Judul: Evaluation of Feeding Response of Carp (Cyprinus carpio) Given Various Light Stimulus as a Sign of Eating and Stressor
Abstrak: Penelitian bertujuan mengevaluasi respon makan ikan mas yang sudah dikondisikan dengan menggunakan kilatan cahaya sebagai rangsangan terkondisi untuk perlakuan pemberian makan ikan sekaligus melihat bagaimana stressor dapat memengaruhi respon makan ikan tersebut. Cahaya berwarna digunakan sebagai tanda makan untuk dapat mengevaluasi kemampuan ikan yang dalam mengasosiasikan sinyal tertentu dengan kegiatan pemberian pakan. Penggunaan metode pada penelitian ini yaitu rancangan acak lengkap dengan melakukan 4 perlakuan dan 3 ulangan, di antaranya, P1 (warna dan sisi cahaya acak, tanpa stressor), P2(warna cahaya hijau, tanpa stressor), P3 (warna cahaya hijau, stressor) dan, Kontrol (tanpa stimulus cahaya). Hasil penelitian menunjukkan bahwa metode pemberian pakan menggunakan stimulus cahaya berwarna sebagai penanda makan berpengaruh terhadap respon ikan mas yang mampu beradaptasi atau belajar terhadap stimulus-stimulus yang diberikan berdasarkan waktu mendekati pada sumber cahaya yang diberikan, yakni rata-rata ikan pada awal pemberian stimulus membutuhkan waktu rata rata lebih dari 90 detik dan pada akhir pemberian stimulus meningkat menjadi 20–40 detik. Perlakuan cahaya maupun stressor tidak mempengaruhi pertumbuhan ikan pada pemeliharaan selama 28 hari., The aim of this study was to evaluate the conditioned feeding response of carp fish using a flash of light as the conditioned stimulus for the fish feeding treatment and to see how stressors could affect the feeding response of the fish. Colored light is used as a feeding signal to be able to evaluate the ability of fish to associate certain signals with feeding activities. The method used in this study was a completely randomized design with 4 treatments and 3 repetitions, including, P1 (color and random light side, without stressor), P2 (green light color, without stressor), P3 (green light color, stressor) and, Control (without light stimulus). The results showed that the feeding method using a colored light stimulus as a feeding marker had an effect on the response of carp fish that were able to adapt or learn to the given stimuli based on the time it took to approach the given light source, i.e. the average fish at the beginning of giving the stimulus needed time average more than 90 seconds and at the end of the stimulus increased to 20-40 seconds. Light and stressor treatment did not affect fish growth in maintenance for 28 days.
Keyword: Carp, Light, Response

Judul: Pengaruh Perubahan Suhu Media Air Pembugaran terhadap Survival Rate dan Glukosa Darah Ikan Mas (Cyprinus Carpio)
Abstrak: Kualitas ikan dapat menurun akibat adanya aktivitas fisik ataupun stress selama proses transportasi. Penelitian ini bertujuan untuk menentukan pengaruh perubahan suhu media air dalam pembugaran ikan mas terhadap survival rate, kadar glukosa darah, serta jaringan mata dan insang ikan mas (Cyprinus carpio). Penelitian ini menggunakan bahan anestesi ekstrak serai 13% yang memiliki rata-rata waktu pingsan terendah yaitu 2,02 menit dan rata-rata waktu pingsan terlama yaitu 2,62 menit. Waktu sadar ikan mas tercepat terdapat pada perlakuan suhu 28ºC dengan nilai yaitu 6,31 menit, sedangkan pada suhu 8ºC didapatkan hasil yaitu 22,76 menit. Pembugaran pada suhu 28ºC meningkatkan nilai glukosa darah sebesar 79,56 mg/dL, sedangkan pada suhu 8ºC hanya 20,78 mg/dL. Nilai survival rate ikan mas dengan perlakuan suhu pembugaran 8ºC dan 28ºC mencapai 100%. Perubahan suhu lingkungan yang terjadi secara tiba-tiba berpengaruh langsung terhadap tingkat stress ikan dan menyebabkan glukosa darah pada ikan semakin tinggi., Fish quality decrease due to physical activity or stress during the transportation process. This study aimed to determine the effect of water temperature changes on the survival rate, blood glucose levels, and eye and gill tissue during carp (Cyprinus carpio) recovery. This study used 13% lemongrass extract which had the lowest induction time of 2.02 minutes and the longest immotilisation time 2.62 minutes. The fastest carp recovery time was found at a temperature treatment of 28ºC for 6.31 minutes, while at 8ºC the result was 22.76 minutes. Recovery process at 28ºC increased carp blood glucose levels up to 79.56 mg/dL, while at 8ºC only 20.78 mg/dL. Nevertheless, the survival rate of carp at both temperatures reached 100%. Drastic environmental changes will have a direct effect on fish stress and increases blood glucose levels.
Keyword: Stunning, lemongrass, rejuvenation, temperature shock

Judul: Penyusunan Overlap Graph menggunakan Suffix Tree pada DNA Sequence
Abstrak: The DNA sequence assembly is very important in genome analysis. This step aims to reconstruct contigous DNA fragment (contigs) from short fragment by concatenating fragments based on the overlap region among them. This method employs overlap graph for solving the problems. In this graph, nodes represent fragments and edges represent overlap. This research developed a software for constructing overlap graph using suffix tree. The evaluation was conducted by measuring the number of nodes, number of edges, and the execution time in many values of minimum overlap. The minimum overlap is defined as the minimum length of substring which is considered as the overlap region between two fragments. The evaluation results showed that the number of nodes, the number of edges, and the execution time were increased with the decreasing of the minimum overlap value.
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