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The effect of starvation and subsequent feeding on the reproductive potential of the grain aphid, S itobion avenae
Author(s) -
Xu Xiangli,
He Shuqi,
Wu Junxiang
Publication year - 2012
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 - 10.1111/j.1570-7458.2012.01287.x
Subject(s) - alate , starvation , fecundity , biology , sitobion avenae , aphid , longevity , zoology , homoptera , aphididae , botany , pest analysis , endocrinology , population , demography , genetics , sociology
The short‐term starvation tolerance of alate and apterous morphs and the effect of periods of starvation on the longevity and fecundity of alate adults were evaluated in the grain aphid, S itobion avenae ( F abricius) ( H emiptera: A phididae). Alate adults exhibited a proportionally larger length of survival compared with apterous adults under continuous starvation conditions. Newly molted pre‐reproductive adults were starved for 0–96 h and their survival rate on the 1st day after recovering with food was not significantly different from that of control aphids. Starvation reduced lifetime fecundity, but increased the reproductive rate immediately after nutrition being improved. Fecundity and longevity after 24, 48, 72, and 96 h of starvation were significantly higher than after 120 or 144 h of starvation. However, no significant differences were observed for alate adults after 24, 48, 72, or 96 h of starvation. This study suggests that the ability of alatae to adapt to brief periods of starvation could be one of the important factors affecting the reproductive success of aphids during delays in locating host plants.