Document Detail


Repeated bouts of dehydration deplete nutrient reserves and reduce egg production in the mosquito Culex pipiens.
MedLine Citation:
PMID:  20675546     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In this study of the mosquito, Culex pipiens, we examined the impact of multiple bouts of dehydration and rehydration on survival, depletion of metabolic reserves and egg production in both non-diapausing and diapausing females. Mosquitoes provided with access to sugar during rehydration survived longer than those allowed to rehydrate without sugar, and their survival was similar to that of mosquitoes of the same age that were not dehydrated. Among mosquitoes not provided with sugar, each dehydration bout reduced the mosquito's dry mass - an effect likely to be due to the utilization of carbohydrates and lipid reserves. The toll on glycogen and lipid reserves is likely to be especially costly for diapausing mosquitoes that are dependent on these stored reserves for winter survival. Egg production in both non-diapausing and post-diapausing C. pipiens was also reduced in response to multiple bouts of dehydration. Although egg quality was not compromised, the number of eggs produced was reduced. Both non-diapausing and diapausing females can compensate for the nutrient loss due to dehydration by sugar feeding but the opportunity to feed on sugar is likely to be rarely available in the overwintering habitat of diapausing females, thus the impact of dehydration may be especially pronounced in overwintering populations of C. pipiens.
Authors:
Joshua B Benoit; Kevin R Patrick; Karina Desai; Jeffrey J Hardesty; Tyler B Krause; David L Denlinger
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  213     ISSN:  1477-9145     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-02     Completed Date:  2010-11-10     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  2763-9     Citation Subset:  IM    
Affiliation:
Department of Entomology, The Ohio State University, Columbus, OH 43210, USA. joshua.benoit@yale.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Carbohydrate Metabolism
Culex / physiology*
Dehydration
Female
Food*
Life Cycle Stages
Lipid Metabolism
Water / metabolism
Grant Support
ID/Acronym/Agency:
R01 AI058279/AI/NIAID NIH HHS
Chemical
Reg. No./Substance:
7732-18-5/Water
Comments/Corrections

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


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