About: Seasonal change in the opportunity for sexual selection

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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 této studii jsme sledovali sezónní změny v reprodukční úspěšnosti (měřené indexem příležitosti k pohlavnímu výběru) u 20 experimentálních populací hořavky duhové. Zjistili jsme, že potenciál k pohlavnímu výběru je silně sezónní a v práci diskutujeme možné implikace pro teorii pohlavního výběru v přírodních populacích. (cs) We investigated seasonal changes in variation in reproductive success, measured as the opportunity for sexual selection, using parentage analysis in 20 experimental populations of the bitterling, a small freshwater fish with a promiscuous, resource-based mating system. We showed that although the largest males sired most offspring over the entire reproductive season, variation in reproductive success and hence the opportunity for sexual selection was low at the start of the season but increased significantly at its end. This seasonal difference probably arose from the superior competitive endurance of large males and from a higher temporal clustering of reproductively active females at the start of the breeding season than later in the season. The spatial distribution of oviposition sites had a negligible effect on the variation in reproductive success. We discuss the potential implications of our results for the importance and strength of sexual selection in natural populations. We investigated seasonal changes in variation in reproductive success, measured as the opportunity for sexual selection, using parentage analysis in 20 experimental populations of the bitterling, a small freshwater fish with a promiscuous, resource-based mating system. We showed that although the largest males sired most offspring over the entire reproductive season, variation in reproductive success and hence the opportunity for sexual selection was low at the start of the season but increased significantly at its end. This seasonal difference probably arose from the superior competitive endurance of large males and from a higher temporal clustering of reproductively active females at the start of the breeding season than later in the season. The spatial distribution of oviposition sites had a negligible effect on the variation in reproductive success. We discuss the potential implications of our results for the importance and strength of sexual selection in natural populations. (en)
Title	Seasonal change in the opportunity for sexual selection Sezónní změny v potenciálu pohlavního výběru (cs) Seasonal change in the opportunity for sexual selection (en)
skos:prefLabel	Seasonal change in the opportunity for sexual selection Sezónní změny v potenciálu pohlavního výběru (cs) Seasonal change in the opportunity for sexual selection (en)
skos:notation	RIV/68081766:_____/08:00093562!RIV08-AV0-68081766
http://linked.open.../vavai/riv/strany	642;651
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(KJB600930501), Z(AV0Z60930519)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Reichard, Martin Bryja, Josef
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	Ústav biologie obratlovců AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	393983
http://linked.open...ai/riv/idVysledku	RIV/68081766:_____/08:00093562
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	bitterling; body size; sexual selection; mating success; reproductive skew (en)
http://linked.open.../riv/klicoveSlovo	mating success reproductive skew sexual selection bitterling body size
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[F34D2957986A]
http://linked.open...i/riv/nazevZdroje	Molecular Ecology
http://linked.open...in/vavai/riv/obor	EH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	The impact of mating tactics on individual reproductive success and population parameters in the European bitterling: behavioural and genetic approach
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	17
http://linked.open...iv/tvurceVysledku	Bryja, Josef Reichard, Martin Smith, C.
http://linked.open...n/vavai/riv/zamer	Biodiverzita a ekologie obratlovců: Strategie ochrany a využívání přírodních populací
issn	0962-1083
number of pages	10 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Seasonal change in the opportunity for sexual selection Seasonal change in the opportunity for sexual selection Seasonal change in the opportunity for sexual selection Seasonal change in the opportunity for sexual selection

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