Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus)
Includes bibliographical references (leaves 184-210).
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Biological Sciences
2014
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613186955411457 |
|---|---|
| access_status_str | Open Access |
| author | Stoffberg, Samantha |
| author2 | Jacobs, David S |
| author_browse | Jacobs, David S Stoffberg, Samantha |
| author_facet | Jacobs, David S Stoffberg, Samantha |
| author_sort | Stoffberg, Samantha |
| collection | Thesis |
| description | Includes bibliographical references (leaves 184-210). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/6211 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:08.355Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Biological Sciences |
| publisherStr | Department of Biological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/6211 Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus) Stoffberg, Samantha Jacobs, David S Zoology Includes bibliographical references (leaves 184-210). Horseshoe bats (genus Rhinolophus) belong to the Old World family Rhinolophidae. They are high-duty cycle bats and many species use echolocation calls dominated by high frequencies (above 60 kHz). Much is known about how they use their echolocation calls, but very little is known about why these bats use echolocation calls of such high frequencies, or what has caused the divergence in echolocation call frequency between rhinolophid species. I test five hypotheses that may explain the evolution and divergence of high frequencies in the horseshoe bats: (1) The Allotonic Frequency Hypothesis - echolocation frequencies outside of moth hearing range (allotonic frequencies) have evolved in response to moth hearing; (2) The Allometry Hypothesis - highfrequency echolocation calls are simply a function of body size; (3) The Acoustic Adaptation Hypothesis - selection pressures linked to habitat structure have shaped the evolution of high-frequency echolocation calls; (4) The Foraging Habitat Hypothesis - foraging style and habitat of a bat should correspond to echolocation call frequency and wing design; and (5) The Acoustic Communication Hypothesis - echolocation frequencies evolved under selection pressure which eliminated overlap among sympatric species of rhinolophids, within the context of effective communication. 2014-08-13T14:13:35Z 2014-08-13T14:13:35Z 2007 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/6211 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Zoology Stoffberg, Samantha Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus) |
| thesis_degree_str | Doctoral |
| title | Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus) |
| title_full | Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus) |
| title_fullStr | Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus) |
| title_full_unstemmed | Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus) |
| title_short | Molecular phylogenetics and the evolution of high-frequency echolocation in horseshoe bats (Genus Rhinolophus) |
| title_sort | molecular phylogenetics and the evolution of high frequency echolocation in horseshoe bats genus rhinolophus |
| topic | Zoology |
| url | http://hdl.handle.net/11427/6211 |
| work_keys_str_mv | AT stoffbergsamantha molecularphylogeneticsandtheevolutionofhighfrequencyecholocationinhorseshoebatsgenusrhinolophus |