Effect of Nitrogen Fertilizer on the Intrinsic Rate of Increase of Hysteroneura setariae (Thomas) (Homoptera: Aphididae) on Rice (Oryza sativa L.)

We studied the intergenerational effects of nitrogen (N) fertilizer applications to rice plants on the size, fecundity, and intrinsic rate of increase (rm) of Hysteroneura setariae (Thomas). Treatments consisted of rearing aphids on rice plants receiving 0, 50, 100, and 150% of the standard N fertil...

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Bibliographic Details
Published in:Environmental entomology 2005-08, Vol.34 (4), p.938-943
Main Authors: Jahn, Gary C, Almazan, Liberty P, Pacia, Jocelyn B
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Aphidoidea
application rate
Autoecology
Biological and medical sciences
body size
fecundity
food plants
Fundamental and applied biological sciences. Psychology
Hysteroneura
Hysteroneura setariae
insect reproduction
intrinsic rate of increase
mortality
nitrogen fertilizer
nitrogen fertilizers
Oryza sativa
Phytopathology. Animal pests. Plant and forest protection
PLANT–INSECT INTERACTIONS
progeny
Protozoa. Invertebrata
Protozoa. Invertebrates
Records, symptoms, damages, economic importance, population surveys
rice
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Summary:We studied the intergenerational effects of nitrogen (N) fertilizer applications to rice plants on the size, fecundity, and intrinsic rate of increase (rm) of Hysteroneura setariae (Thomas). Treatments consisted of rearing aphids on rice plants receiving 0, 50, 100, and 150% of the standard N fertilizer rates. Adult females produced on the 0 and 150% treatments were transferred to new plants at 0 or 150% N levels to create a matrix of four treatments: 0–0, 0–150, 150–0, and 150–150%. Second-generation aphids produced on 150% N plants had significantly higher survivorship, fecundity, and rm regardless of the N treatment of plants that parents fed on. N levels had no observed effect on head width. Aphids reared on 0% N plants whose parents were also reared on 0% N plants had significantly shorter body lengths than aphids on all other treatments, including the 150–0% treatment, indicating that the effect of a high N diet was expressed in a second generation of aphids. Results are discussed in the context of aphid population outbreaks in rice fields and in greenhouses.
ISSN:0046-225X
1938-2936
DOI:10.1603/0046-225X-34.4.938