Electronic Theses and Dissertation

Lingula anatina Lamarck, 1801 termasuk dalam filum Brachiopoda yang telah ada sejak Fanerozoikum dan dikenal sebagai fosil hidup. Lingula anatina Lamarck, 1801 tinggal di daerah pasang surut dan menyukai daerah yang tenang. Hingga saat ini, sangat sedikit penelitian yang dilakukan tentang Pola Pertumbuhan Lingula Anatina Lamarck, 1801 di Perairan Utara Aceh. Penelitian ini bertujuan untuk mengetahui pola pertumbuhan Lingula anatina Lamarck, 1801 melalui pendekatan distribusi ukuran, hubungan panjang-berat, dan faktor kondisi di Perairan Utara Aceh. Penelitian ini dilakukan pada bulan April sampai Desember 2021 yang berlokasi di Perairan Utara Aceh yaitu Pantai Alue Naga, Pantai Syiah Kuala, Pantai Kuala Cangkoi, dan Pantai Ujung Pancu. Metode yang digunakan dalam penelitian ini adalah purposive sampling. Hasil penelitian menunjukkan bahwa rata-rata sebaran ukuran kelas panjang lingula anatina Lamarck, 1801 yang ditemukan adalah 35,69 mm. Hubungan panjang dan berat Lingula anatina Lamarck, 1801 di perairan Aceh Utara menunjukkan pola alometrik negatif dan isometrik. Selanjutnya, Faktor kondisi Perairan Aceh Utara adalah 1 yang menunjukkan Lingula anatina Lamarck, 1801 dalam kondisi gemuk.

Kata Kunci : Lingula anatina Lamarck, 1801, Pola Perumbuhan, Fosil hidup. 

Lingula anatina Lamarck, 1801 belongs to the phylum Brachiopods which has been existed since the Phanerozoic and are known as living fossils. Lingula anatina Lamarck, 1801 lived in tidal areas and liked quiet areas. Until now, very little research has been done on the growth pattern Lingula Anatina Lamarck, 1801 in the North Waters of Aceh. The purpose of this research is to determine the growth pattern of Lingula anatina Lamarck, 1801 through size distribution approach, length-weight relationship, and condition factors in the northern waters of Aceh. This research was conducted from April to December 2021 which is located in the northern waters of Aceh, namely Alue Naga beach, Syiah Kuala Beach, Kuala Cangkoi Beach, and Ujung Pancu Beach. The method used in this research is purposive sampling. The results showed that the average length class size distribution of Lingula anatina Lamarck, 1801 found was 35,69 mm. relationship between length and weight of Lingula anatina Lamarck, 1801 in the waters of North Aceh shows negative and isometric allometric patterns. Furthermore, the North Aceh Waters condition factor is 1, indicating Lingula anatina Lamarck, 1801 in a fat condition. Keywords: Lingula anatina Lamarck, 1801, Growth Pattern, Living fossil.