English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28607/40644
Visitors : 4770165      Online Users : 222
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/37825

Title: Factors influencing variations of oxygen content in nests of green sea turtles during egg incubation with a comparison of two nesting environments
Authors: I-Jiunn Cheng;Chia-hua Lin;Cheng-Tsung Tseng
Contributors: 國立台灣海洋大學:海洋生物研究所
Keywords: Clutch size;Embryogenesis;Green sea turtle;Incubation microenvironment;Lanyu Island;Local weather pattern;Nest oxygen dynamics;Wan-an Island
Date: 2015-10
Issue Date: 2016-05-12T07:39:22Z
Publisher: Journal of Experimental Marine Biology and Ecology
Abstract: Abstract:Several biotic and abiotic factors can influence nest oxygen content during embryogenesis of sea turtle eggs. These factors were evaluated during each stage of egg development on Lanyu Island, Taitung County, Taiwan. We measured oxygen content of 14 nests in 2010. Oxygen in the adjacent sand, total and viable clutch sizes, air, sand and nest temperatures and sand characters of each nest were also determined. The study found that the oxygen available to an egg differs within the clutch, resulted in this value being highest in the upper layer and decreased with depth. Metabolic heat increased with incubation and reached the peak value in the middle or late stage of incubation. This result in the oxygen content was highest in the early incubation stage and decreased afterwards. Clutch size is the major factor that influences the nest oxygen content during the incubation. Hatching success was found to decrease with decrease of average oxygen partial pressure in the nest. Comparison between Wan-an Island of Penghu Archipelago and Lanyu Island of Taitung County showed that the incubation microenvironment and the local weather pattern are the major factors responsible for differences in oxygen content during embryo development. It is possible that the nesting beach loyalty result in different adaptive morphological characters of hatchlings is produced from each island.
Relation: 471,pp.104-111
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/37825
Appears in Collections:[海洋生物研究所] 期刊論文

Files in This Item:

File Description SizeFormat

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback