Title page for etd-0903107-150706


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URN etd-0903107-150706
Author Yu-kai Lin
Author's Email Address pica_pica_ljk@hotmail.com
Statistics This thesis had been viewed 4651 times. Download 642 times.
Department Biological Sciences
Year 2006
Semester 2
Degree Master
Type of Document
Language English
Title Nest-site Selection and Hatching Success of Three Tern Species Breeding in Baisha Islet, Penghu Island, Taiwan
Date of Defense 2007-06-25
Page Count 69
Keyword
  • nest-site selection
  • nest-site characteristics
  • hatching success
  • terns
  • Baisha Islet
  • Abstract Three tern species, Roseate Tern (Sterna dougalli), Bridled Tern (Sterna anaethetus) and Crested Tern (Sterna bergii) co-bred at Baisha islet, east-north of Penghu, in the summer of 2006. Each species favored different kind of environment for nesting. All Crested Terns nested in the flat plane with vegetation; Roseate Terns in the cliff near the vegetation, and Bridled Tern primarily nested near the vertical rock or under a rocky roof. The Crested Tern had the highest nesting density, and Bridled Tern nested loosely. The hatching success of Roseate (75%) and Crested Tern (73%) were significantly higher than that of Bridled Tern (30%). Roseate and Crested Tern laid eggs synchronously and had apparently two wave of egg laying and the breeding performances between early- and late-laying period were quite different. The relationship between hatching success and nest-site characteristics of the three species was investigated. The results revealed that hatching success of Roseate Tern increased with the number of walls and neighbors. Early-laying nests (79%) and central nests (72%) were more successful than late (11%) and edge nests (45%) of Roseate Terns. The laying-period was also important factors affecting hatching success of Crested Tern. Overall, the low hatching success of the late-laying nests may be due to the change of environmental conditions and the losing advantage of group breeding in the late season. The low hatching success of Bridled Tern was considered owing to the asynchronous laying pattern, loosely built nesting and weak parental behaviors.
    Advisory Committee
  • Chih-Min Hsu - chair
  • Yuan-Hsun Sun - co-chair
  • Hsueh-Wen Chang - advisor
  • Files
  • etd-0903107-150706.pdf
  • indicate in-campus access immediately and off_campus access in a year
    Date of Submission 2007-09-03

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