Document Detail


Development of Amblyospora campbelli (Microsporida: Amblyosporidae) in the mosquito Culiseta incidens (Thomson).
MedLine Citation:
PMID:  1969479     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The complete life cycle of Amblyospora campbelli (Kellen and Wills, 1962) (Microsporida: Amblyosporidae) requires a two-host system involving the mosquito host, Culiseta incidens (Thomson), and an obligatory intermediate copepod host. The parasite has dimorphic spore development producing meiospores (haploid condition) and binucleated spores (diploid condition), either as an exclusive infection or simultaneously (within females only). This is the 1st known report of concurrent spore development within an adult mosquito host, and, therefore, shows the Amblyospora campbelli system to be uniquely different from other Amblyospora spp. cycles previously described. The significance of dimorphic spore development is discussed. In females, diplokaryotic meronts may invade oenocytes, causing a benign-type of infection. A blood-meal is required to initiate sporulation of the binucleate spore. The binucleate spore contains the sporoplasm involved in transovarial transmission. A 2nd sporulation sequence, primarily in adipose tissue, may involve both males and females. In this sequence, repeated merogonic division greatly increased the density of diplokaryotic meronts and generally involved most of the body of the host. Production of meiospores, unlike that for the binucleate spore, appeared to be spontaneous (i.e. no obligatory blood meal). Survivorship of male and female larval mosquitoes was nearly equal. Adult females spread the parasite in three ways: transovarial, transovum, and by meiospore deposition.
Authors:
D L Dickson; A R Barr
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of protozoology     Volume:  37     ISSN:  0022-3921     ISO Abbreviation:  J. Protozool.     Publication Date:    1990 Mar-Apr
Date Detail:
Created Date:  1990-05-02     Completed Date:  1990-05-02     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  2985197R     Medline TA:  J Protozool     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  71-8     Citation Subset:  IM    
Affiliation:
School of Public Health, Department of Epidemiology, University of California, Los Angeles 90024-1772.
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MeSH Terms
Descriptor/Qualifier:
Animals
Cell Nucleus
Culicidae / parasitology*
Eukaryota / classification,  growth & development*
Female
Larva / parasitology
Male
Meiosis
Ovum / parasitology
Spores / growth & development,  ultrastructure

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


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