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Generation specific life history traits of winged Sitobion avenae
Author(s) -
Helden A. J.,
Dixon A. F. G.
Publication year - 1998
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.1570-7458.1998.00358.x
Subject(s) - sitobion avenae , biology , aphididae , aphid , population dynamics , offspring , homoptera , pest analysis , parthenogenesis , zoology , botany , agronomy , fecundity , embryo , population , pregnancy , genetics , demography , sociology
When reared under constant conditions from egg hatch the proportion of offspring of Sitobion avenae (F.) (Aphididae: Macrosiphini) that developed into winged individuals declined from the second to fourth generation. The winged individuals produced in these three generations showed a progressive decrease in their wet and dry weights and an increase in the length of their largest embryo with generation. The trend in winged individual production and also the trends in their size and reproductive strategy appear to be programmed and are similar to the generation specific strategies that have been described in other species of aphid.