river and rice field ecosystems in Perak, northern peninsular Malaysia. The mean δ(13)C values of all producers ranged from -35.29 ± 0.21 to -26.00 ± 0.050‰. The greatest δ(15)N values noted was in zenarchopterid fish with 9.68 ± 0.020‰. The δ(15)N values of aquatic insects ranged between 2...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28890757/populations-of-rice-grain-bug-paraeuscosmetus-pallicomis-hemiptera-lygaeidae-in-weed-free-paddy-field-weedy-paddy-field-and-paddy-dykes
#15
Tamrin Abdullah, Andi Nasruddin, Nurariaty Agus
Research on the populations of rice grain bug Paraeuscosmetus pallicomis Dallas (Hemiptera: Lygaeidae) in paddy field ecosystems was performed with the aim to determine the populations of rice grain bug in weed-free paddy field, weedy paddy field, and paddy dykes. Experiment was carried out in the village of Paccellekang in the district of Patallasang of Gowa Regency in South Sulawesi, Indonesia. Observations were performed during the milky grain stage (85 days after planting), the mature grain stage (105 days after planting), and one day after harvest (115 days after transplanting)...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28228924/prevalence-of-muscular-sarcosporidiosis-in-slaughtered-domestic-pigs-in-perak-peninsular-malaysia
#16
Fazly Ann Zainalabidin, Muhamad Syamsul Naim Noorazmi, Wan Normaziah Wan Omar Bakri, Geethamalar Sathaya, Mohd Iswadi Ismail
Sarcosporidiosis is a disease caused by intracellular protozoan parasites, namely, Sarcocystis spp. In pigs, three species of Sarcocystis spp. have been recognised, including Sarcocystis meischeriana, Sarcocystis porcifelis and Sarcocystis suihominis. The aim of this study is to determine the prevalence of muscular sarcosporidiosis in pigs using the pepsin digestion technique. A total of 150 fresh heart, oesophagus and thigh muscle samples from 50 Yorkshire and Landrace pigs were collected from two local abattoirs in Perak from May to August 2014...
January 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28228923/rodent-species-distribution-and-hantavirus-seroprevalence-in-residential-and-forested-areas-of-sarawak-malaysia
#17
Nur Elfieyra Syazana Hamdan, Yee Ling Ng, Wei Bin Lee, Cheng Siang Tan, Faisal Ali Anwarali Khan, Yee Ling Chong
Rodents belong to the order Rodentia, which consists of three families in Borneo (i.e., Muridae, Sciuridae and Hystricidae). These include rats, mice, squirrels, and porcupines. They are widespread throughout the world and considered pests that harm humans and livestock. Some rodent species are natural reservoirs of hantaviruses (Family: Bunyaviridae) that can cause zoonotic diseases in humans. Although hantavirus seropositive human sera were reported in Peninsular Malaysia in the early 1980s, information on their infection in rodent species in Malaysia is still lacking...
January 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28228922/parasitic-gregarine-blattarum-found-infecting-american-cockroaches-periplaneta-americana-in-a-population-in-pulau-pinang-malaysia
#18
Zary Shariman Yahaya, Nik Ahmad Irwan Izzaudin, Ainul Farhana Abdul Razak
A study on the prevalence of a common endoparasite in the wild population of the American cockroach was conducted in Penang Island using a trapping method at several sampling sites on the island. Gregarine blattarum was found in the digestive tract in 5 out of 115, or 4.35%, of the wild American cockroaches, Periplaneta americana, that were sampled. This is the first report in Malaysia of Gregarine blattarum in local American cockroaches.
January 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28228921/scuttle-flies-diptera-phoridae-inhabiting-rabbit-carcasses-confined-to-plastic-waste-bins-in-malaysia-include-new-records-and-an-undescribed-species
#19
Raja M Zuha, See Huong-Wen, R Henry L Disney, Baharudin Omar
Scuttle flies (Diptera: Phoridae) are small-sized insects of forensic importance. They are well known for diversified species and habitats, but in the context of forensic entomology, scuttle flies' inhabitance of corpses remains inadequately explored. With recent reports indicating the existence of more scuttle fly species possibly inhabiting these environments, a decomposition study using animal carcasses in enclosed environments was conducted. The aim was to record the occurrence of scuttle flies on rabbit carcasses placed in sealed plastic waste bins for a 40-day period...
January 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28228920/checklist-of-gastropods-from-the-exclusive-economic-zone-eez-sarawak-malaysia
#20
Wan Zabidii Wan Morni, Siti Akmar Khadijah Ab Rahim, Richard Rumpet, Jamil Musel, Ruhana Hassan
This study provides the first marine gastropod checklist from the Sarawak Exclusive Economic Zone (EEZ). Gastropod samples were collected from selected stations in the Sarawak EEZ using an otter trawl net with a stretched mesh size of 38 mm at the cod end. The trawling operations were conducted more than 12 nautical miles from the coast, and the area was divided into three depth strata: I) 20-50 m, II) 50-100 m and III) 100-200 m. A total of 23 gastropod species were identified during the two-month sampling period from 16 August until 6 October 2015, representing 8 superfamilies, 15 families and 20 genera...
January 2017: Tropical Life Sciences Research
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