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Statements

Subject Item
n2:RIV%2F68081766%3A_____%2F05%3A00023254%21RIV06-AV0-68081766
rdf:type
skos:Concept n15:Vysledek
dcterms:description
Experimentálně jsme testovali vliv přítomnosti neteritoriálních samců na chování samic hořavky duhové. Zjistili jsme, že samice se dvoří neteritoriálním samcům a podněcují je k oplození jiker. Touto strategií zvyšují oplozenost svých jiker. Zjištění má významné souvislosti pro evoluci pohlavních strategií a evoluci samčích reprodukčních strategií. In most species there is greater variance in reproductive fitness among males than females. A consequence is the evolution of alternative male mating tactics, including sneaking behaviour whereby males attempt to mate with females courted by other males, which could undermine female choice. In bitterling (Rhodeus sericeus), fish that lay their eggs on the gills of living freshwater mussels, sneaking is common and successful. Here we show that female bitterling can significantly improve their fertility with an increase in the number of spawning partners. Females perform conspicuous behaviours associated with spawning more frequently close to sneakers, and spawn more eggs close to high-quality sneakers. This is the first time that females have been shown to engage in behaviour that increases the probability of sneaking, and raises the possibility of a sexual conflict over the number and source of ejaculates during spawning in this species. In most species there is greater variance in reproductive fitness among males than females. A consequence is the evolution of alternative male mating tactics, including sneaking behaviour whereby males attempt to mate with females courted by other males, which could undermine female choice. In bitterling (Rhodeus sericeus), fish that lay their eggs on the gills of living freshwater mussels, sneaking is common and successful. Here we show that female bitterling can significantly improve their fertility with an increase in the number of spawning partners. Females perform conspicuous behaviours associated with spawning more frequently close to sneakers, and spawn more eggs close to high-quality sneakers. This is the first time that females have been shown to engage in behaviour that increases the probability of sneaking, and raises the possibility of a sexual conflict over the number and source of ejaculates during spawning in this species.
dcterms:title
Females solicit sneakers to improve fertilization success in the bitterling fish (Rhodeus sericeus) Samice hořavky duhové (Rhodeus sericeus) se dvoří neteritoriálním samcům: strategie zvýšení oplozenosti jiker Females solicit sneakers to improve fertilization success in the bitterling fish (Rhodeus sericeus)
skos:prefLabel
Females solicit sneakers to improve fertilization success in the bitterling fish (Rhodeus sericeus) Females solicit sneakers to improve fertilization success in the bitterling fish (Rhodeus sericeus) Samice hořavky duhové (Rhodeus sericeus) se dvoří neteritoriálním samcům: strategie zvýšení oplozenosti jiker
skos:notation
RIV/68081766:_____/05:00023254!RIV06-AV0-68081766
n3:strany
1683;1688
n3:aktivita
n13:Z n13:P
n3:aktivity
P(KJB600930501), Z(AV0Z60930519)
n3:cisloPeriodika
1573
n3:dodaniDat
n6:2006
n3:domaciTvurceVysledku
n14:9466703
n3:druhVysledku
n4:J
n3:duvernostUdaju
n9:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
521506
n3:idVysledku
RIV/68081766:_____/05:00023254
n3:jazykVysledku
n18:eng
n3:klicovaSlova
extra-pair copulations; bitterling; strategic ejaculation
n3:klicoveSlovo
n11:extra-pair%20copulations n11:strategic%20ejaculation n11:bitterling
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[E3CFB9F79EFA]
n3:nazevZdroje
Proceedings of the Royal Society of London. B - Biological Sciences
n3:obor
n17:EG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:projekt
n16:KJB600930501
n3:rokUplatneniVysledku
n6:2005
n3:svazekPeriodika
272
n3:tvurceVysledku
Smith, C. Reichard, Martin
n3:zamer
n10:AV0Z60930519
s:issn
0962-8452
s:numberOfPages
6