Agradecimientos

Abstract

. Importance of culicid larvae in the diet of Ischnura fluviatilis Selys (Odonata: Zygoptera) in natural habitats near L a Plata, Buenos Aires province. In order to determine the relevance of larvae of Culicidae in the food of Ischnura f lu v ia t ilis, immature stages of this specie were collected from two ditches for analysis of the pellets contents. The surrounding fauna was collected to assess any other preys as well. The analysis revealed the presence of Culi cidae, Chironomidae microcrustaceans, and Nematode Rabditidae. Chironomidae (30.67%) were the ones best represented in La Granja, together with Copepoda (23.48%), while in Ringuelet there were Culicidae (18.98%) and Chironomidae (11.68'%). Significant dependence between the presence of naiads of Odonata, larval mosquito habitats, and food condition was seen, while independence between prey-diversity and larval mosquito habitat (P > 0.01) was found.