Abstract:
The functional response components, attack rate (a) and handling time (Th) of Coccinella septempunctata (L.) were evaluated against three prey sizes (1.0 mm 1.5mm and 2.0mm) and seven prey densities (15, 30, 45, 60, 75, 90 and 105) of Myzus persicae. The average prey consumption per unit time against, prey size 1.0 mm is 79 preys/arena/12h, which remained significantly higher at all prey densities. The changes in instantaneous attack rate (a) and prey handling time (Th) were the obvious function ofprey sizes and their densities. A very high correlations (r` = 0.96: Pst instar larvae to adult). The 4th instar larvae were found more voracious in consuming prey. Overall, the females consumed more prey than the males and virgin females consumed significantly higher prey during 12 hours.
Page(s):
46-51
DOI:
DOI not available
Published:
Journal: Pakistan journal of scientific research, Volume: 60, Issue: 3--4, Year: 2008