| The tempo and mode of three-dimensional morphological evolution in male reproductive structures. | |
| | |
MedLine Citation:
|
PMID: 18419524 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Various evolutionary forces may shape the evolution of traits that influence the mating decisions of males and females. Phenotypic traits that males and females use to judge the species identify of potential mates should evolve in a punctuated fashion, changing significantly at the time of speciation but changing little between speciation events. In contrast, traits experiencing sexual selection or sexually antagonistic interactions are generally expected to change continuously over time because of the directional selection pressures imposed on one sex by the actions of the other. To test these hypotheses, we used spherical harmonic representations of the shapes of male mating structures in reconstructions of the evolutionary tempo of these structures across the history of the Enallagma damselfly clade. Our analyses show that the evolution of these structures is completely consistent with a punctuated model of evolutionary change and a constant evolutionary rate throughout the clade's history. In addition, no interpopulation variation in shape was detected across the range of one species. These results indicate that male mating structures in this genus are used primarily for identifying the species of potential mates and experience little or no selection from intraspecific sexual selection or sexual antagonism. The implications of these results for speciation are discussed. |
| | |
Authors:
|
Mark A McPeek; Li Shen; John Z Torrey; Hany Farid |
Related Documents
:
|
17887974 - Antagonistic selection between adult thorax and wing size in field released drosophila ... 17148314 - Kin competition promotes dispersal in a male pollinating fig wasp. 7953464 - Effects of pre-industrial human activities on climate. 21053914 - Synthesis and application of pyridine-based ambipolar hosts: control of charge balance ... 6841274 - Middle-ear mechanics in the cf-bat rhinolophus ferrumequinum. 16811594 - Performance in multiple fixed-interval schedules. |
Publication Detail:
|
Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: The American naturalist Volume: 171 ISSN: 1537-5323 ISO Abbreviation: Am. Nat. Publication Date: 2008 May |
Date Detail:
|
Created Date: 2008-04-18 Completed Date: 2008-06-02 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 2984688R Medline TA: Am Nat Country: United States |
Other Details:
|
Languages: eng Pagination: E158-78 Citation Subset: IM |
Affiliation:
|
Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA. mark.mcpeek@dartmouth.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Body Weights and Measures Evolution* Genitalia, Male / anatomy & histology* Insects / anatomy & histology* Male Models, Biological Phylogeny Sex Characteristics* Sex Preselection |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: An empirical test of a diffusion model: predicting clouded apollo movements in a novel environment.
Next Document: The research agenda of the National Institute of Allergy and Infectious Diseases for antimicrobial r...