Culicidae (Diptera) selection of humans,chickens and
rabbits in three different environments in the province of Chaco,
Argentina |
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| Authors: | Marina Stein Laura Zalazar Juana Alicia Willener Francisco Ludue?a Almeida Walter Ricardo Almirón |
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| Affiliation: | 1. Instituto de Medicina Regional ;2. Facultad de Ingeniería, Universidad Nacional del Nordeste, Chaco, Argentina ;3. Centro de Investigaciones Entomológicas, Universidad Nacional de Córdoba, Córdoba, Argentina |
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| Abstract: | Studies were conducted to determine the selection of humans, chickensand rabbits by Culicidae in three different environments in the province ofChaco, Argentina. Mosquitoes were collected fortnightly using cylindrical metaltraps containing animal bait (chickens and rabbits). The mosquitoes werecollected between June 2001-May 2002. During the same period and with the samefrequency, mosquitoes biting the human operators of the traps were collectedduring the first 15 min of exposure within different time intervals: from 09:00am-11:00 am, 01:00 pm-03:00 pm, 05:00 pm-07:00 pm and 09:00 pm-10:00 pm. A totalof 19,430 mosquitoes of 49 species belonging to 10 genera were collected.Culex species mainly selected chicken bait andWyeomyia species selected rabbit bait.Ochlerotatus and Psorophora species weremore abundant in rabbit-baited traps. Anopheles triannulatus,Coquillettidia nigricans, Ochlerotatusscapularis, Mansonia titillans andPsorophora albigenu showed a strong attraction for humanbait. The Anopheles, Coquillettidia,Culex and Mansonia species were moreactive between 05:00 pm-09:00 pm, while Ochlerotatus,Psorophora, Haemagogus andWyeomyia were most active from 09:00 am-07:00 pm. Thisstudy provides additional information about the biology and ecology of arbovirusvectors in Chaco. |
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| Keywords: | host selection Culicidae Chaco Argentina |
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