Abstract

MUNIZ-MERINO, Manolo; CIBRIAN-TOVAR, J.  and  NIETO-ANGEL, Raúl. Sources of odor attractive to Conotrachelus crataegi Walsh (Coleoptera: Curculionidae) and its preference to oviposit on Crataegus spp. (Rosaceae: Maloideae). Rev. Chapingo Ser.Hortic [online]. 2012, vol.18, n.1, pp.21-37. ISSN 2007-4034.

The hawthorn, Crataegus spp., is grown in seven states in Mexico. Its fruit is affected by Conotrachelus crataegi, an insect that bores into its flesh and stones, causing damage and loss of quality. In this research, we evaluated different parts of the host, male and female quince curculios, and combinations thereof, as potential sources of attraction for adults. We also studied female oviposition preference in eight fruit accessions from five hawthorn species. Results of bioassays in two-way olfactometers indicated that the fruits were the best adult attractant source (P<0.0001), so we believe that attractive volatiles released from them should be tested as source material to identify potential attractant compounds for C. crataegi. Oviposition preference was directly related to fruit size, but inversely related to fruit maturity status. Medium and large-sized immature fruits, mainly belonging to the species Crataegus mexicana, were the most oviposited.

Keywords : Attractants; egg depositions; quince curculio; hawthorn.

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