Fruit Flies pp 21-28 | Cite as

Evolutionary Biology of Certain Chilean Rhagoletis Species

  • D. Frias
Conference paper


In the past two decades, alternative models, besides the classic model of allopatric speciation, have been proposed. Among them is one published by White (1968), with semigeographic speciation. It is based on negative heterosis, and the sympatric speciation model of Maynard-Smith (1966). These are probably the two most outstanding. The latter has been proved by Bush (1969) in the sympatry surge of new host races of Rhagoletis pomonella in the United States. Similarly, Frias (1981), has postulated the appearance of sympatry in host races of R. conversa.


Larva Survival Land Bridge Allopatric Speciation Female Ovipositor Neotropical Species 
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© Springer Science+Business Media New York 1993

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  • D. Frias

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