Judul: Preferensi dan Efek Parasit Glochidia Kerang Philsbryconcha exilis terhadap Status Kesehatan dan Kinerja Pertumbuhan Ikan Inang
Abstrak: Parasit merupakan organisme yang hidup pada tubuh organisme lain (inang) dan umumnya menimbulkan efek negatif pada organisme yang ditempatinya. Dalam siklus hidupnya, kerang (P. exilis) pada stadia larva atau glochidia kerang bersifat parasit pada beberapa jenis ikan air tawar. sehingga perlu diketahui pengaruh keberadaan larva kerang air tawar terhadap kesehatan ikan yang dibudidayakan. Tujuan penelitian ini adalah untuk menguji preferensinya dalam memilih inang ikan budidaya, serta pengaruhnya secara umum terhadap status kesehatan dan kinerja pertumbuhan ikanbudidaya yang menjadi inang. Metode penelitian dilakukan dengan penambahan larva glochidia P.exilis kerang air tawar pada beberapa jenis ikan budidaya menggunakan rancangan perlakuan acak lengkap yang terdiri dari dua perlakuan dan tiga kali ulangan. Hasil penelitian menunjukan tingkat prevalensi, intensitas, dan encystment parasit glochidia P.exilis paling besar di antara ketiga jenis inang yang digunakan adalah ikan mas. Glochidia P.exilis mempengaruhi dinamika sistem imunitas non spesifik pada ikan selama periode penempelan parasit. Penempelan glochidia P.exilis mempengaruhi pertumbuhan ikan mas, namun tidak pada ikan lele maupun nila.
Keyword: Fish, Glochidia, Host, Parasite, Philsbryonconcha exilis

Judul: Preferensi Pemilihan Inang oleh Parasit Argulus sp. serta Pengaruhnya terhadap Kondisi Fisiologis Ikan
Abstrak: Argulus sp. is one of non-specific fish parasite, which can infect various species of fishes. Although, it still unknown whether there is any preference of fish species it liked. This experiment purposed to determine the preference of Argulus sp. in infecting five different species of fishes and its effect to the infected fish phisiology. Five different species of fishes including the family of Common carp, Giant gourami, Tilapia, Pangasius catfish and Walking catfish were infected by 150 Argulus sp. The result shows 100% of prevelence with the intensity of each parasite 55, 46, 20, 16, and 13. Common carp and Tilapia which infected by the intensity number of 10 Argulus sp. showed the reducing of body weight in 14 days. The number of Hematocrite and Hemoglobine of both fishes also decreased, but the number of white blood cell was increased.
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Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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