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Statements

Subject Item
n2:RIV%2F68081766%3A_____%2F10%3A00345138%21RIV11-GA0-68081766
rdf:type
skos:Concept n15:Vysledek
dcterms:description
Female density and resource availability are two key variables that shape mating systems. Here we tested mean crowding, defined as the number of males per unit of resource, and density per se, defined as the number of individuals present per unit area, to investigate their effect on the mating system of Rhodeus ocellatus. Males were exposed to combinations of high and low levels of crowding and density, while the operational sex ratio was held constant. High levels of crowding significantly affected the proportion of mussel spawning sites defended by males and the proportion of mussels into which sperm was released. In contrast to theoretical predictions, neither density nor crowding influenced overall male aggressive behaviours. Density, but not crowding, had a significant effect on male courtship rate, which arose as a possible trade-off between intra-sexual competition and inter-sexual behaviour. Female density and resource availability are two key variables that shape mating systems. Here we tested mean crowding, defined as the number of males per unit of resource, and density per se, defined as the number of individuals present per unit area, to investigate their effect on the mating system of Rhodeus ocellatus. Males were exposed to combinations of high and low levels of crowding and density, while the operational sex ratio was held constant. High levels of crowding significantly affected the proportion of mussel spawning sites defended by males and the proportion of mussels into which sperm was released. In contrast to theoretical predictions, neither density nor crowding influenced overall male aggressive behaviours. Density, but not crowding, had a significant effect on male courtship rate, which arose as a possible trade-off between intra-sexual competition and inter-sexual behaviour.
dcterms:title
The effect of crowding and density on male mating behaviour in the rose bitterling (Rhodeus ocellatus) The effect of crowding and density on male mating behaviour in the rose bitterling (Rhodeus ocellatus)
skos:prefLabel
The effect of crowding and density on male mating behaviour in the rose bitterling (Rhodeus ocellatus) The effect of crowding and density on male mating behaviour in the rose bitterling (Rhodeus ocellatus)
skos:notation
RIV/68081766:_____/10:00345138!RIV11-GA0-68081766
n5:aktivita
n14:P n14:Z
n5:aktivity
P(GA206/09/1163), Z(AV0Z60930519)
n5:cisloPeriodika
8
n5:dodaniDat
n10:2011
n5:domaciTvurceVysledku
n9:9466703
n5:druhVysledku
n13:J
n5:duvernostUdaju
n16:S
n5:entitaPredkladatele
n7:predkladatel
n5:idSjednocenehoVysledku
255925
n5:idVysledku
RIV/68081766:_____/10:00345138
n5:jazykVysledku
n11:eng
n5:klicovaSlova
density-dependence; mating system; sexual selection; sperm competition; territoriality
n5:klicoveSlovo
n12:density-dependence n12:mating%20system n12:territoriality n12:sexual%20selection n12:sperm%20competition
n5:kodStatuVydavatele
NL - Nizozemsko
n5:kontrolniKodProRIV
[F848FF8617BF]
n5:nazevZdroje
Behaviour
n5:obor
n8:EG
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
3
n5:projekt
n18:GA206%2F09%2F1163
n5:rokUplatneniVysledku
n10:2010
n5:svazekPeriodika
147
n5:tvurceVysledku
Casalini, M. Reichard, Martin Smith, C.
n5:wos
000279562700006
n5:zamer
n17:AV0Z60930519
s:issn
0005-7959
s:numberOfPages
16