Zingerone feeding affects mate choice but not fecundity or fertility in the melon fly, Zeugodacus cucurbitae (Diptera: Tephritidae)
Keywords:
sexual selection, fitness, male lure, Bactrocera cucurbitaeAbstract
Consuming natural male lure compounds enables the males of some fruit flies (Diptera: Tephritidae) to mate more successfully within their femalechoice mating systems. However, it remains unclear what benefits females derive from mating with lure-fed males. With Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), feeding on the lures cue-lure and zingerone is associated with increased fecundity of mated females, but this direct fitness benefit was not apparent with B. dorsalis (Hendel) (with the lure methyl eugenol) or Zeugodacus cucurbitae (Coquillett) (with the lure cue-lure). Expanding on previous observations, we fed Z. cucurbitae males zingerone, but we observed no evidence of direct fitness benefits to males feeding on zingerone (i.e., mating success and virgin longevity), or to females mated to zingerone-fed males (i.e., longevity, fecundity, and egg viability). We therefore find no reason to reject the runaway selection hypothesis that previously has been proposed to explain lure attraction in B. dorsalis and Z. cucurbitae.
Resumen
El consumo de compuestos naturales para señuelos de machos permite que los machos de algunas moscas de la fruta (Diptera: Tephritidae) puedan aparearse y escoger con más éxito dentro de su sistema de apareamiento con las hembras. Sin embargo, todavia no esta claro qué beneficios obtienen las hembras de aparearse con machos alimentados con señuelos. Con Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), la alimentación con los señuelos, el “cue-lure” y la zingerona se asocia con un aumento de la fecundidad de las hembras apareadas, pero este beneficio directo a su desempeño no fue evidente con B. dorsalis (Hendel) (con el señuelo de eugenol metilo) ni en Zeugodacus cucurbitae (Coquillett) (con el señuelo “cue-lure”). Ampliando sobre observaciones hechas anteriormente, alimentamos a los machos de Z. cucurbitae con zingerona, pero no observamos evidencia de beneficios directos sobre el desempeño de los machos que se alimentaron de zingerona (en cuanto de su éxito de apareamiento y longevidad de las hembras virgenes), ni tampoco en las hembras apareadas con machos alimentados con zingerona (en cuanto de su longevidad, fecundidad y viabilidad de los huevos). Por lo tanto, no encontramos ninguna razón para rechazar la hipótesis que la selección de su pareja esta fuera de control que se propuso anteriormente para explicar la atracción de señuelos en B. dorsalis y Z. cucurbitae.
View this article in BioOne
Downloads
Additional Files
Published
Issue
Section
License
Copyright for any article published in Florida Entomologist is held by the author(s) of the article. Florida Entomologist is an open access journal. Florida Entomologist follows terms of the Creative Commons, Attribution Non-Commercial License (cc by-nc). By submitting and publishing articles in Florida Entomologist, authors grant the FOJ and Florida Entomologist's host institutions permission to make the article available through Internet posting and electronic dissemination, and to otherwise archive the information contained both electronically and in a hard printed version. When used, information and images obtained from articles must be referenced and cited appropriately. Articles may be reproduced for personal, educational, or archival purposes, or any non-commercial use. Permission should be sought from the author(s) for multiple, non-commercial reproduction. Written permission from the author(s) is required for any commercial reproduction.