Document Detail


Tick ecology: processes and patterns behind the epidemiological risk posed by ixodid ticks as vectors.
MedLine Citation:
PMID:  15938504     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The population ecology of ticks is fundamental to the spatial and temporal variation in the risk of infection by tick-borne pathogens. Tick population dynamics can only be fully understood by quantifying the rates of the demographic processes, which are influenced by both abiotic (climatic) factors acting on the free-living tick stages and biotic (host) responses to the tick as a parasite. Within the framework of a population model, I review methods and results of attempts to quantify (1) rates of tick development and the probability of diapause, (2) the probability of questing for hosts by unfed ticks, (3) the probability of ticks attaching to a host, and (4) tick mortality rates. Biologically, these processes involve the physiological and behavioural response of ticks to temperature, moisture stress and day length that result in specific patterns of seasonal population dynamics and host relationships. Temperate and tropical patterns will be illustrated with reference mostly to Ixodes ricinus and Rhipicephalus appendiculatus, respectively.
Authors:
S E Randolph
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Parasitology     Volume:  129 Suppl     ISSN:  0031-1820     ISO Abbreviation:  Parasitology     Publication Date:  2004  
Date Detail:
Created Date:  2005-06-07     Completed Date:  2006-07-17     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0401121     Medline TA:  Parasitology     Country:  England    
Other Details:
Languages:  eng     Pagination:  S37-65     Citation Subset:  IM    
Affiliation:
Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK. sarah.randolph@zoology.ox.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Animals
Arachnid Vectors / physiology*
Climate
Environment*
Feeding Behavior
Host-Parasite Interactions
Ixodidae / physiology*
Population Dynamics
Risk Factors
Seasons
Temperature
Tick Infestations / epidemiology,  parasitology*
Tick-Borne Diseases / epidemiology*,  parasitology,  transmission
Grant Support
ID/Acronym/Agency:
//Wellcome Trust

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


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