Judul: Prevalensi Infestasi Parasitoid pada Ulat Sutera Liar Attacus atlas (Lepidoptera: Saturniidae) di Perkebunan Teh Kabupaten Purwakarta
Abstrak: The purpose of this research was to study of prevalence infestation of parasitoids to Attacus atlas (Lepidoptera: Saturniidae), characteristic of the pupae parasitoids discharge, species of parasitoid, and infestation of parasitoid. The results showed the prevalence of parasitoids on A. atlas in the tea plantation Purwakarta Regency was 29.61%. There were three species of parasitoid obtained, i.e. (1) Xanthopimpla gampsura (Hymenoptera: Ichneumonidae) with a prevalence of 21.23%, this parasitoid were make a hole in the anterior pupae (5.39 ± 0.49 mm); (2) Theronia sp. (Hymenoptera: Ichneumonidae) with a prevalence of 6.15%, with hole located anterior (2.75 ± 0.21 mm), lateral (2.67 ± 0.29 mm), and the anterior-lateral holes in one pupae (2.7 ± 0.21 mm), and Parasitoid (3) Exorista sorbillans (Diptera: Tachinidae) with the prevalence of 2.23%. There were 5-8 larva of E. sorbillans / pupa of A. atlas.
Keyword: tea plantation, prevalence, parasitoid, Attacus atlas, Bogor Agricultural University (IPB)

Judul: Pertumbuhan Ulat Sutera Liar Attacus Atlas L. Instar IV-VI pada Tipe kandang yang Berbeda
Abstrak: Attacus atlas termasuk ordo Lepidoptera yang mengalami metamorfosa sempurna. Umumnya serangga ini dikenal sebagai hama tanaman. Attacus atlas merupakan salah satu satwa harapan penghasil sutera yang perlu dikembangkan karena memiliki potensi ekonomi, tingkat reproduksinya tinggi, perkembangan relatif cepat dan masa pemeliharaan yang singkat. Larva sutera ini merupakan jenis hewan polifagus, yang dapat memakan berbagai jenis pakan daun. Alternatif pakan yang digunakan adalah daun kenari (Canarium commune) karena ketersediannya melimpah di kota Bogor. Pemeliharaan larva A. atlas membutuhkan penanganan dalam segi faktor lingkungan dan pakan karena larva sutera termasuk hewan poikiloterm yang suhu tubuhnya dipengaruhi secara langsung oleh suhu lingkungannya. Tempat pemeliharaan yang cocok perlu dipilih untuk pertumbuhan larva sutera liar A. atlas dari bahan yang mudah didapat dan murah harganya.
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Judul: Membran Komposit Kitosan-Natrium Alginat untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Composite of chitosan and sodium alginate can be utilized as base material of proton exchange membrane (PEM). The composite membranes were produced by various concentrations of chitosan-sodium alginate, namely 3:3, 3:4, 3:5, 3:6, 4:3, 5:3, and 6:3 (% b/v). The composites were characterized by using Fourier transform infrared spectrophotometer (FTIR), scanning electron microscope (SEM), and were tested for the performance as PEM from the proton conductivity obtained by using impedance spectrometer. The FTIR spectrum indicated the NH3C group at 1637.29 cm-1 and symmetrical COO group at 1253.68 cm-1 indicating interactions between chitosan and sodium alginate. SEM micrographs showed that the composite membrane was nonporous. Composite membrane with 3:5 chitosan-sodium alginate composition had the highest proton conductivity, namely 9.594 × 10-7 S/cm. Based on this research results, chitosan-sodium alginate composite membrane can be applied well in direct methanol fuel cell system.
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