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Dispersal dynamics: Distribution of lady beetles (Coleoptera: Coccinellidae)
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SYSNO ASEP 0309982 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dispersal dynamics: Distribution of lady beetles (Coleoptera: Coccinellidae) Title Disperzní dynamika: Prostorové rozložení slunéček (Coleoptera: Coccinellidae) Author(s) Křivan, Vlastimil (BC-A) RID, ORCID Number of authors 1 Source Title European Journal of Entomology. - : Biologické centrum AV ČR, v. v. i. - ISSN 1210-5759
Roč. 105, č. 3 (2008), s. 405-409Number of pages 5 s. Language eng - English Country CZ - Czech Republic Keywords balanced dispersal ; Coccinella septempunctata ; habitat choice Subject RIV EH - Ecology, Behaviour R&D Projects IAA100070601 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z50070508 - ENTU-I, BC-A (2005-2011) UT WOS 000258546900005 Annotation This article studies coccinellid dispersal in heterogeneous environments using some hypotheses on dispersal rates that correspond to empirical observations. It is assumed that emigration rates increase with decreasing patch payoff that is measured either as the number of aphids per a lady beetle, or as the number of aphids only. Three scenarios for immigration are considered: individuals choose patches unconditionally, immigration is proportional to patch quality, and immigration is proportional to patch payoff. Coccinellid spatial distributions corresponding to these assumptions are given by a power law. Using some data from the literature on distribution of Coccinella septempunctata it is shown that the model with emigration proportional to the ratio of the number of conspecifics to aphid density and unconditional immigration rates provides the best fit when compared with the other models. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2009
Number of the records: 1