[Seasonal variation of three Culex species (Diptera: Culicidae) and its parasites and pathogens in Punta Lara, Buenos Aires, Argentina]. / Variación estacional de tres especies de Culex (Diptera: Culicidae) y sus parásitos y patógenos en Punta Lara, provincia de Buenos Aires, Argentina.

ABSTRACT

The seasonality of immatures, imagoes and pathogens of Culex dolosus Lynch Arribálzaga, Culex intrincatus Brethes and Culex maxi Dyar from Punta Lara (Buenos Aires province, Argentina) was monitored weekly (larvae and pupae) or fortnightly (adults), from 1989 to 1991. Culex dolosus was present during all months. The larvae were parasitized by Geotrichum candidum Link ex Person, Smittium morbosum var. rioplatensis López Lastra, Coelomomyces sp., Achlya sp, Amblyospora dolosi García & Becnel and Strelkovimermis spiculatus Poinar & Camino. Conidia of Hyphomycetes, filarial worms of Onchocercidae and S. spiculatus were detected in adults. Cx. intrincatus was present from January to May; the immatures were parasitized by G. candidum, S. morbosum, Achlya sp. and Amblyospora sp. Larvae of Cx. maxi were collected from January to April, and adults in all months except for June and July. S. morbosum was the only parasite found in this mosquito.