Rouli, Megan and Dr. Agung Pramana W, M., M.Si (2019) Penetasan Telur Penyu Lekang (Lepidochelys olivacea) dengan Perbedaan Kedalaman Sarang Pasir di Sarang Semi Alami Turtle Conservation and Education Center Bali. Sarjana thesis, Universitas Brawijaya.
Abstract
Kedalaman pasir merupakan faktor keberhasilan penetasan telur penyu dan kondisi tukik yang dihasilkan karena memengaruhi suhu inkubasi sarang. Penelitian ini bertujuan untuk mengetahui pengaruh kedalaman pasir terhadap keberhasilan penetasan telur penyu, ukuran tukik dan panjang lengan depan untuk penentuan jenis kelamin. Pengumpulan dilakukan telur penyu Lekang dengan monitoring. Pengamatan daya tetas telur dilakukan penanaman 10 telur untuk satu sarang semi alami dengan tiga perlakuan kedalaman pasir dan tiga pengulangan, yaitu sedalam 25 cm, 30 cm, dan 45 cm. Kategori tukik dan telur diamati untuk penentuan keberhasilan penetasan. Pengamatan faktor lingkungan sarang semi alami dilakukan dengan mengukur suhu pasir, kelembaban pasir, dan ukuran pasir. Morfometrik tukik dan panjang lengan depan diukur untuk menentukan jenis kelamin tukik. Data persentase hatching rate, survival rate, nisbah kelamin, dan data morfometrik tukik dianalisis dengan one-way ANOVA dan uji Tukey. Kedalaman pasir berpengaruh terhadap keberhasilan penetasan telur penyu, ukuran tukik dan jenis. Kedalaman 30 cm memiliki persentase keberhasilan tetas tertinggi karena memiliki suhu yang optimal dan kelembaban. Kedalaman 45 cm memiliki ukuran tukik terbesar karena didapatkan suhu maskulin sehingga masa inkubasi lebih panjang dan banyak yolk yang dikonversi menjadi jaringan tukik dan menghasilkan ukuran tubuh lebih besar. Nisbah kelamin pada kedalaman 25 cm total seluruhnya adalah betina dan pada kedalaman 45 cm total seluruhnya adalah jantan, sedangkan pada kedalaman 30 cm diprediksi terdapat jenis kelamin betina dan jantan.
English Abstract
Sand depth is a success factor in hatching sea turtle eggs and hatchling conditions that are produced because it affects the temperature of nest incubation. This study aims to determine the effect of sand depth on the success of turtle egg hatching, hatchling size and forearm length for sex determination. Collecting young turtle eggs was carried out by monitoring. Observation of hatchability of eggs was carried out by planting 10 eggs for one semi-natural nest with three treatments of sand depth and three repetitions, namely 25 cm, 30 cm, and 45 cm deep. Hatchlings and egg categories were observed for the determination of hatching success. Observation of the environmental factors of semi-natural nests is done by measuring the temperature of sand, sand moisture, and the size of sand. Hatchling morphometrics and the length of the front arm are measured to determine the sex of the hatchlings. Data on percentage of hatching rate, survival rate, sex ratio, and hatchling morphometric data were analyzed by one-way ANOVA and Tukey test. The depth of the sand affects the success of turtle egg hatching, the size of the hatchlings and the species. The 30 cm depth has the highest percentage of tetas success because it has the optimal temperature and humidity. The 45 cm depth has the largest hatchling size because it has a masculine temperature so that the incubation period is longer and many yolk are converted into hatchlings and produce a larger body size. The sex ratio at a depth of 25 cm in total was entirely female and at a depth of 45 cm the total total was male, while at a depth of 30 cm there was predicted to be female and male.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2019/352/052001507 |
| Uncontrolled Keywords: | hatching rate, jenis kelamin, Lepidochelys olivacea, pasir, semi alami. hatching rate, sex ratio, Lepidochelys olivacea, sand, semi-natural. |
| Subjects: | 500 Natural sciences and mathematics > 597 Cold-blooded vertebrates > 597.9 Reptilia (Reptiles) > 597.92 Chelonia > 597.928 Chelonioidea (Sea turtles) |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Biologi |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 02 Oct 2020 02:50 |
| Last Modified: | 26 Aug 2022 07:41 |
| URI: | http://repository.ub.ac.id/id/eprint/179833 |
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