Premium
Electrical Penetration Graph analysis reveals population differentiation of host‐plant probing behaviors within the aphid species Uroleucon ambrosiae
Author(s) -
Bernays Elizabeth A.,
Funk Daniel J.
Publication year - 2000
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1046/j.1570-7458.2000.00729.x
Subject(s) - biology , aphid , host (biology) , botany , population , ecology , demography , sociology
Uroleucon ambrosiae collected from the eastern and the southwestern United States were studied in relation to host‐plant probing. In the field, eastern aphids are highly specific on Ambrosia trifida , while southwestern aphids feed on Ambrosia trifida plus many other species in the family Asteraceae. Electrical penetration graphs of insects on the principal host, A. trifida , and an additional host of southwestern populations, Heterotheca subaxillaris , revealed regional differentiation in host‐associated aphid behaviors, specifically in the first phase of subcuticular probing, and in phloem finding activities. Eastern aphids used A. trifida more efficiently than southwestern aphids, but were demonstrably less vigorous in their probing activities on H. subaxillaris .