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Leaf temperature of soybean grown under elevated CO 2 increases Aphis glycines (Hemiptera: Aphididae) population growth
Author(s) -
O’Neill Bridget F.,
Zangerl Arthur R.,
DeLucia Evan H.,
Casteel Clare,
Zavala Jorge A.,
Berenbaum May R.
Publication year - 2011
Publication title -
insect science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 45
eISSN - 1744-7917
pISSN - 1672-9609
DOI - 10.1111/j.1744-7917.2011.01420.x
Subject(s) - aphididae , biology , aphid , soybean aphid , hemiptera , stomatal conductance , population , carbon dioxide , horticulture , agronomy , botany , homoptera , photosynthesis , pest analysis , ecology , demography , sociology
Plants grown under elevated carbon dioxide (CO 2 ) experience physiological changes that influence their suitability as food for insects. To determine the effects of living on soybean ( Glycine max Linnaeus) grown under elevated CO 2 , population growth of the soybean aphid ( Aphis glycines Matsumura) was determined at the SoyFACE research site at the University of Illinois, Urbana‐Champaign, Illinois, USA, grown under elevated (550 μL/L) and ambient (370 μL/L) levels of CO 2 . Growth of aphid populations under elevated CO 2 was significantly greater after 1 week, with populations attaining twice the size of those on plants grown under ambient levels of CO 2 . Soybean leaves grown under elevated levels of CO 2 were previously demonstrated at SoyFACE to have increased leaf temperature caused by reduced stomatal conductance. To separate the increased leaf temperature from other effects of elevated CO 2 , air temperature was lowered while the CO 2 level was increased, which lowered overall leaf temperatures to those measured for leaves grown under ambient levels of CO 2 . Aphid population growth on plants grown under elevated CO 2 and reduced air temperature was not significantly greater than on plants grown under ambient levels of CO 2 . By increasing G lycine max leaf temperature, elevated CO 2 may increase populations of Aphis glycines and their impact on crop productivity.