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Toxicity of phosphine on the developmental stages of rust-red flour beetle, Tribolium castaneum Herbst over a range of concentrations and exposures

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Relation http://ir.cftri.com/12151/
http://dx.doi.org/10.1007/s13197-015-1799-y
 
Title Toxicity of phosphine on the developmental stages of rust-red
flour beetle, Tribolium castaneum Herbst over a range
of concentrations and exposures
 
Creator Manivannan, S.
 
Subject 17 Toxicology
 
Description The susceptibility of the developmental stages of
rust-red flour beetle, Tribolium castaneum to a range of concentrations
of phosphine over varying durations from 24 to
168 h was reconnoitered in the laboratory at 25±2 °C.
Responses of the life stages exposed to phosphine were compared
with those of un-treated controls over 24, 48, 72, 96,
120, 144 and 168 h exposures and mortality was assessed after
14 days. Among the life stages tested, pupae were more tolerant
to phosphine followed by the egg and the larval instars. At
24 h, the maximum LC50 value was observed in case of egg;
1.571 mgL−1; followed by the pupae, 6th instar, 4th instar and
2nd instar larvae with LC50 values of 1.184, 0.336, 0.212 and
0.081 mgL−1 respectively. However, continued exposure of
the developmental stages to phosphine, recorded maximum
LC values in the pupae followed by egg and the larval instars.
A linear increase in the mortality responsewas witnessed in all
the insect stages when the exposure periods were extended
from 24 to 168 h with increasing concentrations of phosphine,
conversely significant increase in mortality was greatly apparent
during the initial treatment periods.
 
Date 2015
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/12151/1/J.Food%20Sci%20Technol_2015%2952%2810%29_6810.pdf
Manivannan, S. (2015) Toxicity of phosphine on the developmental stages of rust-red flour beetle, Tribolium castaneum Herbst over a range of concentrations and exposures. Journal of Food Science and Technology, 52 (10). pp. 6810-6815.