Evidence for two genetically and chemically defined host races of Tyria jacobaeae (Arctiidae, Lepidoptera)

• Verfasst von: Wink, Michael [VerfasserIn]
• Verfasst von: Legal, Luc [VerfasserIn]
• Titel: Evidence for two genetically and chemically defined host races of Tyria jacobaeae (Arctiidae, Lepidoptera)
• Verf.angabe: Michael Wink and Luc Legal
• Jahr: 2001
• Umfang: 9 S.
• Fussnoten: Gesehen am 06.10.2017
• Titel Quelle: Enthalten in: Chemoecology
• Ort Quelle: Cham : Springer International Publishing AG, 1990
• Jahr Quelle: 2001
• Band/Heft Quelle: 11(2001), 4, Seite 199-207
• ISSN Quelle: 1423-0445
• DOI: doi:10.1007/PL00001852
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1564134229

Abstract

Summary. A widely distributed host race of Tyria jacobaeae lives on Senecio jacobaea and related species and accumulates pyrrolizidine alkaloids (“PA race”), another race, which is restricted to the Alps and found on Petasites paradoxus, sequesters sesquiterpenes, such as petasol and isopetasol. Nucleotide sequences of the mitochondrial 16S rDNA gene show 1% sequence divergence, indicating that genetical differences exist between the PA exploiting and the terpene-sequestering host races of T. jacobaeae. This finding suggests that both host races of T. jacobaeae must have been separated for some time already, possibly since the Pleistocene.