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Statements

Subject Item
n2:RIV%2F68081766%3A_____%2F03%3A67030007%21RIV%2F2004%2FAV0%2FA67004%2FN
rdf:type
skos:Concept n15:Vysledek
dcterms:description
We investigated male assessment of sperm competition in the bitterling. Field experiments showed males increased their inspection rate of mussels into which sperm had been experimentally released. Males avoided leading females to mussels that contained high numbers of embryos, but did not alter their leading behavior in response to the presence of sperm. In laboratory experiments males also increased their inspection rate of mussels into which sperm had been released and also failed to alter their leading behavior in response to the presence of sperm in mussels. However, males avoided leading females to mussels in proximity to other males. In a second field study, territorial males ejaculated into mussels at a low rate in the absence of competitors, increase the ejaculations in competition with a rival, then decrease ejaculate expenditure as the number of competing males increased. Observed data significantly correlated with predicted estimates of ejaculate expenditure. We investigated male assessment of sperm competition in the bitterling. Field experiments showed males increased their inspection rate of mussels into which sperm had been experimentally released. Males avoided leading females to mussels that contained high numbers of embryos, but did not alter their leading behavior in response to the presence of sperm. In laboratory experiments males also increased their inspection rate of mussels into which sperm had been released and also failed to alter their leading behavior in response to the presence of sperm in mussels. However, males avoided leading females to mussels in proximity to other males. In a second field study, territorial males ejaculated into mussels at a low rate in the absence of competitors, increase the ejaculations in competition with a rival, then decrease ejaculate expenditure as the number of competing males increased. Observed data significantly correlated with predicted estimates of ejaculate expenditure.
dcterms:title
Assessment of sperm competition by European bitterling, Rhodeus sericeus. Assessment of sperm competition by European bitterling, Rhodeus sericeus.
skos:prefLabel
Assessment of sperm competition by European bitterling, Rhodeus sericeus. Assessment of sperm competition by European bitterling, Rhodeus sericeus.
skos:notation
RIV/68081766:_____/03:67030007!RIV/2004/AV0/A67004/N
n3:strany
206;213
n3:aktivita
n5:Z
n3:aktivity
Z(AV0Z6093917)
n3:cisloPeriodika
4
n3:dodaniDat
n9:2004
n3:domaciTvurceVysledku
n7:6271685 n7:9466703
n3:druhVysledku
n12:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
599184
n3:idVysledku
RIV/68081766:_____/03:67030007
n3:jazykVysledku
n16:eng
n3:klicovaSlova
Acheilognathinae; alternative mating tactics; ESS model
n3:klicoveSlovo
n8:Acheilognathinae n8:ESS%20model n8:alternative%20mating%20tactics
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[08428BEFFC99]
n3:nazevZdroje
Behavioral Ecology and Sociobiology
n3:obor
n13:EG
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:rokUplatneniVysledku
n9:2003
n3:svazekPeriodika
53
n3:tvurceVysledku
Smith, C. Jurajda, Pavel Reichard, Martin
n3:zamer
n6:AV0Z6093917
s:issn
0340-5443
s:numberOfPages
8