Visual Cues Are Relevant in Behavioral Control Measures for Cosmopolites sordidus (Coleoptera: Curculionidae)

Gadi V.P. Reddy, Anantanarayanan Raman

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11 Citations (Scopus)


Trap designs for banana root borer, Cosmopolites sordidus (Germar) (Coleoptera:Curculionidae), have been done essentially on the understanding that C. sordidus rely primarily onchemical cues. Our present results indicate that these borers also rely on visual cues. Previous studieshave demonstrated that among the eight differently colored traps tested in the Þeld, brown traps werethe most effective compared with the performances of yellow, red, gray, blue, black, white, and greentraps; mahogany-brown was more effective than other shades of brown. In the current study, efÞciencyof ground traps with different colors was evaluated in the laboratory for the capture of C. sordidius.Response of C. sordidus to pheromone-baited ground traps of several different colors (used eitherindividually or as 1:1 mixtures of two different colors) were compared with the standardized mahogany-brown traps. Traps with mahogany-brown mixed with different colors had no signiÞcanteffect. In contrast, a laboratory color-choice tests indicatedC. sordidus preferred black traps over othercolor traps, with no speciÞc preferences for different shades of black. Here again, traps with blackmixed with other colors (1:1) had no inßuence on the catches. Therefore, any other color that mixeswith mahogany-brown or black does not cause color-speciÞc dilution of attractiveness. By exploitingthese results, it may be possible to produce efÞcacious trapping systems that could be used in abehavioral approach to banana root borer control.
Original languageEnglish
Pages (from-to)436-442
Number of pages7
JournalJournal of Economic Entomology
Issue number2
Publication statusPublished - 2011


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