dc.contributor.advisor | Noltie, Douglas B. (Douglas Brian) | eng |
dc.contributor.author | Witte, Christopher C. | eng |
dc.date.issued | 2008 | eng |
dc.date.submitted | 2008 Fall | eng |
dc.description | The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. | eng |
dc.description | Title from PDF of title page (University of Missouri--Columbia, viewed on October 6, 2009). | eng |
dc.description | Thesis advisor: Dr. Douglas B. Noltie. | eng |
dc.description | M.S. University of Missouri--Columbia 2008. | eng |
dc.description.abstract | The Topeka shiner (Notropis topeka) is a federally-listed endangered cyprinid species native to small headwater prairie streams in the mid-west of the United States. It generally spawns over and around sunfish (Lepomis sp.) nests. The objectives of the present studies were to assess the effects that temperature, photoperiod, and substrate size have on the Topeka shiner's maturation and reproductive behavior. A longer photoperiod yielded greater male GSIs and female final weights and GSIs than a shorter photoperiod. The results generally indicated that 31[degrees]C exceeded the optimum temperature. Ovarian histology indicated that spawning had likely occurred in all treatments by the end of the experiment. The frequency of occurrence of reproductive behaviors was greater in the morning and decreased through the day. Substrate utilization by Topeka shiners in the absence of sunfish was tested to determine the shiner's fundamental preference. Fine substrates were chosen over Small Gravel, Large Gravel, Small Cobble, and the Bare Floor of the experimental tank. This preference may influence which sunfish nests are utilized, given that nest substrate characteristics differ both between sunfish species and within species across spawning site locations. | eng |
dc.description.bibref | Includes bibliographical references. | eng |
dc.identifier.merlin | b71578183 | eng |
dc.identifier.oclc | 456291319 | eng |
dc.identifier.uri | https://hdl.handle.net/10355/5779 | |
dc.identifier.uri | https://doi.org/10.32469/10355/5779 | eng |
dc.language | English | eng |
dc.publisher | University of Missouri--Columbia | eng |
dc.relation.ispartofcommunity | University of Missouri--Columbia. Graduate School. Theses and Dissertations | eng |
dc.rights | OpenAccess. | eng |
dc.rights.license | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License. | |
dc.subject.lcsh | Topeka shiner -- Growth | eng |
dc.subject.lcsh | Topeka shiner -- Effect of light on | eng |
dc.subject.lcsh | Topeka shiner -- Reproduction | eng |
dc.subject.lcsh | Topeka shiner -- Effect of habitat modification on | eng |
dc.subject.lcsh | Rare fishes | eng |
dc.subject.lcsh | Endangered species | eng |
dc.title | Effects of temperature, photoperiod, and substrate on the maturation and reproductive behavior of the Topeka shiner (Notropis topeka) | eng |
dc.type | Thesis | eng |
thesis.degree.discipline | Fisheries and wildlife sciences (MU) | eng |
thesis.degree.grantor | University of Missouri--Columbia | eng |
thesis.degree.level | Masters | eng |
thesis.degree.name | M.S. | eng |