About: Dispersal dynamics: Distribution of lady beetles (Coleoptera: Coccinellidae)

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About: Dispersal dynamics: Distribution of lady beetles (Coleoptera: Coccinellidae) Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	V tomto článku se odhaduje disperzní rychlost slunéček (tj. rychlost emigrace a imigrace) z publikovaných dat popisujících prostorové rozložení populace. Ukazuje se, že v rámci řady studovaných modelů nejlépe empirickým datům odpovídá model, kdy emigrační rychlost je úměrná poměru počtu slunéček ku hustotě kořisti na daném místě, zatímco imigrace je zcela náhodná. Prostorové rozložení odpovídající tomuto modelu se pak liší od tzv. Ideal Free Distribution, které se často používá jako nulová hypotéza pro prostorové rozložení populací. (cs) 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. 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. (en)
Title	Dispersal dynamics: Distribution of lady beetles (Coleoptera: Coccinellidae) Dispersal dynamics: Distribution of lady beetles (Coleoptera: Coccinellidae) (en) Disperzní dynamika: Prostorové rozložení slunéček (Coleoptera: Coccinellidae) (cs)
skos:prefLabel	Dispersal dynamics: Distribution of lady beetles (Coleoptera: Coccinellidae) Dispersal dynamics: Distribution of lady beetles (Coleoptera: Coccinellidae) (en) Disperzní dynamika: Prostorové rozložení slunéček (Coleoptera: Coccinellidae) (cs)
skos:notation	RIV/60077344:_____/08:00309982!RIV09-AV0-60077344
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA100070601), Z(AV0Z50070508)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Křivan, Vlastimil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Biologické centrum AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	363827
http://linked.open...ai/riv/idVysledku	RIV/60077344:_____/08:00309982
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	balanced dispersal; Coccinella septempunctata; habitat choice (en)
http://linked.open.../riv/klicoveSlovo	Coccinella septempunctata balanced dispersal habitat choice
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[7602EB6733B8]
http://linked.open...i/riv/nazevZdroje	European Journal of Entomology
http://linked.open...in/vavai/riv/obor	EH
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Mathematical models of biological networks
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	105
http://linked.open...iv/tvurceVysledku	Křivan, Vlastimil
http://linked.open...ain/vavai/riv/wos	000258546900005
http://linked.open...n/vavai/riv/zamer	Study of the regulation of insect organism, dynamics of insect populations and function of insects in ecosystems
issn	1210-5759
number of pages	5 (xsd:int)

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