Thesis
Effects of domestication on behavior in clonal lines of hatchery-reared rainbow trout, Oncorhynchus mykiss
Washington State University
Master of Science (MS), Washington State University
2008
Handle:
https://hdl.handle.net/2376/101583
Abstract
There are currently nine clonal lines of rainbow trout propagated in the Thorgaard lab. This experiment was designed to determine if these clonal lines, which have varying degrees of domestication, differ in their behavior. The hypothesis was that behavioral differences among the lines are related to the level of domestication. The samples used for this study included clonal lines created from fish whose progenitors had been in a hatchery setting for varying lengths of time (more than 20 generations, 2-20 generations and zero generations (produced from gametes collected directly from wild fish)). The behavioral assays included mean swim level, activity level, feeding latency, feeding frequency, type of startle response and post-startle mean swim and activity levels. All assays showed significant differences between strains, though not all strains showed the patterns we would have expected due to their level of domestication, nor were all strains consistent across all behaviors. Thus this study shows that it is not possible to predict behavioral patterns based on domestication history alone.
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Details
- Title
- Effects of domestication on behavior in clonal lines of hatchery-reared rainbow trout, Oncorhynchus mykiss
- Creators
- Sharon M. Villagecenter
- Contributors
- Gary H. Thorgaard (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Biological Sciences, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525019001842
- Language
- English
- Resource Type
- Thesis