Fotukkiaii, S., Sahragard, A. (2013). Functional response of Serangium montazerii (Col.: Coccinellidae) to different densities of Dialeurodes citri (Hem.: Aleyrodidae): an open-patch approach. , 33(2), 1-7.
S. M. Fotukkiaii; A. Sahragard. "Functional response of Serangium montazerii (Col.: Coccinellidae) to different densities of Dialeurodes citri (Hem.: Aleyrodidae): an open-patch approach". , 33, 2, 2013, 1-7.
Fotukkiaii, S., Sahragard, A. (2013). 'Functional response of Serangium montazerii (Col.: Coccinellidae) to different densities of Dialeurodes citri (Hem.: Aleyrodidae): an open-patch approach', , 33(2), pp. 1-7.
Fotukkiaii, S., Sahragard, A. Functional response of Serangium montazerii (Col.: Coccinellidae) to different densities of Dialeurodes citri (Hem.: Aleyrodidae): an open-patch approach. , 2013; 33(2): 1-7.

Functional response of Serangium montazerii (Col.: Coccinellidae) to different densities of Dialeurodes citri (Hem.: Aleyrodidae): an open-patch approach

نامه انجمن حشره شناسی ایران
Article 1, Volume 33, Issue 2, September 2013, Pages 1-7    PDF (182.51 K)
Authors
S. M. Fotukkiaii; A. Sahragard*
Abstract
The functional response of a predator is the base of prey-predator dynamics. Functional response of Serangium montazerii Fürsch at different egg densities (50, 100, 150, 200 and 250) of Dialeurodes citri (Ashmead) was studied in an open-patch experiment, in a growth chamber (25 ± 1°C, 65 ± 5% RH and a photoperiod of 16: 8 L: D h) on ‘Thompson’ navel orange (Citrus sinensis cv. Thompson) apical leaves. A type II functional response was obtained using logistic regression. The searching efficiency (a') and handling times (Th) of the female adults using nonlinear least-square regression were estimated as 0.0421 ± 0.00945 h-1 and 0.0896 ± 0.0362 h, respectively. Mean times required for the female predator to settle in a patch were 121.4, 140, 116, 83 and 78 minutes at above-mentioned prey densities, respectively. It was inversely density dependent (R2 = 0.740). The proportion of female predators remaining in open patches at the end of the experiment was directly dependent on prey density (R2 = 0.9). It was concluded that the type of functional response obtained here was in agreement with studies on this predator in closed patches.
Keywords
Serangium montazerii; different densities; Functional response; open patch
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