Oviposition activity and seasonal pattern of a population of Aedes (Stegomyia) aegypti (L. ) (Diptera: Culicidae) in subtropical Argentina
Mem. Inst. Oswaldo Cruz
; 98(5): 659-663, July 2003. tab, graf
Article
in English
| LILACS
| ID: lil-344286
Responsible library:
BR1.1
ABSTRACT
Monthly oviposition activity and the seasonal density pattern of Aedes aegypti were studied using larvitraps and ovitraps during a research carried out by the Public Health Ministry of Salta Province, in Tartagal, Aguaray and Salvador Mazza cities, in subtropical Argentina. The A. aegypti population was active in both dry and wet seasons with a peak in March, accordant with the heaviest rainfall. From May to November, the immature population level remained low, but increased in December. Ae. aegypti oviposition activity increased during the fall and summer, when the relative humidity was 60 percent or higher. Eggs were found in large numbers of ovitraps during all seasons but few eggs were observed in each one during winter. The occurrence and the number of eggs laid were variable when both seasons and cities were compared. The reduction of the population during the winter months was related to the low in the relative humidity of the atmosphere. Significant differences were detected between oviposition occurrences in Tartagal and Aguaray and Salvador Mazza cities, but no differences in the number of eggs were observed. Two factors characterize the seasonal distribution pattern of Ae. aegypti in subtropical Argentina, the absence of a break during winter and an oviposition activity concomitant of the high relative humidity of the atmosphere
Full text:
Available
Collection:
International databases
Health context:
Neglected Diseases
Health problem:
Dengue
Database:
LILACS
Main subject:
Oviposition
/
Seasons
/
Behavior, Animal
/
Aedes
Limits:
Animals
Country/Region as subject:
South America
/
Argentina
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2003
Document type:
Article
Affiliation country:
Argentina
Institution/Affiliation country:
Instituto de Limnología Dr. Raúl A. Ringuelet/AR
/
Universidad Nacional de La Plata/AR