Host range expansion and increasing damage potential of Euwallacea nr. fornicatus (Coleoptera: Curculionidae) in Florida

作者: David Owens , Luisa F. Cruz , Wayne S. Montgomery , Teresa I. Narvaez , Elena Q. Schnell

DOI: 10.1653/024.101.0212

关键词:

摘要: Ambrosia beetles in the Euwallacea nr. fornicatus complex (Coleoptera: Curculionidae) vector Fusarium spp. fungi pathogenic to susceptible hosts, including avocado, Persea americana Mill., (Lauraceae). Previous survey traps Florida avocado groves indicated significant beetle populations several with minimal observed activity, suggesting an external source. A natural area near one such grove revealed E. Fornicates colonization of wild tamarind, Lysiloma latisiliquum (L.) Bentham (Fabaceae). was conducted understand role that areas might play E . ecology southern Florida. Headspace volatiles from rasped and L. bark were analyzed by gas chromatography-mass spectroscopy (GC-MS) identify potential attractants. Genetic analysis confirmed these their symbiotic are same attacks avocado. Gas is high α-copaene (a known attractant ), but this kairomone lacking Host diam ht examined for influence on behavior. Albizia lebbeck (Fabaceae) unknown shrub also be suitable hosts. Concurrent study, a nearby soursop, Annona muricata (Annonaceae), found have infestations increasing other cultivated native trees potentially at risk. Further research warranted better emerging pest chemical cues used host location. Resumen Los escarabajos ambrosiales en el complejo cr. transmiten hongos patogenos de hospederos susceptibles, incluyendo aguacate, Trampas usadas anteriormente para monitorear los huertos aguacate la indicaron poblaciones significativas varios con una actividad minima observada sobre arboles lo que sugiere fuente externa escarabajos. Un cerca uno estos revelo colonizacion tamarindo silvestre, Se realizo un sondeo del comprender papel las naturales podrian jugar ecologia sur analizaron “headspace” raspado y corteza por medio cromatografia gases espectrometria masas (CG-SM) identificar atrayentes potenciales. El analisis genetico confirmo sus simbioticos son mismo ataca al indico tiene alto contenido α-copaeno (un atrayente conocido pero hace falta esta kairomona examinaron diametro altura hospedero determinar su posible influencia comportamiento colonizacion. Tambien, se observaron arbusto desconocido como adecuados. Simultaneamente este estudio, encontro huerto guanabana ( L.: Annonaceae) cercano, tenia infestaciones Las estan incrementando otros cultivados nativos potencialmente riesgo. necesita mas investigacion mejor plaga emergente senales quimicas utiliza localizar hospederos. View article BioOne

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