Epizootiological studies of Amblyospora camposi (Microsporidia: Amblyosporidae) in Culex renatoi (Diptera: Culicidae) and Paracyclops fimbriatus fimbriatus (Copepoda: Cyclopidae) in a bromeliad habitat

The epizootiology of Amblyospora camposi was studied in a natural population of Culex renatoi, a bromeliad-inhabiting mosquito, and its intermediate host, Paracyclops fimbriatus fimbriatus, over a 2-year period. Twenty Eryngium cabrerae plants were sampled monthly from January 2003 to January 2005 a...

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Bibliographic Details
Published in:Journal of invertebrate pathology 2007, Vol.94 (1), p.31-37
Main Authors: Micieli, M.V., Marti, G.A., García, J.J., Tranchida, M.C., Becnel, J.J.
Format: Article
Language:English
Subjects:
Amblyospora
Amblyospora - physiology
Amblyospora camposi
Amblyosporidae
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
bromeliad-inhabiting mosquitoes
Copepoda
Copepoda - microbiology
Culex
Culex - microbiology
Culex renatoi
Culicidae
Cyclopidae
Diptera
disease prevalence
disease transmission
Disease Transmission, Infectious
epidemiological studies
Epizootiology
Eryngium
Eryngium - microbiology
Eryngium - physiology
Eryngium cabrerae
Female
Fundamental and applied biological sciences. Psychology
horizontal transmission
host plants
infection
Insecta
intermediate hosts
Invertebrates
Larva - microbiology
Male
meiospores
microhabitats
Microsporidia
microsporidiosis
Paracyclops fimbriatus fimbriatus
Pathology
phytotelmata
Protozoa. Invertebrata
spores
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Summary:The epizootiology of Amblyospora camposi was studied in a natural population of Culex renatoi, a bromeliad-inhabiting mosquito, and its intermediate host, Paracyclops fimbriatus fimbriatus, over a 2-year period. Twenty Eryngium cabrerae plants were sampled monthly from January 2003 to January 2005 and the prevalence of A. camposi in P.f. fimbriatus and Cx. renatoi populations was determined. The monthly prevalence rates of meiospore infections in Cx. renatoi larvae never exceeded 5.5% and was detected in 50% of the monthly samples. Meiospores were available in plants over the course of the study at a mean concentration of 2 × 10 4 meiospores/ml. Within each plant the parasite was maintained by horizontal transmission. P.f. fimbriatus with vegetative stages and mature spores were found regularly in bromeliads suggesting efficient meiospore infectivity to field copepod populations. The mean concentration of spores from copepods found in plants was 8 × 10 2 spores/ml. Infections in copepods were detected in 54% of the monthly samples with a prevalence rate ranging from 0.55 to 17.4% and an overall average of 5.1%. Vegetative stages in fourth instar mosquito larvae (probably derived from the horizontal pathway via spores formed in copepods) were detected in 12.5% of the monthly samples with an overall prevalence rate of 1.1%. Infections in female and male adults were detected in 20.8% of the monthly samples with an overall average of 4.1% and 6.8%, respectively.
ISSN:0022-2011
1096-0805
DOI:10.1016/j.jip.2006.08.004