Document Detail


Oscheius tipulae, a widespread hermaphroditic soil nematode, displays a higher genetic diversity and geographical structure than Caenorhabditis elegans.
MedLine Citation:
PMID:  18284567     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The nematode Oscheius tipulae belongs to the same family (Rhabditidae) as the model species Caenorhabditis elegans. Both species reproduce through self-fertilizing hermaphrodites and facultative males. Recent studies have shown that the self-fertile C. elegans and C. briggsae displayed a 20-fold lower genetic diversity than the male-female species C. remanei. Several explanations have been put forward to account for this difference, including their mode of reproduction and dynamic population structure. Here, we present the results of extensive worldwide sampling of O. tipulae, which we previously used as a laboratory organism for developmental genetics. We found that O. tipulae is much more widespread and common in soil throughout the world than Caenorhabditis species. We analysed 63 O. tipulae isolates from several continents using amplified fragment length polymorphism (AFLP). We found that O. tipulae harbours a 5-fold higher genetic diversity than C. elegans and C. briggsae. As in C. elegans, a high proportion of this diversity was found locally. Yet, we detected significant geographical differentiation, both at the worldwide scale with a latitudinal structure and between three localities in France. In summary, O. tipulae exhibited significantly higher levels of genetic diversity and large-scale geographical structure than C. elegans, despite their shared mode of reproduction. This species difference in genetic diversity may be explained by a number of other differences, such as population size, distribution, migration and dynamics. Due to its widespread occurrence and relatively high genetic diversity, O. tipulae may be a promising study species for evolutionary studies.
Authors:
Dorothée Baïlle; Antoine Barrière; Marie-Anne Félix
Related Documents :
12919487 - Hybrid origin of a cichlid population in lake malawi: implications for genetic variatio...
19754507 - Population genetic analysis reveals a homoploid hybrid origin of stephanomeria diegensi...
24696367 - C-reactive protein gene and toll-like receptor 4 gene polymorphisms can relate to the d...
23228687 - Foxp3 -3279 and ivs9+459 polymorphisms are associated with genetic susceptibility to my...
16917677 - Pharmacogenetic determinants of variability in lipid-lowering response to pravastatin t...
19781797 - Ryanodine receptor (ryr2) mutations in sudden cardiac death: studies in extended pedigr...
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-02-13
Journal Detail:
Title:  Molecular ecology     Volume:  17     ISSN:  1365-294X     ISO Abbreviation:  Mol. Ecol.     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-03-06     Completed Date:  2008-04-01     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9214478     Medline TA:  Mol Ecol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1523-34     Citation Subset:  IM    
Affiliation:
Institut Jacques Monod, CNRS-Universities of Paris 6 and 7, Tour 43, 2 place Jussieu, 75251 Paris cedex 05, France.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Amplified Fragment Length Polymorphism Analysis
Animals
Caenorhabditis elegans / genetics*
Female
Genetic Variation*
Geography*
Hermaphroditism
Linkage Disequilibrium
Male
Population Dynamics
Rhabditida / genetics*
Soil*
Chemical
Reg. No./Substance:
0/Soil

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


Previous Document:  Sequencing goes 454 and takes large-scale genomics into the wild.
Next Document:  Monoclonal antibodies reveal changes in predator efficiency with prey spatial pattern.