Linked Life Data

11737292

Source:http://linkedlifedata.com/resource/pubmed/id/11737292

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 4
pubmed:dateCreated
2001-12-12
pubmed:abstractText
In several insects, there appears to be a high fitness cost associated with insecticide resistance genes during the overwintering period. In order to understand when and how this cost operates, all mosquitoes entering a natural cave for overwintering were regularly sampled, and their resistance genes at two loci (Ester and Ace.1) were individually identified. During the main period of entry (October and November), susceptible mosquitoes were first observed, followed by resistant ones, this trend being similar for both loci. This observation is best explained by a migration phenomenon, northern and more susceptible populations starting to overwinter first, followed by southern and more resistant ones. During the remaining part of the winter (December-March), mosquitoes entering the cave were still caught and they probably corresponded to individuals leaving a former overwintering site in search of a more suitable one. A lower overall frequency of resistant phenotypes was found in the second part of the winter at Ester, suggesting that a large fitness cost (42%) had operated. A decreasing frequency of resistant phenotypes was also found at Ace.1, indicating a large survival cost of resistant mosquitoes (7% for the homozygote Ace.1R) in their former overwintering site. These results are discussed in the light of the local evolution of these resistance genes in southern France.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0018-067X
pubmed:author
pubmed:issnType
Print
pubmed:volume
87
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
441-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Dissecting the cost of insecticide resistance genes during the overwintering period of the mosquito Culex pipiens.
pubmed:affiliation
Genetics of Adaptation, Laboratoire Génétique et Environment, Institut der Sciences de I'Evolution (UMR CNRS 5554), Université de Montpellier II (c. c. 065) F-34095 Montpellier cedex 05, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't