Document Detail

Regulatory role of parasites: impact on host population shifts with resource availability.
MedLine Citation:
PMID:  1906637     Owner:  NLM     Status:  MEDLINE    
Effects of infections by the ciliate Lambornella clarki on larval populations of its mosquito host Aedes sierrensis were examined in laboratory and field studies. When host populations developed with sufficient food, mortality from parasites was additive and reduced the number of emerging mosquitoes. For food-limited populations, mortality was compensatory or depensatory; emerging adults were as or more abundant with higher average fitness than those from uninfected control populations. When nutrients were scarce, parasitic infections relaxed larval competition and increased per capita food by reducing host abundance. Food limitation altered larval feeding behavior, reducing horizontal transmission and subsequent mortality from parasitism.
J O Washburn; D R Mercer; J R Anderson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  253     ISSN:  0036-8075     ISO Abbreviation:  Science     Publication Date:  1991 Jul 
Date Detail:
Created Date:  1991-08-19     Completed Date:  1991-08-19     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  185-8     Citation Subset:  IM    
Department of Entomology, University of California, Berkeley 94720.
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MeSH Terms
Aedes / parasitology*,  physiology
Ciliophora / physiology*
Population Dynamics
Grant Support

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

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