Judul: Keanekaragaman Tungau Ektoparasit pada Cicak Cosymbotus sp di Wilayah Depok
Abstrak: Ectoparasite mites are parasite that live on the body surface of the host. This research aims to see the diversity, intensity of infestation, and prevalence value of mites on house gecko, Cosymbotus platyurus, in Depok Area. Geckos were collected in three locations, such as houses, markets, and the city forest, and then preserved in 70% ethanol. Mites were collected from the head, tympani, armpit, part of body, thigh, tail, fingers, and toes of the geckos. From 140 individuals collected, 246 individuals of mites were found. The mites could be grouped in the genus of Geckobia and the family of Pterygosomatidae. Based on the morphological characteristics, the mites could be grouped into G1, G4, G5, G6, G7, and G10. Species identification of the mites based on chaetotaxy had confirmed that G5 and G10 were of close similarity to G. gleadoviana, while G4 and G6 were Geckobia Group 1, whereas the similarity of chaetotaxy G1 and G7 could not be confirmed. Prevalence of ectoparasites mites was the highest (55%) on the geckos from the city forest. The highest infestation value (4.0) were found in house geckos infected by G6, while the highest total infestation (4.6) was found among the geckos collected from the city forest.
Keyword: Geckobia, mites, ectoparasite, Cosymbotus, Geckos, Bogor Agricultural University (IPB)

Judul: Inventarisasi dan Identifikasi Tungau Ektoparasit pada Cicak di Kabupaten Cianjur
Abstrak: Ectoparasite mites are parasitic organisms that live on the surface of the host, sucking the blood or feed on hair, fur, skin, or skin secretions. This research aim to inventarisation and identification of mites ectoparasites on gecko in Cianjur areas. The research was conducted from January 2012 until July 2012. Gecko and mites were collected and preserved in 70% alcohol. Whole mount of the mites was prepared used polyvinyl alcohol media. The result showed that there are three species of gecko (Cosymbotus platyurus, Hemidactylus frenatus, and Gehyra mutilata) was infested by Geckobia mites. There are new seven spesies of Geckobia (G4, G5, G6, G7, G10, G11, and G12). Analysis of the presence of mites done by calculate the value of prevalence (P), the average intensity of infestation (I), and the total intensity (It). The prevalence in C. Platyurus gecko (P = 74.38%) is higher than G. mutilata (P = 50%), and H. frenatus (P = 33.33%), while the average infestation intensity (I) and total intensity (It) is the highest found in G. mutilata (I = 10 and It = 11). Geckobia G4 and Geckobia G10 were found only on C. platyurus; Geckobia G5 and Geckobia G12 were found on C. platyurus and G. mutilata; Geckobia G6 were found on whole infected gecko; Geckobia G7 were found on C. platyurus and H. frenatus; and Geckobia G11 were found on H. frenatus and G. mutilata. So it is concluded that the new seven species mites has not a specific distribution pattern of their hosts.
Keyword: 

Judul: Sintesis dan Pencirian Natrium Titanat (Na2Ti2O4(OH)2) Berbahan Dasar Titanium Dioksida
Abstrak: TiO2 can be utilized as basic material for synthesis of sodium titanate (Na2Ti2O4(OH)2). This research was purposed to synthesize and characterize sodium titanate from TiO2 rutile powder as a basic material. Sodium titanate was synthesized by hydrothermal process at temperature 130 °C by mixing TiO2 rutile powder with 5 M and 10 M NaOH solution, then each was calcinated at temperature 700 °C. The energy dispersive X-ray analysis showed that sodium titanate has been successfully synthesized. This result was also supported by functional group analysis with Fourier transform infrared (FTIR) spectrofotometer showing the existence of Ti-O-Na vibration band at 989.42 cm-1. The formation of sodium titanate was depend on the reaction condition such as temperature, reaction time, and NaOH concentration. Scanning electron microscope image indicated that sodium titanate synthesized at 130 °C in 20 hours reaction time with 10 M NaOH had crystal size of 99.37 nm.
Keyword: