Judul: Keanekaragaman Tungau Ektoparasit Pada Cicak Hemidactylus Di Depok
Abstrak: One of ectoparasites on Hemidactylus lizard are Geckobia mites of family Pterygosomatidae. This research aimed to determine the diversity, prevalence, infestation intensity, chaetotaxy, and total intensity of ectoparasites mites on Hemidactylus lizard in Depok. Mites were taken from head, eyes, a part of body, thigh, tail, front finger, and back finger, then preserved in 70% alcohol. Mites were prepared on whole mount method using polyvinyl alcohol (PVA). This research found 107 of lizard and nine species of ectoparasites mites namely Geckobia sp1, G2 (Geckobia glebosum), Geckobia sp4, Geckobia sp5, Geckobia sp7, Geckobia sp10, Geckobia sp11, Geckobia sp13, and Geckobia sp14. Prevalence mite on lizard H. garnotii was 85.18%, and H. frenatus was 84.61%. The highest of mite infection intensity on lizard H. garnotii was mite G1, and H. frenatus was mite G. glebosum. The highest infection intensity of mite was on H. garnotii. Leg chaetotaxy observations indicated that mites G2 is G. glebosum, G5 and G11 including Geckobia indica group, G10 and G14 including G. gleadoviana group, G13 including G. keegani group, and G4 including Geckobia group 1.
Keyword: Bogor Agricultural University (IPB), mites, chaetotaxy, Hemidactylus, Geckobia, ectoparasites

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: Sintesis 1-Kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai Prekursor Asam (S)-(+)-(6-Metoksi-2-naftil)propanoat
Abstrak: Senyawa 1-kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai prekursor asam (S)-(+)-(6-metoksi-2-naftil)propanoat disintesis dari bahan awal 2-metoksinaftalena. Tahapan sintesis diawali dengan klorinasi menggunakan 2 jenis pereaksi klorinasi, yakni isosianurat terklorinasi dan NaOCl. Klorinasi dengan isosianurat terklorinasi berhasil menyintesis 1-kloro-2-metoksinaftalena sebagai produk monoklorinasi melalui pencirian dengan kromatograf gas-spektrometer massa (GC-MS). Nisbah konversi produk paling efisien diperoleh pada laju penambahan 2.5 mmol/jam. Sebaliknya, klorinasi dengan NaOCl menghasilkan produk triklorinasi. 1-Kloro-2-metoksinaftalena selanjutnya diasilasi dengan propanoil klorida, tetapi analisis dengan GC menunjukkan bahwa produk asilasi tidak terbentuk. Sistem bebas-air diperlukan untuk keberhasilan proses asilasi tersebut.
Keyword: isosianurat terklorinasi, NaOCl, nisbah konversi