Judul: Studi Kasus Patologi Infeksi Protozoa Tetrahymena spp pada Ikan Hias Guppy (Poecilia reticulata )
Abstrak: The study was aimed to explore the protozoan Tetrahymena spp infection in Guppy (Poecilia reticulata) fish, with intended to the morphology of parasites in tissue sections and the resulting tissue lesions. Sample of diseased Guppy fishes were used in the study. Observation of clinical symptoms of the Guppy were revealed lethargic, vertical swimming and impaired equilibrium. The fish organs were observed macroscopically and microscopically. The result of macroscopic observation showed that there were excessive haemorrhage and ulceration at skin particularly in the dorsal and lateral abdomen. Protozoan parasite in the skin, muscles and gill tissues were identified by histopathological examination using hematoxylin-eosin staining and positive responses to periodic acid Schiff staining. Study of protozoan morphology revealed a spherical shape pyriform with a narrow anterior end, have dimension in average 50.5 x 32.4 μm. The parasites cause skin erosion, and hemorrhage, muscular degeneration and necrosis along with gills edema. Severe fatty degeneration was presented in liver while there was edema and congestion in the intestinal mucosa. As these fishes were been cultured in the aquarium such disease is thought to be caused by the deterioration of water quality, feed contamination or a poor handling.
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Judul: Studi Histopatologi Insang, Usus Dan Otot Ikan Gurami (Osphronemus gouramy) Akibat Infestasi Parasit Protozoa Di Desa Carangpulang Dramaga Bogor
Abstrak: The aim of the research was to find out the histopathological lesions of gouranzy fish gills, intestines, and muscles from Carangpulang Village Bogor. Fifteen fishes about a year old wlere used as sample in this research. Histopathological examination was done by lzenzatoxiilin and eosin stain (HE). Microscopically, gill was the izostc ommon organ with pathological lesions. Gill was ofen infected by flagellum protozoa parrrsites, such as Ichthyobodo sp, Myxozoa (Hennegujla sp and Myxobolus sp) and unidentified protozoa. In intestines, no specijic pathological change was found, while in muscle tissue hyaline and vacuola degenerations as well as necrotic lesions were commonly detected. Based on all findings mentioned above, the lesion of gill fishes were inzcted by protozoa Ichthyobodo sp and myxozoa which can cause ichthyobodosis. Moreover, we suggest that a non infectious agent such as chemical polutans as one of the caused of oedema, telangiectasis and thickening of lamella of the gills.
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Judul: Prediksi Cadangan Klaim IBNR dan RBNS dengan Metode Bornhuetter Double Chain Ladder
Abstrak: Prediksi cadangan klaim memegang peranan penting bagi perusahaan asuransi karena informasi ini akan digunakan untuk menilai kesanggupan perusahaan asuransi dalam memenuhi kewajiban pembayaran klaim di masa yang akan datang. Pada praktiknya, cadangan klaim terbagi menjadi dua yaitu incurred but not reported (IBNR) dan reported but not settled (RBNS). Pada tahun 2012, Miranda et al. mengembangkan sebuah metode yang dapat menghasilkan prediksi cadangan klaim IBNR dan RBNS secara terpisah, yaitu metode Double Chain Ladder (DCL). Meskipun mampu menghasilkan prediksi cadangan klaim IBNR dan RBNS secara terpisah, metode DCL cenderung menghasilkan nilai dugaan parameter inflasi (underwriting year inflation) yang tidak stabil pada tahun-tahun terakhir pengamatan, akibatnya prediksi cadangan klaim menjadi tidak akurat. Pada karya ilmiah ini diprediksi besarnya cadangan klaim IBNR dan RBNS dengan metode Bornhuetter Double Chain Ladder (BDCL). Metode ini merupakan pengembangan dari metode Double Chain Ladder (DCL) dengan mengadaptasi prinsip Bornhuetter-Ferguson untuk menstabilisasi parameter inflasi yang dihasilkan.
Keyword: BDCL, cadangan klaim, IBNR, parameter inflasi, RBNS