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Impact of elevated CO2 on lepidopteron insect pests of Castor

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Title Impact of elevated CO2 on lepidopteron insect pests of Castor
Impact of elevated CO2 on lepidopteron insect pests of Castor
 
Creator ICAR_CRIDA
 
Subject Achaea janata, castor, elevated CO2 , generations, insect performance indices, potential population increase index
 
Description Not Available
The growth, development and consumption of four successive
generations of castor semilooper, Achaea janata reared on castor
(Ricinus communis L.) foliage grown under elevated carbon dioxide
(550 and 700 parts per million) concentrations in open top
chambers were estimated at CRIDA, Hyderabad, India.
Significantly lower leaf nitrogen , higher carbon , higher relative
proportion of carbon to nitrogen (C: N) and higher polyphenols
expressed in terms of tannic acid equivalents were observed in
castor foliage grown under elevated carbon dioxide levels.
Significant influence of elevated carbon dioxide on life history
parameters of A. janata over four generations was noticed. Longer
larval duration, differential pupal weights and increased larval
survival rates of A. janata in successive four generations were
observed under elevated carbon dioxide than ambient. Reduced
fecundity was observed over generations under each elevated
carbon dioxide level. The consumption per larva of A. janata fed
on castor foliage grown under elevated carbon dioxide increased
from first to fourth generation. Potential population increase index
for successive generations was found lower in both elevated
carbon dioxide concentrations than in case of ambient. The present
findings indicate that elevated carbon dioxide levels significantly
altered the quality of the castor foliage resulting in higher
consumption by larvae, better assimilation higher values of
relative consumption rate and approximate digestibility, slow
growth (lower relative growth rate) and took longer time (two
days more than ambient) to pupation to produce in less fecund
adults over generations.
Not Available
 
Date 2022-01-27T04:43:14Z
2022-01-27T04:43:14Z
2012-01-01
 
Type Book
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/68996
 
Language English
 
Relation Not Available;
 
Publisher ICAR_CRIDA