Document Detail

Dispersal and survival of Nyssomyia intermedia and Nyssomyia neivai (Diptera: Psychodidae: Phlebotominae) in a cutaneous leishmaniasis endemic area of the speleological province of the Ribeira Valley, state of S?o Paulo, Brazil.
MedLine Citation:
PMID:  20140376     Owner:  NLM     Status:  MEDLINE    
The dispersal and survival of the phlebotomines Nyssomyia intermedia and Nyssomyia neivai (both implicated as vectors of the cutaneous leishmaniasis agent) in an endemic area was investigated using a capture-mark-release technique in five experiments from August-December 2003 in municipality of Iporanga, state of S?o Paulo, Brazil. A total of 1,749 males and 1,262 females of Ny. intermedia and 915 males and 411 females of Ny. neivai were marked and released during the five experiments. Recapture attempts were made using automatic light traps, aspiration in natural resting places and domestic animal shelters and Shannon traps. A total of 153 specimens (3.48%) were recaptured: 2.59% (78/3,011) for Ny. intermedia and 5.35% (71/1,326) for Ny. neivai. Both species were recaptured up to 144 h post-release, with the larger part of them recaptured within 48 h. The median dispersion distances for Ny. intermedia and Ny. neivai, respectively, were 109 m and 100 m. The greatest dispersal range of Ny. intermedia was 180 m, while for Ny. neivai one female was recaptured in a pasture at 250 m and another in a pigsty at 520 m, showing a tendency to disperse to more open areas. The daily survival rates calculated based on regressions of the numbers of marked insects recaptured on the six successive days after release were 0.746 for males and 0.575 for females of Ny. intermedia and 0.649 for both sexes of Ny. neivai. The size of the populations in the five months ranged from 8,332-725,085 for Ny. intermedia males, 2,193-104,490 for Ny. intermedia females, 1,687-350,122 for Ny. neivai males and 254-49,705 for Ny. neivai females.
Eunice A B Galati; Mauro Breviglieri Fonseca; Ana Maria Marass?; Edna F?tima M Bueno
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Mem?rias do Instituto Oswaldo Cruz     Volume:  104     ISSN:  1678-8060     ISO Abbreviation:  Mem. Inst. Oswaldo Cruz     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2010-02-08     Completed Date:  2010-04-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7502619     Medline TA:  Mem Inst Oswaldo Cruz     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  1148-58     Citation Subset:  IM    
Departamento de Epidemiologia, Faculdade de Sa?de P?blica, Universidade de S?o Paulo, S?o Paulo, Brasil.
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MeSH Terms
Endemic Diseases
Insect Vectors / classification,  physiology*
Leishmaniasis, Cutaneous / transmission
Population Density
Population Dynamics
Psychodidae / classification,  physiology*

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