Judul: Efektivitas Metopren dan kelainan morfologi pada larva Culex quinquefasciatus
Abstrak: Cx. quinquefasciatus is important ectoparasite that often interfere settlements. This species is the vector of several important diseases including Japanese Encephalitis and Filariasis. The aim of this study was to determine the efficacy of the larvacides methoprene to Cx. quiquefasciatus. The test conducted to Cx. quinquefasciatus 3rd instar larvae with gradual concentrations from 0.0108 g/L, 0.0217 g/L, 0.0325 g/L, 0.0433 g/L, and 0.0541 g/L. The result showed that the mortality of Cx. quinquefasciatus larvae/pupae after 120 hours of exposure were 66.8% at 0.0108 g/L concentration, 87.2% (0.0217 g/L), 90.4% (0.0325 g/L), 96% (0.0433 g/L), and 99.2% (0.0541 g/L). This suggests that the effective concentration of methoprene was ranging from 0.0217g/L–0.0541g/L. The observation on the same concentrations and exposure time of methoprene at 720 hours age residual solution was not effective to kill larvae/pupae because the mortality was less than 80% of all concentrations. The morphological abnormalities of the larvae and the pupae after methoprene exposure were (1) damaged of larvae bodies was 2%, (2) damaged of pupae abdomen (12%), (3) pupae with a rigid body (76%), and (4) failed eclotion of pupae (10%).
Keyword: Bogor Agricultural University (IPB), methoprene, efficacy of larvacide, Culex quinquefasciatus

Judul: Efektivitas ekstrak daun tapak dara (Catharanthus roseus) sebagai larvasida nyamuk culex quinquefasciatus
Abstrak: Mosquitoes are blood-sucking insects related to human disease because its role as a biological vectors. The control of mosquitoe’s that using a synthetic substance leads to resistance and toxic to human and animals. This research was conducted to measured the activity and effectivity of tapak dara (Catharanthus roseus) leaves extract to the mosquitoe’s larvae of Culex quinquefasciatus mortality. The research was conducted in February - August 2013. This research were carried out in two steps, i.e. the extraction of tapak dara leaves and the phytochemical test; and the effication test of the extract against the larvae of Culex quinquefasciatus. The result showed that the mortality of Cx. quinquefasciatus larvae with concentration 2000 ppm after 24 hours exposured was 47%. The increasing of leaves extract concentration and the duration of the exposured were followed by the increasing of the larvae mortality rate. The LC50 value of Cx. quinquefaciatus was 3469 ppm. Based on the LC50 value tapak dara leaves extract was not effective against the larvae of Culex quinquefasciatus.
Keyword: Catharanthus roseus, Culex quinquefasciatus, larvicide

Judul: (Kasus Di Pt Sabani Internasional, Jakarta)
Abstrak: Kopi Sabani adalah salah satu divisi dari perusahaan perseorangan PT. Sabani Intemasional yang berlokasi di Jakarta, Indonesia. PT. Sabani Intemasional berdiri pada tahun 1993 yang bergerak di bidang perdagangan komoditas kopi dan kakao khusus untuk pasar lokal (dalam-negeri). Kegiatan perdagangan untuk pasar domestik berlangsung hingga tahun 1996. Pada awal tabun 1997, PT. Sabani Intemasional mulai melakukan perdagangan untuk pasar intemasional yang fokus kegiatannya pada komoditas kopi. Alasan utama perusahaan menfokuskan kegiatan perdagangan khusus komoditas kopi karena perusahaan ingin meningkatkan pelayanan terbadap rekanan bisnis (partner) mereka di luar-negeri.
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