KORELASI ANTARA UMUR INKUBASI DENGAN TAHAP PERKEMBANGAN EMBRIO Chelonia mydas YANG DIINKBASI PADA SUHU INKUBASI YANG BERBEDA
DOI:
10.29303/jpm.v8i1.53Published:
2013-03-01Issue:
Vol. 8 No. 1 (2013): MaretArticles
Downloads
How to Cite
Downloads
Metrics
Abstract
Abstrak: Kecepatan perkembangan embrio Chelonia mydas dipengaruhi oleh suhu inkubasi. Embrio yang diinkubasi pada suhu 31ñ1ðC (SF)àmencapai tahap 17 pada umur inkubasi 22-23 hari, tahap 19 pada umur inkubasi 26 hari, dan tahap 22 pada umur inkubasi 31 hari. Embrio yang diinkubasi pada suhu 26ñ1ðC (SM)àmencapai tahap tahap 17 pada umur inkubasi 39-40 hari, tahap 19 pada umur inkubasi. 45 hari, dan tahap 22 pada umur inkubasi 52-53 hari. Hasil pengamatan terhadap struktur histologis gonad embrio menunjukkan bahwa gonad embrio tahap 17, 19, dan tahap 22 telah berupa gonad indiferen. Gonad-gonad pada tahap tersebut sudah dapat dibedakan menjadi bagian korteks dan bagian medula. Bagian korteks berupa epitel selapis silindris, sedangkan bagian medula mengandung jaringan ikat dan kelompok-kelompok sel. Bakal sel kelamin ditemukan pada bagian medula dan korteks. Dengan demikian dapat disimpulkan bahwa periode TSP Chelonia mydas yang diinkubasi pada suhu 31ñ1ðC (SF)ààterentang dari umur inkubasi 22 hari hingga umur inkubasi 31 hari, sedangkan periode TSP Chelonia mydas yang diinkubasi pada suhu 26ñ1ðC (SF)ààterentang dari umur inkubasi 39 hari hingga umur inkubasi 53 hari.
Kata kunci: Chelonia mydas, TSP, umur inkubasi, suhu feminisasi, suhu maskulinisasi
ÃÂ
Abstract: Embryonic development Rate of Chelonia mydas is affected by incubation temperature . The embryos were incubated at 31 ñ 1ðC ( FT ) reached embryonic stage of 17th at 22-23rd of incubation day, embryonic stage of 19th at 26th of incubation day, and embryonic stage of 22nd at 31st of incubation day. The embryos were incubated at 26 ñ 1ðC ( MT ) reached embryonic stage 17 th at 39-40th incubation day , embryonic stage 19 th at 45 th day of incubation , and embryonic stage 22nd at 52-53 rd incubation day. Observations on the histological structure of the gonadal embryos showed that the embryonic gonad stages 17th , 19th , and 22nd have been in indifferent stage. Gonads at this stage can be distinguished àin two parts, cortex and medulla. Cortex as a layer of cylindrical epithelium, while the medulla consist of connective tissue andàgroups of cell. Primordial Germ Cells are found both in medulla and cortex . It can be concluded that the TSP of Chelonia mydas were incubated at 31 ñ 1ðC ( FT ) extended from 22nd ofàincubation day until the 31st of incubation day , whereas the TSP of Chelonia mydas were incubated at 26 ñ 1ðC (MT) extended from 39th ofàincubation day until the 53rd of incubation day.
Key words: Chelonia mydas, TSP, feminization temperature, maskulinization temperatureLicense
The following terms apply to authors who publish in this journal:
1. Authors retain copyright and grant the journal first publication rights, with the work simultaneously licensed under a Creative Commons Attribution License 4.0 International License (CC-BY License) that allows others to share the work with an acknowledgment of the work's authorship and first publication in this journal.
2. Authors may enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., posting it to an institutional repository or publishing it in a book), acknowledging its initial publication in this journal.
3. Before and during the submission process, authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website), as this can lead to productive exchanges as well as earlier and greater citation of published work (See The Effect of Open Access).
