Limits to the host range of the highly polyphagous tephritid fruit fly Anastrepha ludens in its natural habitat

Bulletin of Entomological Research
Andrea BirkeMartín Aluja

Abstract

Anastepha ludens (Diptera: Tephritidae) is a highly polyphagous fruit fly that is able to develop in a wide range of hosts. Understanding the limits of this pest's host range could provide valuable information for pest management and plant breeding for pest resistance. Previous studies have shown that guavas (Psidium guajava (Myrtaceae) L.), are not attacked under natural conditions by A. ludens. To understand this phenomenon, guavas were exposed to natural infestation by A. ludens and to other fruit fly species that infest guavas in nature (Anastrepha striata Schiner, Anastepha fraterculus (Wiedemann), Anastepha obliqua (Macquart)). Once the susceptible phenological stage of guavas was determined, fruit infestation levels were compared between A. ludens and A. striata. Choice and non-choice tests were performed under field-cage conditions. Under field conditions, guavas were susceptible to A. striata and A. fraterculus attack all the way from when fruit was undeveloped to when fruit began to ripen. No infestation by A. ludens was recorded under natural conditions. Similar results were obtained when forced exposures were performed, indicating that unripe guavas were preferred by A. striata over ripe fruit, and that infestation ...Continue Reading

References

Dec 1, 2001·Annual Review of Entomology·Caroline S Awmack, Simon R Leather
Mar 21, 2008·Journal of Ethnopharmacology·Rosa Martha Pérez GutiérrezRosario Vargas Solis
Feb 4, 2011·Journal of Experimental Botany·Cesar Rodriguez-SaonaChristopher J Frost

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