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Statements

Subject Item
n2:RIV%2F68081766%3A_____%2F03%3A67030015%21RIV%2F2004%2FAV0%2FA67004%2FN
rdf:type
skos:Concept n5:Vysledek
dcterms:description
Zootoca vivipara is a small lizard that shows sexual dimorphism in head size. Males have larger heads than females of the same body size. By observing matings and aggressive interactions between males in the laboratory, we investigated whether this sexual dimorphism could be the result of intra- and/or intersexual selection. Winners of male-male interactions had larger heads than losers. During mating attempts, males with larger heads succeeded in grasping a female faster than males with smaller heads. It follows that head size in Z vivipara may affect male reproductive success both through intrasexual competition (fighting ability) and through intersexual selection (grasping ability). This suggests that sexual selection may be the cause for the sexual dimorphism in head size in this species. Zootoca vivipara is a small lizard that shows sexual dimorphism in head size. Males have larger heads than females of the same body size. By observing matings and aggressive interactions between males in the laboratory, we investigated whether this sexual dimorphism could be the result of intra- and/or intersexual selection. Winners of male-male interactions had larger heads than losers. During mating attempts, males with larger heads succeeded in grasping a female faster than males with smaller heads. It follows that head size in Z vivipara may affect male reproductive success both through intrasexual competition (fighting ability) and through intersexual selection (grasping ability). This suggests that sexual selection may be the cause for the sexual dimorphism in head size in this species.
dcterms:title
Evolutionary maintenance of sexual dimorphism in head size in the lizard Zootoca vivipara: a test of two hypotheses. Evolutionary maintenance of sexual dimorphism in head size in the lizard Zootoca vivipara: a test of two hypotheses.
skos:prefLabel
Evolutionary maintenance of sexual dimorphism in head size in the lizard Zootoca vivipara: a test of two hypotheses. Evolutionary maintenance of sexual dimorphism in head size in the lizard Zootoca vivipara: a test of two hypotheses.
skos:notation
RIV/68081766:_____/03:67030015!RIV/2004/AV0/A67004/N
n6:strany
7;13
n6:aktivita
n14:P
n6:aktivity
P(KSK6005114)
n6:cisloPeriodika
1
n6:dodaniDat
n15:2004
n6:domaciTvurceVysledku
n7:4672526
n6:druhVysledku
n12:J
n6:duvernostUdaju
n8:S
n6:entitaPredkladatele
n13:predkladatel
n6:idSjednocenehoVysledku
606525
n6:idVysledku
RIV/68081766:_____/03:67030015
n6:jazykVysledku
n16:eng
n6:klicovaSlova
sexual dimorphism; agonistic interactions; copulation
n6:klicoveSlovo
n11:agonistic%20interactions n11:sexual%20dimorphism n11:copulation
n6:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n6:kontrolniKodProRIV
[A1C78925A724]
n6:nazevZdroje
Journal of Zoology
n6:obor
n17:EG
n6:pocetDomacichTvurcuVysledku
1
n6:pocetTvurcuVysledku
2
n6:pocetUcastnikuAkce
0
n6:pocetZahranicnichUcastnikuAkce
0
n6:projekt
n9:KSK6005114
n6:rokUplatneniVysledku
n15:2003
n6:svazekPeriodika
259
n6:tvurceVysledku
Gvoždík, Lumír Van Damme, R.
s:issn
0952-8369
s:numberOfPages
7