Rekruitment Tropical Box Mussels, Septifer Bilocularis In Tiwoho Coastal Area

The purpose of this study was to determine 1) the types of substrates on which Septiver attached, and 2) the number of tropical boxes mussel recruits at different size aggregation. The meter was placed on one side of the mussel aggregation, and it was pulled up to the other side through the middle of the mussel aggregation. There were two different sizes of aggregation, namely small aggregation with a diameter of 5-25 cm, and large aggregation with a diameter > 1 meter. Aggregation samples were carried out by placing a core with a diameter of 10 cm in the center of the small mussel aggregation, then at the edge and the middle position of the large aggregation. All aggregation in the core was removed and inserted into the labeled sample plastic. The sampling was applied 4 times on different mussel aggregations, as replication. The results show that young mussels (recruiters) are attached to algae stems, mussel byssus, and dead hard coral. The number of mussel recruits was square-root transformed to obtain homogeneity data, before being tested using One-Way Analysis of Variance. The results showed that the recruitment of Septifer was influenced by the size of the aggregation (P 0.05). Discussion of different factors affecting attachment occurs.Keywords: box mussel; Septifer; recruit; aggregation; larva; TiwohoAbstrakTujuan penelitian ini adalah untuk mengetahui 1) jenis-jenis substrat yang menjadi tempat menempel kerang mudah Septiver, dan 2) jumlah rekruit kerang kotak tropis pada ukuran aggregasi kerang yang berbeda. Pengukuran ukuran aggregasi kerang dilakukan dengan meletakkan meteran pada salah satu sisi aggregasi kerang, selanjutnya meteran ditarik sampai ke sisi yang lain melewati bagian tengah aggregasi kerang. Ada 2 jenis ukuran aggregasi, yaitu aggregasi kecil dengan ukuran diameter aggregasi 5 – 25 cm, dan aggregasi besar, yaitu dengan ukuran diameter aggregasi kerang > 1 meter. Pengukuran diameter aggregasi dilakukan 4 kali, masing-masing dengan aggregasi berbeda, sebagai ulangan. Sampel aggregasi kerang dilakukan dengan meletakkan kor (‘cor’) dengan d