searching efficiency (a') (attack rate) and handling time are two major components of natural enemies’ functional response and are usually used to evaluate their effectiveness. the age-specific searching efficiency of aphidoletes aphidimyza (rondani) was studied during its larval stage. the experiment was conducted in terms of age-specific functional response to the varying density (5, 1...

A string matching approach is proposed to find a region correspondance between two images. Regions and their spatial relationships are represented by two combinatorial pyramids encoding two segmentation hierarchies. Our matching algorithm is decomposed in two steps: We first require that the features of the two matched regions be similar. This threshold on the similarity of the regions to be ma...

searching efficiency is a key parameter of functional response which is in turn the major components in the selection of predators and parasitoids for biological control. searching efficiency of scymnus syriacus mulsant feeding on aphis craccivora koch was determined at five different experimental arenas (i.e. 195, 247, 304, 385 and 650 cm2) on broad bean (vicia fabae l.). to do this, functiona...

searching efficiency and handling time are two major components of functional response and are usually used to evaluate effectiveness of natural enemies. the effect of different foraging periods on the functional response of larval aphidoletes aphidimyza (rondani) (dip.: cecidomyiidae) feeding on third instar nymphs of aphis craccivora was studied. the experiment was conducted in terms of time-...

this study was conducted to evaluate the age-specific functional response of psyllaephagus zdeneki noyes & fallahzadeh (hymenoptera: encyrtidae) at different nymph densities of olive psyllid, euphyllura pakistanica loginova (hemiptera: psyllidae). due to parasitoid behaviour of feeding and parasitizing the host, both traits were separately explored on a daily functional response. results of...

Constrained skyline queries retrieve all points that optimize some user’s preferences subject to orthogonal range constraints, but at significant computational cost. This paper is the first to propose caching to improve constrained skyline query response time. Because arbitrary range constraints are unlikely to match a cached query exactly, our proposed method identifies and exploits similar ca...

the pea aphid, acyrthosiphon pisum (harris) is one of the most important pests of pea throughout the world.host stage preference under choice and no-choice tests and age-specific functional response of praon volucre (haliday) parasitizing a. pisum were investigated. the experiments were carried out under laboratory conditions at 25 ± 1 °c, 60 ± 5% rh and a photoperiod of 14: 10 h (l: d). functi...

functional response of trichogramma brassicae bez. to different densities of eggs of two host species anagasta kuehniella zell. and plodia interpunctella hub. was studied under laboratory conditions (24±1°c, 65±10% rh and 16: 8 l:d photoperiodism). one day old eggs of either host were offered to individual females of t.brassicae in densities 2, 4, 8, 16, 32, 64 and 128 respectively in 21, 15, 1...