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Clumped distribution patterns in goldenrod aphids: genetic and ecological mechanisms
Author(s) -
PILSON DIANA,
RAUSHER MARK D.
Publication year - 1995
Publication title -
ecological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.865
H-Index - 81
eISSN - 1365-2311
pISSN - 0307-6946
DOI - 10.1111/j.1365-2311.1995.tb00431.x
Subject(s) - biology , host (biology) , aphid , herbivore , ecology , botany
Abstract.1 The aphids Uroleucon tissoti and U.nigrotuberculatum both exhibit significantly aggregated distribution patterns across clumps of their common host plant Solidago altissima , the tall goldenrod. However, U.nigrotuberculatum is significantly more aggregated than is U.tissoti . We tested the hypothesis that goldenrod genotype‐by‐U.tissoti genotype interactions for aphid performance characters could partially account for this difference. 2 Only one of the characters we measured showed a significant genotype‐bygenotype interaction; therefore it is unlikely that such interactions affect the distribution of U.tissoti across goldenrod stems. 3 In addition, we found that three environmental variables (genetic variation for resistance to herbivory, host plant morphology, and local host density) affect the degree of aggregation found in both U.tissoti and U.nigrotuberculatum populations.