Possible mechanisms for animal speciation in the absence of geographic isolation remain controversial. Univoltine flies of the Rhagoletis pomonella sibling species group of larval fruit parasites have been cited1–5 as prime examples of sympatric speciation through divergence in host plant association. The recent emergence of several populations of R. pomonella associated with plants other than the fly's native hawthorn host has been attributed to the effects described by a model2–4 of sympatric host-race formation involving host recognition and survival genes; however, direct genetic evidence of biologically meaningful differentiation among putative host races has been lacking. In contrast, the potential importance of seasonal asynchrony (of flies adapted to host plants with different fruiting phenologies) in initial restriction of gene flow has been largely undervalued. Here I report heritable divergence in seasonal emergence of R. pomonella flies collected from sympatric populations on three host plant species in Illinois, in the United States.
Subscribe to Journal
Get full journal access for 1 year
only $3.90 per issue
All prices are NET prices.
VAT will be added later in the checkout.
Tax calculation will be finalised during checkout.
Rent or Buy article
Get time limited or full article access on ReadCube.
All prices are NET prices.
Bush, G. L. Bull. Mus. comp. Zool. Harv. 134, 431–562 (1966).
Bush, G. L. Evolution 23, 237–251 (1969).
Bush, G. L. in Genetic Mechanisms of Specialion in Insects (ed. White, M. J. D.) 3–23 (Australian and New Zealand Book, Sydney, 1974).
Bush, G. L. in Evolutionary Strategies of Parasitic Insects and Mites (ed. Price, P. W.) 187–206 (Plenum, London, 1975).
Bush, G. L. & Diehl, S. R. in Insect-Plant Relationships (eds Visser, J. H. & Minks, A. K.) 297–305 (Pudoc, Wageningen, 1982).
Smith, D. C. J.N.Y. ent. Soc. (in the press).
Tauber, M. J., Tauber, C. A. & Masaki, S. Seasonal Adaptations of Insects (Oxford, New York, 1986).
Jaenike, J. Am. Nat. 117, 830–834 (1981).
Diehl, S. R. & Bush, G. L. A. Rev. Ent. 29, 471–504 (1984).
Reissig, W. H. Can. Ent. 109, 631–634 (1977).
Opp, S. B. & Prokopy, R. J. Fla. Ent. 70, 449–457 (1987).
Pickett, A. D. & Neary, M. E. Scient. Agric. 20, 551–556 (1940).
Reissig, W. H. & Smith, D. C. A. ent. Soc. Am. 71, 155–159 (1978).
Futuyma, D. J. & Mayer, G. C. Syst. Zool. 29, 254–271 (1980).
Smith, D. C. dissertation, Univ. Illinois (1986).
Slatkin, M. A. Rev. Ecol. Syst. 16, 393–430 (1985).
Paterson, H. E. H. S. Afr. J. Sci. 77, 113–119 (1981).
Futuyma, D. J. & Peterson, S. C. A. Rev. Ent. 30, 217–238 (1985).
McPheron, B. A., Smith, D. C. & Berlocher, S. H. Genetics 119, 445–451 (1988).
About this article
Cite this article
Smith, D. Heritable divergence of Rhagoletis pomonella host races by seasonal asynchrony. Nature 336, 66–67 (1988). https://doi.org/10.1038/336066a0
Preference, performance, and chemical defense in an endangered butterfly using novel and ancestral host plants
Scientific Reports (2021)
Geographic host use variability and host range evolutionary dynamics in the phytophagous insect Apagomerella versicolor (Cerambycidae)
The willow bud galler Euura mucronata Hartig (Hymenoptera: Tenthredinidae): one polyphage or many monophages?
Researches on Population Ecology (1998)