Document Detail


The influence of larval density, food stress, and parasitism on the bionomics of the dengue vector Aedes aegypti (Diptera: Culicidae): implications for integrated vector management.
MedLine Citation:
PMID:  22548557     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
New larval control strategies for integrated vector management of Aedes aegypti are in high demand, including the use of biological control agents. Exposure of Aedes aegypti to parasites, starvation, and overcrowded conditions during larval development reduces the probability of survival to eclosion, can directly affect fitness parameters such as adult size and fecundity, and can affect the size, provisioning, and viability of eggs produced by females. We compared these parameters after exposing larvae to 1) abundant food at low larval densities, 2) food deprivation and high larval density, and 2) infection with the endoparasite Plagiorchis elegans, an entomopathogenic digenean trematode. Female mosquitoes that eclosed from larval conditions of starvation and overcrowding were smaller and laid fewer and smaller eggs than controls. The proportion of females to complete an oviposition cycle was reduced in the P. elegans-infected treatment group. Parasite load was negatively correlated with wing length and egg size. Infection of Ae. aegypti with P. elegans has sublethal effects and may reduce population-level reproductive output, but one-time low-density P. elegans exposure does not have sufficient effect on Ae. aegypti fitness parameters to be considered a viable biocontrol option.
Authors:
K Mitchell-Foster; B O Ma; S Warsame-Ali; C Logan; M E Rau; C Lowenberger
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Journal of vector ecology : journal of the Society for Vector Ecology     Volume:  37     ISSN:  1081-1710     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-5-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9512496     Medline TA:  J Vector Ecol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  221-229     Citation Subset:  -    
Copyright Information:
© 2012 The Society for Vector Ecology.
Affiliation:
Department of Biological Sciences, Simon Fraser University, 8888 University Dr., Burnaby, BC, Canada, V5A1S6, foster5@interchange.ubc.ca Interdisciplinary Studies Graduate Program and Global Health Research Program, University of British Columbia, 6201 Cecil Green Park Road, Vancouver, BC, Canada, V6T 1Z1 ESSA Technologies Ltd., 600 - 2695 Granville St., Vancouver, BC, Canada V6H 3H4 Institute of Parasitology, McGill University, McDonald Campus, 21-111 Lakeshore Rd., Ste Anne de Bellevue, QC, Canada, H9X 3V9.
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