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Toxicological and behavioral effects of Chlorfluazuron on pheromone production and perception of Tribolium castaneum (Coleoptera: Tenebrionidae)
Egyptian Academic Journal of Biological Sciences C Physiology and Molecular Biology • 2010
Publication Information
Authors
Reda F. A. Bakr1; Olfat M. El-Monairy2; Nehad M, El-barky2 and
Nancy M. B. El-shourbagy2.
Keywords
Tribolium castaneum, Chlorfluazuron, pheromone production and perception.
Journal
Egyptian Academic Journal of Biological Sciences C Physiology and Molecular Biology
Publisher
Egypts Presidential Specialized Council for Education and Scientific Research
Volume
2
Issue
2090-0767
Pages
61 – 72
publication.type
Local
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
Chlorfluazuron (Atabron) is an insect growth regulator (IGR) belongs to
benzoylphenyl urea for controlling the major insect pests. The present work aims to
investigate the toxicological and biological effects of Chlorfluazuron on the 4th larval
instar of rust red flour beetle, Tribolium castaneum at different concentrations (0.1,
0.5, 1, 5 and 10 ppm) under laboratory conditions. The results revealed high
significant mortality in larvae, pupae and adults. The obtained results showed
significant decrease in adult emergence, fecundity and fertility. Chlorfluazuron caused
also a significant prolongation in larval and pupal developmental period.
When 4th larval instar treated with LC50 value of Chlorfluazuron (1.2ppm)
female production and male's perception to pheromone affected. The results indicated
that both treated and untreated sexes of the rust red flour beetle could secrete a
pheromone that was able to stimulate the opposite sex as well as its own sex.
Although production and responsiveness of pheromone in untreated groups were
significantly higher than treated one. Females secreted a pheromone that stimulated
males is sex pheromone. While the pheromone secreted by males is an aggregation
pheromone.
Production and responsiveness to pheromone in untreated virgin sexes was
significantly higher than treated one at photophase and scotophase. The maximum
production and perception of pheromone in untreated sex were at 15.00 p.m. While a
peak in treated one was at 13.00p.m.
benzoylphenyl urea for controlling the major insect pests. The present work aims to
investigate the toxicological and biological effects of Chlorfluazuron on the 4th larval
instar of rust red flour beetle, Tribolium castaneum at different concentrations (0.1,
0.5, 1, 5 and 10 ppm) under laboratory conditions. The results revealed high
significant mortality in larvae, pupae and adults. The obtained results showed
significant decrease in adult emergence, fecundity and fertility. Chlorfluazuron caused
also a significant prolongation in larval and pupal developmental period.
When 4th larval instar treated with LC50 value of Chlorfluazuron (1.2ppm)
female production and male's perception to pheromone affected. The results indicated
that both treated and untreated sexes of the rust red flour beetle could secrete a
pheromone that was able to stimulate the opposite sex as well as its own sex.
Although production and responsiveness of pheromone in untreated groups were
significantly higher than treated one. Females secreted a pheromone that stimulated
males is sex pheromone. While the pheromone secreted by males is an aggregation
pheromone.
Production and responsiveness to pheromone in untreated virgin sexes was
significantly higher than treated one at photophase and scotophase. The maximum
production and perception of pheromone in untreated sex were at 15.00 p.m. While a
peak in treated one was at 13.00p.m.