Title page for etd-0916117-133423


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URN etd-0916117-133423
Author Kai-ze Wang
Author's Email Address No Public.
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Department Department of Oceanography
Year 2017
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The symbiotic relationship between mud snail (Nassarius albescens) and hydroids (Cytaeis sp.) in Dongsha
Date of Defense 2017-10-11
Page Count 45
Keyword
  • histology
  • hydroid
  • nassariid
  • 13C & 15N stable isotope
  • symbiosis
  • Abstract Few studies in symbiosis between snail and hydroids had been examined in Japan, Indonesia and Africa. This study aimed to investigate benefits in the relationship between the snail Nassarius albescens and hydroid Cytaeis sp. through 13C and 15N stable isotope approach, behavior experiment and histological examination on siphon and foot tissue. Stable isotope results showed that hydroids ingested sediments as their food sources. They probably obtained more food by host movement than non-symbiotic hydroids. The results of behavior experiments supported that N. albescens had high tolerance to nematocysts, while N. quadrasi avoided the hydroids when attached. Therefore, it is proposed that N. albescens had higher competition ability in foraging than that of N. quadrasi. Additionally, high tolerance to nematocysts was not resulted from difference in siphon and foot structure based on histological examination. In brief, this study supports the symbiotic relationship between N. albescens and hydroids is mutualism.
    Advisory Committee
  • Lo, Wen-tseng - chair
  • Chiu, Yuh-wen - co-chair
  • Liu, Li-lian - advisor
  • Files
  • etd-0916117-133423.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2017-10-16

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