Judul: Food Analysis at Interior Cavity of Lizard (Eutropis multifasciata) in Bogor West Java.
Abstrak: Interior cavity is a hollow muscle organ that consist of three parts, there are kardiak, fundus and pilorus. Content of interior cavity gives information about food composition and strategy to looking for the food. The aim of this study is to identify food exist in interior cavity of lizard (Eutropis multifasciata) at Bogor West Java. This aim is carried out to begin on February until June 2009. Lizard catching was done by using net and stick. The lizard that was caught is about 30 head. Lizard that caught at Darmaga has content interior cavity that consist of insect (29.41%), mollusc (5.88%), malacostraca (2.94%), worm (5.88%), and plant material (29.41%), while lizard that caught at Cibatok has content interior cavity that consist of insect (87.5%) and mollusc (12.5%). Lizard caught at Darmaga and Cibatok be opportunist predator. Food kind at most eaten lizard at Darmaga arachnida, while food kind at most eaten lizard at Cibatok order orthoptera.
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Judul: Preferensi makanan pada dua species cicak, Hemidactylus frenatus Dymb. Bibr dan Cosymbotus platyurus Schneider melalui analisis makanan dalam lambung
Abstrak: The aim of this research was to study of food preference of two house gecko species, H. frenatus (Hf) and C. platyurus (Cp) at several localities in Bogor. This study were conducted from November 2005 upto Mei 2006. Geckos were collected from evening upto midnight (16:00 - 01:00 WIB) by hands, stick, and water gun. Morphometrical characters and diametre of stomachs were measured using caliper (with 0.05 mm precission). Stomach contents were grouped into animal, plant material, and other material. Data were analyzed by calculation of total item in each food category (ni), the number of items (N), Shannon-Wiener diversity index (H') and evenness (E), Jaccard's similarity index (Cj), and one-way analysis of variance (ANOVA) with 95% confidence level. The diet composition of two gecko species were Insecta (95%), Arachnida (0.65%), Mollusca (0.1%), plant materials (2.5%), and other materials (1.75%). Fourteen food categories were found in Hf and 11 food categories were found in Cp. Food diversity in Hf (H'= 1.536) was higher than Cp (H'= 1.429) but evenness in Hf and Cp were equal (E= 0.582 and E= 0.596). The similarity of food item in Hf and Cp was high (Cj= 0.75). Food category in two gecko species were dominated by flies and mosquito (Diptera). Percentage of food category from gecko at Gunung Batu were higher than other areas. Food percentage were higher in December and February than other months. Based on ANOVA analysis of food percentage between locations and months were not significantly different (P>0.05).
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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