Judul: nventarisasi dan Identifikasi Tungau pada Cicak di Sekitar dan di Luar Kawasan Industri Tambun Kota Bekasi
Abstrak: Mites are organisms that can be associated with animals. Mites usually live as ectoparasites in gecko lizard. The aim of this study are to inventory, identify of mites and learn about their specificity on gecko that it found in Tambun industrial area, and residential area. Gecko species were found during the captured, e.g. Cosymbotus platyurus, Hemidactylus frenatus, Hemidactylus garnotii and Gehyra mutilata. Mites were preserved using whole mount method. The study found seven species of mites, they were Geckobia sp.1 (G1), Geckobia sp.2 (G2) or Geckobia glebosum, Geckobia sp.4 (G4), Geckobia sp.5 (G5), Geckobia sp.6 (G6), Geckobia sp.10 (G10), and Geckobia sp.14 (G14). Leg chaetotaxy observations indicated that mites G2, G4, and G6 were classified into Geckobia group 1, G10 and G14 as G. gleadoviana, and G5 as Geckobia indica. Mites on gecko dominant at hind limb of the leg; the thigh (37.4%) and the space between the lamella with claws (71.1%).
Keyword: lizard, ectoparasite, Geckobia, Tambun industrial

Judul: Inventarisasi dan Identifikasi Tungau Ektoparasit pada Cicak di Kawasan Taman Margasatwa Ragunan
Abstrak: Gecko interacts with various types of mites, both ectoparasite and endoparasite. Ectoparasite mites are parasitic organisms that live on the surface of its host, sucking the blood or feed on hair, fur, skin, or skin secretions. Many species of gecko were infested by Geckobia. The aim of this research was to inventory, identify, analyze mite’s leg chaetotaxy, calculate the prevalance and intensity of mite infestation, and learn the diversity of ectoparasites mites on gecko in the inside and outside of Taman Margasatwa Ragunan. Mites were prepared by whole mount method using polyvinyl alcohol media. Identification results based on characters of mites found twelve species of Geckobia (G1, G2, G4, G5, G6, G7, G10, G11, G12, G13, G18, and G19). However, based on chaetotaxy, the G2, G4, and G6 were grouped in Geckobia grup 1, G10 in group with G. gleadoviana, G11 in group with G. indica, G13 in group with G. keegani, and G19 in group with G. oedurae. The G1, G5, G7, G12, and G18 in the new group Geckobia. The highest of mite infestation intensity on gecko C. platyurus was mite G4. The highest of mite infestation intensity on gecko H. frenatus was mite G1, and gecko H. garnotii was mite G10. H. garnotii has the largest infestation intensity values.
Keyword: Bogor Agricultural University (IPB), Taman Margasatwa Ragunan, Geckobia, gecko, ectoparasite, chaetotaxy

Judul: Pervaporasi Alkohol Menggunakan Membran Polistirena-SDS
Abstrak: Polystyrene (PS) membrane with SDS as porogen can be utilized as a filter in alcohol pervaporation process. The membrane was prepared using inversed phase method with PS:SDS:dichloromethane solvent composition were 17:0:83; 17:0.5:82.5; 17:1:82; 17:1.5:81.5; and 17:2:81. Homogenization of mixtures were carried out for 10 and 20 hours and casted on glass plate surface then submerged it into water with temperature of 60 °C. Pervaporation capability was evaluated from flux value and separation factor. The average of water flux values in 20 hours sonication were higher than the values in 10 hours sonication. The highest separation factor was observed in PS membrane with 0.5% SDS concentration and homogenization in 20 hours is 5.23. Application of PS membrane in pervaporation as showed by purities of alcohol value using gas chromatography method revealed that the purities increase from 91.6 to 93.4%. Therefore, certain SDS addition can increase the performance of PS membrane in alcohol purification.
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