Behavioral evidence for host races in Rhagoletis pomonella flies

Show simple item record Cooley, Sylvia S. en_US Prokopy, Ronald J. en_US Diehl, Scott R. en_US 2006-09-11T19:22:34Z 2006-09-11T19:22:34Z 1988-06 en_US
dc.identifier.citation Prokopy, Ronald J.; Diehl, Scott R.; Cooley, Sylvia S.; (1988). "Behavioral evidence for host races in Rhagoletis pomonella flies." Oecologia 76(1): 138-147. <> en_US
dc.identifier.issn 1432-1939 en_US
dc.identifier.issn 0029-8549 en_US
dc.description.abstract One of the most controversial putative cases of host race formation in insects is that of the apple maggot fly, Rhagoletis pomonella (Diptera: Tephritidae). A principal cause of the controversy is lack of relevant data. In laboratory and field enclosure experiments, we compared the host acceptance behavior of sympatric populations of flies originating from naturally infested hawthorn (the native host) and apple (an introduced host) in Amherst, Massachusetts or East Lansing, Michigan. In general, hawthorn fruit were accepted for ovipositional attempts nearly equally by apple and hawthorn origin females, whereas apples were accepted much more often by apple than hawthorn origin females. Similarly, males of apple and hawthorn origin exhibited about equal duration of residence on hawthorn fruits as sites at which to acquire potential mates, while males of apple origin tended to reside substantially longer than males of hawthorn origin on apples. Irrespective of fly origin, both sexes always responded more positively to hawthorn fruit than to apples. Because all flies assayed were naive (ruling out effects of prior host experience of adults) and because tests revealed no influence of pre-imaginal fruit exposure on pattern of host fruit acceptance by females, the combined evidence suggests the phenotypic differences we observed in host response pattern between hawthorn and apple origin flies may have an underlying genetic basis. Further tests showed that while larval progeny of flies of each origin survived better in naturally growing hawthorn fruit than in naturally growing apples, there was no differential effect of fly origin on larval survival ability in either host. We discuss our findings in relation to restriction in gene flow between sympatric populations of R. pomonella and in relation to current models of host shifts in insects. en_US
dc.format.extent 1256189 bytes
dc.format.extent 3115 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.language.iso en_US
dc.publisher Springer-Verlag en_US
dc.subject.other Larval Survival en_US
dc.subject.other Rhagoletis en_US
dc.subject.other Life Sciences en_US
dc.subject.other Plant Sciences en_US
dc.subject.other Oviposition Behavior en_US
dc.subject.other Ecology en_US
dc.subject.other Host Races en_US
dc.title Behavioral evidence for host races in Rhagoletis pomonella flies en_US
dc.type Original Papers en_US
dc.subject.hlbsecondlevel Natural Resources and Environment en_US
dc.subject.hlbsecondlevel Molecular, Cellular and Developmental Biology en_US
dc.subject.hlbsecondlevel Ecology and Evolutionary Biology en_US
dc.subject.hlbtoplevel Health Sciences en_US
dc.subject.hlbtoplevel Science en_US
dc.description.peerreviewed Peer Reviewed en_US
dc.contributor.affiliationum Department of Human Genetics, University of Michigan Medical School, 48109, Ann Arbor, MI, USA en_US
dc.contributor.affiliationother Department of Entomology, University of Massachusetts, 01003, Amherst, MA, USA en_US
dc.contributor.affiliationother Department of Entomology, University of Massachusetts, 01003, Amherst, MA, USA en_US
dc.contributor.affiliationumcampus Ann Arbor en_US
dc.description.bitstreamurl en_US
dc.identifier.doi en_US
dc.identifier.source Oecologia en_US
dc.owningcollname Interdisciplinary and Peer-Reviewed
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