Host-plant chemicals and distribution of Neuquenaphis on Nothofagus

Quiroz, A.; Fuentes-Contreras, E; Ramirez, C. C.; Russell G.B.; Niemeyer H.M.

Keywords: tree, host, nothofagus, parasite, species, interaction, agent, volatile, article, difference, aphid, analysis, neuquenaphis, chemical, nonhuman, smelling, phytochemistry, plant-insect

Abstract

Extractable metabolites from leaves (EM) and volatiles released from six Nothofagus species were analyzed by TLC and GC-MS, respectively. Aphids of the genus Neuquenaphis, closely associated to Nothofagus, were sampled on each Nothofagus species. Cluster analyses of Nothofagus species were performed based on the presence or absence of EM and volatiles. Dissimilarity distances, from the cluster analyses of EM and volatiles, were used to evaluate their association with the aphid distribution. A major component identified from EM and volatiles of three species of Nothofagus, ?- agarofuran, was attractive to alates of the oligophagous Neuquenaphis sensoriata, which use them as hosts. These results suggest that chemicals play a significant role in the host-plant associations between Neuquenaphis and Nothofagus.

Más información

Título de la Revista: JOURNAL OF CHEMICAL ECOLOGY
Volumen: 25
Número: 5
Editorial: Springer
Fecha de publicación: 1999
Página de inicio: 1043
Página final: 1054
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-0032913998&partnerID=q2rCbXpz