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The area of discovery and searching strategy of a primary parasite and two hyperparasites
Author(s) -
KFIR RAMI,
PODOLER HAGGAI,
ROSEN DAVID
Publication year - 1976
Publication title -
ecological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.865
H-Index - 81
eISSN - 1365-2311
pISSN - 0307-6946
DOI - 10.1111/j.1365-2311.1976.tb01235.x
Subject(s) - biology , parasite hosting , host (biology) , scale (ratio) , ecology , computer science , world wide web , physics , quantum mechanics
1 Two hyperparasites, Cheiloneurus paralia (Walker) and Marietta exitiosa Compere, of Microterys flavus (Howard), a primary parasite of the brown soft scale Coccus hesperidum L. have been studied. 2 The area of discovery of the hyperparasites for secondary hosts (scale insects) is greater than that of the primary parasite, indicating higher searching efficiency of the secondary parasites. 3 Cheiloneurus has a higher searching efficiency measured as its area of discovery for discovering both the secondary (scale insect) and the primary ( Microterys ) hosts, as compared with Marietta.4 The searching efficiency of Cheiloneurus increased in the presence of its own males. 5 In each species there is a non‐linear relationship between the searching efficiency and female density. 6 Cheiloneurus and Marietta present two differing searching strategies. Cheiloneurus tends to exploit as many primary hosts as possible in each secondary host encountered, whereas Marietta , tends to disperse its progeny more regularly by avoiding, to a certain extent, the exploitation of more than one host in each scale insect encountered.