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Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer)
Dissertation (MSc (Zoology))--University of Pretoria, 2006.
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University of Pretoria
2013
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| _version_ | 1867613712150429696 |
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| access_status_str | Open Access |
| author2 | Ferguson, J. Willem H. |
| author_browse | Ferguson, J. Willem H. |
| author_facet | Ferguson, J. Willem H. |
| collection | Thesis |
| dc_rights_str_mv | © 2006, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Zoology))--University of Pretoria, 2006. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/26230 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:40:30.132Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/26230 Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer) Ferguson, J. Willem H. lverburgt@zoology.up.ac.za Verburgt, Luke Mate recognition Female preference Sexual selection Acoustic signals Cricket UCTD Dissertation (MSc (Zoology))--University of Pretoria, 2006. Sexual selection is a frame of reference that attempts to explain exaggerated signaling traits, including acoustic signals between male and female animals. Contemporary studies in the field of sexual selection are focused on the evolution of female mating preferences, with particular emphasis being placed on the good genes models of sexual selection. Here I investigate whether sexual selection is in operation in the acoustic communication system of the field cricket, Gryllus bimaculatus. Through development of new methodology I show that female crickets have a distinct and repeatable preference and selectivity for certain male song traits. For sexual selection to operate in acoustic communication systems, males must advertise some aspect of their phenotype that will influence female choice. I demonstrate that the basis for arguments invoking sexual selection for spectral song traits in a sister species, G. campestris, which is that tegmen harp area predicts song frequency, is an invalid assumption for sound production in G. bimaculatus. As a result of this finding I investigated what aspects of male song were condition- and morphology-dependent. Temporal and spectral male song traits did not convey information regarding body condition, body size or the ability to withstand developmental instability (as indicated by fluctuating asymmetry). I was unable to detect handicap sexual selection for spectral characteristics of male song despite repeatable female preference for male song frequency. Furthermore, female preference for spectral bandwidth of male song, thought to be a sexually selected trait, was shown to be governed by preference for frequency and therefore not a distinct preference. The lack of detectable sexual selection, together with observed patterns of phenotypic variation in signals and the equivalent response system, suggest that some of the male song traits function for mate recognition. However, sexual selection for call traits not considered here (e.g. duration of calling) is probable. Zoology and Entomology unrestricted 2013-09-07T04:00:54Z 2007-07-12 2013-09-07T04:00:54Z 2006-09-07 2006 2007-07-12 Dissertation Verburgt, L 2006, Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer), MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/26230 > http://hdl.handle.net/2263/26230 http://upetd.up.ac.za/thesis/available/etd-07122007-133806/ © 2006, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Mate recognition Female preference Sexual selection Acoustic signals Cricket UCTD Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer) |
| title | Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer) |
| title_full | Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer) |
| title_fullStr | Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer) |
| title_full_unstemmed | Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer) |
| title_short | Female response and male signals in the acoustic communication system of the field cricket, Gryllus bimaculatus (De Geer) |
| title_sort | female response and male signals in the acoustic communication system of the field cricket gryllus bimaculatus de geer |
| topic | Mate recognition Female preference Sexual selection Acoustic signals Cricket UCTD |
| url | http://hdl.handle.net/2263/26230 http://upetd.up.ac.za/thesis/available/etd-07122007-133806/ |