Electronic Theses and Dissertation

Kebiasaan makan sangat penting dalam kehidupan suatu organisme dan merupakan salah satu faktor yang dapat menentukan luas persebaran suatu spesies serta dapat mengontrol besarnya suatu populasi. Tujuan dari penelitian ini menganalisis kebiasaan makan tiram (Crassostrea sp.) di perairan Alue Naga. Metode yang digunakan dalam penelitian ini yaitu metode Purposive Random Sampling dengan 3 titik stasiun sebanyak 45 sampel, kemudian diawetkan dengan formalin 4%. Analisis kebisaan makan dilakukan di Laboratorium Biologi Laut Fakultas Kelautan dan Perikanan, Universitas Syiah Kuala. Berdasarkan hasil kebiasaan makan yang dilakukan ditemukan komposisi makanan tiram sebanyak 20 genus fitoplankton yang terdiri dari 10 kelas yaitu Bacillariophyceae, Chlorophyceae, Tubulinea, Coscinodiscophyceae, Zygnematophyceae, Dinophyceae, Heterotrikea, Cyanophyceae, Euglenoidea dan Oligohymenophorea. Berdasarkan nilai IP (Indeks of Preponderance) makanan utama tiram diperoleh dari kelas Bacillariophyceae yaitu genus Synedra sp. di stasiun 1 dan 2, sedangkan di stasiun 3 diperoleh makanan utama tiram yaitu genus Navicula sp.

Kata Kunci : Kebiasaan Makan, Tiram, Alue Naga, Indeks of Preponderance

Eating habits are very important in the life of an organism and is one of the factors that can determine the extent of the distribution of a species and can control the size of a population. The purpose of this study was to analyze the eating habits of oysters (Crassostrea sp.) in Alue Naga waters. The method used in this research is the purposive random sampling method with 3 station points totaling 45 samples, then preserved with 4% formalin. The analysis of eating habits was carried out at the Marine Biology Laboratory, Faculty of Marine Affairs and Fisheries, Syiah Kuala University. Based on the results of eating habits, it was found that the composition of oyster food was 20 phytoplankton genera consisting of 10 classes, namely Bacillariophyceae, Chlorophyceae, Tubulinea, Coscinodiscophyceae, Zygnematophyceae, Dinophyceae, Heterotrikea, Cyanophyceae, Euglenoidea and Oligohymenophorea. Based on the value of IP (Index of Preponderance) the main food of oysters is obtained from the class Bacillariophyceae, namely the genus Synedra sp. at stations 1 and 2, while at station 3 the main food was oysters, namely the genus Navicula sp. Keywords: Eating Habits, Oysters, Alue Naga, Index of Preponderance