Title Biological control
potential of Coccinella septempunctata Linnaeus (Coleoptera:
Coccinellidae) on major homopteran pests of rapeseed.
Author(s) Bilashini,
Y.; Singh,
T. K.; Singh,
R. K. R.
Author Affiliation Aphid
Research Laboratory, Department of Life Sciences, Manipur University, Canchipur,
Imphal - 795 003, Manipur, India.
Journal article; Conference
paper Journal
of Biological
Control 2007 Vol. 21 No. Special pp. 157-162
ISSN 0971-930X
Publisher information Society
for Biocontrol Advancement, Bangalore, India
Language of Text English
Record Number
20083078427
Abstract
The role of the predator, Coccinella septempunctata in regulating the
field density of the Brassica aphids, Lipaphis erysimi
(Kaltenbach), Myzus persicae (Sulzer) and Brevicoryne brassicae
(Linnaeus) was studied for two cropping seasons (2003-2005) on rapeseed,
Brassica juncea cv. M27. The numerical density of the predator was
observed to increase in response to increase in density of aphid prey in the
field. The correlation analysis showed significant positive correlationship
between the predator and two aphid species viz., L. erysimi and M.
persicae, but non-significant positive relationship was observed with B.
brassicae. In the laboratory, prey preference of C. septempunctata
was in the order L. erysimi > M. persicae > B.
brassicae.