Document Detail


Correlated evolution of male and female morphologles in water striders.
MedLine Citation:
PMID:  12093029     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Sexually antagonistic coevolution may be an important force in the evolution of sexual dimorphism. We undertake a comparative study of correlated evolution of male and female morphologies in a clade of 15 water strider species in the genus Gerris (Heteroptera: Gerridae). Earlier studies have shown that superfluous matings impose costs on females, including increased energetic expenditure and predation risk, and females therefore resist males with premating struggles. Males of some species possess grasping structures and females of some species exhibit distinct antigrasping structures, which are used to further the interests of each sex during these premating struggles. We use this understanding, combined with coevolutionary theory, to derive a series of a priori predictions concerning both the types of traits in the two sexes that are expected to coevolve and the coevolutionary dynamics of these traits expected under sexually antagonistic coevolution. We then assess the actual pattern of correlated evolution in this clade with new morphometric methods combined with standard comparative techniques. The results were in agreement with the a priori predictions. The level of armament (different abdominal structures in the two sexes) was closely correlated between the sexes across species. Males are well adapted to grasping females in species in which females are well adapted to thwart harassing males and vice versa. Furthermore, our comparative analyses supports the prediction that correlated evolution of armament in the two sexes should be both rapid and bidirectional.
Authors:
Göran Arnqvist; Locke Rowe
Related Documents :
9364789 - No evidence of sperm selection by female common shrews.
8278809 - Benefit to male sailfin mollies of mating with heterospecific females.
9279899 - Density-dependent selection on horn phenotype in soay sheep.
23614369 - Cytochemistry of peripheral blood leukocytes in thoroughbred foals.
17796729 - Courtship disruption modifies mate choice in a lek-breeding bird.
11392139 - Factors affecting reproduction and the importance of adult size on reproductive output ...
25346919 - New korean reference for birth weight by gestational age and sex: data from the korean ...
8378809 - An acculturation scale for southeast asians.
21300569 - Megacystis secondary to congenital urethral stricture.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Evolution; international journal of organic evolution     Volume:  56     ISSN:  0014-3820     ISO Abbreviation:  Evolution     Publication Date:  2002 May 
Date Detail:
Created Date:  2002-07-02     Completed Date:  2002-12-20     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0373224     Medline TA:  Evolution     Country:  United States    
Other Details:
Languages:  eng     Pagination:  936-47     Citation Subset:  IM    
Affiliation:
Department of Animal Ecology, Evolutionary Biology Centre, University of Uppsala, Sweden. goran.arnqvist@ebc.uu.se
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Body Constitution
Evolution*
Female
Genetic Variation
Heterophyidae / anatomy & histology*,  classification*
Male
Phylogeny*
Sex Characteristics

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  The role of parental age effects on the evolution of aging.
Next Document:  Evolution after the flood: phylogeography of the desert fish Utah Chub.