A three-trophic-level analysis of the effects of plant hybridization on a leaf mining moth

Relationships between host plant hybridization in the Quercus grisea x Quercus gambelii species complex and the distribution and performance of a leaf-mining moth in the genus Phyllonorycter. In 2 years at two sites Phyllonorycter densities were lowest on Q. grisea and increased through the categori...

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Bibliographic Details
Published in:Oecologia 1994-11, Vol.100 (1-2), p.66-73
Main Authors: Preszler, R.P. (New Mexico State Univ., Las Cruces (USA). Dept. of Biology), Boecklen, W.J
Format: Article
Language:English
Subjects:
Genetic hybridization
Gracillariidae
Herbivores
HIBRIDACION
HIBRIDOS
Host plants
HYBRIDATION
HYBRIDE
Hybridity
Lepidoptera
Mortality
Parasite hosts
Parasitism
PARASITISME
PARASITISMO
PERFORMANCE DE REPRODUCTION
PHYLLONORYCTER
Phytophagous insects
Plants
QUERCUS GAMBELII
Quercus grisea
RELACIONES HUESPED PARASITO
RELATION HOTE PARASITE
REPRODUCTIVIDAD
Taxa
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Summary:Relationships between host plant hybridization in the Quercus grisea x Quercus gambelii species complex and the distribution and performance of a leaf-mining moth in the genus Phyllonorycter. In 2 years at two sites Phyllonorycter densities were lowest on Q. grisea and increased through the categories of hybrid host plants to Q. gambelii. Direct host plant effects on Phyllonorycter performance were consistent with Phyllonorycter distribution; unexplained mortality of larvae in the mines, which is often associated with direct plant effects, decreased from Q. grisea through the hybrids to Q. gambelii. Plant hybridization influenced parasitism of Phyllonorycter. Parasitism was density dependent, and across all densities was higher on Q. grisea and Q. gambelii than on hybrid host plants.
ISSN:0029-8549
1432-1939
DOI:10.1007/BF00317131