PENGARUH BEDA WAKTU PENGAMBILAN TELUR TERHADAP DAYA TETAS TELUR PENYU HIJAU Chelonia mydas L

Abstract

Reproduction in marine turtle occurs within three general constrainst. Among them hatchlings must emerge into conditions that are conducive to their survival. Hatchlings face two problems if they emerge during the day : lethal temperatures and predators. Clutches of sea turtle eggs typically have high hatching success unless external factors (e.g., predation, microbial infection, environmental change etc). The natural hatch rate for green turtles to be low, and suggested inherent fertility factors as probable cause of loss. Until artificial incubation of green turtle studying necessary. Although several reports state that moving sea turtles eggs during incubations results in poor survival, the state time of onset of this sensitivity has varied. Large variations in hatchability of eggs shipped in previous seasons prompted the series of experiments reported herein. The research is to investigate the effect of movement on hatchability of the green turtle, C.mydas. This research was conducted of the nest environment Pangumbahan, Sukabumi. Incubation of green turtle eggs was standardized throughout the turtle conservation and management programme. Eggs were taken from the nest Immediately after cessation of laying. Each fifty eggs was layed in the nest on artificial incubation with the time different of movement. Sensitivity was greatest early in the incubation ( 48 h) and did not totally abate after 20 day. They should not be moved till at least 20 days after deposition. Ada 3 faktor utama yang penting pada reproduksi penyu taut. satu diantaranya adalah kondisi sarang telur yang lebih balk untuk mendukung kelangsungan hidup mereka. Temperatur sarang dan predatorlah yang sangat mempengaruhi keberhasilan menetas bagi telur penyu. Keberhasilan menetas bagi telur penyu laut sangat bergantung pada kondisi eksternal seperti perubahan lingkungan, tingkat predasi dan infeksi microbial. Keberhasilan menetas di sarang alaml lebih rendah ketimbang sarang semi alami karena faktor-faktor tersebut. Berdasarkan hal tersebut perlu dilakukan pemindahan ke sarang semi alami yang lebih terkontrol. Penelitian tentang pengaruh perpindahan terhadap keberhasilan penetasan masih sangat sedikit. Hal ini perlu karena pada awal masa inkubasi, telur-telur penyu sangat sensitive terhadap adanya gerakan, goncangan maupun gangguan dari luar. Penelitian dilakukan di pantai peneluran Pangumbahan ,Sukabumi. Telur penyu hijau, C mydas dari sarang alaml dipindahkan ke sarang semi alami dengan perbedaan waktu pemindahan. Telur penyu hijau sangat sensitive pada 48 jam setelah deposisi . Pemindahan dapat dilakukan dengan keberhasilan menetas yang lebih balk setelah hari ke 20 deposisi.