Judul: Identifikasi struktur dan orientasi pusat-pusat pelayanan kawasan agropolitan (Studi Kasus Kawasan Cendawasari, Desa Karacak, Leuwiliang, Bogor)
Abstrak: Spatial structure is an important factor in the development of Cendawasari Area, which since 2008 is set by the Government of Bogor District as agropolitan area with mangosteen as a competitive commodity. The development of spatial structure in agropolitan area is largely determined by availability of service centers and the infrastructures. Service centers structure that formed in agropolitan area will lead to the spatial interaction that is the trend of inhabitant movement orientation. This orientation can be used as an evaluation of existing service centers structure and can be used as one of consideration things in infrastructure improvement. The aims of this research are to identify the linkages between structure and orientation of service centers in the development of Cendawasari Agropolitan Area. The research is located at Karacak Village, Leuwiliang Subdistrict, Bogor District and then analysis was conducted at the Planning and Regional Development Division, Department of Soil Science and Land Resource, Faculty of Agriculture, Bogor Agricultural University and in the Center for Regional System Analysis, Planning and Development (Crespent/P4W) LPPM IPB. The result of this research showed that Karacak Village is one of hinterland area in Leuwiliang Subdistrict, which is the service area of Leuwiliang Village as a main service center and a several sub service centers like Leuwimekar Village, Karyasari Village, and Pabangbon Village. RW 01 is an area with the highest level of interest and completeness of rural settlement facilities at Karacak village and RW 03 is an area which has the highest efficiency level of service facilities at Karacak Village. RW 07 is an area that has the most concentrated pattern of distribution facilities and RW 08 is an area that has most dispersed pattern of distribution facilities at Karacak Village. The highest concentration of mangosteen plantation land use in RW 05 area that is Kampong of Cengal Sirna. Household survey of respondents indicated that on a week, Karacak villagers tend to perform internal movement amount 76,8% of total trip, external movement amount 18,2% of total trip, and outside movement amount 5% of total trip. Mangosteen farmer respondents conduct internal movement amount of 36% and external movement amount of 64% to buy farming tools, while selling the crop just done by internally. The result of multiple regression analysis showed that efficiency level of service facilities, wide of settlement area, number of household, number of economic facilities, and number of agricultural facilities have significantly until very significantly affect on the internal movement, while the characteristics that have significantly affect on the external and outside movement is IPRW and number of economic facilities. Beside that, it can also note that increasing the number of economic facilities must be balanced with increasing the number of agricultural facilities to form a solid structure of internal and external sevice centers in Cendawasari Agropolitan Area.
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Judul: Analysis of Service Centers Structure and Trade-Flow of Strategic Commodities in Ciwidey Agropolitan Area, Bandung Regency
Abstrak: Development of agropolitan spatial structure was determined by the availability of infrastructures and service centers, centralization and competitiveness of strategic commodities and sectors, and trade-flow of strategic commodities. Ciwidey area which comprised three subdistricts (subdistricts of Pasirjambu, Ciwidey, and Rancabali) has been formally chosen as agropolitan area since the year 2005, where the aim was increasing productivity and competitiveness of agricultural, industrial and tourism products. The spatial structure were identified with (1) analyzing village’s development based on hierarchy of service centers and technique of skalogram, (2) strategic commodities / sectors of the area with employing technique of Location Quotient and Shift Share Analysis, and (3) pattern of trade-flow of strategic commodities in the area. There was also survey on trade-flow of strategic commodities and market center., Perkembangan struktur ruang suatu kawasan agropolitan dipengaruhi oleh pusat-pusat pelayanan dan infrastruktur yang tersedia, pemusatan dan tingkat kompetitif (competitiveness) sektor-sektor/komoditas unggulan, serta aliran tataniaga komoditas unggulan. Kawasan Ciwidey yang terdiri dari tiga kecamatan (Kecamatan Pasirjambu, Kecamatan Ciwidey dan Kecamatan Rancabali) sejak tahun 2005 telah ditetapkan sebagai kawasan agropolitan dimana tujuannya adalah meningkatkan produktivitas dan daya saing produk pertanian, industri dan pariwisata. Analisis struktur pusat-pusat pelayanan dan aliran tataniaga komoditaskomoditas unggulan diidentifikasi dengan (1) perkembangan wilayah berdasarkan hirarki pusat-pusat pelayanan dengan teknik skalogram, (2) sektor/komoditas unggulan kawasan dengan teknik Location Quotient dan Shift Share Analisis, serta (3) pola aliran tataniaga komoditas unggulan kawasan dengan survei aliran tataniaga komoditas unggulan dan pusat pasar.
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Judul: Pertahanan pada ikan terhadap infestasi ichthyophthirius multifiliis dengan tetrahymena pyriformis dan tetrahymena thermophila
Abstrak: Ichthyophthirius multifiliis adalah protozoa dari kelas Oligohymenophorea, ordo Hymenostomatida dan famili Ophryoglenidae. Protozoa ini sering menyerang ikan liar, ikan yang dibudidayakan dan ikan hias dalam akuarium. Bentuk dewasanya (trophozoit) tinggal dibawah kulit ikan yang menjadi inangnya. Mereka makan runtuhan sel dan mengelupaskan epithel. Angka mortalitas dapat mencapai 100% pada ikan yang dipelihara dalam akuarium. Penyakit ini telah dilaporkan dari semua benua. Banyak preparat kimia yang dapat dipakai untuk mengontrol parasit ini. Yang paling berhasil dari antara preparat-preparat kimia yang digunakan adalah malachite green dengan konsentrasi 0.25 ppm yang dibiarkan bekerja selama 1 jam. Namun ada masalah yang timbul dalam pengobatan, karena di dalam hampir setiap perairan terdapat parasit tersebut. Hal ini menyebabkan sewaktu-waktu atau secara kontinyu terjadi infestasi oleh parasit ini dalam populasi ikan. Untuk mengatasi masalah ini maka tindakan yang dianggap praktis dan efektif untuk mengontrol parasit ini adalah imunisasi. Disinipun timbul permasalahan pula. Karena Ichthyophthirius multifiliis adalah parasit obligat, maka sulit mengumpulkannya dalam jumlah yang cukup untuk pembu- atan vaksin. Maka dicari sumber lain untuk membuat vaksin terhadap parasit ini. Hasil penelitian menunjukan bahwa Tetrahymena pyriformis dan Tetrahymena thermophila dapat dipakai sebagai vaksin terhadap Ichthyophthirius multifiliis. Masalah yang timbul kemudian adalah bahwa perlindungan terhadap Ichthyophthirius multifiliis ternyata tergantung pada strain (galur) atau isolat dari kedua spesies Tetrahymena di atas yang digunakan. Sebagai pertahanan bentuk lain dari ikan selain imunitas dapat dikemukakan ketahanan non imunologis yang tergantung pada spesies ikan dan kenaikan kadar vitamin C didalam makanan.
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