Feeding behaviour of <i>Bactrocera cacuminata</i> (Hering) (Diptera: Tephritidae) on methyl eugenol: a laboratory assay

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<jats:p><jats:bold>Abstract</jats:bold> Many dacine (Diptera: Tephritidae) species are attracted to one of two chemical substances, 4‐allyl‐1,2‐dimethoxybenzene (methyl eugenol (ME)) or 4‐(<jats:italic>p</jats:italic>‐hydroxyphenyl)‐2‐butanone (cue lure). Despite the fact that these chemicals or analogs occur naturally, their significance in the biology/ecology of the Dacinae has seldom been examined. In this study, we examine the patterns in feeding behaviour of <jats:italic>Bactrocera cacuminata</jats:italic> (Hering), a monophagous non‐pest fruit fly, on ME. Based on a laboratory assay, we found that males of this species fed on ME multiple times within a single day and on multiple days. The pattern of repeat feeding was not related to time since previous feeding or duration of prior feeding. Our results contrast those obtained on a similar study on a related polyphagous species (<jats:italic>Bactrocera dorsalis</jats:italic> (Hendel)). We discuss the implications of our findings with a view to explaining the functional significance of dacine response to these plant‐derived chemicals.</jats:p>

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