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-Zeolit untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Direct methanol fuel cell (DMFC) is a fuel cell that utilize methanol as the fuel source. The electrolyte membrane used in the DMFC system in this research was chitosan-zeolite composite membrane. The composite membrane was synthesized with chitosan-zeolite composition variation of 1:1, 1:2, 1:3, and 2:1. The membranes were analyzed by Fourier transform infrared spectrophotometer (FTIR) and scanning electron microscope, and for the specific gravity. Membrane performances were tested with methanol uptake, methanol permeability, conductivity, and potential difference in the DMFC system. The FTIR spectrum showed no formation of new functional groups inducating that the composite membrane was a result of physical mixing. Morphological analysis showed that the membrane was nonporous. Chitosan-zeolite 1:3 composite membrane had the highest specific gravity and methanol uptake, 1.4226 g/mL and 41.44%, respectively. The highest proton conductivity was showed by the 1:2 chitosanzeolite composite membrane, namely 7.2946× 10-7 S/cm. Based on this research results, chitosan-zeolite composite membrane can be applied in DMFC system.
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