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Articles by Ibnu Sina
Total Records ( 4 ) for Ibnu Sina
  Fauziah Abdullah and Ibnu Sina
  A study to determine the abundance of rove beetle (Coleoptera: Staphylinidae) was conducted from 15 to 28 June, 2008 at the dipterocarp forest of Lanjak Entimau, Sarawak, Malaysia. Collections were made at five sites namely Kawi River, Menyaring II, Satap, Begua and Joh River. A total of 175 rove beetles comprising of 17 species were sampled from all 5 sites of Lanjak Entimau. There was a high abundance (Margalef index, 3.097) and moderate diversity (Simpson diversity index, 0.798) of rove beetles at Lanjak Entimau. Four species were identified to species level, Orphnebius bakerianus Motschulscky, 1858, Eleusis kraatzi LeConte, 1863, Belonuchus quadratu Nordman, 1837, Bledius gracilicornis Casey, 1889. Seven species were identified to genus level Orphnebius sp., Coproporus sp., Paederus sp1, Paederus sp2, Hesperus sp., Lispinus sp., Bledius sp. and six species could not be identified even to genus level. Six unidentified species probably new for Science. Moderate diversity and high abundance of rove beetles at Lanjak Entimau are due to diverse habitats. Some differences in species sampled from peninsular Malaysia is explained in terms of isolation between Sarawak in Borneo island with peninsular Malaysia.
  Ibnu Sina , Zaharah and Mohd Shukri Mohd Sabri
  The extract flower of Averrhoa bilimbi was studied for its larvicidal and chemical composition against malaria vector mosquito, Anopheles barbirostris. The larvicidal assay was conducted to record the LC50 and LC84 values. The larva mortality was observed after 24, 48 and 72 h of exposure period. The LC50 value of extract were 8.892 ppm after 24 h exposure, 4.015 ppm after 48 h exposure and 540 ppm after 72 h exposure whereas the LC84 value of extract were 66.881 ppm after 24 h exposure, 27.836 ppm after 48 h exposure and 2.084 ppm after 72 h exposure. Totally 22 compounds were identified by GC-MS. The major chemical compounds were cycloeicosane followed by. Benzenedicarboxylic acid and benzenepropanoic acid. The results of this study showed that extract of Averrhoa bilimbi is inexpensive, eco-friendly and save for human sources of natural mosquito larvicidal agent to control and reduce population of malaria vector mosquito.
  Fahma Wijayanti , Moh Naim and Ibnu Sina
  Background and Objective: Insect vectors, especially mosquitoes are responsible for spreading serious human diseases like malaria, Japanese encephalitis, yellow fever, dengue and filariasis. The various synthetic products and devices designed to combat such vectors are not successful because of increased resistance developed by various mosquito species. The usage of plant extracts is one of the possible methods of pollution free method in insect control. The objective of this study was to find new method for controlling adult of Aedes aegyptii using extract seeds of Nigella sativa. Materials and Methods: The study was conducted from July, 2016-August, 2017 at Laboratory of Toxicology, University of Malaya, Kuala Lumpur, Malaysia. The crude extract was obtained by powdered seed of Nigella sativa and extracted by n-hexane solution for 72 h. Bioassays was conducted using both Y-Olfactometer and wind tunnel condition. Identification of Nigella sativa has been conducted by injecting crude extract into GC-MS. Results: Dual choice bioassay showed that 64% females mosquito significantly (p<0.001) avoided black seed within 3.2 min whereas the longest time was 10.29 min for female mosquito to avoid the black seed at concentration 5000 ppm. In the wind tunnel, single mosquito was tested against 250-5000 ppm for 100 cm in wind or no wind conditions. In wind tunnel assays the threshold for single mosquito to exhibit avoidance behavior was 1000 and 5000 ppm in the presence of wind within 100 cm whereas it was 5000 ppm in the presence of no wind condition within 100 cm. The result of this study showed that the compounds of styrol, thymoquinone and p-cymene in the black seed were confirmed to be effective disturbing the behavior of mosquito. Conclusion: The black seed Nigella sativa has a potential to managing behavior of mosquito Aedes agyptii and can be used in term of integrated management system of pest control.
  Fauziah Abdullah , Ibnu Sina and Fatmahjihan Fauzee
  An assemblage of beetle specimens from family Carabidae (ground beetles) was carried out at Kenyir water catchment as an indicator to measure disturbance. The samplings were conducted from 30th July to 1st August 2007 at limestone forest of Teluk Bewah and the dipterocarp forest of Sungai Cicir. 28 individuals from 13 species were collected from Teluk Bewah whereas 54 individuals from ten species was sampled from Sungai Cicir. The carabids were more specious (Simpson Diversity index: 0.97) and more abundant (Margalef index: 5.35) at Teluk Bewah compared to Sungai Cicir (Simpson Diversity index, 0.72: Margalef index, 2.22). Light trapping was most efficient assembling 97.56% of ground beetles compared to Malaise trap, pitfall and net sweeping. This is the first record of beetle assemblage at Kenyir water catchment, Malaysia. New records for Kenyir, Terengganu, Malaysia are Abacetus sp. 1, Abacetus sp. 2, Acupalpus rectifrotis, Aephnidius adelioides, Dischissus notulatus, Dolichoctis sp., Dolichoctis sp. 2, Dolichoctis straitus, Ophinoea bimaculata, Perigona sp., Pheropsophus piciccollis, Pheropsophus occipitalis, Stenolophus quinquepustulatus, Stenolophus smaragdulus, Stenolophus sp., Tachys coracinus, Casnoidea sp., Orthogonius sp. Seven species coded as Cara C, Cara J, Cara M, Cara N, Cara O, Cara R and Cara S were unidentified and are probably new species to be described in another report. There is moderately high diversity (Simpson Diversity index: 0.846) of Carabidae indicating that ecotourism does not affect diversity of ground beetle at Kenyir Lake.
 
 
 
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