Title page for etd-0102116-142733


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URN etd-0102116-142733
Author Shih-yu Liang
Author's Email Address e1989105@hotmail.com
Statistics This thesis had been viewed 5340 times. Download 463 times.
Department Biological Sciences
Year 2015
Semester 1
Degree Master
Type of Document
Language English
Title Trail-Following Behavior of Land Snails
Date of Defense 2016-01-29
Page Count 34
Keyword
  • mating strategy
  • odor
  • mucus
  • trail-following
  • conspecific
  • pheromone
  • Abstract Pheromone is produced by animals and secreted in variously ways to form trails which can be used by conspecifics or between species. The functions for trail-following in terrestrial gastropod are aggregating, mating, predating, homing and energy saving. In this study, I used two species of terrestrial gastropod, Satsuma succincta and Cyclophorus friesianus, which are abundance in Mt. Shoushan, Kaohsiung, Taiwan to test three questions: (1) Do these land snails follow the chemical trail laid by conspecifics? (2) If followed, what kind of chemical trail would they follow? (3) Whether trail-following is a mating strategy for dioecious species? Every following behavior test I used two snails, marker for leaving trail and tracker for following trail. Both of the two species showed trail-following behavior, and there were no difference between two studying areas. S. succincta had trail-following behavior both by mucus and odor, but odor was the main chemical cue for C. friesianus. In test for sexual difference on trail-following behavior, although there were no significant difference between the different and same sex groups, the frequency was higher in different sex group and female followed by male was higher than other sexual combining pairs. This test supported that mucus trail-following might be a purpose for energy saving due to the trail overlapped about half of the marker’s trail.
    Advisory Committee
  • Chung-Chi Hwang - chair
  • Yuh-Wen Chiu - co-chair
  • Hsueh-Wen Chang - advisor
  • Files
  • etd-0102116-142733.pdf
  • Indicate in-campus at 1 year and off-campus access at 1 year.
    Date of Submission 2016-02-02

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