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vol.48 número1Impacto dos nutrientes N e K e de açúcares solúveis sobre populações de Diabrotica speciosa (Germar) (Coleoptera, Chrysomelidae) e Agrotis ipsilon (Hüfnagel) (Lepidoptera, Noctuidae) na cultura da batata, Solanum tuberosum L. (Solanaceae)Biologia e parasitismo de Trichogramma atopovirilia Oatman & Platner e Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) em ovos de Spodoptera frugiperda (J.E. Smith) (Lepidoptera, Noctuidae) índice de autoresíndice de assuntospesquisa de artigos
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Revista Brasileira de Entomologia

versão On-line ISSN 1806-9665

Resumo

BECKEL, Helenara; LORINI, Irineu  e  LAZZARI, Sonia M. N.. Adult insect behaviour of different Rhyzopertha dominica (Fabricius) (Coleoptera, Bostrichidae) strains on treated surface of deltamethrin. Rev. Bras. entomol. [online]. 2004, vol.48, n.1, pp.115-118. ISSN 1806-9665.  https://doi.org/10.1590/S0085-56262004000100019.

The most important pest of stored wheat in Brazil, Rhyzopertha dominica (Fabricius, 1792), was tested at Embrapa Trigo, in Passo Fundo-RS, on filter paper impregnated with LC5, LC25, and LC50 of deltamethrin to verify alterations in its walking behaviour that may contribute for pest resistance management in grain storage. Insects of four strains were used, two resistant, BR6 and BR12, and two susceptible, BR4 and UK1, which were collected in storage facilities in Rio Grande do Sul and reared in the laboratory. Insects of the UK1 strain were brought from the laboratory of the Imperial College of Science and Technology, United Kingdom. The results showed differences in the walking behaviour between individuals of strains during the 24 h of the assessment period. Insects of the resistant strains reduced their walking activities on contaminated surface, in an attempt to avoid the insecticide .

Palavras-chave : Behaviour; insecticide resistance; lesser grain borer; pyrethroid.

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