Behavioral evidence for host-race formation in Eurosta solidaginis

We report behavioral evidence that Eurosta solidaginis, a stem-galling tephritid fly, has formed host races on its two goldenrod hosts, Solidago altissima and S. gigantea. Previous work has shown that flies from each host plant differ electrophoretically at the level of host races. The two host-asso...

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Bibliographic Details
Published in:Evolution 1993-12, Vol.47 (6), p.1696-1710
Main Authors: Craig, T.P. (Arizona State University West, Phoenix, AZ.), Itami, J.K, Abrahamson, W.G, Horner, J.D
Format: Article
Language:English
Subjects:
Animals
Assortative mating
Behavior
Biological and medical sciences
Classical genetics, quantitative genetics, hybrids
COMPORTAMIENTO SEXUAL
COMPORTEMENT SEXUEL
Diptera
ESPECE
ESPECIES
EUROSTA
Eurosta solidaginis
EVOLUCION
EVOLUTION
FEEDING PREFERENCES
FILOGENIA
Fundamental and applied biological sciences. Psychology
gall
Gardens
Genetics of eukaryotes. Biological and molecular evolution
HERBIVORE
HERBIVORES
HERBIVOROS
herbivory
Host plants
host race
Host-parasite relationships
Insect-plant relationships
Insects
Invertebrata
Invertebrates
Mating behavior
MATING PREFERENCES
OVIPOSICION
OVIPOSITION
PHYLOGENIE
PHYLOGENY
PHYSIOLOGICAL RACES
Phytophagous insects
Plant gall
Plant reproduction
Plants
PONTE
PREFERENCE ALIMENTAIRE
PREFERENCIAS ALIMENTARIAS
RACE PHYSIOLOGIQUE
RAZAS FISIOLOGICAS
SEXUAL BEHAVIOUR
SOLIDAGO
SOLIDAGO ALTISSIMA
SOLIDAGO GIGANTEA
SPECIATION
SPECIES
sympatric speciation
SYMPATRIC SPECIES
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Description
Summary:We report behavioral evidence that Eurosta solidaginis, a stem-galling tephritid fly, has formed host races on its two goldenrod hosts, Solidago altissima and S. gigantea. Previous work has shown that flies from each host plant differ electrophoretically at the level of host races. The two host-associated populations were truly sympatric and were frequently found on host plants of the two species growing interdigitated with each other. Each host-associated population demonstrated a strong preference for ovipuncturing its own host. The S. gigantea-associated population emerged 10 to 14 d earlier than the S. altissima-associated population, contributing to the reproductive isolation between populations. Partial reproductive isolation is also maintained by a preference for mating on the host from which the fly emerged. The populations meet the criteria established for host races, suggesting that they may be in an intermediate stage of sympatric speciation.
ISSN:0014-3820
1558-5646
DOI:10.1111/j.1558-5646.1993.tb01262.x