Judul: Studies on the development of a chemically defined diet for the two-spotted spider mite (tetranychus telarius L.)
Abstrak: An attempt to culture the plant-feeding mite, Tetranychus telarius L. on a chemically defined diet is discussed in this thesis. The development of a suitable rearing technique was one of the important problems. Several methods were tested and only two were proved to be satisfactory. The methods adopted in subsequent experiments were: 1. Introduction of the mites onto a thin collodion membrane supported by a pith disc. 2. Introduction of the mites onto a very thin plastic membrane sprayed on a pith disc. The former was obtained from a solution of flexible collodion liquid (U.S.P.) in amyl acetate which was allowed to evaporate on a layer of lukewarm sterile distilled water. The latter was obtained from a crystal-clear liquid spray in a pressurized can. Pith discs were arranged in rows stuck on a piece of paper towel and sprayed several strokes with the liquid plastic from a distance. Both methods were satisfactory but the latter seemed to have more advantages. The diets developed and tested in subsequent experiments were in liquid form. They consisted of 18 dietarily essential amino acids, sucrose, salt mixture #2 (U.S.P.), 10 important B vitamins, ascorbic acid, cholesterol, linoleic and linolenic acids. The 18 amino acids were: alanine, arginine, aspartic acid, cysteine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenyl- alanine, proline, serine, threonine, tryptophane, tyrosine, valine: The amino acids-carbohydrates ratio was varied from 3:1 to 1:3. Better results were obtained with the higher carbohydrate ratio. Diets that gave best results contained an amino acids-carbohydrates ratio of 2:3; sucrose 2 grams; 50 mg. of salt mixture; 50 mg. of cholesterol; 33.4 mg. linoleic acid; 10.0 mg. of linolenic acid and 203.21 mg. of vitamins. All these were dissolved in 100 ml. of water.
Keyword: Nutritional requirement, Chemical diet, Insect

Judul: Biology and population abundance of spider mite tetranychus kanzawai (Acari: Tertanychidae) on Two cultivars of Jatropha curcas
Abstrak: Spider mite Tetranychus kanzawai is one of the most important pests attacking leaf of Jatropha curcas. Study was conducted with the objectives to elucidate life history parameters and abundance of spider mite on two Jatropha curcas cultivars. Field studies were carried out in BALITTRI Pakuwon Sukabumi, and laboratory experiments were conducted at the Department of Plant Protection, Bogor Agricultural University, from June to November 2008. Cultivars significantly affected some life history parameters of the spider mite. Spider mite reared on IP1 cultivar have longer oviposition period and higher fecundity than those on IP2 (7.00 days and 25.56 eggs against 5.00 days and 10.00 eggs). Intrinsic rate of increase was also higher on IP1. However, field studies indicated that the spider mite were less abundant on this cultivar. These might be due to the presence of other arthropods which were higher on IP1. In general, the highest population of spider mite occurred in August and the lowest in October- November.
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Judul: Pengaruh Konsep Lanskap Keraton Ngayogyakarta Hadinigrat terhadap Lanskap Kota Yogyakarta
Abstrak: Kota Yogyakarta merupakan kota yang menjadi pusat kebudayaan Jawa dengan adanya Keraton Yogyakarta dan bekas Kerajaan Mataram Islam. Sebagai sebuah kota dengan latar historis kerajaan yang kuat dan legilimasi keraton yang sampai saat ini masih cukup kuat, maka kehidupan keraton mempengaruhi pula kehidupan rakyat Kota Yogyakarta. Keraton dan kawasan kerajaan dibangun berdasarkan konsep-konsep filosofis yang menghasilkan wujud fisik penuh makna dan merupakan cikaI bakaI Kota Yogyakarta. Namun dalam perkembangannya, dengan adanya pengaruh pendatang dan globalisasi, malta banyak terjadi pergeseran nilai dan kebudayaan serta filosofi yang melingkupinya Hal. ini dikhawatirkan akan semakin mengaburkan identitas Kota Yogyakarta.
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