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Statements

Subject Item
n2:RIV%2F68081766%3A_____%2F07%3A00090240%21RIV08-AV0-68081766
rdf:type
skos:Concept n18:Vysledek
dcterms:description
Sledovali jsme mezidruhové rozdíly v poproudné migraci raných vývojových stádií 7 druhů kaprovitých ryb v řekách Morava a Kyjovka. Studie probíhala 2 roky, srovnávali jsme početnost a velikost těla driftujících ryb a ryb, které se vyskytovaly v příbřežních partiích řeky. Zjistili jsme, že některé druhy driftovaly velice hojně, zatímco jiné se driftu vyhýbaly. Obecně jsme idetifikovali dvě vývojové etapy, ve kterých ryby driftují. Tato stádia vývoje souvisí se změnou lokomotorické aktivity, chování a plněním plynového měchýře. We investigated interspecific differences in the downstream drift of seven species of young-of-the-year cyprinids over a two year period in two Central European rivers, using a comparison of drifting fish with fish collected from nurseries at the same time and the same site as the drift samples. Species varied in the utilisation of the drift; Rutilus rutilus, Gobio spp., Abramis brama and Carassius auratus gibelio drifted abundantly, while Leuciscus cephalus and Alburnus alburnus were abundant in nurseries, but drifted at low densities. Abramis bjoerkna was equally represented among drifting and resident fish. Generally, fish drifted at two major developmental intervals; L3 stage and L6/Juv stage, with interspecific differences in the ontogenetic timing of drifting. The propensity to drifting of certain developmental stages was also reflected in body size comparisons between drifting and resident fish. We investigated interspecific differences in the downstream drift of seven species of young-of-the-year cyprinids over a two year period in two Central European rivers, using a comparison of drifting fish with fish collected from nurseries at the same time and the same site as the drift samples. Species varied in the utilisation of the drift; Rutilus rutilus, Gobio spp., Abramis brama and Carassius auratus gibelio drifted abundantly, while Leuciscus cephalus and Alburnus alburnus were abundant in nurseries, but drifted at low densities. Abramis bjoerkna was equally represented among drifting and resident fish. Generally, fish drifted at two major developmental intervals; L3 stage and L6/Juv stage, with interspecific differences in the ontogenetic timing of drifting. The propensity to drifting of certain developmental stages was also reflected in body size comparisons between drifting and resident fish.
dcterms:title
Sezónní dynamika a věková struktura driftujících kaprovitých ryb: mezidruhové srovnání Seasonal dynamics and age structure of drifting cyprinid fishes: an interspecific comparison Seasonal dynamics and age structure of drifting cyprinid fishes: an interspecific comparison
skos:prefLabel
Sezónní dynamika a věková struktura driftujících kaprovitých ryb: mezidruhové srovnání Seasonal dynamics and age structure of drifting cyprinid fishes: an interspecific comparison Seasonal dynamics and age structure of drifting cyprinid fishes: an interspecific comparison
skos:notation
RIV/68081766:_____/07:00090240!RIV08-AV0-68081766
n3:strany
482;492
n3:aktivita
n8:Z n8:P
n3:aktivity
P(LC06073), Z(AV0Z60930519)
n3:cisloPeriodika
4
n3:dodaniDat
n7:2008
n3:domaciTvurceVysledku
n11:6271685 n11:9466703
n3:druhVysledku
n16:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
449124
n3:idVysledku
RIV/68081766:_____/07:00090240
n3:jazykVysledku
n13:eng
n3:klicovaSlova
dispersal; downstream drift; early life history; migration; young-of-the-year-fish
n3:klicoveSlovo
n10:early%20life%20history n10:downstream%20drift n10:migration n10:young-of-the-year-fish n10:dispersal
n3:kodStatuVydavatele
DK - Dánské království
n3:kontrolniKodProRIV
[C648C0E53286]
n3:nazevZdroje
Ecology of Freshwater Fish
n3:obor
n17:EH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n12:LC06073
n3:rokUplatneniVysledku
n7:2007
n3:svazekPeriodika
16
n3:tvurceVysledku
Reichard, Martin Jurajda, Pavel
n3:zamer
n14:AV0Z60930519
s:issn
0906-6691
s:numberOfPages
11