Abstrak

Pulau Denawan merupakan wilayah tidak berpenghuni yang berada pada Kecamatan Pulau Sembilan Kabupaten Kotabaru Provinsi Kalimantan Selatan. Penyu hijau (Chelonia mydas) terdaftar sebagai spesies yang terancam punah oleh International Union for Conservation (IUCN). Penetasan semi alami memiliki daya tetas yang optimal apabila persentase keberhasilan penetasan mencapai 80%. Metode penelitian yang digunakan, antara lain: penentuan lokasi, pengambilan data suhu sarang, pengambilan data kelembaban dan pH sarang serta pengambilan data tukik. Persentase keberhasilan menetas telur peyu hijau (Chelonia mydas) pada sarang alami 1 sebanyak 74% dan pada sarang alami 2 sebanyak 97%. Sedangkan, pada sarang semi alami 1 sebanyak 60% dan pada sarang semi alami 2 sebanyak 66%. Nilai rata-rata persentase penetasan pada sarang alami sebanyak 85% dan pada sarang semi alami sebanyak 63%. Pada sarang alami suhu serta kelembaban sarang lebih terjaga karena pada sarang alami tidak ada naungan, sedangkan pada sarang semi alami sebaliknya.

Kata Kunci: Pulau Denawan, Chelonia mydas, Sarang Alami, Sarang Semi Alami, Persentase Penetasan.

Abstract

Denawan Island is an uninhabited area located in Pulau Sembilan District Kotabaru District South Kalimantan Province. The green turtle (Chelonia mydas) is listed as an endangered species by the International Union for Conservation (IUCN). Semi-natural hatchery has optimal hatchability if the percentage of hatching success reaches 80%. The research methods used included: location determination, nest temperature data collection, nest moisture and pH data collection, and hatchling data collection. The percentage of success in hatching green turtle eggs (Chelonia mydas) in natural nest 1 was 74% and in natural nest 2 was 97%. Meanwhile, in the semi-natural nest 1 was 60% and in the semi-natural nest 2 was 66%. The average percentage of hatching in natural nests was 85% and 63% in semi-natural nests. In natural nests, the temperature and humidity of the nests are better maintained because in natural nests there is no shade, while in semi-natural nests the opposite is true.

Keywords: Denawan Island, Chelonia mydas, Natural Nest, Semi Natural Nest, Hatch Percentage