Agronomia

September - October 2007

633

ECOLOGY, BEHAVIOR AND BIONOMICS

Interação entre Fatores Visuais e Olfativo em Localização de Recursos pela Mosca-Varejeira, Chrysomya megacephala (Fabricius) (Diptera:
Calliphoridae), em Condições Naturais
LEONARDO GOMES1, GUILHERME GOMES2, FABIANA E. CASARIN3, IRACEMA M. DA SILVA2,
MARCOS R. SANCHES4, CLAUDIO J. VON ZUBEN2 E HAROLD G. FOWLER5
1
Lab. Eco-Epidemiologia de Doenças de Chagas, Instituto Oswaldo Cruz - IOC/FIOCRUZ, Pavilhão Lauro Travassos, sala A10, térreo, Av. Brasil, 4365, Manguinhas, C. postal 926, 21045-900, Rio de Janeiro, RJ, [e-mail]
2
Depto. Zoologia; 3 Depto. Biologia; 5Depto. Ecologia. Instituto de Biociências, UNESP, Av. 24A, 1515, Bela Vista
13506-900, Rio Claro, SP
4
IME, USP. Rua do Rocio 220, 1o andar, Vila Olímpia, 04552-903, São Paulo, SP

Neotropical Entomology 36(5):633-639 (2007)

Chrysomya megacephala
(Fabricius) (Diptera: Calliphoridae), in Natural Conditions
ABSTRACT - The interaction between olfactory and visual cues in the landing responses of Chrysomya megacephala (Fabricius) was analyzed in a natural environment (grass) using three plain cardboard circles with the colors white, black and other being the own grass (control) with 30 cm in diameter. The circles in the center. To check the interaction between visual and olfactory factors, we analyzed the relation among the direction of wind and the sectors, the quadrants and the color of circle where C. megacephala adults bait when the wind was present compared with the other control circle. The results show that while odor cues may enhance the induction of landing by C. megacephala, visual cues are important when selecting a

KEY WORDS:
RESUMO - A interação entre pistas visuais e olfativa na resposta de pouso de Chrysomya megacephala
(Fabricius) foi analisada em ambiente natural. Para isso, foram utilizados três círculos planos de cartolina de cor branca, preta e outro com a própria grama (controle)