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- Title
Genetic structure of cherry fruit fly ( Rhagoletis cingulata) populations across managed, unmanaged, and natural habitats.
- Authors
Smith, James J.; Powell, Thomas H.Q.; Teixeira, Luis; Armstrong, William O.; McClowry, Robert J.; Isaacs, Rufus; Hood, Glen R.; Feder, Jeffrey L.; Gut, Larry
- Abstract
The cherry fruit fly ( CFF), Rhagoletis cingulata Loew ( Diptera: Tephritidae: Trypetini), is endemic to eastern North America and Mexico, where its primary native host is black cherry [ Prunus serotina Ehrh. ( Rosaceae)]. Cherry fruit fly is also a major economic pest of the fruit of cultivated sweet ( Prunus avium L.) and tart ( Prunus cerasus L.) cherries. Adult CFF that attack wild black cherry and introduced, domesticated cherries in commercial and abandoned orchards are active at different times of the summer, potentially generating allochronic isolation that could genetically differentiate native from sweet and tart CFF populations. Here, we test for host-related genetic differences among CFF populations in Michigan attacking cherries in managed, unmanaged, and native habitats by scoring flies for 10 microsatellite loci. Little evidence for genetic differentiation was found across the three habitats or between the northern and southern Michigan CFF populations surveyed in the study. Local gene flow between native black cherry, commercial, and abandoned orchards may therefore be sufficient to overcome seasonal differences in adult CFF activity and prevent differentiation for microsatellites not directly associated with (tightly linked to) genes affecting eclosion time. The results do not support the existence of host-associated races in CFF and imply that flies attacking native, managed, and unmanaged cherries should be considered to represent a single population for pest management purposes.
- Subjects
NORTH America; MEXICO; RHAGOLETIS cerasi; POPULATION genetics; HABITATS; BLACK cherry; HOST plants; DISEASE resistance of plants
- Publication
Entomologia Experimentalis et Applicata, 2014, Vol 150, Issue 2, p157
- ISSN
0013-8703
- Publication type
Article
- DOI
10.1111/eea.12148