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On-line version ISSN 1668-298X


MAZZUFERI, V. E. et al. Species richness and abundance of aphids (Hemiptera: Aphididae) and their parasitoids in different genotypes and at different growth stages of chickpea. Agriscientia [online]. 2011, vol.28, n.2, pp.99-108. ISSN 1668-298X.

Aphids may damage plants by sucking plant juices or by transmitting diseases. The aim of this study was to obtain further information about aphid species and their parasitoids in different genotypes of chickpea, calculate the incidence of parasitism and report on fluctuating populations (from aphids and parasitoid) in relation to plant phenology. The study was undertaken during 2006 and 2007 in San Marcos Sierras (Cordoba). Seven lines and two cultivars of chickpea were evaluated. Crop plots were planted following a completely randomized design block with 3 replicates. Every two weeks different developmental stages of aphids and "mummies" found in 10 plants randomly selected from each genotype and block were collected manually. Thirteen species of aphids were identified. In 2006 there was greater abundance and species richness than in 2007. The numerically dominant species were Acyrthosiphon pisum and A. kondoi. Only 5 species colonized the crop. Chañaritos presented the greatest abundance of insects in both years and M60 and M75 genotypes showed the greatest species richness. In both years, aphids were present during the reproductive stage. There were three species of parasitoids and parasitism was estimated at about 35%.

Keywords : Cicer arietinum; Genotypes; Acyrthosiphon pisum; Acyrthosiphon kondoi parasitoids.

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