How to translate text using browser tools
1 June 2007 Parity and age composition for Anopheles darlingi Root (Diptera: Culicidae) and Anopheles albitarsis Lynch-Arribálzaga (Diptera: Culicidae) of the northern Amazon Basin, Brazil
Fábio Saito Monteiro de Barros, Mércia Eliane Arruda, Simão D. Vasconcelos, José Francisco Luitgards-Moura, Ulisses Confalonieri, Maria Goreti Rosa-Freitas, Pantelis Tsouris, Tamara Nunes Lima-Camara, Nildimar Alves Honório
Author Affiliations +
Abstract

Parity and age composition for Anopheles darlingi and Anopheles albitarsis in the northern Amazon Basin, Brazil, were investigated. Anopheline ovaries and ovarioles were examined in order to determine whether hourly and seasonal parity status for the vectors An. albitarsis and An. darlingi would vary in two different landscapes (forest and savanna/forest) where malaria is endemic in the northern Amazon Basin. A total of 1,199 anophelines (535 An. darlingi and 664 An. albitarsis) was dissected for parity status, ovariole dilatations, and follicular stages. The total number of nulliparous and parous females for both species varied by time of collection, locality, and season. During the rainy season for the first two h of collection, more nulliparous An. albitarsis and An. darlingi females were collected in the first hour (18:00–19:00), but during the second hour (19:00–20:00) more parous females of both species were captured. During the dry season in Copaíbas, more parous females of An. albitarsis were observed in the first hour while more nulliparous females were observed in the second hour. Nulliparous and parous females of both species for both hours were not significantly different at Road 19 in the dry season. This location was characterized by a forest malaria pattern of transmission with higher numbers of parous females and population stability in the dry season. In Copaíbas, the density and parity of An. darlingi increased during the rainy season, and it could be classified as an alluvial malaria pattern of transmission. For Copaíbas, control measures would be more successful if adopted at the transition from dry to rainy season. Further investigation on longitudinal spatiotemporal change in longevity and survival rates would help us to clarify differences in vector competence for An. darlingi and An. albitarsis and add to the understanding of differences regarding prevailing landscapes in malaria epidemiology in the northern Amazon Basin.

Fábio Saito Monteiro de Barros, Mércia Eliane Arruda, Simão D. Vasconcelos, José Francisco Luitgards-Moura, Ulisses Confalonieri, Maria Goreti Rosa-Freitas, Pantelis Tsouris, Tamara Nunes Lima-Camara, and Nildimar Alves Honório "Parity and age composition for Anopheles darlingi Root (Diptera: Culicidae) and Anopheles albitarsis Lynch-Arribálzaga (Diptera: Culicidae) of the northern Amazon Basin, Brazil," Journal of Vector Ecology 32(1), 54-68, (1 June 2007). https://doi.org/10.3376/1081-1710(2007)32[54:PAACFA]2.0.CO;2
Received: 7 August 2006; Accepted: 6 March 2007; Published: 1 June 2007
JOURNAL ARTICLE
15 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

KEYWORDS
age composition
albitarsis
Amazon Basin
Anopheles darlingi
mosquitoes
parity
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top